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Analysis

  • max time kernel
    296s
  • max time network
    255s
  • platform
    windows10-1703_x64
  • resource
    win10-20230703-en
  • resource tags

    arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system
  • submitted
    08/08/2023, 04:02

General

  • Target

    260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33.exe

  • Size

    708KB

  • MD5

    67d7e45c271149ed13f7f5056dedf1f4

  • SHA1

    98ee6a725e8f0e14552587ea604c786b934448ba

  • SHA256

    260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33

  • SHA512

    656612572e6347837229eaaa65536fb22150b688692ead62251f7446b291337612752f773f5240211aaf9122da5e01b10b04ef188c4e87655dd96559f7f28afb

  • SSDEEP

    12288:CauR3D5fVqIxD+rIIWlwJUMDEgqrJwqVPv2UaPVeeIrd2qxq1z5ueT:ytD59qmiD1CbNWVBAmt

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test1/get.php

Attributes
  • extension

    .yyza

  • offline_id

    UcKp2U8xIAuhirf1rVzlXed6KBYXf0O1WXF2njt1

  • 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-xZJtZ8PDb2 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: 0756JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

5

Botnet

183caee054f0a0bfc81780194d9bc7cb

C2

https://t.me/versozaline

https://steamcommunity.com/profiles/76561199532186526

Attributes
  • profile_id_v2

    183caee054f0a0bfc81780194d9bc7cb

  • user_agent

    Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/111.0

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
  • 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).

  • Program crash 1 IoCs
  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33.exe
    "C:\Users\Admin\AppData\Local\Temp\260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3988
    • C:\Users\Admin\AppData\Local\Temp\260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33.exe
      "C:\Users\Admin\AppData\Local\Temp\260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:444
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\d8c6be4e-5c43-40b4-93c6-259fdbe9d031" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3020
      • C:\Users\Admin\AppData\Local\Temp\260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33.exe
        "C:\Users\Admin\AppData\Local\Temp\260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:68
        • C:\Users\Admin\AppData\Local\Temp\260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33.exe
          "C:\Users\Admin\AppData\Local\Temp\260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2760
          • C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build2.exe
            "C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:888
            • C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build2.exe
              "C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              PID:2536
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2536 -s 1804
                7⤵
                • Program crash
                PID:4364
          • C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build3.exe
            "C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:788
            • 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:5016
  • 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:1824
    • 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:5100

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    802b7992b634b8cb8eae916015536e1b

    SHA1

    ddbf0933cf5e0051a3feaf6aa82de9008de71801

    SHA256

    16eded867e96946d4ed35ea0561457893a61ef11da70c3afb1570bd47e86bde3

    SHA512

    14f2fda7c57a8345bfcdc59692394b6c72b2d2a8c860f0f67c44cefbcdbff1e0a39a954fe7ab8b323302549a9ecf6ae7e15ef517a7eec933a56a704277a9828d

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

    Filesize

    1KB

    MD5

    cde3004d458a86374c76b63425fc9b8c

    SHA1

    91ed2720991b113dc6ee6b5705ec24b270e081df

    SHA256

    3851e2bff744375020167c2341984024cb6ee0e3d120685ad3e984125bb11447

    SHA512

    9ee9bd7550fb17ae13920ffd7a803727a35d823132f0fbe216d8bbbb09959cc673221d58e1f1b81909a634effedfb74ef29b3e0278a37590d2550db9b6d5cb5f

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

    Filesize

    488B

    MD5

    0a2397f00b481b1956cd4e31a3510625

    SHA1

    4092d45fb5cf1b9723ce7b815581df9b6cf1fa0f

    SHA256

    9d34b27ecbe8113d25bbbab700d6b815a298ed904d36950a9963f352632c3db7

    SHA512

    de09161ad4e0502c399063c6216df9c0bf14bef9740e7791feeb6e2b083bdcbe968af4e7af0c6c671af4e350eaad4131f6a88e7952207e82b559381694db7582

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

    Filesize

    482B

    MD5

    33e09a747efc15f0e88bb45783b9b5a1

    SHA1

    b2b8e34a2f0590cb69481281ceddd67cd0f70884

    SHA256

    82bb96c1ca754e858b20a27021cdc9d209e4858d2065165738742739562d851f

    SHA512

    aa041bc1e162de9719e45821344e3cf8a514775754a1aa3d2c0e5efe963be2af00249e41c2094886fcd566da6b164b2074a6941873d25892806192123568a3bc

  • C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build2.exe

    Filesize

    449KB

    MD5

    304dcbfad357a684b36d2d639cdbc3eb

    SHA1

    428c58d8c86c49e28bc9958608817bf6a97dd780

    SHA256

    bd5aff6936d77e3deae4e45195b44ec5d4e7ba4f2a9dfe68ee7d6f7be2cfd97a

    SHA512

    8dd618a8a22c3e7f0f19287c6ca8135959f34f30a5d2e19f10f71c45a6b7c8c7dc0900b3e23c3ae479455cd1ce94a744c0841c26bde28f28ef8552130d465d43

  • C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build2.exe

    Filesize

    449KB

    MD5

    304dcbfad357a684b36d2d639cdbc3eb

    SHA1

    428c58d8c86c49e28bc9958608817bf6a97dd780

    SHA256

    bd5aff6936d77e3deae4e45195b44ec5d4e7ba4f2a9dfe68ee7d6f7be2cfd97a

    SHA512

    8dd618a8a22c3e7f0f19287c6ca8135959f34f30a5d2e19f10f71c45a6b7c8c7dc0900b3e23c3ae479455cd1ce94a744c0841c26bde28f28ef8552130d465d43

  • C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build2.exe

    Filesize

    449KB

    MD5

    304dcbfad357a684b36d2d639cdbc3eb

    SHA1

    428c58d8c86c49e28bc9958608817bf6a97dd780

    SHA256

    bd5aff6936d77e3deae4e45195b44ec5d4e7ba4f2a9dfe68ee7d6f7be2cfd97a

    SHA512

    8dd618a8a22c3e7f0f19287c6ca8135959f34f30a5d2e19f10f71c45a6b7c8c7dc0900b3e23c3ae479455cd1ce94a744c0841c26bde28f28ef8552130d465d43

  • C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\a02593b9-0f48-41a1-b16b-6ed9fabd6f61\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\d8c6be4e-5c43-40b4-93c6-259fdbe9d031\260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33.exe

    Filesize

    708KB

    MD5

    67d7e45c271149ed13f7f5056dedf1f4

    SHA1

    98ee6a725e8f0e14552587ea604c786b934448ba

    SHA256

    260dbe90a05b58a837118647651367a2832590cd2f2e82107209e27045c09c33

    SHA512

    656612572e6347837229eaaa65536fb22150b688692ead62251f7446b291337612752f773f5240211aaf9122da5e01b10b04ef188c4e87655dd96559f7f28afb

  • 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/444-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/444-126-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/444-139-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/444-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/444-125-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/888-169-0x0000000003FB0000-0x0000000004027000-memory.dmp

    Filesize

    476KB

  • memory/888-168-0x00000000024A0000-0x00000000025A0000-memory.dmp

    Filesize

    1024KB

  • memory/2536-183-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/2536-234-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/2536-233-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/2536-172-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/2536-173-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/2536-195-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/2536-170-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/2760-143-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-179-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-163-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-161-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-159-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-194-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-151-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-144-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3988-120-0x0000000003580000-0x0000000003611000-memory.dmp

    Filesize

    580KB

  • memory/3988-124-0x0000000003580000-0x0000000003611000-memory.dmp

    Filesize

    580KB

  • memory/3988-121-0x0000000003670000-0x000000000378B000-memory.dmp

    Filesize

    1.1MB