Analysis

  • max time kernel
    296s
  • max time network
    244s
  • platform
    windows10-1703_x64
  • resource
    win10-20240221-en
  • resource tags

    arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system
  • submitted
    08-03-2024 05:03

General

  • Target

    c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2.exe

  • Size

    697KB

  • MD5

    18fd5678b1fb5891874c9608c1640c95

  • SHA1

    6d2ff7934cb4ee5c749ad752571855f1a1eca56c

  • SHA256

    c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2

  • SHA512

    5216acd276dfcebcd5bcfd3fb31be732d6aa5b46459390025342e9746d548d099362032e9521c30520a6b137329ece0f3f61f06a768cbe9f37c2b6122b958c1f

  • SSDEEP

    12288:aMANKdVb0cBY2zaqKrgyWvfLsVwVuDMyOdbUF1oXppYN4KBr40utQ8N:XAt2zaqugy4cMyOdbUnw7VKBP8

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .wisz

  • offline_id

    4p0Nzrg1q0ND5of5Gtp2UBjthSXuE8VxnMrd4vt1

  • payload_url

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

    http://sajdfue.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/a832401adcd58098c699f768ffea4f1720240305114308/7e601a 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: 0853PsawqS

rsa_pubkey.plain

Extracted

Family

vidar

Version

8.1

Botnet

e2da5861d01d391b927839bbec00e666

C2

https://steamcommunity.com/profiles/76561199649267298

https://t.me/uprizin

Attributes
  • profile_id_v2

    e2da5861d01d391b927839bbec00e666

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36 OPR/96.0.0.0

Signatures

  • Detect Vidar Stealer 5 IoCs
  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 13 IoCs
  • 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.

  • Suspicious use of SetThreadContext 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2.exe
    "C:\Users\Admin\AppData\Local\Temp\c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1172
    • C:\Users\Admin\AppData\Local\Temp\c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2.exe
      "C:\Users\Admin\AppData\Local\Temp\c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3364
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\55f968e4-c333-43fb-b565-ecb7f2c144a8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:236
      • C:\Users\Admin\AppData\Local\Temp\c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2.exe
        "C:\Users\Admin\AppData\Local\Temp\c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1192
        • C:\Users\Admin\AppData\Local\Temp\c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2.exe
          "C:\Users\Admin\AppData\Local\Temp\c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:652
          • C:\Users\Admin\AppData\Local\437d73b6-e625-43e4-b4a4-1f8a0a7a3798\build2.exe
            "C:\Users\Admin\AppData\Local\437d73b6-e625-43e4-b4a4-1f8a0a7a3798\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:32
            • C:\Users\Admin\AppData\Local\437d73b6-e625-43e4-b4a4-1f8a0a7a3798\build2.exe
              "C:\Users\Admin\AppData\Local\437d73b6-e625-43e4-b4a4-1f8a0a7a3798\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:372
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 372 -s 1872
                7⤵
                • Program crash
                PID:4048
          • C:\Users\Admin\AppData\Local\437d73b6-e625-43e4-b4a4-1f8a0a7a3798\build3.exe
            "C:\Users\Admin\AppData\Local\437d73b6-e625-43e4-b4a4-1f8a0a7a3798\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4644
            • C:\Users\Admin\AppData\Local\437d73b6-e625-43e4-b4a4-1f8a0a7a3798\build3.exe
              "C:\Users\Admin\AppData\Local\437d73b6-e625-43e4-b4a4-1f8a0a7a3798\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:2124
              • C:\Windows\SysWOW64\schtasks.exe
                /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
                7⤵
                • Creates scheduled task(s)
                PID:4652
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3372
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1140
      • C:\Windows\SysWOW64\schtasks.exe
        /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
        3⤵
        • Creates scheduled task(s)
        PID:4828
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    PID:4868
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4888
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    PID:4564
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:3624
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    PID:4068
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4308
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    PID:2836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    1KB

    MD5

    a757a2a5fb2249733650563a36836fc7

    SHA1

    0e3f0f05d3fb61398e507bcde88a32ec5a88b4a8

    SHA256

    5b75679110beb7d514c1f6c7b993cd540dd29856da2e2e995bafb70e77d2bf4b

    SHA512

    8ed6aa61e91d640f2a8983fa67d937b2abcc5f5c43375a739773b991414094121efc4a049436dd39e45d8e627e57779f1c89352a606dffa406382d875de46b97

  • 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

    f358796f2039bfb09fbe9e57f92c904d

    SHA1

    56b78b69900ab654ace205b2063789be086c7adf

    SHA256

    3e0dfacff8aaf1aa30029ae562d0ee8d639c19923121c383b60065618c342539

    SHA512

    9f3c6a6eb002148ba3a7a87d9e81d9c83b3fc3c0e0172e625212b4f75f599ef0223bea9872e6c5c22d814fc284c6e39cf5eeb1fd2b676108830752ac8dbdfc7f

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

    Filesize

    392B

    MD5

    22288d60f602d28474906f1ae3155833

    SHA1

    831c08bc082a33fa049e1b48873caecfa824633a

    SHA256

    64c537b2eb79e2b93e9f091aa66ea4ed4a21d0ec4a30b2e580c6aa5096110a25

    SHA512

    a7158f16c24727e48e61671e680363d11b1269826083c9ec101559d90bf9be8674e0c81706fc60d4903442f3c35dc433dd6fc58ff663b46aaf0285410c067e49

  • C:\Users\Admin\AppData\Local\437d73b6-e625-43e4-b4a4-1f8a0a7a3798\build2.exe

    Filesize

    219KB

    MD5

    d37b17fc3b9162060a60cd9c9f5f7e2c

    SHA1

    5bcd761db5662cebdb06f372d8cb731a9b98d1c5

    SHA256

    36826a94f7aabd1f0d71abc6850e64a499768bd30cab361e8724d546e495e35f

    SHA512

    04b0fcc597afba17b8be46eacee58c7e8d38c7efa9247ab5b3cbf1ae3ed8dc2e6e909b7dab28b2a41f08fb37e950abb6ca97553adf0e20335c6864d942bef6ea

  • C:\Users\Admin\AppData\Local\437d73b6-e625-43e4-b4a4-1f8a0a7a3798\build3.exe

    Filesize

    299KB

    MD5

    41b883a061c95e9b9cb17d4ca50de770

    SHA1

    1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

    SHA256

    fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

    SHA512

    cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

  • C:\Users\Admin\AppData\Local\55f968e4-c333-43fb-b565-ecb7f2c144a8\c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2.exe

    Filesize

    697KB

    MD5

    18fd5678b1fb5891874c9608c1640c95

    SHA1

    6d2ff7934cb4ee5c749ad752571855f1a1eca56c

    SHA256

    c20c9317800a54d6d790f80fe684b3b6cf5ec8832b16ecf71db998a2b86ecef2

    SHA512

    5216acd276dfcebcd5bcfd3fb31be732d6aa5b46459390025342e9746d548d099362032e9521c30520a6b137329ece0f3f61f06a768cbe9f37c2b6122b958c1f

  • memory/32-56-0x00000000021C0000-0x00000000022C0000-memory.dmp

    Filesize

    1024KB

  • memory/32-59-0x0000000002170000-0x00000000021A2000-memory.dmp

    Filesize

    200KB

  • memory/372-55-0x0000000000400000-0x0000000000645000-memory.dmp

    Filesize

    2.3MB

  • memory/372-60-0x0000000000400000-0x0000000000645000-memory.dmp

    Filesize

    2.3MB

  • memory/372-61-0x0000000000400000-0x0000000000645000-memory.dmp

    Filesize

    2.3MB

  • memory/372-66-0x0000000000400000-0x0000000000645000-memory.dmp

    Filesize

    2.3MB

  • memory/652-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/652-45-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/652-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/652-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/652-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/652-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/652-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/652-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/652-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/652-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1140-98-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/1172-1-0x0000000003BF0000-0x0000000003C82000-memory.dmp

    Filesize

    584KB

  • memory/1172-2-0x0000000003C90000-0x0000000003DAB000-memory.dmp

    Filesize

    1.1MB

  • memory/1192-20-0x0000000002100000-0x000000000219A000-memory.dmp

    Filesize

    616KB

  • memory/2124-70-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2124-77-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2124-75-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/3364-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3364-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3364-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3364-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3364-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3372-95-0x0000000000889000-0x0000000000899000-memory.dmp

    Filesize

    64KB

  • memory/4068-176-0x00000000009DE000-0x00000000009EE000-memory.dmp

    Filesize

    64KB

  • memory/4564-149-0x00000000009E0000-0x0000000000AE0000-memory.dmp

    Filesize

    1024KB

  • memory/4644-72-0x0000000000920000-0x0000000000924000-memory.dmp

    Filesize

    16KB

  • memory/4644-71-0x0000000000B00000-0x0000000000C00000-memory.dmp

    Filesize

    1024KB

  • memory/4888-125-0x0000000000410000-0x00000000004D5000-memory.dmp

    Filesize

    788KB