Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-11-2022 23:23

General

  • Target

    80d858400f80d34b16842599f65f7dcd3406cc3cc9c14116862d51971389fa04.exe

  • Size

    3.3MB

  • MD5

    d452b23310b0c7c1d9fe5783236af02d

  • SHA1

    d57be2bc6046bf0d35196d98739dd415bb6470d7

  • SHA256

    80d858400f80d34b16842599f65f7dcd3406cc3cc9c14116862d51971389fa04

  • SHA512

    26f0d73f3ec0b2348fbbba2d2b4f24495ebb3c2310db9647cf4413e8e74c6e0bfe97d8bda31c68e99d1ef18ed9133acc6cbc699cbdb1864a4d58b60d9f2e2bc4

  • SSDEEP

    49152:WRp5MRKkk1xIkBm/7LmoAial+YQovsGOlMQX9q+VUTEaDNf00GoC06:WR5VoHmFial+cOlrxtaDNtG0

Malware Config

Signatures

  • Modifies AppInit DLL entries 2 TTPs
  • Loads dropped DLL 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 1 IoCs
  • Modifies data under HKEY_USERS 53 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\80d858400f80d34b16842599f65f7dcd3406cc3cc9c14116862d51971389fa04.exe
    "C:\Users\Admin\AppData\Local\Temp\80d858400f80d34b16842599f65f7dcd3406cc3cc9c14116862d51971389fa04.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4732
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "c:\Program Files (x86)\AppendEngine\AppendEngine.dll",serv -install
      2⤵
      • Loads dropped DLL
      PID:1788
  • C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "c:\Program Files (x86)\AppendEngine\AppendEngine.dll",serv
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:332
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "c:\Program Files (x86)\AppendEngine\AppendEngine.dll",serv
      2⤵
      • Loads dropped DLL
      • Modifies data under HKEY_USERS
      PID:320

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\AppendEngine\AppendEngine.dll

    Filesize

    2.1MB

    MD5

    240fdf6e42d1a6ea46acc603fb314e23

    SHA1

    aae20b7012bb1c66756eb371a821aafec6cb5f8f

    SHA256

    4464d69d86eb74b858361f90913f79f849a886ed36eee82e506b30ccb31a147e

    SHA512

    5b5d50fada6a5abaf27469492c8318a5cca499d4ce09e7eaaf00448876cabed9e743c375c5593db13f9acea19e3fca0f5b8bea28c5696ad13e6ad183daa4df11

  • C:\Program Files (x86)\AppendEngine\AppendEngine.dll

    Filesize

    2.1MB

    MD5

    240fdf6e42d1a6ea46acc603fb314e23

    SHA1

    aae20b7012bb1c66756eb371a821aafec6cb5f8f

    SHA256

    4464d69d86eb74b858361f90913f79f849a886ed36eee82e506b30ccb31a147e

    SHA512

    5b5d50fada6a5abaf27469492c8318a5cca499d4ce09e7eaaf00448876cabed9e743c375c5593db13f9acea19e3fca0f5b8bea28c5696ad13e6ad183daa4df11

  • C:\Users\Admin\AppData\Local\Temp\tf3f957d74.dll

    Filesize

    2.1MB

    MD5

    240fdf6e42d1a6ea46acc603fb314e23

    SHA1

    aae20b7012bb1c66756eb371a821aafec6cb5f8f

    SHA256

    4464d69d86eb74b858361f90913f79f849a886ed36eee82e506b30ccb31a147e

    SHA512

    5b5d50fada6a5abaf27469492c8318a5cca499d4ce09e7eaaf00448876cabed9e743c375c5593db13f9acea19e3fca0f5b8bea28c5696ad13e6ad183daa4df11

  • \??\c:\Program Files (x86)\AppendEngine\AppendEngine.dll

    Filesize

    2.1MB

    MD5

    240fdf6e42d1a6ea46acc603fb314e23

    SHA1

    aae20b7012bb1c66756eb371a821aafec6cb5f8f

    SHA256

    4464d69d86eb74b858361f90913f79f849a886ed36eee82e506b30ccb31a147e

    SHA512

    5b5d50fada6a5abaf27469492c8318a5cca499d4ce09e7eaaf00448876cabed9e743c375c5593db13f9acea19e3fca0f5b8bea28c5696ad13e6ad183daa4df11

  • memory/320-151-0x0000000000000000-mapping.dmp

  • memory/320-153-0x000000007F030000-0x000000007F388000-memory.dmp

    Filesize

    3.3MB

  • memory/1788-143-0x0000000000000000-mapping.dmp

  • memory/1788-146-0x000000007ECF0000-0x000000007F048000-memory.dmp

    Filesize

    3.3MB

  • memory/4732-132-0x000000007F3B0000-0x000000007F6F4000-memory.dmp

    Filesize

    3.3MB

  • memory/4732-138-0x000000007EF00000-0x000000007F258000-memory.dmp

    Filesize

    3.3MB