Analysis

  • max time kernel
    89s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-07-2022 20:48

General

  • Target

    Document.pdf.scr

  • Size

    700.0MB

  • MD5

    66313350525d00444319e42f88c9a320

  • SHA1

    5e54b8d600254f67fc03cad68a00a7f2a9d89b77

  • SHA256

    00770e297ae5fdcaa0f235de9bee97309553bc89c955c47141e21f6fabdd55c7

  • SHA512

    a16611adba248ea831a4c25b6d0d46e20793f2f3500a13f29129414756c24ad209118b93e3b435e229e41ab92b01d52bfe31add86c0ed8b6e7469aafff594e2b

Malware Config

Extracted

Family

redline

Botnet

2

C2

62.204.41.139:25190

Attributes
  • auth_value

    f3af3290196bb8fa91c4ccc1d3fcb28f

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Document.pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\Document.pdf.scr" /S
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:544
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4896
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      2⤵
        PID:3320
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4812

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    1
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/544-131-0x0000000005D30000-0x00000000062D4000-memory.dmp
      Filesize

      5.6MB

    • memory/544-132-0x0000000006B90000-0x0000000006BB2000-memory.dmp
      Filesize

      136KB

    • memory/544-130-0x0000000000C50000-0x0000000000E76000-memory.dmp
      Filesize

      2.1MB

    • memory/3320-141-0x0000000000000000-mapping.dmp
    • memory/4812-148-0x0000000008770000-0x00000000087E6000-memory.dmp
      Filesize

      472KB

    • memory/4812-147-0x0000000007B20000-0x0000000007B5C000-memory.dmp
      Filesize

      240KB

    • memory/4812-153-0x0000000005D30000-0x0000000005D80000-memory.dmp
      Filesize

      320KB

    • memory/4812-152-0x0000000009B90000-0x000000000A0BC000-memory.dmp
      Filesize

      5.2MB

    • memory/4812-151-0x0000000009490000-0x0000000009652000-memory.dmp
      Filesize

      1.8MB

    • memory/4812-150-0x0000000008850000-0x000000000886E000-memory.dmp
      Filesize

      120KB

    • memory/4812-149-0x0000000008890000-0x0000000008922000-memory.dmp
      Filesize

      584KB

    • memory/4812-146-0x0000000007BF0000-0x0000000007CFA000-memory.dmp
      Filesize

      1.0MB

    • memory/4812-142-0x0000000000000000-mapping.dmp
    • memory/4812-143-0x0000000000400000-0x0000000000420000-memory.dmp
      Filesize

      128KB

    • memory/4812-144-0x0000000006200000-0x0000000006818000-memory.dmp
      Filesize

      6.1MB

    • memory/4812-145-0x0000000007AC0000-0x0000000007AD2000-memory.dmp
      Filesize

      72KB

    • memory/4896-134-0x0000000000DC0000-0x0000000000DF6000-memory.dmp
      Filesize

      216KB

    • memory/4896-135-0x0000000004F50000-0x0000000005578000-memory.dmp
      Filesize

      6.2MB

    • memory/4896-133-0x0000000000000000-mapping.dmp
    • memory/4896-140-0x0000000006040000-0x000000000605A000-memory.dmp
      Filesize

      104KB

    • memory/4896-139-0x00000000073F0000-0x0000000007A6A000-memory.dmp
      Filesize

      6.5MB

    • memory/4896-138-0x0000000005B70000-0x0000000005B8E000-memory.dmp
      Filesize

      120KB

    • memory/4896-137-0x0000000004DE0000-0x0000000004E46000-memory.dmp
      Filesize

      408KB

    • memory/4896-136-0x0000000004D70000-0x0000000004DD6000-memory.dmp
      Filesize

      408KB