Analysis

  • max time kernel
    146s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2023, 19:49

General

  • Target

    cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807.exe

  • Size

    771KB

  • MD5

    4e53a6001f99b9f0d996c8c2d78bbf9f

  • SHA1

    53d18bf6b69aa4f16c90d48e42e32426946360fe

  • SHA256

    cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807

  • SHA512

    e67bf0b60e887bf503f348e56bde98e4525471d47a80bbbfb38b2dc7697b59fb75c8d0ee992e6bdfdeca50d1531b419821e9285010c1bb3cc948784dac5fec92

  • SSDEEP

    12288:tefT5gbrfwNEVMFefu4FwfMCGFYlQK50BxE83RWWr/y1h:tedgbrfPMe2mwEzdBxE83F/yh

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 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\cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807.exe
    "C:\Users\Admin\AppData\Local\Temp\cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:904
    • C:\Users\Admin\AppData\Local\Temp\cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807.exe
      "C:\Users\Admin\AppData\Local\Temp\cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4456
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\2cfdecff-f54a-4cad-8c67-51a389fcf698" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2912
      • C:\Users\Admin\AppData\Local\Temp\cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807.exe
        "C:\Users\Admin\AppData\Local\Temp\cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:464
        • C:\Users\Admin\AppData\Local\Temp\cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807.exe
          "C:\Users\Admin\AppData\Local\Temp\cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1668
          • C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build2.exe
            "C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4052
            • C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build2.exe
              "C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:1544
          • C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build3.exe
            "C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:5016
            • 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:4408
  • 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:1776
    • 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:2224

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\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

          Filesize

          2KB

          MD5

          19ec34e21b6599001a31b2e9bff41133

          SHA1

          bc42d5ea1d4d08094dcbd701638383e270489e95

          SHA256

          9205a9a03f1118c26edbd69891678888ec92fff13cb861b9e5eb5041e993e3bb

          SHA512

          0c994ed72e4bfc2c6cdda6f05d198e8431d5f2780a75a50ff5c2c04be7436c1aec2134efd639d79e6ebf0bbb32696d2525cd8bb6f88abbc90e8f211057a6ca84

        • 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

          e1d177faad0ffd37811e659d22074546

          SHA1

          042838bb7f2a623bab8ed7357f37abdb82167f8a

          SHA256

          e01a710a229df3c98f3545d2390e48e497915d06052a675c74cb887a566a6439

          SHA512

          6763b815c77e4eb97452f64e29c5c9e21b62e025ead9847a0748929d35766ce452b73c3b1a8d6543441edcfa327d7bd7d50c3ecc02f33805930868a3036b8fdd

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

          Filesize

          482B

          MD5

          32ea154e20656d41297b0df53bf0a56f

          SHA1

          465f5cba0a0fd2f22b12baa58414063973cd90f3

          SHA256

          7ddc3cf037348196120be37965e075dd88b1b5c78688c7534ed7d738d106e1e3

          SHA512

          8ae5bd7e4fb86f86932f426a4100216b960555649dcd90a4b743d3844b29fbd2e6c96be464d46b3821c88d20e0ef7d5045c1cf4c96e045c65b71c6b888701528

        • C:\Users\Admin\AppData\Local\2cfdecff-f54a-4cad-8c67-51a389fcf698\cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807.exe

          Filesize

          771KB

          MD5

          4e53a6001f99b9f0d996c8c2d78bbf9f

          SHA1

          53d18bf6b69aa4f16c90d48e42e32426946360fe

          SHA256

          cc5ae3593e2941e28fd7ada424a0e838a9ceb1f85f031641e4eae9dead0c9807

          SHA512

          e67bf0b60e887bf503f348e56bde98e4525471d47a80bbbfb38b2dc7697b59fb75c8d0ee992e6bdfdeca50d1531b419821e9285010c1bb3cc948784dac5fec92

        • C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\4c97f9b4-9c6e-452f-98c9-a79b698ac774\build3.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

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

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • memory/904-137-0x0000000004C60000-0x0000000004D7B000-memory.dmp

          Filesize

          1.1MB

        • memory/1544-191-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/1544-185-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/1544-278-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/1544-279-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/1544-208-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/1544-181-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/1544-276-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/1544-184-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/1668-153-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-166-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-159-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-158-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-151-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-205-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-163-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-281-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-165-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4052-183-0x0000000002330000-0x0000000002386000-memory.dmp

          Filesize

          344KB

        • memory/4456-135-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4456-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4456-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4456-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4456-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB