UAC-0184 : "The Dark Side of the Fallen Files" Pitching Operation

    Date: 01/01/2026

    Severity: High

    Summary

    UAC-0184, also known as Hive0156, is a Russia-aligned threat actor that conducts cyber operations against Ukraine using commercially available malware and lure documents. The group primarily targets Ukrainian military personnel by distributing weaponized LNK files or PowerShell scripts that result in Remcos malware infections. Their decoy documents are closely tailored to Ukrainian military operations, making them particularly convincing for individuals tracking the country’s military activities.

    Indicators of Compromise (IOC) List

    Domains\URLs :

    http://5.101.85.24/k4s/tune.ps1

    http://5.101.85.24/k4s/spear.ps1

    http://5.101.85.24/smoothieks.zip

    IP Address :

    5.101.85.24

    Hash :

    77da028b852acdcdcf4b46b23e79ac66

    f7a93c7918a4d8837519eb6619c25b90

    739dea9edc813c83cc488010cbdc10f6

    1ce195f66d79587d583e4792ceb1c898

    Gurucul Threat Detection and Incident Response (TDIR) Queries for Detection

    Detection Query 1 :

    domainname like "http://5.101.85.24/smoothieks.zip" or url like "http://5.101.85.24/smoothieks.zip" or siteurl like "http://5.101.85.24/smoothieks.zip" or domainname like "http://5.101.85.24/k4s/spear.ps1" or url like "http://5.101.85.24/k4s/spear.ps1" or siteurl like "http://5.101.85.24/k4s/spear.ps1" or domainname like "http://5.101.85.24/k4s/tune.ps1" or url like "http://5.101.85.24/k4s/tune.ps1" or siteurl like "http://5.101.85.24/k4s/tune.ps1"

    Detection Query 2 :

    dstipaddress IN ("5.101.85.24") or srcipaddress IN ("5.101.85.24")

    Detection Query 3 :

    md5hash IN ("f7a93c7918a4d8837519eb6619c25b90","739dea9edc813c83cc488010cbdc10f6","1ce195f66d79587d583e4792ceb1c898","77da028b852acdcdcf4b46b23e79ac66")

    Reference:     

    https://mp.weixin.qq.com/s?__biz=MzUyMjk4NzExMA==&mid=2247507757&idx=1&sn=cf6b118e88395af45a000aae80811264&poc_token=HCo5Vmmj7xdXveHwJXIDjh7DjowIBruRQdqX_s31                          


    Tags

    MalwareThreat ActorREMCOSRussiaUkraineDefense Industrial Base

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