Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-04-2023 21:54

General

  • Target

    41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04.exe

  • Size

    695KB

  • MD5

    e717bfff0c15d187a8ca8a0c78ce4291

  • SHA1

    1c17a7fc3e6361d638d453a969d5cbb8f3ca5e5c

  • SHA256

    41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04

  • SHA512

    a4aeb95381cfdb5804a9d55f73c5e6459831973e952287f7f9ecd0ad2de971d6bab5490df7cdba43f3de800ba695cbcd2f82d5a185eaf27ee31f0425afe5c1e1

  • SSDEEP

    12288:Vi3j3bzC7L3HcAlhyqj9BLQTFtrYpCKJqfuoV+bOpHzPbvB5Mv3D8dw:VSLm/XvlH0htrYptQtV+bEPbBGvD8

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .niwm

  • offline_id

    FCP2fiITr4rryFhFBnA59GMgwES5CunmcbPc76t1

  • payload_url

    http://uaery.top/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-v8HcfXTy5x 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: 0681SUjhw

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.2

Botnet

5df88deb5dde677ba658b77ad5f60248

C2

https://steamcommunity.com/profiles/76561199489580435

https://t.me/tabootalks

Attributes
  • profile_id_v2

    5df88deb5dde677ba658b77ad5f60248

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79

Signatures

  • Detected Djvu ransomware 18 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 3 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 1 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). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04.exe
    "C:\Users\Admin\AppData\Local\Temp\41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:464
    • C:\Users\Admin\AppData\Local\Temp\41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04.exe
      "C:\Users\Admin\AppData\Local\Temp\41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4668
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a9e4708f-769c-4cd9-aa86-ab0e021f00dd" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2672
      • C:\Users\Admin\AppData\Local\Temp\41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04.exe
        "C:\Users\Admin\AppData\Local\Temp\41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1316
        • C:\Users\Admin\AppData\Local\Temp\41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04.exe
          "C:\Users\Admin\AppData\Local\Temp\41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2948
          • C:\Users\Admin\AppData\Local\1174b881-d08d-49d4-b98a-5e49bf47c43f\build2.exe
            "C:\Users\Admin\AppData\Local\1174b881-d08d-49d4-b98a-5e49bf47c43f\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2308
            • C:\Users\Admin\AppData\Local\1174b881-d08d-49d4-b98a-5e49bf47c43f\build2.exe
              "C:\Users\Admin\AppData\Local\1174b881-d08d-49d4-b98a-5e49bf47c43f\build2.exe"
              6⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4620
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\1174b881-d08d-49d4-b98a-5e49bf47c43f\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:2972
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4636

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\Local\1174b881-d08d-49d4-b98a-5e49bf47c43f\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\1174b881-d08d-49d4-b98a-5e49bf47c43f\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\1174b881-d08d-49d4-b98a-5e49bf47c43f\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\1174b881-d08d-49d4-b98a-5e49bf47c43f\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\a9e4708f-769c-4cd9-aa86-ab0e021f00dd\41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04.exe
    Filesize

    695KB

    MD5

    e717bfff0c15d187a8ca8a0c78ce4291

    SHA1

    1c17a7fc3e6361d638d453a969d5cbb8f3ca5e5c

    SHA256

    41e4f44b85528e604366ac6cfd88db1376848652c8044724ce8d3e4cc9e0cb04

    SHA512

    a4aeb95381cfdb5804a9d55f73c5e6459831973e952287f7f9ecd0ad2de971d6bab5490df7cdba43f3de800ba695cbcd2f82d5a185eaf27ee31f0425afe5c1e1

  • memory/464-136-0x00000000022E0000-0x00000000023FB000-memory.dmp
    Filesize

    1.1MB

  • memory/2308-168-0x0000000004800000-0x0000000004857000-memory.dmp
    Filesize

    348KB

  • memory/2948-149-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-171-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-153-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-191-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-148-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-147-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-184-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-152-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-182-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-180-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-179-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2948-177-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4620-167-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4620-275-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4620-170-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4620-279-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4620-172-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4620-181-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4620-169-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4620-165-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4620-277-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4620-207-0x0000000061E00000-0x0000000061EF3000-memory.dmp
    Filesize

    972KB

  • memory/4620-276-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4668-143-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4668-135-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4668-137-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4668-134-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4668-138-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB