Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2023 19:32

General

  • Target

    f75097a82943df61ba0c412078536d6a3463682304ae7ebf03775878a4f1a1a9.exe

  • Size

    828KB

  • MD5

    8de5b1a93f56063625b11f6faa22e8a6

  • SHA1

    9fd9abdb39d35f66daba30710f147a70b79bb78f

  • SHA256

    f75097a82943df61ba0c412078536d6a3463682304ae7ebf03775878a4f1a1a9

  • SHA512

    b603e83ebd412d27834e1fa4762f609c0e2b5e9513ae92b20b3e4a5e775505ea27bff205ae94d70c10ff858b2e9f3c8f5aca55fb9531ecfca550b74c9215b8df

  • SSDEEP

    12288:l3ouotYCuoyHVkWQWpy8VgSf1/Y4gcl/t03Rbd2:l3ou/6y1kwySgM/Y4gcl/K3v2

Malware Config

Signatures

  • Blackmoon, KrBanker

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

  • Detect Blackmoon payload 4 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 1 IoCs
  • Enumerates connected drives 3 TTPs 22 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).

  • 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 6 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f75097a82943df61ba0c412078536d6a3463682304ae7ebf03775878a4f1a1a9.exe
    "C:\Users\Admin\AppData\Local\Temp\f75097a82943df61ba0c412078536d6a3463682304ae7ebf03775878a4f1a1a9.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:2788
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\f75097a82943df61ba0c412078536d6a3463682304ae7ebf03775878a4f1a1a9.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:2752

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\f75097a82943df61ba0c412078536d6a3463682304ae7ebf03775878a4f1a1a9.txt

    Filesize

    649KB

    MD5

    d504f3e79833f38f69ab0696a9ed8205

    SHA1

    88ca3e8ec7886048102125539b22b2e7d3ec3dc5

    SHA256

    174c0c0d80346d35c31674baf20f06040341ebd6b5103c762e64fb7e1b4a244c

    SHA512

    bc28d5566b5569f3a69ceb6b7c6db200aa22d6fcc41d4c03b18472143a44b58e8e4afa7d445c573d75f2cd3d375ae3cf568bc23f13e342cc80ee9f84c74638c1

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

    Filesize

    278B

    MD5

    7a0f22061536761c18cb82be2fa081e1

    SHA1

    2c297dc706eb2ef1b906d8b52aff66b72cf59f43

    SHA256

    ebf28f400ca48c81d349af96372098dc245f57a57cb0cd4defae24035922b5e4

    SHA512

    656f2804f436a850421420068c13d0410aa25cd53be7ed7bcfb06b6c852dc047b88f73e94cd051868105e8f2028acb02cec0166bbee3fab3548ee89aa269e0d1

  • \Users\Public\Documents\xffvd.dll

    Filesize

    2KB

    MD5

    7943effe67a4647e06def2348949020e

    SHA1

    eabd561f0639a975de259633f63896d82c3f878d

    SHA256

    3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

    SHA512

    c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

  • memory/2788-28-0x00000000041E0000-0x00000000042D3000-memory.dmp

    Filesize

    972KB

  • memory/2788-31-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/2788-7-0x0000000003AD0000-0x0000000003BBB000-memory.dmp

    Filesize

    940KB

  • memory/2788-4-0x0000000003AD0000-0x0000000003BBB000-memory.dmp

    Filesize

    940KB

  • memory/2788-27-0x00000000041E0000-0x00000000042D3000-memory.dmp

    Filesize

    972KB

  • memory/2788-3-0x0000000003AD0000-0x0000000003BBB000-memory.dmp

    Filesize

    940KB

  • memory/2788-29-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/2788-5-0x0000000001FA0000-0x0000000001FA3000-memory.dmp

    Filesize

    12KB

  • memory/2788-30-0x00000000041E0000-0x00000000042D3000-memory.dmp

    Filesize

    972KB

  • memory/2788-32-0x0000000010000000-0x0000000010017000-memory.dmp

    Filesize

    92KB

  • memory/2788-35-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/2788-50-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/2788-45-0x0000000003AD0000-0x0000000003BBB000-memory.dmp

    Filesize

    940KB

  • memory/2788-52-0x0000000003AD0000-0x0000000003BBB000-memory.dmp

    Filesize

    940KB