Analysis

  • max time kernel
    144s
  • max time network
    126s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    02-06-2023 17:58

General

  • Target

    bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44.exe

  • Size

    758KB

  • MD5

    d43ea1795b1baf72f0d572b0728fc982

  • SHA1

    ab8e5f4b34f3ade45d9b677f706db243ee721add

  • SHA256

    bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44

  • SHA512

    cf2e4c30063919d2a191cf5475d6781699d99cc067e647fdf807a53da4d873c446c201a68656106dd3a223baae8de0ad1cee1a4d74d2f3afe7ea994bff2f52d4

  • SSDEEP

    12288:UJEpYSTGaRBX1FoOX1/uwBpoE8CaaRDyWuYK9+g9I3AJpgEdRD3SiqQmOWB:UJEhTtD1FBkw/uaRDNBc+WI3AJpfRl7

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
  • 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
  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44.exe
    "C:\Users\Admin\AppData\Local\Temp\bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2132
    • C:\Users\Admin\AppData\Local\Temp\bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44.exe
      "C:\Users\Admin\AppData\Local\Temp\bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2336
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ad2ab031-61fe-4a65-aebb-7ff8df8898ef" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3128
      • C:\Users\Admin\AppData\Local\Temp\bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44.exe
        "C:\Users\Admin\AppData\Local\Temp\bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:5068
        • C:\Users\Admin\AppData\Local\Temp\bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44.exe
          "C:\Users\Admin\AppData\Local\Temp\bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2612
          • C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build2.exe
            "C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2796
            • C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build2.exe
              "C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:3624
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4908
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4300
          • C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build3.exe
            "C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4708
            • 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:4572
  • 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:4264
    • 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:2836

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • 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

    9712d3a996639161c9d3f806b461189f

    SHA1

    6acd055617e97583d2d86ac62445da88a5b74b0b

    SHA256

    369f6dd60ab83b6703ee64d245d3ec5719d82e3f0a2d7f5fd9d66e05cdd558b6

    SHA512

    40e9c8418593e2b90af09ace49173a67bc7083c84a18d4b009202edda3d3d98ce2efaa6ee6ff38b6cf6edd312a4694c703ff78bc7d5b4dd54db935680cdea4ab

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

    Filesize

    482B

    MD5

    ac77d89fda56369eb94e96ce07f4f36b

    SHA1

    246a4e87d1e06b5911c41e8bc69320e3fe5c69a8

    SHA256

    a1aeb6959c940e1b3ed214eaf6f54dac59c06b31660b00f865f3d7734c1ad3ff

    SHA512

    e9749613b3c4e55af3fd8a82644cf81d015d5097173321e5d536deee8749bf1dfaf304881925efc52ae6459b2b2ef156faa7111a60ffe453f834a007328be4e0

  • C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build2.exe

    Filesize

    437KB

    MD5

    04197441a29753c237bc0c285082c0d8

    SHA1

    463462810a45452d6e91364ae7858263437648dd

    SHA256

    692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

    SHA512

    91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

  • C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build2.exe

    Filesize

    437KB

    MD5

    04197441a29753c237bc0c285082c0d8

    SHA1

    463462810a45452d6e91364ae7858263437648dd

    SHA256

    692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

    SHA512

    91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

  • C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build2.exe

    Filesize

    437KB

    MD5

    04197441a29753c237bc0c285082c0d8

    SHA1

    463462810a45452d6e91364ae7858263437648dd

    SHA256

    692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

    SHA512

    91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

  • C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\6d2161ed-0ace-4e64-8d5d-ffd5be1d62ce\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\ad2ab031-61fe-4a65-aebb-7ff8df8898ef\bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44.exe

    Filesize

    758KB

    MD5

    d43ea1795b1baf72f0d572b0728fc982

    SHA1

    ab8e5f4b34f3ade45d9b677f706db243ee721add

    SHA256

    bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44

    SHA512

    cf2e4c30063919d2a191cf5475d6781699d99cc067e647fdf807a53da4d873c446c201a68656106dd3a223baae8de0ad1cee1a4d74d2f3afe7ea994bff2f52d4

  • 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

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

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/2132-124-0x0000000004BD0000-0x0000000004CEB000-memory.dmp

    Filesize

    1.1MB

  • memory/2336-126-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2336-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2336-125-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2336-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2336-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2612-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2612-148-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2612-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2612-156-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2612-155-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2612-141-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2612-171-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2612-188-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2612-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2612-153-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2796-169-0x0000000000930000-0x0000000000986000-memory.dmp

    Filesize

    344KB

  • memory/3624-191-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/3624-170-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/3624-168-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/3624-229-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/3624-230-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/3624-231-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/3624-167-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/3624-165-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB