Analysis

  • max time kernel
    131s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-06-2024 12:30

General

  • Target

    2024-06-02_bb4dbc367ea4bc382d5643b295b63877_stop.exe

  • Size

    1.1MB

  • MD5

    bb4dbc367ea4bc382d5643b295b63877

  • SHA1

    854f85a6aef15c6a8f583e51bd89f8982424e4cb

  • SHA256

    2d1c0fd8ad642c4e20911b02c5546f81b6e1eeb26eeea1d39976f7f33d3cb65a

  • SHA512

    a342565242a6d315aeea8b8f3e97f8e373d3f35647e536ac56d7ad7a88c45db87448818c89b428a23d968f09143b7d1b09f54860e56a433a739c2717be6dce0f

  • SSDEEP

    24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO89WQHUq7:F0dwAYZt6C31WeTVRPOh97Uq7

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes
  • extension

    .qepi

  • offline_id

    jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1

  • payload_url

    http://sdfjhuz.com/dl/build2.exe

    http://cajgtus.com/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0867PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 1 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-02_bb4dbc367ea4bc382d5643b295b63877_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_bb4dbc367ea4bc382d5643b295b63877_stop.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3620
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\969e3745-0ceb-47b1-94e2-5f15eabe1a65" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      PID:2748
    • C:\Users\Admin\AppData\Local\Temp\2024-06-02_bb4dbc367ea4bc382d5643b295b63877_stop.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-06-02_bb4dbc367ea4bc382d5643b295b63877_stop.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1984

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

File and Directory Permissions Modification

1
T1222

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
    Filesize

    1KB

    MD5

    8999aa854e3cae2cc82a314dc12420a3

    SHA1

    e9d06ba69f37453368b35b0f601e3c391fc36e86

    SHA256

    d9ce037a484b0cd8841a9f2ff72f44e4c1106b4edd257f76eaf4203e345cf196

    SHA512

    b840dfcdc27db311280d0731f9b4fc36e0a1a7e16090d6e4936bb1d011994b9a585b2393af9aea80ace8468430309cd26acc5220d39a4173574c4d5198f644be

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
    Filesize

    724B

    MD5

    8202a1cd02e7d69597995cabbe881a12

    SHA1

    8858d9d934b7aa9330ee73de6c476acf19929ff6

    SHA256

    58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

    SHA512

    97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
    Filesize

    410B

    MD5

    ee3933a325c8cadcb564b14626d7fba8

    SHA1

    31829efb39df2904f0fef356a4028c16cd80bb45

    SHA256

    cdd3d81bf12b42ad73076df555c7efc6a32584a3ddde249b7b3b534d3711f7f6

    SHA512

    d430995a508a48ba9ab5c81b7ba0b53559f2f7c15b1ed900d456a1dc56330027286d0ce6f71ae1a92b3c61057db5ce308794b3ac5a7391c8e62d75aff860517c

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
    Filesize

    392B

    MD5

    55c00275df7ce71d5070f0195b1b74a7

    SHA1

    c1f7c05e9d2439a0fe9c7931f3f21b9872c65339

    SHA256

    68b30fc9d648fa92b902d1d45a871859d25c928d2691ab093572bb2a48022dd1

    SHA512

    5de144af21121df93db2f2c39cd12f2c475379986ab10378778d7ea77226c4c03011468a2c75f23acda9f26da16a6edf077c601f9d7a06a8677e4eb68ef2dde7

  • C:\Users\Admin\AppData\Local\969e3745-0ceb-47b1-94e2-5f15eabe1a65\2024-06-02_bb4dbc367ea4bc382d5643b295b63877_stop.exe
    Filesize

    1.1MB

    MD5

    bb4dbc367ea4bc382d5643b295b63877

    SHA1

    854f85a6aef15c6a8f583e51bd89f8982424e4cb

    SHA256

    2d1c0fd8ad642c4e20911b02c5546f81b6e1eeb26eeea1d39976f7f33d3cb65a

    SHA512

    a342565242a6d315aeea8b8f3e97f8e373d3f35647e536ac56d7ad7a88c45db87448818c89b428a23d968f09143b7d1b09f54860e56a433a739c2717be6dce0f