General

  • Target
    Setup.exe
  • Size 1.8MB
  • Sample260927-eelw4ayblf
  • SHA256 594033ed58e27b42bb1bef7e5b21eac87f0d660c7cc3d48881a2e5575e3ac811
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • acrstealer

xor.hex

Extracted

Family
  • acrstealer

Version
  • 4.4.3-alpha1

Decoy
  • googlesyndication.com

Attributes
  • ddrs

    https://telegra.ph/String-Methods-08-01

  • guids

    019fd862-6a3a-7ae0-9126-4c50bf4131ad

    f1575b64-8492-4e8b-b102-4d26e8c70371

  • 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
      Setup.exe
    • Size 1.8MB
    • SHA256 594033ed58e27b42bb1bef7e5b21eac87f0d660c7cc3d48881a2e5575e3ac811
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects SectopRAT aka Arechclient2

    • Family: ACR stealer,GrMsk

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

    • Family: SectopRAT

      SectopRAT also known as Arechclient2 is a remote access trojan first seen in November 2019.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • 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.

    • Registers new Windows logon scripts automatically executed at logon.

    • 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.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks