Analysis

  • max time kernel
    60s
  • max time network
    60s
  • platform
    windows10_x64
  • resource
    win10-de-20211104
  • submitted
    25-11-2021 16:31

General

  • Target

    4ebf519c38ab1d80f2f08cf03a6b0bee0b5f9eea610c3483f8f21e6f4669753b.dll

  • Size

    653KB

  • MD5

    7b1ae04255d0b674fc776b101135a17e

  • SHA1

    8869ee20685d8b9df9e8c5c7749e119597363e0e

  • SHA256

    4ebf519c38ab1d80f2f08cf03a6b0bee0b5f9eea610c3483f8f21e6f4669753b

  • SHA512

    274029e5ca10a39bcbbcc5926181256be374bdd972d0106efe4141e4453f23ac990946c42bbb63597bc24a39f3429a64a23df8870a6cc9b4aeb71b885ffabb5c

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
  • suricata: ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Dridex/Trickbot CnC)

    suricata: ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Dridex/Trickbot CnC)

  • suricata: ET MALWARE W32/Emotet CnC Beacon 3

    suricata: ET MALWARE W32/Emotet CnC Beacon 3

  • Blocklisted process makes network request 2 IoCs
  • Modifies data under HKEY_USERS 21 IoCs
  • Modifies registry class 44 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ebf519c38ab1d80f2f08cf03a6b0bee0b5f9eea610c3483f8f21e6f4669753b.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2712
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ebf519c38ab1d80f2f08cf03a6b0bee0b5f9eea610c3483f8f21e6f4669753b.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3636
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\AppData\Local\Temp\4ebf519c38ab1d80f2f08cf03a6b0bee0b5f9eea610c3483f8f21e6f4669753b.dll",Control_RunDLL
        3⤵
        • Blocklisted process makes network request
        • Suspicious behavior: EnumeratesProcesses
        PID:832
  • 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:2220
  • 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:2476

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/832-122-0x0000000000000000-mapping.dmp
  • memory/832-123-0x0000000003F00000-0x0000000003F28000-memory.dmp
    Filesize

    160KB

  • memory/832-126-0x00000000041E0000-0x0000000004208000-memory.dmp
    Filesize

    160KB

  • memory/832-129-0x0000000004730000-0x0000000004758000-memory.dmp
    Filesize

    160KB

  • memory/832-132-0x0000000004810000-0x0000000004838000-memory.dmp
    Filesize

    160KB

  • memory/832-135-0x00000000048F0000-0x0000000004918000-memory.dmp
    Filesize

    160KB

  • memory/832-138-0x00000000049D0000-0x00000000049F8000-memory.dmp
    Filesize

    160KB

  • memory/832-141-0x0000000004AD0000-0x0000000004AF8000-memory.dmp
    Filesize

    160KB

  • memory/3636-118-0x0000000000000000-mapping.dmp
  • memory/3636-119-0x0000000004110000-0x0000000004138000-memory.dmp
    Filesize

    160KB