Analysis

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

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-06-2023 07:05

General

  • Target

    01226899.exe

  • Size

    785KB

  • MD5

    9983118a63a5839e2dc47a34a9b1f7cc

  • SHA1

    7c2d5588031ff180943034a71fcf416e851ac498

  • SHA256

    7fe21ce736d4d901791399487efc9db00a2e75ec7e6d59bf9c74a0e26bf3e0c1

  • SHA512

    88665c909a15b7e857cf6e390901347879dd5bf1dfdb2a9a663cc4e543561354501e0b794d83eaa60b5401ea552391acbb671bb2af46c46413ed3a666f67dc32

  • SSDEEP

    12288:Uv/o3GdCcCQ7GFBQjInOUpqynH/TQSm8o7J05dnqOx9vQ7vbjHB8zTLy:UvuGdC3j7ZOYfzuW5dq02hwTLy

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .nerz

  • offline_id

    0vTA6MA1m5nzrdffOCJC7YmAa4Lp6YNN8lOJ4mt1

  • 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-vc50LyB2yb 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: support@freshmail.top Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0722JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

4.2

Botnet

a81bcf59d85e6e13257840e65b9d1da8

C2

https://steamcommunity.com/profiles/76561199511129510

https://t.me/rechnungsbetrag

Attributes
  • profile_id_v2

    a81bcf59d85e6e13257840e65b9d1da8

  • user_agent

    Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.38 Safari/537.36 Brave/75

Signatures

  • 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
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 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 3 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).

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\01226899.exe
    "C:\Users\Admin\AppData\Local\Temp\01226899.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3324
    • C:\Users\Admin\AppData\Local\Temp\01226899.exe
      "C:\Users\Admin\AppData\Local\Temp\01226899.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5008
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\58ac698a-4d73-4d0a-95af-1693e4a61ed0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4168
      • C:\Users\Admin\AppData\Local\Temp\01226899.exe
        "C:\Users\Admin\AppData\Local\Temp\01226899.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3644
        • C:\Users\Admin\AppData\Local\Temp\01226899.exe
          "C:\Users\Admin\AppData\Local\Temp\01226899.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:644
          • C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe
            "C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2780
            • C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe
              "C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:364

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

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\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
    Filesize

    2KB

    MD5

    5563e2e864598039e55b26e807237d0d

    SHA1

    203a6b56231d9be8a0af47bd1f98d25cc2a1f429

    SHA256

    21b8e73c4e89932cf644d426fa9590da164b18cf4153e66a6edcd964eedeeccb

    SHA512

    b9b67d586f905ffb28974a5d33a6b7dc81a6aed325a57918f642c6447a3b92a05fdd72b49f73db27b636975f281e08c912b08852e2468c92daa8693cfa310b51

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
    Filesize

    1KB

    MD5

    c2be8a28b3ea966e6f0b0ecbaa5d33cc

    SHA1

    a7a83c7ef21198921c91e89cccb1a611c735c238

    SHA256

    56cfb5817c093d5b34263f510c48bdf9268916e2df27b7e133bcdc5132b9efa2

    SHA512

    45c2e2f1b6a6166cccfac070a73e64f53c103d3c37c8e4154c08a98d3251a70f3253f036c2a14e734dd532870d3e34795b0181a8a248fd3bdfcf0b3475fe610c

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
    Filesize

    488B

    MD5

    d21248d33899fa3dc43a92341a9e47ce

    SHA1

    78cdc8a86cf54da7c9f22e5a5bc9b5440f3f24d2

    SHA256

    8e6505fdd9e54223dc45c3936be4dcac5ee59269df1faf534a60e982c4b5fc37

    SHA512

    db25f315bbba5c83e0159e72ab0ad6cdbd1eb7bfef8eb0b69ce60341b6c5506d0e86d192ed4144b9830f808d4472d137e9afd568affaaf2b51e5d956002deadd

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
    Filesize

    482B

    MD5

    f731406218d551d5ef7c9ec11d5800fd

    SHA1

    85a481e4f1a1076139c294a16a695766fecc8e62

    SHA256

    8c1ad672f3c436ab48d91b47e3b299743be8313f5c2c79c6f22e4b1238750ccc

    SHA512

    abcf8368b0ac49fac84749625493096948359240ff56a77bf1e00e5a16b12123f51576f735abe7a67624dc796d1a4335b288ba7fbe985ca2f74d7147997eb7f6

  • C:\Users\Admin\AppData\Local\58ac698a-4d73-4d0a-95af-1693e4a61ed0\01226899.exe
    Filesize

    785KB

    MD5

    9983118a63a5839e2dc47a34a9b1f7cc

    SHA1

    7c2d5588031ff180943034a71fcf416e851ac498

    SHA256

    7fe21ce736d4d901791399487efc9db00a2e75ec7e6d59bf9c74a0e26bf3e0c1

    SHA512

    88665c909a15b7e857cf6e390901347879dd5bf1dfdb2a9a663cc4e543561354501e0b794d83eaa60b5401ea552391acbb671bb2af46c46413ed3a666f67dc32

  • C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe
    Filesize

    352KB

    MD5

    f76b7a03bc4db7e669adc6a0eb80322a

    SHA1

    ad3ef2ea2dcf95e805c7be56a7d63f654328121e

    SHA256

    c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d

    SHA512

    626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c

  • C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe
    Filesize

    352KB

    MD5

    f76b7a03bc4db7e669adc6a0eb80322a

    SHA1

    ad3ef2ea2dcf95e805c7be56a7d63f654328121e

    SHA256

    c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d

    SHA512

    626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c

  • C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe
    Filesize

    352KB

    MD5

    f76b7a03bc4db7e669adc6a0eb80322a

    SHA1

    ad3ef2ea2dcf95e805c7be56a7d63f654328121e

    SHA256

    c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d

    SHA512

    626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c

  • C:\Users\Admin\AppData\Local\f38159f9-696d-431b-b72a-e737f554df24\build2.exe
    Filesize

    352KB

    MD5

    f76b7a03bc4db7e669adc6a0eb80322a

    SHA1

    ad3ef2ea2dcf95e805c7be56a7d63f654328121e

    SHA256

    c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d

    SHA512

    626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c

  • memory/364-254-0x0000000000400000-0x000000000046A000-memory.dmp
    Filesize

    424KB

  • memory/364-175-0x0000000000400000-0x000000000046A000-memory.dmp
    Filesize

    424KB

  • memory/364-176-0x0000000000400000-0x000000000046A000-memory.dmp
    Filesize

    424KB

  • memory/364-173-0x0000000000400000-0x000000000046A000-memory.dmp
    Filesize

    424KB

  • memory/364-186-0x0000000061E00000-0x0000000061EF3000-memory.dmp
    Filesize

    972KB

  • memory/364-171-0x0000000000400000-0x000000000046A000-memory.dmp
    Filesize

    424KB

  • memory/364-256-0x0000000000400000-0x000000000046A000-memory.dmp
    Filesize

    424KB

  • memory/364-257-0x0000000000400000-0x000000000046A000-memory.dmp
    Filesize

    424KB

  • memory/644-157-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/644-271-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/644-276-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/644-158-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/644-275-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/644-274-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/644-273-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/644-159-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/644-262-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/644-152-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/644-151-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2780-174-0x0000000004900000-0x0000000004956000-memory.dmp
    Filesize

    344KB

  • memory/3324-136-0x00000000022A0000-0x00000000023BB000-memory.dmp
    Filesize

    1.1MB

  • memory/5008-147-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/5008-135-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/5008-134-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/5008-145-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/5008-137-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB