Overview

overview

10

Static

static

1

af831bff9f...6b.exe

windows7-x64

10

af831bff9f...6b.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-03-2023 04:15

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General

  • Target

    af831bff9f27dca7c2595819bd77f4b0cdbd477ae0482d7e80517f8e6364086b.exe

  • Size

    422KB

  • MD5

    749e55e9bf42bac10f00077e595fae36

  • SHA1

    006f4dc6c68f57dde5f658df051f36e66d3ad33b

  • SHA256

    af831bff9f27dca7c2595819bd77f4b0cdbd477ae0482d7e80517f8e6364086b

  • SHA512

    5772a0cde2c36ac97fc668d9d3e0612df693c202ccf20cd9c5680052236fe399f1bb8f9789328cee8f2d0b95969bbe2ad2b38b3f3dbbf208f54928a76cdb8adf

  • SSDEEP

    6144:qybCfaIxuvoVaLnHSG2ST97S4D3uRKFE6/47HJeauZ34XBDB:yxuSoSG2wFS4D3xEi4bJFf

Score
10/10
blackmoongh0stratbankerpersistencerattrojan

Malware Config

Signatures

  • Blackmoon, KrBanker

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

    trojanbankerblackmoon
  • Detect Blackmoon payload 6 IoCs
  • Gh0st RAT payload 3 IoCs
  • Gh0strat

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

    ratgh0strat
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\af831bff9f27dca7c2595819bd77f4b0cdbd477ae0482d7e80517f8e6364086b.exe
    "C:\Users\Admin\AppData\Local\Temp\af831bff9f27dca7c2595819bd77f4b0cdbd477ae0482d7e80517f8e6364086b.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • Checks processor information in registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\af831bff9f27dca7c2595819bd77f4b0cdbd477ae0482d7e80517f8e6364086b.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:2084
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 2176
      2⤵
      • Program crash
      PID:2672
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2040 -ip 2040
    1⤵
      PID:2140

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    4
    T1082

    Peripheral Device Discovery

    1
    T1120

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\af831bff9f27dca7c2595819bd77f4b0cdbd477ae0482d7e80517f8e6364086b.txt
      Filesize

      120KB

      MD5

      3aea5b78bac5359a799c2714fecccd1a

      SHA1

      5d3203b328ecfc7a55c0ded1032d209e9f273367

      SHA256

      c05e763cab67cf9daf5be7a6a6cff2650223987a9693eaa119f69b2bbb6df6c3

      SHA512

      9513cc84a7ed3dd709d4affb03f6e286dcd43e82f33441c00a9d74d2b45449f2ee20baa8db46218d7a59d9e62fb7f95050ea305166e70f3e71dde39ccf07b6d3

      Download Submit
    • C:\Users\Public\Documents\nkkj.dll
      Filesize

      2KB

      MD5

      7943effe67a4647e06def2348949020e

      SHA1

      eabd561f0639a975de259633f63896d82c3f878d

      SHA256

      3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

      SHA512

      c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

      Download Submit
    • C:\Users\Public\Documents\sjsw.log
      Filesize

      251B

      MD5

      706166376c141d43ec76c5b3248f0094

      SHA1

      a2a16cd2591220cc9f941ceca8d40271d51a300b

      SHA256

      e6f17db5e8a7b60b76361887af9d24d42c37821bf31f8d39b41e046cee70ad38

      SHA512

      e7de7b9b35012247ae83cf767cc6f3fd9f18ef082bea6e8df5dbef5f1bc58a791de09780fa0fc15a2de233c59aa2ea5cdee7f9915322011759767578e9026947

      Download Submit
    • memory/2040-142-0x00000000032A0000-0x0000000003306000-memory.dmp
      Filesize

      408KB

      Download
    • memory/2040-169-0x0000000003EE0000-0x0000000003FD2000-memory.dmp
      Filesize

      968KB

      Download
    • memory/2040-133-0x0000000000400000-0x000000000052D000-memory.dmp
      Filesize

      1.2MB

      Download
    • memory/2040-141-0x00000000032A0000-0x0000000003306000-memory.dmp
      Filesize

      408KB

      Download
    • memory/2040-144-0x00000000032A0000-0x0000000003306000-memory.dmp
      Filesize

      408KB

      Download
    • memory/2040-145-0x0000000000740000-0x0000000000743000-memory.dmp
      Filesize

      12KB

      Download
    • memory/2040-135-0x0000000000400000-0x000000000052D000-memory.dmp
      Filesize

      1.2MB

      Download
    • memory/2040-134-0x0000000000640000-0x0000000000643000-memory.dmp
      Filesize

      12KB

      Download
    • memory/2040-168-0x0000000003EE0000-0x0000000003FD2000-memory.dmp
      Filesize

      968KB

      Download
    • memory/2040-136-0x0000000000400000-0x000000000052D000-memory.dmp
      Filesize

      1.2MB

      Download
    • memory/2040-170-0x0000000000400000-0x0000000000427000-memory.dmp
      Filesize

      156KB

      Download
    • memory/2040-171-0x0000000003EE0000-0x0000000003FD2000-memory.dmp
      Filesize

      968KB

      Download
    • memory/2040-173-0x0000000010000000-0x0000000010017000-memory.dmp
      Filesize

      92KB

      Download
    • memory/2040-172-0x0000000010001000-0x000000001000F000-memory.dmp
      Filesize

      56KB

      Download
    • memory/2040-175-0x0000000000400000-0x0000000000427000-memory.dmp
      Filesize

      156KB

      Download
    • memory/2040-184-0x00000000032A0000-0x0000000003306000-memory.dmp
      Filesize

      408KB

      Download
    • memory/2040-186-0x00000000032A0000-0x0000000003306000-memory.dmp
      Filesize

      408KB

      Download
    • memory/2040-187-0x0000000010000000-0x0000000010003000-memory.dmp
      Filesize

      12KB

      Download
    • memory/2040-189-0x00000000032A0000-0x0000000003306000-memory.dmp
      Filesize

      408KB

      Download
    • memory/2040-188-0x0000000000400000-0x0000000000427000-memory.dmp
      Filesize

      156KB

      Download