Analysis

  • max time kernel
    131s
  • max time network
    102s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/07/2024, 11:54

General

  • Target
    1CB539AE172B68B6116F7017B12A666B3E4FDB86130B10EFFF77C313696A02C4.exe
  • Size 267KB
  • Sample240724-n2vxysxgpc
  • SHA256 58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • arkei

Botnet
  • Default

C2
  • coin-file-file-19.com/tratata.php

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1CB539AE172B68B6116F7017B12A666B3E4FDB86130B10EFFF77C313696A02C4.exe
    "C:\Users\Admin\AppData\Local\Temp\1CB539AE172B68B6116F7017B12A666B3E4FDB86130B10EFFF77C313696A02C4.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5000
    • C:\Users\Admin\AppData\Local\Temp\YGxtJPNn.exe
      C:\Users\Admin\AppData\Local\Temp\YGxtJPNn.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:832
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\5bef7a7a.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4796
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5000 -s 560
      2⤵
      • Program crash
      PID:2876
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5000 -ip 5000
    1⤵
      PID:2944

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          k2[1].rar

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\3WWFCFW4\k2[1].rar
          • Size 4B
          • SHA256 b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c
          • MD5 SHA1 SHA512

          34114851.exe

          • Path C:\Users\Admin\AppData\Local\Temp\34114851.exe
          • Size 4B
          • SHA256 9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31
          • MD5 SHA1 SHA512

          5bef7a7a.bat

          • Path C:\Users\Admin\AppData\Local\Temp\5bef7a7a.bat
          • Size 191B
          • SHA256 f1e5b2d9d5fe38b28c12ab9875e1d826c653a572b73b131084ee5e57004e52f5
          • MD5 SHA1 SHA512

          YGxtJPNn.exe

          • Path C:\Users\Admin\AppData\Local\Temp\YGxtJPNn.exe
          • Size 15KB
          • SHA256 4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794
          • MD5 SHA1 SHA512 SSDEEP

          memory/832-5-0x0000000000230000-0x0000000000239000-memory.dmp

          memory/832-46-0x0000000000230000-0x0000000000239000-memory.dmp

          memory/5000-0-0x0000000000400000-0x0000000000487000-memory.dmp

          memory/5000-49-0x0000000000600000-0x0000000000700000-memory.dmp

          memory/5000-50-0x0000000000560000-0x000000000057F000-memory.dmp

          memory/5000-51-0x0000000000400000-0x0000000000431000-memory.dmp

          memory/5000-52-0x0000000000400000-0x0000000000487000-memory.dmp

          memory/5000-53-0x0000000000400000-0x0000000000431000-memory.dmp