Analysis

  • max time kernel
    144s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-06-2023 00:57

General

  • Target

    file.exe

  • Size

    779KB

  • MD5

    2c672083cd017a7b9d144cc4d7023be9

  • SHA1

    c919b7257efc8b55066c69abf22ba1176d8fa94c

  • SHA256

    e2d46d2b425da9d93663333937e8c28c5464a4daaf3e6c59ca0bbcf4478160ce

  • SHA512

    98dbed105d1043b2605839f0e3840b82cf34823d931b3adae9853b76614f9ebc839e760cc19aa31029dc7605a64bb2b8d15cc6e82b4a87ccc180d185811800e1

  • SSDEEP

    24576:dZIrvnjQEMFjPelfkXsl4YHOZGgOnblTv:dZIrf0EMMl8clNOZGgOnB

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: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0722JOsie

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 15 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 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.

  • 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1772
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2844
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\0c7ce4fe-a806-43a6-9afd-dc7a34b03b34" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4008
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4608
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1108
          • C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe
            "C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3668
            • C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe
              "C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:4084
          • C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build3.exe
            "C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3328
            • 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:2268
  • 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:3860
    • 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:4800

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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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

    72cce08db064d193dd1c8db96e30a0e7

    SHA1

    a76ef6bbfb2cadde26e7d713e9a71a8818d68991

    SHA256

    e904584bfbd2b92b1b9063f660abbe337c58e623ca78df5107f036d272d66c38

    SHA512

    e1d719a6a5d446c2b3348930cfcea61f85cff76adc38948dfb144aa7f95eac5453d7787706bca70ce75de931724cff7e6e146f9b662e34eb36d948995fbca1f4

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

    Filesize

    1KB

    MD5

    64f0d4d6d9cc00bf4f809cd784078196

    SHA1

    0526f2645201510649d253f2d07194de430cab0d

    SHA256

    8b379783bfca35e7cb6828accb1dc18fc022dc8b4159ced8534b95943bf41457

    SHA512

    773f2b5f876f56237ef7ed2f5c7a558c3b46514b23a1ddf7028c4a796745c78738cff869016e6d616fec7df66a0d54e9e3f1c6bcaa8888b5b68d30cdb91fda17

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

    Filesize

    488B

    MD5

    81080ffa797ad31f0d6f23a4febcf213

    SHA1

    c7dcb34a26482ac9c75958ce31b0acbbe0c6d4a7

    SHA256

    273ef2fc0c455465e88adc4af77673c3e416fd92e479e9a6e5cf3b21a8097978

    SHA512

    de64ba6e9ead07fee87e5a5d33858bdd7c96068903100b95a9a8e8f141df865d431377a50696af9288a5fb780729ff42c834b25f7bc7ceff05f77fdea42d578e

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

    Filesize

    482B

    MD5

    6f3443be8822b518e38886803d766ebd

    SHA1

    785683b94c75173fb14e8110592b5bddd5413d5d

    SHA256

    4d4c2fefdbdcd770b3b9b5d7fb655006a5e23d3882f58dc2c565c18a542c228b

    SHA512

    923b0772b4052889b4752150601da7dd8cab33b194f45fd6fc8c8e9c1db926fdde8aca887754ac0ad836bbdca7460402d7b26265cdca2bb440884b547695ac5d

  • C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe

    Filesize

    437KB

    MD5

    04197441a29753c237bc0c285082c0d8

    SHA1

    463462810a45452d6e91364ae7858263437648dd

    SHA256

    692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

    SHA512

    91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

  • C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe

    Filesize

    437KB

    MD5

    04197441a29753c237bc0c285082c0d8

    SHA1

    463462810a45452d6e91364ae7858263437648dd

    SHA256

    692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

    SHA512

    91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

  • C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe

    Filesize

    437KB

    MD5

    04197441a29753c237bc0c285082c0d8

    SHA1

    463462810a45452d6e91364ae7858263437648dd

    SHA256

    692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

    SHA512

    91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

  • C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe

    Filesize

    437KB

    MD5

    04197441a29753c237bc0c285082c0d8

    SHA1

    463462810a45452d6e91364ae7858263437648dd

    SHA256

    692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

    SHA512

    91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

  • C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\0c7ce4fe-a806-43a6-9afd-dc7a34b03b34\file.exe

    Filesize

    779KB

    MD5

    2c672083cd017a7b9d144cc4d7023be9

    SHA1

    c919b7257efc8b55066c69abf22ba1176d8fa94c

    SHA256

    e2d46d2b425da9d93663333937e8c28c5464a4daaf3e6c59ca0bbcf4478160ce

    SHA512

    98dbed105d1043b2605839f0e3840b82cf34823d931b3adae9853b76614f9ebc839e760cc19aa31029dc7605a64bb2b8d15cc6e82b4a87ccc180d185811800e1

  • 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/1108-168-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1108-169-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1108-281-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1108-204-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1108-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1108-163-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1108-159-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1108-157-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1108-151-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1772-134-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

    Filesize

    1.1MB

  • memory/2844-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2844-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2844-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2844-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2844-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3668-184-0x0000000002360000-0x00000000023B6000-memory.dmp

    Filesize

    344KB

  • memory/4084-183-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4084-181-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4084-276-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4084-278-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4084-279-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4084-208-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/4084-186-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4084-185-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB