Analysis

  • max time kernel
    146s
  • 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
    29/05/2023, 18:27

General

  • Target

    a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec.exe

  • Size

    835KB

  • MD5

    9e6bf5a85bd29c8ae53f7ce34ddc0e6d

  • SHA1

    ce1882efabaad21578903c57a398b640c753ee10

  • SHA256

    a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec

  • SHA512

    ec3c441c9999d13f33c1ab0bd629c171b6752e1670dfa7a933eb684e81815c317676bb2441ff618167f0aa07daed7a64d661bc83475dfa31e9fd8d933628dd39

  • SSDEEP

    24576:wK9a6g1hGgEQOZjNjtQCAUuJR0Qwa4bl:wKzQNObjtPANRKb

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\a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec.exe
    "C:\Users\Admin\AppData\Local\Temp\a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1076
    • C:\Users\Admin\AppData\Local\Temp\a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec.exe
      "C:\Users\Admin\AppData\Local\Temp\a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4756
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a29129b7-5199-4634-83d4-5615c6e97cdc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2652
      • C:\Users\Admin\AppData\Local\Temp\a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec.exe
        "C:\Users\Admin\AppData\Local\Temp\a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2616
        • C:\Users\Admin\AppData\Local\Temp\a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec.exe
          "C:\Users\Admin\AppData\Local\Temp\a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3392
          • C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build2.exe
            "C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2952
            • C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build2.exe
              "C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:3944
          • C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build3.exe
            "C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1996
  • 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"
    1⤵
    • Creates scheduled task(s)
    PID:4024
  • 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:3404
    • 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:4252

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

          f66e484f76180fb19546aa9d57accba2

          SHA1

          0ced1b9c30ea054dd83b49f1edfef55f5b5183c0

          SHA256

          f9cdbac7b0628e7d44d159e621c03709ed0d0e1ee5555215f1b6a15c1571d940

          SHA512

          fa38f3d270492548fda297e496bfd79c4bf0a67f73dc712def24a495999c7923add1ad55fbb34925d9535e679d78491f35ffc794ea7fd1d88ff8529b739dbe33

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

          Filesize

          1KB

          MD5

          0de5553e9827815659002db71daadba3

          SHA1

          073c647323b236fec254bc8761ebc838bb636486

          SHA256

          e7ee0d4fb41f5f483e55f53e97817ccb66bc54031b658094ef4b1b1ef9bd00ad

          SHA512

          6de850f9a1f2dbdb77da273b651617639d3e33ad1653bc3464ef695b1bae4e6c16e0fc3891016c40b854981ba0b3005c3cf32406d410900b39fb4c565a8109da

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

          Filesize

          488B

          MD5

          e29203552cec300fa2677d5341d1ae8d

          SHA1

          ae194b49b4c839e129ed35219fb409ad0c5b368e

          SHA256

          cc0276cccba7998b145928676d53bb91a63ea45462484e6062c2f8a9854d3827

          SHA512

          833f0046a05720a4804e08fa01297fe3c2aba4f4085341af14dc56a8e19f770bf3da5b4ec3427667e6ced3c3afe2070c3af75d87a4551c8ae701a667dd6073c3

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

          Filesize

          482B

          MD5

          59fdc724a286d746dbca8a1161f52afd

          SHA1

          07a188867788dc1a3c6ef5cc807f071fb11be326

          SHA256

          5dc99d42299f7a92844e5b3843e71de75935a05acad7bab18009662f5f2a7dbc

          SHA512

          70afc69c02da2e5074656b670cfdb753209655d0e3f220a46651f67b09dec5ce56cb1992a3a567a1b67763c69653bb3d9a16b8b6755ffdc77aa94edbb5d4949f

        • C:\Users\Admin\AppData\Local\a29129b7-5199-4634-83d4-5615c6e97cdc\a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec.exe

          Filesize

          835KB

          MD5

          9e6bf5a85bd29c8ae53f7ce34ddc0e6d

          SHA1

          ce1882efabaad21578903c57a398b640c753ee10

          SHA256

          a279950beb36e5aa9afb76992d708c95a6086ca5e378489cd4d1a998a2ffc5ec

          SHA512

          ec3c441c9999d13f33c1ab0bd629c171b6752e1670dfa7a933eb684e81815c317676bb2441ff618167f0aa07daed7a64d661bc83475dfa31e9fd8d933628dd39

        • C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\fd9160c6-7a94-491f-bcba-d7c4dfafc7c3\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/1076-136-0x0000000002670000-0x000000000278B000-memory.dmp

          Filesize

          1.1MB

        • memory/2952-184-0x0000000000980000-0x00000000009D6000-memory.dmp

          Filesize

          344KB

        • memory/3392-177-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3392-157-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3392-283-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3392-166-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3392-159-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3392-158-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3392-169-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3392-151-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3392-199-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3392-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3944-183-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3944-186-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3944-185-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3944-181-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3944-208-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/3944-276-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3944-277-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3944-278-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/4756-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4756-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4756-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4756-135-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4756-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB