Analysis

  • max time kernel
    130s
  • 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
    25-07-2022 10:57

General

  • Target

    Document.pdf.scr

  • Size

    700.0MB

  • MD5

    ea7b8236ca438995b2ee7604043fc20c

  • SHA1

    4543d6fbe467c8a17b962e0c19a25fd59d82ded8

  • SHA256

    954e35d28e5938766eb6922e08a4e26d5ed892a1578027374d945efbe0d927e3

  • SHA512

    22a1173def10e7c74fbcef024127f87635a508044c4fbbfa2f4e32b05823b5fc9fa166645851dbaa32c926a735745ca727dc0183a72fd9f3cc222f9f07395a7a

Malware Config

Extracted

Family

redline

Botnet

1

C2

62.204.41.139:25190

Attributes
  • auth_value

    2c239ad7c28c8eab1f9626557bb9457a

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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 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:4628
    • 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:4804
    • 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:964

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/964-145-0x0000000005440000-0x000000000547C000-memory.dmp
    Filesize

    240KB

  • memory/964-146-0x0000000006530000-0x0000000006AD4000-memory.dmp
    Filesize

    5.6MB

  • memory/964-140-0x0000000000000000-mapping.dmp
  • memory/964-141-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB

  • memory/964-151-0x0000000007210000-0x00000000073D2000-memory.dmp
    Filesize

    1.8MB

  • memory/964-150-0x0000000007AA0000-0x0000000007AF0000-memory.dmp
    Filesize

    320KB

  • memory/964-149-0x0000000006470000-0x000000000648E000-memory.dmp
    Filesize

    120KB

  • memory/964-148-0x00000000063F0000-0x0000000006466000-memory.dmp
    Filesize

    472KB

  • memory/964-147-0x00000000058B0000-0x0000000005942000-memory.dmp
    Filesize

    584KB

  • memory/964-142-0x0000000005960000-0x0000000005F78000-memory.dmp
    Filesize

    6.1MB

  • memory/964-144-0x0000000005510000-0x000000000561A000-memory.dmp
    Filesize

    1.0MB

  • memory/964-152-0x0000000008160000-0x000000000868C000-memory.dmp
    Filesize

    5.2MB

  • memory/964-143-0x00000000053E0000-0x00000000053F2000-memory.dmp
    Filesize

    72KB

  • memory/4628-130-0x0000000000930000-0x0000000000B56000-memory.dmp
    Filesize

    2.1MB

  • memory/4628-131-0x0000000006160000-0x0000000006182000-memory.dmp
    Filesize

    136KB

  • memory/4804-139-0x0000000006910000-0x000000000692A000-memory.dmp
    Filesize

    104KB

  • memory/4804-132-0x0000000000000000-mapping.dmp
  • memory/4804-138-0x0000000007E60000-0x00000000084DA000-memory.dmp
    Filesize

    6.5MB

  • memory/4804-137-0x0000000006420000-0x000000000643E000-memory.dmp
    Filesize

    120KB

  • memory/4804-136-0x0000000005D90000-0x0000000005DF6000-memory.dmp
    Filesize

    408KB

  • memory/4804-135-0x0000000005D20000-0x0000000005D86000-memory.dmp
    Filesize

    408KB

  • memory/4804-134-0x00000000055A0000-0x0000000005BC8000-memory.dmp
    Filesize

    6.2MB

  • memory/4804-133-0x0000000002AF0000-0x0000000002B26000-memory.dmp
    Filesize

    216KB