Analysis

  • max time kernel
    130s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    20-06-2023 19:45

General

  • Target

    501c8aab7abdb95b8cf25c8f7f8ab6b63c2bc77f50b91fc1a3ed9b81c89b0a69.exe

  • Size

    682KB

  • MD5

    a5fd31d7c893a380ff8cb3ba80b1a5d2

  • SHA1

    84524b4b1806a8f19daa494ef25f93a790a116d8

  • SHA256

    501c8aab7abdb95b8cf25c8f7f8ab6b63c2bc77f50b91fc1a3ed9b81c89b0a69

  • SHA512

    411508552615de45f516c33bc9badb2b1d42687def80ccecccafafee3f7324c8a2460afd6616cc6d62197d1ee9ef0fba9f76df2f3addd99fd7376d59d5563ee9

  • SSDEEP

    12288:5GArcfDOSoS+XdhRsklUjq/mULmyej9ZWBymds66CNmKsPt:ECS0XrI5IU2xds66

Malware Config

Signatures

  • Blackmoon, KrBanker

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

  • Detect Blackmoon payload 12 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).

  • 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\501c8aab7abdb95b8cf25c8f7f8ab6b63c2bc77f50b91fc1a3ed9b81c89b0a69.exe
    "C:\Users\Admin\AppData\Local\Temp\501c8aab7abdb95b8cf25c8f7f8ab6b63c2bc77f50b91fc1a3ed9b81c89b0a69.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:1092
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\501c8aab7abdb95b8cf25c8f7f8ab6b63c2bc77f50b91fc1a3ed9b81c89b0a69.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:268

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\501c8aab7abdb95b8cf25c8f7f8ab6b63c2bc77f50b91fc1a3ed9b81c89b0a69.txt
    Filesize

    120KB

    MD5

    3aea5b78bac5359a799c2714fecccd1a

    SHA1

    5d3203b328ecfc7a55c0ded1032d209e9f273367

    SHA256

    c05e763cab67cf9daf5be7a6a6cff2650223987a9693eaa119f69b2bbb6df6c3

    SHA512

    9513cc84a7ed3dd709d4affb03f6e286dcd43e82f33441c00a9d74d2b45449f2ee20baa8db46218d7a59d9e62fb7f95050ea305166e70f3e71dde39ccf07b6d3

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

    196B

    MD5

    19511a73010ec6482ecd4615fcd87a26

    SHA1

    4b9bd27445c97a1cf2ec6bc4f9a563e10cecb2b3

    SHA256

    c48ba27e00d1eea5e354fc73ebccec58ece5f8c3776c689432aea51c24c378f4

    SHA512

    ef7d32f03a8aacb460b4a190288d9386940dee99745681314acf00d22b253b0b8da547d10a38fe37493c48cbea42b671bed6547b2b7d8926886c8969dd5d5b54

  • \Users\Admin\AppData\Local\Temp\ATTBN.dll
    Filesize

    2KB

    MD5

    7943effe67a4647e06def2348949020e

    SHA1

    eabd561f0639a975de259633f63896d82c3f878d

    SHA256

    3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

    SHA512

    c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

  • \Users\Public\Documents\ahui.dll
    Filesize

    2KB

    MD5

    7943effe67a4647e06def2348949020e

    SHA1

    eabd561f0639a975de259633f63896d82c3f878d

    SHA256

    3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

    SHA512

    c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

  • memory/1092-61-0x0000000000390000-0x00000000003C8000-memory.dmp
    Filesize

    224KB

  • memory/1092-89-0x00000000044B0000-0x00000000045A2000-memory.dmp
    Filesize

    968KB

  • memory/1092-60-0x0000000000400000-0x0000000000591000-memory.dmp
    Filesize

    1.6MB

  • memory/1092-65-0x0000000002D60000-0x0000000002DC7000-memory.dmp
    Filesize

    412KB

  • memory/1092-66-0x0000000002D60000-0x0000000002DC7000-memory.dmp
    Filesize

    412KB

  • memory/1092-56-0x0000000000400000-0x0000000000591000-memory.dmp
    Filesize

    1.6MB

  • memory/1092-55-0x0000000000400000-0x0000000000591000-memory.dmp
    Filesize

    1.6MB

  • memory/1092-86-0x0000000002D60000-0x0000000002DC7000-memory.dmp
    Filesize

    412KB

  • memory/1092-87-0x00000000003D0000-0x00000000003D3000-memory.dmp
    Filesize

    12KB

  • memory/1092-54-0x0000000000400000-0x0000000000591000-memory.dmp
    Filesize

    1.6MB

  • memory/1092-90-0x00000000044B0000-0x00000000045A2000-memory.dmp
    Filesize

    968KB

  • memory/1092-91-0x0000000000400000-0x0000000000427000-memory.dmp
    Filesize

    156KB

  • memory/1092-92-0x00000000044B0000-0x00000000045A2000-memory.dmp
    Filesize

    968KB

  • memory/1092-93-0x0000000010000000-0x0000000010017000-memory.dmp
    Filesize

    92KB

  • memory/1092-96-0x0000000000400000-0x0000000000427000-memory.dmp
    Filesize

    156KB

  • memory/1092-106-0x0000000002D60000-0x0000000002DC7000-memory.dmp
    Filesize

    412KB

  • memory/1092-108-0x0000000002D60000-0x0000000002DC7000-memory.dmp
    Filesize

    412KB

  • memory/1092-109-0x0000000000390000-0x00000000003C8000-memory.dmp
    Filesize

    224KB

  • memory/1092-110-0x0000000000400000-0x0000000000591000-memory.dmp
    Filesize

    1.6MB