Analysis

  • max time kernel
    145s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2023, 05:13

General

  • Target

    5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f.exe

  • Size

    773KB

  • MD5

    a5e63e4246134311fa8cec5175140984

  • SHA1

    e0af7300a5cd6cbb9babb4443ee7042c25d7e748

  • SHA256

    5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f

  • SHA512

    b8792fe262096f249dec3eca7c6b861b4258d6fc3fd3f96a5c1263c07f4942a3ebbeaee0601868a0f4cad04bb6629fce575e85600cd54541e0baf5878a2a004f

  • SSDEEP

    12288:vJNdycHSaXILFXSy8g1nDpnWmgHwEbmsSTjy6bfn9MmqIZDTDGwf:vJNQESXLoy8gdlh5yCfnMgXD7

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .werz

  • offline_id

    D4KWjM5DY4jRN5T36xETsvDrARq2cCeStxvviHt1

  • payload_url

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

    http://zexeq.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. You can get and look video overview decrypt tool: https://we.tl/t-3q8YguI9qh Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0718JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

4.1

Botnet

77a63e71a10ee1d81a28b5c866b75922

C2

https://steamcommunity.com/profiles/76561199510444991

https://t.me/task4manager

Attributes
  • profile_id_v2

    77a63e71a10ee1d81a28b5c866b75922

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.34

Signatures

  • Detected Djvu ransomware 16 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
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

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

  • 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 6 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f.exe
    "C:\Users\Admin\AppData\Local\Temp\5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2136
    • C:\Users\Admin\AppData\Local\Temp\5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f.exe
      "C:\Users\Admin\AppData\Local\Temp\5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5004
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\fc427200-e866-424c-963e-3fa7897f27f7" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4992
      • C:\Users\Admin\AppData\Local\Temp\5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f.exe
        "C:\Users\Admin\AppData\Local\Temp\5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1588
        • C:\Users\Admin\AppData\Local\Temp\5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f.exe
          "C:\Users\Admin\AppData\Local\Temp\5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1720
          • C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build2.exe
            "C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3640
            • C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build2.exe
              "C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:3712
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3712 -s 1844
                7⤵
                • Program crash
                PID:3276
          • C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build3.exe
            "C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2888
            • 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"
              6⤵
              • Creates scheduled task(s)
              PID:2848
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3712 -ip 3712
    1⤵
      PID:4112
    • 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 WriteProcessMemory
      PID:4948
      • 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"
        2⤵
        • Creates scheduled task(s)
        PID:4956

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\mozglue.dll

      Filesize

      593KB

      MD5

      c8fd9be83bc728cc04beffafc2907fe9

      SHA1

      95ab9f701e0024cedfbd312bcfe4e726744c4f2e

      SHA256

      ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

      SHA512

      fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

    • C:\ProgramData\nss3.dll

      Filesize

      2.0MB

      MD5

      1cc453cdf74f31e4d913ff9c10acdde2

      SHA1

      6e85eae544d6e965f15fa5c39700fa7202f3aafe

      SHA256

      ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

      SHA512

      dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

    • C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build2.exe

      Filesize

      437KB

      MD5

      04197441a29753c237bc0c285082c0d8

      SHA1

      463462810a45452d6e91364ae7858263437648dd

      SHA256

      692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

      SHA512

      91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

    • C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build2.exe

      Filesize

      437KB

      MD5

      04197441a29753c237bc0c285082c0d8

      SHA1

      463462810a45452d6e91364ae7858263437648dd

      SHA256

      692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

      SHA512

      91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

    • C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build2.exe

      Filesize

      437KB

      MD5

      04197441a29753c237bc0c285082c0d8

      SHA1

      463462810a45452d6e91364ae7858263437648dd

      SHA256

      692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

      SHA512

      91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

    • C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build2.exe

      Filesize

      437KB

      MD5

      04197441a29753c237bc0c285082c0d8

      SHA1

      463462810a45452d6e91364ae7858263437648dd

      SHA256

      692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

      SHA512

      91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

    • C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\8c926e51-48b9-48d9-bc46-a486851ff8a8\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\fc427200-e866-424c-963e-3fa7897f27f7\5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f.exe

      Filesize

      773KB

      MD5

      a5e63e4246134311fa8cec5175140984

      SHA1

      e0af7300a5cd6cbb9babb4443ee7042c25d7e748

      SHA256

      5534481735d6672b9046d9d85074755c3e7ccd28e6e4d2b2fefa07c86d6ed88f

      SHA512

      b8792fe262096f249dec3eca7c6b861b4258d6fc3fd3f96a5c1263c07f4942a3ebbeaee0601868a0f4cad04bb6629fce575e85600cd54541e0baf5878a2a004f

    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • memory/1720-157-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1720-163-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1720-164-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1720-161-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1720-203-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1720-156-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1720-277-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1720-147-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1720-149-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1720-148-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2136-136-0x0000000002650000-0x000000000276B000-memory.dmp

      Filesize

      1.1MB

    • memory/3640-182-0x0000000002340000-0x0000000002396000-memory.dmp

      Filesize

      344KB

    • memory/3712-181-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/3712-186-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/3712-183-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/3712-206-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/3712-275-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/3712-179-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/5004-134-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5004-135-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5004-137-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5004-138-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5004-143-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB