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Resubmissions

24/08/2023, 19:20

230824-x13e3sgg3y 10

24/08/2023, 19:16

230824-xy6pqagg21 10

Analysis

  • max time kernel
    54s
  • max time network
    20s
  • platform
    windows10-1703_x64
  • resource
    win10-20230703-en
  • resource tags

    arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system
  • submitted
    24/08/2023, 19:20

General

  • Target

    841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe

  • Size

    762KB

  • MD5

    2e1c250639a956a9790f28e8208de685

  • SHA1

    cc7d4e2d6a74b2431b6e53b876f055367d2737f0

  • SHA256

    841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87

  • SHA512

    3ffed2880b73215d53e5f09bf8b277e47dd9e677bde5c8861b7a23c080b5fca5903303f87c75d1de446ddc4f407a00ac994c95745ed774d2d8fab4f0d04ad7d6

  • SSDEEP

    12288:ZxbDQE4JyP20DdHEiJJY8mqgdMBQF7wlw3LQCnweAlcuac5hKgkalGlB:ZNQ1o20DtrYyex6uuBkPb

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .wzqw

  • offline_id

    pGPY4MKNHaEeN9pLKNW37rI0mblzUZFtPsjZ8Ht1

  • 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-E3ktviSmlG 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: 0765zSjfr

rsa_pubkey.plain

Extracted

Family

vidar

Version

5.3

Botnet

562ce294a991b18054802a17b24ce0f9

C2

https://t.me/buukcay

https://steamcommunity.com/profiles/76561199544211655

Attributes
  • profile_id_v2

    562ce294a991b18054802a17b24ce0f9

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).

  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe
    "C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5116
    • C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe
      "C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3576
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\d70c0925-793c-4571-b3db-92499e85e6ce" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:312
      • C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe
        "C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4464
        • C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe
          "C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3952
          • C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build2.exe
            "C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4576
            • C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build2.exe
              "C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:3856
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1768
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:2104
          • C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build3.exe
            "C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:596
            • 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:2584
  • 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:1304
    • 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:3752

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

    2047c5276498695b2aae5fab09708b18

    SHA1

    e6e47381a8f7ad1d552ca6e587a38c68cc4eb5a7

    SHA256

    ef854bb906dc4d7d50d2c8cf812999276848c574c35bd342762b2fe2305db9bf

    SHA512

    4266e74e941befc8e51f377f1025554d2b82de50a7883d9d326420134253d8584b7133ca503476a1336e924e4d987f5f957e5d2379e9dc40e906eba97f3eb239

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

    Filesize

    1KB

    MD5

    1f94d4d280ff409d554abab350d17ef1

    SHA1

    6df310f84e1b99164310b7324996b71a3cb3fe24

    SHA256

    047a1f77bd04d3b566fe9f71e653e788ba99ecfa954cd169fde5b70517350a11

    SHA512

    25e67e76e011e6cb6bfd4654daef6a7c30d67db62006519549b209b3e0f6714437e08ce5ff2f26a8da54e9f0b37482ceb1ad0c2e15ee7cdb4d79347d7e0309fd

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

    Filesize

    488B

    MD5

    8ce1a45301a7e34be73fe6585f9f8938

    SHA1

    a0f1bcaace2729bd1642da6ee239c310bd27bb3e

    SHA256

    1ed2d915ca67fc8e39efd261ee2da2124828b287773ad484bad4f5e41ff949ab

    SHA512

    f72a7d69786681f2d1f54bc7755db5027c1a90fa5321cefc04e4a36442daef43be89635563043e3824b4670cad8f31f97e4c85699f98ff078aeffa3a1c690a64

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

    Filesize

    482B

    MD5

    01871844eeff2684eb91d06cdf0b3c6c

    SHA1

    860ccb2581ed2ea51ca7ef999638a5a2ae3f9a2e

    SHA256

    09d5e1c9e3839534aa70ee2e7f4465a625cab99f163e8d35afc19da55abf50ae

    SHA512

    825d4911e24a094db5574a1ebab25de4fa12ef63a1ec2f3f87dacdfccd4a5add539862ac05d5d6db008597d950e9ba747711e98496e7bff171ad60741e742e9f

  • C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build2.exe

    Filesize

    361KB

    MD5

    9545d2c1b9c67ae6c7536fa637f6e8dc

    SHA1

    b2654f52dfde5ae8791588d224fe707784a3c6fd

    SHA256

    44f9e81a2e056d24c0da23b8be38d37eceefe06e5bc6dbf67df2b18caf6223b8

    SHA512

    6eef0a2feec33e8bf1a6ede2fc62ee531299ce49759df07a463e8c5476617184d9b8e5a21fbb4b6641131a7130474f39800839c3d0127ba84b8f5a7b3fdffa4c

  • C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build2.exe

    Filesize

    361KB

    MD5

    9545d2c1b9c67ae6c7536fa637f6e8dc

    SHA1

    b2654f52dfde5ae8791588d224fe707784a3c6fd

    SHA256

    44f9e81a2e056d24c0da23b8be38d37eceefe06e5bc6dbf67df2b18caf6223b8

    SHA512

    6eef0a2feec33e8bf1a6ede2fc62ee531299ce49759df07a463e8c5476617184d9b8e5a21fbb4b6641131a7130474f39800839c3d0127ba84b8f5a7b3fdffa4c

  • C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build2.exe

    Filesize

    361KB

    MD5

    9545d2c1b9c67ae6c7536fa637f6e8dc

    SHA1

    b2654f52dfde5ae8791588d224fe707784a3c6fd

    SHA256

    44f9e81a2e056d24c0da23b8be38d37eceefe06e5bc6dbf67df2b18caf6223b8

    SHA512

    6eef0a2feec33e8bf1a6ede2fc62ee531299ce49759df07a463e8c5476617184d9b8e5a21fbb4b6641131a7130474f39800839c3d0127ba84b8f5a7b3fdffa4c

  • C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\62f16ba3-405d-4ca0-99b5-e3ad2a0dff43\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\d70c0925-793c-4571-b3db-92499e85e6ce\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe

    Filesize

    762KB

    MD5

    2e1c250639a956a9790f28e8208de685

    SHA1

    cc7d4e2d6a74b2431b6e53b876f055367d2737f0

    SHA256

    841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87

    SHA512

    3ffed2880b73215d53e5f09bf8b277e47dd9e677bde5c8861b7a23c080b5fca5903303f87c75d1de446ddc4f407a00ac994c95745ed774d2d8fab4f0d04ad7d6

  • 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/3576-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3576-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3576-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3576-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3576-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3856-56-0x0000000000400000-0x000000000046F000-memory.dmp

    Filesize

    444KB

  • memory/3856-58-0x0000000000400000-0x000000000046F000-memory.dmp

    Filesize

    444KB

  • memory/3856-113-0x0000000000400000-0x000000000046F000-memory.dmp

    Filesize

    444KB

  • memory/3856-112-0x0000000000400000-0x000000000046F000-memory.dmp

    Filesize

    444KB

  • memory/3856-111-0x0000000000400000-0x000000000046F000-memory.dmp

    Filesize

    444KB

  • memory/3856-73-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/3856-61-0x0000000000400000-0x000000000046F000-memory.dmp

    Filesize

    444KB

  • memory/3856-59-0x0000000000400000-0x000000000046F000-memory.dmp

    Filesize

    444KB

  • memory/3952-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-62-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4464-20-0x0000000003E50000-0x0000000003EE8000-memory.dmp

    Filesize

    608KB

  • memory/4576-55-0x0000000003510000-0x000000000356B000-memory.dmp

    Filesize

    364KB

  • memory/4576-60-0x0000000001A40000-0x0000000001A71000-memory.dmp

    Filesize

    196KB

  • memory/4576-54-0x0000000001A40000-0x0000000001A71000-memory.dmp

    Filesize

    196KB

  • memory/5116-1-0x0000000004020000-0x00000000040BA000-memory.dmp

    Filesize

    616KB

  • memory/5116-2-0x0000000004170000-0x000000000428B000-memory.dmp

    Filesize

    1.1MB