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AsyncRAT and Remcos Delivered in Multi-Stage Phishing Campaign

0
Medium
Published: 06/24/2026 (06/24/2026, 09:33:15 UTC)
Source: AlienVault OTX General

Description

A global phishing campaign targets business functions with emails carrying malicious Excel attachments that initiate a multi-stage infection chain when macros are enabled. The attack uses layered obfuscation, including HTA scripts, PowerShell, encoded payloads, and steganography in PNG files, to deliver and execute Remote Access Trojans such as Remcos and AsyncRAT in a largely fileless manner. It achieves scale and persistence through high variability, automation, disposable infrastructure, and consistent patterns that help evade detection despite relatively simple techniques.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 07/31/2026, 12:46:05 UTC

Technical Analysis

This phishing campaign targets business functions worldwide by sending emails with malicious Excel attachments that trigger a multi-stage infection chain when macros are enabled. The infection chain uses heavy obfuscation methods including HTA scripts, PowerShell commands, encoded payloads, and steganography embedded in PNG files to deliver Remote Access Trojans such as AsyncRAT and Remcos. The campaign is notable for its fileless execution style, high variability, automation, and use of disposable infrastructure to evade detection and maintain persistence. Despite using relatively simple techniques, the layered obfuscation and operational scale allow it to be effective globally.

Potential Impact

Successful exploitation results in the installation of Remote Access Trojans (AsyncRAT and Remcos) on victim systems, enabling attackers to gain unauthorized remote access and control. This can lead to data theft, espionage, lateral movement within networks, and potential further compromise of business operations. The use of fileless techniques and obfuscation complicates detection and response efforts.

Defensive Guidance

No official patch or fix is available as this is a phishing campaign leveraging social engineering and macro-enabled documents. Mitigation focuses on user awareness training to avoid enabling macros from untrusted sources, implementing email filtering to block malicious attachments, and deploying endpoint detection solutions capable of identifying obfuscated scripts and fileless malware behaviors. Organizations should also monitor for indicators of compromise related to AsyncRAT and Remcos and apply network segmentation to limit potential lateral movement.

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Technical Details

Author
AlienVault
Tlp
white
Pulse Id
6a3ba45b3fef31b3a05d9cb0

Indicators of Compromise

Ip

ValueDescriptionCopy
ip107.172.235.213
CC=US ASN=AS36352 colocrossing
ip198.12.83.75
CC=US ASN=AS36352 colocrossing
ip192.227.219.79
CC=US ASN=AS36352 colocrossing
ip173.231.188.244
CC=US ASN=AS29791 internap holding llc
ip107.172.135.60
CC=US ASN=AS36352 colocrossing

Url

ValueDescriptionCopy
urlhttp://192.227.219.79:4550
—
urlhttp://107.172.235.213/87/img_015059.png
—
urlhttp://173.231.188.244:14641
—
urlhttp://107.172.135.60/96/ibredgoodforbestthingscomingbackform.hta
e6faa8d9189b089d38c728bec9e02b709346650796503807b928e5b0c0a680f9
urlhttps://as.al/file/KBn1RC
—
urlhttp://198.12.83.75/98/img_194618.png
—
urlhttps://cuth.me/sse8kU
—

Hash

ValueDescriptionCopy
hash614115669d093c58539e8183617a62a59aefd1a9a1fddcc7a67508f2fb9e36ab
—
hash0b47f8d79e37ebec7edd2333ab70caa1e3e710b310b8201c5447820886ce8d49
—
hash248da1553ce35bb6c499a660fcd92bde6e3545b56b65b63308e7b7630f376bfc
—
hash5e1172c07877a4d44f3c2f33abb268d7e6b3114e
SHA1 of 0b47f8d79e37ebec7edd2333ab70caa1e3e710b310b8201c5447820886ce8d49
hashce3480917a5285a03b9de320354f3e1b
MD5 of 0b47f8d79e37ebec7edd2333ab70caa1e3e710b310b8201c5447820886ce8d49
hashf9f6314fc9f333b1aa92afdd63a98927b85fd01607e907e69b4682d18f31d2a1
—
hash49c7b4eb6620917ee7ca796472b7af9f01ea6f7f80391ae7eb7bd8dabe0b7249
—
hash49c7b4eb6620917ee7ca796472b7af9f01ea6f7f80391ae7eb7bd8dabe0b7249
—
hash3e4dadbd55753a77a0d2acd3c333afc7
MD5 of 5e17e44fe2ef3e44904a65bfc787ddb9a5109350ce9636f4470f765e7f6fb1ec
hash492a0bda6b22583ccdab80b2b8f8f2a0
MD5 of a136fce65870643b187eada0d60d8b338a9f4d20762b2a550cadf03597f68017
hash52b725b8144745f2885198d514a805eb
MD5 of e6faa8d9189b089d38c728bec9e02b709346650796503807b928e5b0c0a680f9
hash59ea75c5850eb80812d991f903a10014
MD5 of c92c8d5ea7e0e05e0f19fabd4111731ef4b9e7d5e0b028797e23481b6afde212
hash5e16dd79001f2faba4569e2abd5b19c0
MD5 of eb5ec9fca46e31da933f3a52aed3e483aec25e59c7540b89740fbe6dc19b0bc8
hash5f51518947c84a2b43483ff3d5404cbd
MD5 of ef00251d4b7f56bf3a08afc6fbbbef268de470fb6d387e1c72909999a3b2c652
hash5fc03d7c710b3eb75a9c6534dd1319a7
MD5 of 7ffd8ab8cad744263a4f16c8e96da8b8c38818b480dbeaec91e4224ac70b7ec1
hash7351447d7eaf36822d9bce9ae0ed3ece
MD5 of f4d6b2437e33500195e3e1607704ffb7b544c2dd8f2333ed06d42d625b7a7f8d
hasha822b55a9a6a8b66c068d22e52d3203f
MD5 of 248da1553ce35bb6c499a660fcd92bde6e3545b56b65b63308e7b7630f376bfc
hashcd2a5eb1bf35cb53b20c75be741ac1f4
MD5 of ee4f710c68bc2214febeb0127ccb5e111e1a4d01f6d4503efd22a88fb1464606
hashd526c9bbc38129a8c81afeda08e9aaef
MD5 of 256f595afb005303a693fe26a03f9fce6d47b225bfc2300e418f5f80a89089d2
hashd924b7e4d3fc4bc02422057ebe87dcdd
MD5 of bb551faff31c0a2c073b8a8cde34b41b6aed6e3aa7ca190e4764fdbc037be2c3
hashf37382f028b294ec539f16b74af6a565
MD5 of c63b921b71be21eb964f085fa9d39dd720b183174ad40ec195b09b62f5ad2581
hash4c3f5e274c160b9943259754dbd23b3656aa8265
SHA1 of ef00251d4b7f56bf3a08afc6fbbbef268de470fb6d387e1c72909999a3b2c652
hash50fdee4b9ea69300c2769e613c92a69e4adcc0a8
SHA1 of 248da1553ce35bb6c499a660fcd92bde6e3545b56b65b63308e7b7630f376bfc
hash658af6cba07684a4d5a34547585430ddc37a6efa
SHA1 of a136fce65870643b187eada0d60d8b338a9f4d20762b2a550cadf03597f68017
hash6c2f10ec18c34ea9ba423b19e6ccf228ecf47a31
SHA1 of bb551faff31c0a2c073b8a8cde34b41b6aed6e3aa7ca190e4764fdbc037be2c3
hash8244d0a2457850ba4c2cc036d02863269272bdfd
SHA1 of 5e17e44fe2ef3e44904a65bfc787ddb9a5109350ce9636f4470f765e7f6fb1ec
hasha67a1b5cf32bcefab1d84c5eb09f3be808cbc4e1
SHA1 of f4d6b2437e33500195e3e1607704ffb7b544c2dd8f2333ed06d42d625b7a7f8d
hashb7cddd45bf477f1a2f8c4343f213454fe57f9b5f
SHA1 of ee4f710c68bc2214febeb0127ccb5e111e1a4d01f6d4503efd22a88fb1464606
hashcd3b3de6c894b9cd3bd3b9cfcf00077adb88877b
SHA1 of e6faa8d9189b089d38c728bec9e02b709346650796503807b928e5b0c0a680f9
hashd044d5b8ba9c7abc203a0ff5688702c7f45b54cd
SHA1 of eb5ec9fca46e31da933f3a52aed3e483aec25e59c7540b89740fbe6dc19b0bc8
hashe15c7f7f4f951bb444fe77603f903d601d3ad93b
SHA1 of 7ffd8ab8cad744263a4f16c8e96da8b8c38818b480dbeaec91e4224ac70b7ec1
hashe1f3942742b5cd393673539b3298fab5bdef7b14
SHA1 of c92c8d5ea7e0e05e0f19fabd4111731ef4b9e7d5e0b028797e23481b6afde212
hasheb4866afa868cfa18cb49a3bd62a7019358288d5
SHA1 of c63b921b71be21eb964f085fa9d39dd720b183174ad40ec195b09b62f5ad2581
hashf2dd12c3b7d04624433cc6811c6fbf20e3f84e2b
SHA1 of 256f595afb005303a693fe26a03f9fce6d47b225bfc2300e418f5f80a89089d2
hash0081bb2de5a6599ee14cba1d0df8ff7dd63fe8b070cd18dd7b11c2adfa5e7876
—
hash0542b57b67b021f877969c900214362d62eb2ba56d0645ab4e62838c8c79733a
—
hash0e1a306ac4b6770dbc8cb194021a9f32e9a726478db2e39084d4baa892c69521
—
hash0f2aa62136bee5996123b88a8a5216ad3822252ddb110c5e66728bd49ec270de
—
hash1982710eb67791c9c5ac55e13abad0c24d0210c1383eedbda20855944bfe75bd
—
hash1fcaa6fc864faa3b0964accf30c562fc4e9192e530c5c5bbcb5ee03fdfc46163
—
hash256f595afb005303a693fe26a03f9fce6d47b225bfc2300e418f5f80a89089d2
—
hash2d17adbea1ddca7e827c8e4b46d2ea7cb9e693aff07271e5fcb24765e8385afa
—
hash33ad6106da73526090d6a798951015b199fc4634b1a0ee611ca16ff32330eb06
—
hash38511e5189d3303d7258d3c889a61f56c5000fe4c91fbaedffc4271f6123038b
—
hash3892bcd10df0a5fdf2045f78609d073b89e0ef0ee88b88be6a9e308441a8c52c
—
hash3d8e5092a9852b61d8d45bd3c7e2d99907fcaa9a8fd3fe3b9efcbc9255947606
—
hash424d69145e60635da0d069aef4f2233db3468c557f01286af8e59e6aa8e5cd60
—
hash4f12ec57cca013dce1a5bcaf11ddf5d85fc2ecbc52afb9e61e4154d1be2d9ef3
—
hash5e17e44fe2ef3e44904a65bfc787ddb9a5109350ce9636f4470f765e7f6fb1ec
—
hash5e2c7496aed4efc11ae17641a6421ed47fea92342811026595dcee4f487180fb
—
hash6e79ef38577cca732976732c38ee22f5f3102a7a4458da6edb708b4be5afb9b0
—
hash7672fb55d63f3206cd694de6009288cc3d3aff7727233ca5a677072896308357
—
hash7ffd8ab8cad744263a4f16c8e96da8b8c38818b480dbeaec91e4224ac70b7ec1
—
hash8bc10f6462ac27eee0c685b74ffdf0554bd08d20b457543688ee82a86fdae275
—
hash975cf719a576788055ca2a6b7b44aaed36c27a8676ea8d50b25a9f935eaf9d79
—
hash97e74ad16c88b4b07722b5ad42dba95d837b6bdb9fa1193615f42fb34af5684f
—
hash9a4475ff6a370c3d958e40739b729ebbfae179f369ba26f2d12816066e951a7f
—
hash9c1121b62cc69945cde94f3f29022eb687216f61933904e5f32b902299a0399d
—
hash9f242f61a1f0cb29cbbce0f5c8412cb93ce48d1aa61968f7cc2539518425036f
—
hasha136fce65870643b187eada0d60d8b338a9f4d20762b2a550cadf03597f68017
—
hasha4ae487ec3b2db461067824c4c6753e26cf0a7b2b113d0c34a81b01c2c7b3c07
—
hashac7e72b5bf2dec4edf02545daf58342f60510f6d128509f47e52138c1f53cd38
—
hashacb18684468dc7c0b900e807758f4813115472011df161d7e05ff7beebbb5414
—
hashacdb202ced24988048597abfbcb288424882674d72abb77d693642a279bfc86d
—
hashb3d8e9daf02cc00d56bb2c1e1c380a68006d691f868cb6433d63f732085fbfde
—
hashb64b5e1c54fd1da11321cdcb320c0ddecda5be7060e98f0c032f90f0bed69eeb
—
hashb828d345b854f07e333f29bd5224ecb8d5daf0451a645b4be32e634395724c43
—
hashbb551faff31c0a2c073b8a8cde34b41b6aed6e3aa7ca190e4764fdbc037be2c3
—
hashbbbd65d1989023690b51f2a706e9a610e1ef598c10a0d33acf1774ff384a0f79
—
hashc63b921b71be21eb964f085fa9d39dd720b183174ad40ec195b09b62f5ad2581
—
hashc884b1e59bad0101ecf86bd1b5b9e0e2819d5c4d1bd6eac7d76da61db06baa73
—
hashc92c8d5ea7e0e05e0f19fabd4111731ef4b9e7d5e0b028797e23481b6afde212
—
hashd57cbb9f4a8176704f45b1c139990463907d293b74cfc2fdbe1656e304a94d22
—
hashdaa335553542dea9666a83b3f49e85b51193a39e809fd899bfcbc2d35fcc0c3e
—
hashe03a16696d74144a6ecb626662246332aa509d2d0ae7e2a192a3c8b1ed9390ea
—
hashe14539685087d21a47968ec6f07d7e6c385b8487fd7d0fbd635918f01d2f01ac
—
hashe1b29c075dcc880693a7fbe810e10d65b70a789e27c0d0254683c3eb172b9531
—
hashe38d9933364c69ceda6d80dda7ff12cfa3e3cf13b019af7264dbd263c3693874
—
hashe6318081f044c469c78245ecfc858c94542787564336f12a0f7cdef7aecc7a78
—
hashe6faa8d9189b089d38c728bec9e02b709346650796503807b928e5b0c0a680f9
—
hasheb5ec9fca46e31da933f3a52aed3e483aec25e59c7540b89740fbe6dc19b0bc8
—
hashebfd6c01a834b160eb5b4456c04ba1d1b82fd28c99d9d1aa6b1a64c08929aa07
—
hashee4f710c68bc2214febeb0127ccb5e111e1a4d01f6d4503efd22a88fb1464606
—
hashef00251d4b7f56bf3a08afc6fbbbef268de470fb6d387e1c72909999a3b2c652
—
hashf028d7411d2507e887134cf74f3060460bbcfbc6afa4bb7bba16fb3d1507da74
—
hashf4d6b2437e33500195e3e1607704ffb7b544c2dd8f2333ed06d42d625b7a7f8d
—

Domain

ValueDescriptionCopy
domainffgfgjjddsgtrddhtjyfdsessxdssdfdfdfghfhg.duckdns.org
—

Threat ID: 6a423ca127e9c7971998234e

Added to database: 06/29/2026, 09:36:33 UTC

Last enriched: 07/31/2026, 12:46:05 UTC

Last updated: 09/27/2026, 21:43:12 UTC

Views: 190

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