Analysis

  • max time kernel
    150s
  • max time network
    138s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    15-04-2021 13:21

General

  • Target

    Documents 4995.xlsb

  • Size

    75KB

  • MD5

    f26158691ea9aeec5e2aa69e58c65c7d

  • SHA1

    0954a286bd666290d9396833cf948c62cd038492

  • SHA256

    ee1e81fcd5e336fd2d19cc9eb0a5a8f796613f387b1b7216106d7130da0ea3cf

  • SHA512

    6b223115cccfc67ce2449689af76744549d58b85f0cf491c591d6bfe60eb0bcd81f6b5044fafd62ecce90202a3ffb727b1617b93cf1184990e14412ac286b0fb

Malware Config

Extracted

Family

qakbot

Botnet

tr

Campaign

1618398298

C2

47.196.192.184:443

216.201.162.158:443

136.232.34.70:443

71.41.184.10:3389

140.82.49.12:443

45.63.107.192:2222

45.63.107.192:443

149.28.98.196:443

45.32.211.207:443

144.202.38.185:443

45.77.115.208:2222

45.77.115.208:8443

207.246.116.237:995

45.77.117.108:443

149.28.99.97:443

149.28.99.97:995

149.28.98.196:995

45.32.211.207:995

45.32.211.207:2222

149.28.98.196:2222

Signatures

  • Process spawned unexpected child process 5 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Qakbot/Qbot

    Qbot or Qakbot is a sophisticated worm with banking capabilities.

  • Loads dropped DLL 2 IoCs
  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Documents 4995.xlsb"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4044
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\fikftkm.thj,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1192
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32 ..\fikftkm.thj,DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:3780
        • C:\Windows\SysWOW64\explorer.exe
          C:\Windows\SysWOW64\explorer.exe
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1516
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn sbbshmjo /tr "regsvr32.exe -s \"C:\Users\Admin\fikftkm.thj\"" /SC ONCE /Z /ST 15:20 /ET 15:32
            5⤵
            • Creates scheduled task(s)
            PID:2352
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\fikftkm.thj1,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:3868
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\fikftkm.thj2,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:3200
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\fikftkm.thj3,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:2704
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\fikftkm.thj4,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:1480
  • \??\c:\windows\system32\regsvr32.exe
    regsvr32.exe -s "C:\Users\Admin\fikftkm.thj"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4064
    • C:\Windows\SysWOW64\regsvr32.exe
      -s "C:\Users\Admin\fikftkm.thj"
      2⤵
      • Loads dropped DLL
      PID:1188
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1188 -s 608
        3⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3284

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\fikftkm.thj

    MD5

    f39651904de252f4e96ece7a5f844f8d

    SHA1

    a4d212ee9cba9ae0a79582182ac4776948349541

    SHA256

    02caf6e564c885476eded0b0558f70858a418fd8226eab2a9b79317500a471ae

    SHA512

    6431bfb563ef1050ac58fecaf72def360003b1ec0c31e4e31eefab838ee2b8eef582025cbd20162c6f146ef29313df1dfb2bdb1b5d01bb227b638b6e8d68733e

  • C:\Users\Admin\fikftkm.thj

    MD5

    5f0765c2bef2b169d71896cc95f7d120

    SHA1

    6d9aacb219c90e8c9b1e77b273b99a3b7193cbda

    SHA256

    1de69d0f094caffad141b0efb4581ba819e3da6b38c0993ac778309fb44bf2ad

    SHA512

    534240e12033399de720ac84245dabe016f1496a533cd7dc8a6c953b3950005171df91d4bb49ad2a09e56bb0804319da8aa6048b0ceaa529379073e8901924df

  • \Users\Admin\fikftkm.thj

    MD5

    f39651904de252f4e96ece7a5f844f8d

    SHA1

    a4d212ee9cba9ae0a79582182ac4776948349541

    SHA256

    02caf6e564c885476eded0b0558f70858a418fd8226eab2a9b79317500a471ae

    SHA512

    6431bfb563ef1050ac58fecaf72def360003b1ec0c31e4e31eefab838ee2b8eef582025cbd20162c6f146ef29313df1dfb2bdb1b5d01bb227b638b6e8d68733e

  • \Users\Admin\fikftkm.thj

    MD5

    5f0765c2bef2b169d71896cc95f7d120

    SHA1

    6d9aacb219c90e8c9b1e77b273b99a3b7193cbda

    SHA256

    1de69d0f094caffad141b0efb4581ba819e3da6b38c0993ac778309fb44bf2ad

    SHA512

    534240e12033399de720ac84245dabe016f1496a533cd7dc8a6c953b3950005171df91d4bb49ad2a09e56bb0804319da8aa6048b0ceaa529379073e8901924df

  • memory/1188-194-0x0000000000000000-mapping.dmp

  • memory/1192-179-0x0000000000000000-mapping.dmp

  • memory/1480-192-0x0000000000000000-mapping.dmp

  • memory/1516-186-0x0000000000000000-mapping.dmp

  • memory/1516-191-0x0000000002BA0000-0x0000000002BD9000-memory.dmp

    Filesize

    228KB

  • memory/2352-188-0x0000000000000000-mapping.dmp

  • memory/2704-190-0x0000000000000000-mapping.dmp

  • memory/3200-189-0x0000000000000000-mapping.dmp

  • memory/3780-183-0x0000000002BF0000-0x0000000002BF1000-memory.dmp

    Filesize

    4KB

  • memory/3780-184-0x0000000004A70000-0x0000000004AB2000-memory.dmp

    Filesize

    264KB

  • memory/3780-185-0x0000000004AC0000-0x0000000004AF9000-memory.dmp

    Filesize

    228KB

  • memory/3780-181-0x0000000000000000-mapping.dmp

  • memory/3868-187-0x0000000000000000-mapping.dmp

  • memory/4044-114-0x00007FF7CEBD0000-0x00007FF7D2186000-memory.dmp

    Filesize

    53.7MB

  • memory/4044-123-0x00007FFB7AA40000-0x00007FFB7C935000-memory.dmp

    Filesize

    31.0MB

  • memory/4044-122-0x00007FFB7C940000-0x00007FFB7DA2E000-memory.dmp

    Filesize

    16.9MB

  • memory/4044-121-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

    Filesize

    64KB

  • memory/4044-118-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

    Filesize

    64KB

  • memory/4044-117-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

    Filesize

    64KB

  • memory/4044-116-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

    Filesize

    64KB

  • memory/4044-115-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

    Filesize

    64KB