Resubmissions

31/10/2026, 23:00

261031-2y24raaf58

31/10/2026, 04:31

261031-e5rv2atyhy3

31/10/2026, 04:25

261031-e12vfatyfy3

31/10/2026, 00:28

261031-asq1ragt5y10

31/10/2026, 00:03

261031-ab54cafy6z10

30/10/2026, 23:40

261030-3n3g7sfg4210

General

  • Target
    All_5DLCs_Psykzhack.rar_·_AkiraBox_Archive_free_4032.zip
  • Size 39.6MB
  • Sample261031-ab54cafy6z
  • SHA256 31ef0d01201e1c41b5a9ec760df299318a4f5497e9656657447475276c4f3698
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • acrstealer

Version
  • 4.5.3-alpha1

C2
  • gstatic.com

  • ns.jigsawstrewn.cc

Attributes
  • ddrs

    cert.hamperdinner.cc

  • guids

    01a17409-9878-7eb9-9607-35b46b089ab1

    4d0bf37a-3180-4974-a873-a6ec4d4dc9f9

  • 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 102KB
    • SHA256 7123e1514b939b165985560057fe3c761440a9fff9783a3b84e861fd2888d4ab
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: ACR stealer,GrMsk

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

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Executes dropped EXE

    • Indirect Command Execution

      Adversaries may abuse utilities that allow for command execution to bypass security restrictions that limit the use of command-line interpreters.

    • Loads dropped DLL

    • 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v16

Tasks