Analysis

  • max time kernel
    31s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    18-04-2023 19:59

General

  • Target

    318e760541475fe3dca33768a30e571590b5d9745b828822dcc80f16cb0e9ff9.exe

  • Size

    1.2MB

  • MD5

    00153c07f43443b297816cd4a5e5e51b

  • SHA1

    6a68c27c9bf8215bf23cf263aea99db0af4f85c2

  • SHA256

    318e760541475fe3dca33768a30e571590b5d9745b828822dcc80f16cb0e9ff9

  • SHA512

    2b1b065384e1acdc30b0ac5b2253a0870db2495133a519f565d995742b9540e55a86e2907cbc18e373b18b19835d86afe83a2a54ee1741a693ea0026eeee010b

  • SSDEEP

    6144:/jB/L9PSDy7X4tueT/eUArB/0cOLDiF63JQ:/j/6exO/8rB/3loQ

Malware Config

Signatures

  • Blackmoon, KrBanker

    Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.

  • Detect Blackmoon payload 7 IoCs
  • Gh0st RAT payload 1 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 41 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\318e760541475fe3dca33768a30e571590b5d9745b828822dcc80f16cb0e9ff9.exe
    "C:\Users\Admin\AppData\Local\Temp\318e760541475fe3dca33768a30e571590b5d9745b828822dcc80f16cb0e9ff9.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1540
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\318e760541475fe3dca33768a30e571590b5d9745b828822dcc80f16cb0e9ff9.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:556

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\318e760541475fe3dca33768a30e571590b5d9745b828822dcc80f16cb0e9ff9.txt

    Filesize

    120KB

    MD5

    3aea5b78bac5359a799c2714fecccd1a

    SHA1

    5d3203b328ecfc7a55c0ded1032d209e9f273367

    SHA256

    c05e763cab67cf9daf5be7a6a6cff2650223987a9693eaa119f69b2bbb6df6c3

    SHA512

    9513cc84a7ed3dd709d4affb03f6e286dcd43e82f33441c00a9d74d2b45449f2ee20baa8db46218d7a59d9e62fb7f95050ea305166e70f3e71dde39ccf07b6d3

  • C:\Users\Public\Documents\sjsw.log

    Filesize

    247B

    MD5

    01b53a5fc3061bc6419f39134da2b590

    SHA1

    4caa77b76aab6fbed0742c3a444005bb8ac5bf5c

    SHA256

    da32453f75666e64be83fe4124d42d9c8db64b74055e9bc7a77fb91a7865b335

    SHA512

    a312f13e78203ae29cecfd2b67199250329c225b722ec17dfbf5537036eee91ba9d434858b4b60108b95f1d3c95bfa0fe7fea1b7713df6e7832893596f540b0a

  • \Users\Admin\AppData\Local\Temp\aaaty.dll

    Filesize

    2KB

    MD5

    7943effe67a4647e06def2348949020e

    SHA1

    eabd561f0639a975de259633f63896d82c3f878d

    SHA256

    3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

    SHA512

    c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

  • \Users\Public\Documents\gjttn.dll

    Filesize

    2KB

    MD5

    7943effe67a4647e06def2348949020e

    SHA1

    eabd561f0639a975de259633f63896d82c3f878d

    SHA256

    3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

    SHA512

    c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

  • memory/1540-83-0x0000000000620000-0x0000000000623000-memory.dmp

    Filesize

    12KB

  • memory/1540-87-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/1540-61-0x00000000030E0000-0x0000000003146000-memory.dmp

    Filesize

    408KB

  • memory/1540-82-0x00000000030E0000-0x0000000003146000-memory.dmp

    Filesize

    408KB

  • memory/1540-57-0x00000000003C0000-0x00000000003F8000-memory.dmp

    Filesize

    224KB

  • memory/1540-85-0x0000000003B40000-0x0000000003C32000-memory.dmp

    Filesize

    968KB

  • memory/1540-86-0x0000000003B40000-0x0000000003C32000-memory.dmp

    Filesize

    968KB

  • memory/1540-62-0x00000000030E0000-0x0000000003146000-memory.dmp

    Filesize

    408KB

  • memory/1540-88-0x0000000003B40000-0x0000000003C32000-memory.dmp

    Filesize

    968KB

  • memory/1540-89-0x0000000010000000-0x0000000010017000-memory.dmp

    Filesize

    92KB

  • memory/1540-92-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/1540-102-0x00000000030E0000-0x0000000003146000-memory.dmp

    Filesize

    408KB

  • memory/1540-103-0x00000000030E0000-0x0000000003146000-memory.dmp

    Filesize

    408KB

  • memory/1540-105-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/1540-110-0x00000000003C0000-0x00000000003F8000-memory.dmp

    Filesize

    224KB