Analysis

  • max time kernel
    150s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/09/2022, 13:15

General

  • Target
    _Vkc.dll
  • Size 401KB
  • Sample220913-qg8dnabdhm
  • SHA256 57e28579e8cd60487ca71115bd4367ba45bee5a7e3ea78023bc817d4699c3c9f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • qakbot

Version
  • 403.862

Botnet
  • BB

Campaign
  • 1663053540

C2
  • 194.49.79.231:443

  • 193.3.19.37:443

  • 99.232.140.205:2222

  • 47.146.182.110:443

  • 84.38.133.191:443

  • 191.97.234.238:995

  • 37.210.148.30:995

  • 64.207.215.69:443

  • 200.161.62.126:32101

  • 88.245.103.132:2222

  • 86.98.156.176:993

  • 175.110.231.67:443

  • 78.100.254.17:2222

  • 191.84.204.214:995

  • 123.240.131.1:443

  • 197.94.210.133:443

  • 196.92.172.24:8443

  • 186.50.245.74:995

  • 70.51.132.197:2222

  • 100.1.5.250:995

Attributes
  • salt

    SoNuce]ugdiB3c[doMuce2s81*uXmcvP

Signatures

  • Qakbot/Qbot

    Qbot or Qakbot is a sophisticated worm with banking capabilities.

  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies data under HKEY_USERS 51 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\_Vkc.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4828
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\_Vkc.dll
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4260
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1484
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /Z /ST 13:17 /tn gdaprvip /ET 13:28 /tr "powershell.exe -encodedCommand cgBlAGcAcwB2AHIAMwAyAC4AZQB4AGUAIAAiAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwAXwBWAGsAYwAuAGQAbABsACIA" /SC ONCE
          4⤵
          • Creates scheduled task(s)
          PID:2088
  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -encodedCommand cgBlAGcAcwB2AHIAMwAyAC4AZQB4AGUAIAAiAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwAXwBWAGsAYwAuAGQAbABsACIA
    1⤵
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1932
    • C:\Windows\system32\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" C:\Users\Admin\AppData\Local\Temp\_Vkc.dll
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4584
      • C:\Windows\SysWOW64\regsvr32.exe
        C:\Users\Admin\AppData\Local\Temp\_Vkc.dll
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:876
        • C:\Windows\SysWOW64\explorer.exe
          C:\Windows\SysWOW64\explorer.exe
          4⤵
          • Modifies data under HKEY_USERS
          PID:4748

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        _Vkc.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_Vkc.dll
        • Size 401KB
        • SHA256 57e28579e8cd60487ca71115bd4367ba45bee5a7e3ea78023bc817d4699c3c9f
        • MD5 SHA1 SHA512 SSDEEP

        _Vkc.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_Vkc.dll
        • Size 401KB
        • SHA256 57e28579e8cd60487ca71115bd4367ba45bee5a7e3ea78023bc817d4699c3c9f
        • MD5 SHA1 SHA512 SSDEEP

        memory/876-147-0x00000000007A0000-0x00000000007C2000-memory.dmp

        memory/876-145-0x00000000007A0000-0x00000000007C2000-memory.dmp

        memory/1484-137-0x0000000000830000-0x0000000000852000-memory.dmp

        memory/1484-138-0x0000000000830000-0x0000000000852000-memory.dmp

        memory/1932-144-0x00007FFB84590000-0x00007FFB85051000-memory.dmp

        memory/1932-139-0x000001F251DD0000-0x000001F251DF2000-memory.dmp

        memory/4260-135-0x0000000000BE0000-0x0000000000C02000-memory.dmp

        memory/4260-133-0x0000000000BE0000-0x0000000000C02000-memory.dmp

        memory/4748-148-0x0000000000490000-0x00000000004B2000-memory.dmp

        memory/4748-149-0x0000000000490000-0x00000000004B2000-memory.dmp