General

  • Target
    930600062.exe
  • Size 5.4MB
  • Sample260827-wqfmwsyscs
  • SHA256 9705bd691a0be1f2fdb19b72b12e25097c39ce9c2173c3d5e7b106b4e97fa548
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • acrstealer

Version
  • 4.3.7-alpha2

C2
  • health.indigowell.cc

Decoy
  • fonts.gstatic.com

Attributes
  • ddrs

    https://telegra.ph/Built-in-Types-08-01

  • guids

    f1575b64-8492-4e8b-b102-4d26e8c70371

    01a0353f-0ad2-7efa-8507-e484ee70ce02

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.2.6187.130 Safari/537.36

xor.hex

Targets

    • Target
      930600062.exe
    • Size 5.4MB
    • SHA256 9705bd691a0be1f2fdb19b72b12e25097c39ce9c2173c3d5e7b106b4e97fa548
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects ACRStealer V4.x

    • Family: ACR stealer,GrMsk

      ACR stealer (aka GrMsk stealer) is an infostealer written in C++.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v16

Tasks