Analysis

  • max time kernel
    60s
  • max time network
    57s
  • platform
    windows10_x64
  • resource
    win10-de-20211104
  • submitted
    25-11-2021 16:22

General

  • Target

    f2c5704ac130dc26e917799e33d585b127cd79c55ad51f031925de7051e8d116.dll

  • Size

    653KB

  • MD5

    d580f4eae87850bef80465f013dc9f5d

  • SHA1

    c275abdf620a8beb7034bb5a17d1f50c970ecc12

  • SHA256

    f2c5704ac130dc26e917799e33d585b127cd79c55ad51f031925de7051e8d116

  • SHA512

    c7bdd6b83cb111eea50927ae73b6409bff69d88fd2af6b9c0c79f9184de6d6e5f07081e5cecae7cfe1cbbf9d083f2811dfb8f5732f8e51c35d58210eff30e61a

Malware Config

Extracted

Family

emotet

Botnet

Epoch5

C2

51.178.61.60:443

168.197.250.14:80

45.79.33.48:8080

196.44.98.190:8080

177.72.80.14:7080

51.210.242.234:8080

185.148.169.10:8080

142.4.219.173:8080

78.47.204.80:443

78.46.73.125:443

37.44.244.177:8080

37.59.209.141:8080

191.252.103.16:80

54.38.242.185:443

85.214.67.203:8080

54.37.228.122:443

207.148.81.119:8080

195.77.239.39:8080

66.42.57.149:443

195.154.146.35:443

eck1.plain
ecs1.plain

Signatures

  • Emotet

    Emotet is a trojan that is primarily spread through spam emails.

  • Registers COM server for autorun 1 TTPs
  • Blocklisted process makes network request 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies data under HKEY_USERS 21 IoCs
  • Modifies registry class 44 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\f2c5704ac130dc26e917799e33d585b127cd79c55ad51f031925de7051e8d116.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4456
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\f2c5704ac130dc26e917799e33d585b127cd79c55ad51f031925de7051e8d116.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1752
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\AppData\Local\Temp\f2c5704ac130dc26e917799e33d585b127cd79c55ad51f031925de7051e8d116.dll",Control_RunDLL
        3⤵
        • Drops file in System32 directory
        • Suspicious behavior: RenamesItself
        • Suspicious use of WriteProcessMemory
        PID:4184
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Fgttf\otxrqlcfvfdaza.nii",fBDqMChHBEi
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:772
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Fgttf\otxrqlcfvfdaza.nii",Control_RunDLL
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:3232
  • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.220.1024.0005\FileSyncConfig.exe
    "C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.220.1024.0005\FileSyncConfig.exe"
    1⤵
    • Modifies registry class
    PID:4768
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe" /frequentupdate SCHEDULEDTASK displaylevel=False
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:2092

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/772-138-0x0000000000000000-mapping.dmp
  • memory/772-141-0x0000000004700000-0x0000000004728000-memory.dmp
    Filesize

    160KB

  • memory/1752-119-0x0000000004610000-0x0000000004638000-memory.dmp
    Filesize

    160KB

  • memory/1752-118-0x0000000000000000-mapping.dmp
  • memory/3232-146-0x0000000003230000-0x0000000003258000-memory.dmp
    Filesize

    160KB

  • memory/3232-152-0x0000000005170000-0x0000000005198000-memory.dmp
    Filesize

    160KB

  • memory/3232-164-0x00000000054F0000-0x0000000005518000-memory.dmp
    Filesize

    160KB

  • memory/3232-161-0x0000000005410000-0x0000000005438000-memory.dmp
    Filesize

    160KB

  • memory/3232-158-0x0000000005330000-0x0000000005358000-memory.dmp
    Filesize

    160KB

  • memory/3232-155-0x0000000005250000-0x0000000005278000-memory.dmp
    Filesize

    160KB

  • memory/3232-149-0x0000000004F90000-0x0000000004FB8000-memory.dmp
    Filesize

    160KB

  • memory/3232-145-0x0000000000000000-mapping.dmp
  • memory/4184-122-0x0000000000000000-mapping.dmp
  • memory/4184-123-0x0000000004210000-0x0000000004238000-memory.dmp
    Filesize

    160KB

  • memory/4184-129-0x0000000004910000-0x0000000004938000-memory.dmp
    Filesize

    160KB

  • memory/4184-139-0x0000000004C70000-0x0000000004C98000-memory.dmp
    Filesize

    160KB

  • memory/4184-126-0x0000000004720000-0x0000000004748000-memory.dmp
    Filesize

    160KB

  • memory/4184-135-0x0000000004B10000-0x0000000004B38000-memory.dmp
    Filesize

    160KB

  • memory/4184-132-0x0000000004AB0000-0x0000000004AD8000-memory.dmp
    Filesize

    160KB