Analysis

  • max time kernel
    147s
  • max time network
    117s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    29/09/2021, 11:32

General

  • Target
    test.test.dll
  • Size 448KB
  • Sample210929-nnad4aehem
  • SHA256 b194eec1e599feeadfd463b06727e8b3c73a72a4c20017e5cfaf89fbf6d365c7
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • qakbot

Version
  • 402.363

Botnet
  • tr

Campaign
  • 1632817399

C2
  • 105.198.236.99:443

  • 140.82.49.12:443

  • 37.210.152.224:995

  • 89.101.97.139:443

  • 81.241.252.59:2078

  • 27.223.92.142:995

  • 81.250.153.227:2222

  • 73.151.236.31:443

  • 47.22.148.6:443

  • 122.11.220.212:2222

  • 120.151.47.189:443

  • 199.27.127.129:443

  • 216.201.162.158:443

  • 136.232.34.70:443

  • 76.25.142.196:443

  • 181.118.183.94:443

  • 120.150.218.241:995

  • 185.250.148.74:443

  • 95.77.223.148:443

  • 75.66.88.33:443

Signatures

  • Qakbot/Qbot

    Qbot or Qakbot is a sophisticated worm with banking capabilities.

  • Windows security bypass 2 TTPs
  • Loads dropped DLL 1 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 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\test.test.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3464
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\test.test.dll,#1
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:3624
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3748
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn dhsdmtkgc /tr "regsvr32.exe -s \"C:\Users\Admin\AppData\Local\Temp\test.test.dll\"" /SC ONCE /Z /ST 11:34 /ET 11:46
          4⤵
          • Creates scheduled task(s)
          PID:3864
  • \??\c:\windows\system32\regsvr32.exe
    regsvr32.exe -s "C:\Users\Admin\AppData\Local\Temp\test.test.dll"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4052
    • C:\Windows\SysWOW64\regsvr32.exe
      -s "C:\Users\Admin\AppData\Local\Temp\test.test.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1924
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        3⤵
        • Modifies data under HKEY_USERS
        • Suspicious use of WriteProcessMemory
        PID:4272
        • C:\Windows\system32\reg.exe
          C:\Windows\system32\reg.exe ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /t REG_DWORD /v "C:\ProgramData\Microsoft\Idfooobflb" /d "0"
          4⤵
            PID:4264
          • C:\Windows\system32\reg.exe
            C:\Windows\system32\reg.exe ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /t REG_DWORD /v "C:\Users\Admin\AppData\Roaming\Microsoft\Iukdvyxbee" /d "0"
            4⤵
              PID:4468

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/1924-129-0x0000000003230000-0x0000000003231000-memory.dmp

            memory/1924-128-0x0000000010000000-0x000000001007E000-memory.dmp

            memory/3624-116-0x0000000010000000-0x0000000010021000-memory.dmp

            memory/3624-117-0x0000000010000000-0x000000001007E000-memory.dmp

            memory/3624-118-0x00000000001E0000-0x00000000001E1000-memory.dmp

            memory/3748-123-0x00000000032B0000-0x00000000032D1000-memory.dmp

            memory/4272-135-0x00000000032B0000-0x00000000032D1000-memory.dmp