Analysis

  • max time kernel
    31s
  • max time network
    61s
  • platform
    windows10_x64
  • resource
    win10-de-20211104
  • submitted
    25-11-2021 16:30

General

  • Target

    49b6a91ea8617042fc5658eb7bc63883ab63253d168219d7b8ac5300c72e2080.dll

  • Size

    653KB

  • MD5

    ded41dc44f65e6d6225188590697d3d6

  • SHA1

    ae07c07f550a5c6b5c01901c473ebeb952d13d2d

  • SHA256

    49b6a91ea8617042fc5658eb7bc63883ab63253d168219d7b8ac5300c72e2080

  • SHA512

    a24c3cac4e163ac0b5d15a47a77d1354ae2cd7437417645f8a8bad482dc1f1fb02fdd12f4be0d5ebde59a99661cc1b53bb2459548fdaf3abbc2b6ffb9dcdc0b9

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 registry class 44 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\49b6a91ea8617042fc5658eb7bc63883ab63253d168219d7b8ac5300c72e2080.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4484
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\49b6a91ea8617042fc5658eb7bc63883ab63253d168219d7b8ac5300c72e2080.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\49b6a91ea8617042fc5658eb7bc63883ab63253d168219d7b8ac5300c72e2080.dll",Control_RunDLL
        3⤵
        • Drops file in System32 directory
        • Suspicious behavior: RenamesItself
        • Suspicious use of WriteProcessMemory
        PID:4204
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Mvfbcwvmvma\sarowejpam.bxv",VXAumg
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:800
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Mvfbcwvmvma\sarowejpam.bxv",Control_RunDLL
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:3224
  • 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:4192

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Discovery

System Information Discovery

1
T1082

Replay Monitor

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Downloads

  • memory/800-138-0x0000000000000000-mapping.dmp
  • memory/800-140-0x0000000000F20000-0x0000000000F48000-memory.dmp
    Filesize

    160KB

  • memory/1752-119-0x00000000047B0000-0x00000000047D8000-memory.dmp
    Filesize

    160KB

  • memory/1752-118-0x0000000000000000-mapping.dmp
  • memory/3224-146-0x0000000000700000-0x0000000000728000-memory.dmp
    Filesize

    160KB

  • memory/3224-145-0x0000000000000000-mapping.dmp
  • memory/3224-149-0x0000000000E30000-0x0000000000E58000-memory.dmp
    Filesize

    160KB

  • memory/3224-158-0x0000000004970000-0x0000000004998000-memory.dmp
    Filesize

    160KB

  • memory/3224-161-0x0000000004A50000-0x0000000004A78000-memory.dmp
    Filesize

    160KB

  • memory/4204-129-0x0000000004890000-0x00000000048B8000-memory.dmp
    Filesize

    160KB

  • memory/4204-132-0x0000000004A20000-0x0000000004A48000-memory.dmp
    Filesize

    160KB

  • memory/4204-135-0x0000000004A80000-0x0000000004AA8000-memory.dmp
    Filesize

    160KB

  • memory/4204-126-0x00000000046B0000-0x00000000046D8000-memory.dmp
    Filesize

    160KB

  • memory/4204-139-0x0000000004BE0000-0x0000000004C08000-memory.dmp
    Filesize

    160KB

  • memory/4204-123-0x0000000000D60000-0x0000000000D88000-memory.dmp
    Filesize

    160KB

  • memory/4204-122-0x0000000000000000-mapping.dmp