Analysis

  • max time kernel
    147s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-03-2023 07:35

General

  • Target

    SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe

  • Size

    81KB

  • MD5

    d0a9b69bad966520f71412a8ce2035b0

  • SHA1

    ba5347ee2a896b27d211520a3666a682aa9f8e28

  • SHA256

    a539cbe05c220c5a791f2581c2a306273a9d954868428bffd1b01d2bd2fa721d

  • SHA512

    489000c1a40703380e285912e42916cd4ae2568f5a7371013f9c8b3bb3465440330ddef43731b6b1a8c653661162a805cf745bc8fd66ef386a8d039203920e01

  • SSDEEP

    1536:UxYAEa9Bj08oGaa82Tq70ddJwgKi3izHxGZnLWzSH3OQMjQ4Nzq2B:Ux39bo4EifJKEmH8ZnLuOqHNzR

Malware Config

Extracted

Family

purecrypter

C2

http://192.3.26.135/uo/Wqnssgirj.dat

Extracted

Family

snakekeylogger

Credentials

Signatures

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4504
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3032
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4184

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zjt3jdsa.h3k.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/3032-139-0x0000000002980000-0x00000000029B6000-memory.dmp

    Filesize

    216KB

  • memory/3032-161-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/3032-154-0x0000000005F50000-0x0000000005F6E000-memory.dmp

    Filesize

    120KB

  • memory/3032-160-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/3032-155-0x0000000007960000-0x0000000007FDA000-memory.dmp

    Filesize

    6.5MB

  • memory/3032-159-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/3032-140-0x0000000005290000-0x00000000058B8000-memory.dmp

    Filesize

    6.2MB

  • memory/3032-156-0x0000000006450000-0x000000000646A000-memory.dmp

    Filesize

    104KB

  • memory/3032-143-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/3032-144-0x0000000005930000-0x0000000005996000-memory.dmp

    Filesize

    408KB

  • memory/3032-142-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/3032-157-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/3032-141-0x00000000058C0000-0x0000000005926000-memory.dmp

    Filesize

    408KB

  • memory/4184-166-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/4184-168-0x00000000057A0000-0x000000000583C000-memory.dmp

    Filesize

    624KB

  • memory/4184-169-0x0000000005710000-0x0000000005720000-memory.dmp

    Filesize

    64KB

  • memory/4184-170-0x0000000006870000-0x0000000006A32000-memory.dmp

    Filesize

    1.8MB

  • memory/4184-171-0x0000000005710000-0x0000000005720000-memory.dmp

    Filesize

    64KB

  • memory/4504-138-0x0000000005C30000-0x0000000005C52000-memory.dmp

    Filesize

    136KB

  • memory/4504-136-0x0000000004AE0000-0x0000000004AEA000-memory.dmp

    Filesize

    40KB

  • memory/4504-134-0x0000000005000000-0x00000000055A4000-memory.dmp

    Filesize

    5.6MB

  • memory/4504-158-0x0000000004C50000-0x0000000004C60000-memory.dmp

    Filesize

    64KB

  • memory/4504-133-0x0000000000120000-0x000000000013A000-memory.dmp

    Filesize

    104KB

  • memory/4504-137-0x0000000004C50000-0x0000000004C60000-memory.dmp

    Filesize

    64KB

  • memory/4504-135-0x0000000004AF0000-0x0000000004B82000-memory.dmp

    Filesize

    584KB