Analysis

  • max time kernel
    134s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    14-03-2023 04:18

General

  • Target

    78820d3214565b9958d30b12809d7f4640b901f2fd6cfa270230bcef8ae65031.exe

  • Size

    318KB

  • MD5

    5ce44008c4372001cb7678bc7dc8f00c

  • SHA1

    ba946a7a4be8f025bce238468ce3d2cd72ca313d

  • SHA256

    78820d3214565b9958d30b12809d7f4640b901f2fd6cfa270230bcef8ae65031

  • SHA512

    9b0ea574bb837a7ca2419a482e3631d3036f3172ac36ccde18be37039a7286e1fc69439bc75c400ba72ad4b549898cd28efd9516d00a0b8bb404b88888e723ba

  • SSDEEP

    6144:ly6a+OEqfTG1Rljw5zudnuIyOQ5UDz9uLXtUSRGyQ/LLH/iDN7pLKM:Y+OD06AdnVyZUnULXtUSR78vWN7j

Malware Config

Signatures

  • Blackmoon, KrBanker

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

  • Detect Blackmoon payload 5 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 1 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 AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\78820d3214565b9958d30b12809d7f4640b901f2fd6cfa270230bcef8ae65031.exe
    "C:\Users\Admin\AppData\Local\Temp\78820d3214565b9958d30b12809d7f4640b901f2fd6cfa270230bcef8ae65031.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 AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2012
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\78820d3214565b9958d30b12809d7f4640b901f2fd6cfa270230bcef8ae65031.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:1884

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\78820d3214565b9958d30b12809d7f4640b901f2fd6cfa270230bcef8ae65031.txt

    Filesize

    120KB

    MD5

    3aea5b78bac5359a799c2714fecccd1a

    SHA1

    5d3203b328ecfc7a55c0ded1032d209e9f273367

    SHA256

    c05e763cab67cf9daf5be7a6a6cff2650223987a9693eaa119f69b2bbb6df6c3

    SHA512

    9513cc84a7ed3dd709d4affb03f6e286dcd43e82f33441c00a9d74d2b45449f2ee20baa8db46218d7a59d9e62fb7f95050ea305166e70f3e71dde39ccf07b6d3

  • \Users\Public\Documents\nkkj.dll

    Filesize

    2KB

    MD5

    7943effe67a4647e06def2348949020e

    SHA1

    eabd561f0639a975de259633f63896d82c3f878d

    SHA256

    3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

    SHA512

    c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

  • memory/2012-82-0x0000000003B80000-0x0000000003C72000-memory.dmp

    Filesize

    968KB

  • memory/2012-83-0x0000000003B80000-0x0000000003C72000-memory.dmp

    Filesize

    968KB

  • memory/2012-62-0x0000000002860000-0x00000000028C6000-memory.dmp

    Filesize

    408KB

  • memory/2012-61-0x0000000000230000-0x0000000000233000-memory.dmp

    Filesize

    12KB

  • memory/2012-63-0x00000000003D0000-0x00000000003D3000-memory.dmp

    Filesize

    12KB

  • memory/2012-57-0x0000000002860000-0x00000000028C6000-memory.dmp

    Filesize

    408KB

  • memory/2012-58-0x0000000002860000-0x00000000028C6000-memory.dmp

    Filesize

    408KB

  • memory/2012-60-0x0000000000400000-0x00000000004F9000-memory.dmp

    Filesize

    996KB

  • memory/2012-84-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2012-85-0x0000000003B80000-0x0000000003C72000-memory.dmp

    Filesize

    968KB

  • memory/2012-86-0x0000000010000000-0x0000000010017000-memory.dmp

    Filesize

    92KB

  • memory/2012-89-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2012-99-0x0000000002860000-0x00000000028C6000-memory.dmp

    Filesize

    408KB

  • memory/2012-101-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2012-100-0x0000000002860000-0x00000000028C6000-memory.dmp

    Filesize

    408KB

  • memory/2012-102-0x0000000000400000-0x00000000004F9000-memory.dmp

    Filesize

    996KB