Analysis

  • max time kernel
    145s
  • max time network
    131s
  • platform
    windows10-1703_x64
  • resource
    win10-20230915-en
  • resource tags

    arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system
  • submitted
    22-09-2023 03:21

General

  • Target

    177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe

  • Size

    803KB

  • MD5

    c58aca49341a89e3023bb394651c60af

  • SHA1

    a505024620347186d39d1303985654dade9ee085

  • SHA256

    177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39

  • SHA512

    0c94525a9ed9286d20ce7399b74e056fb93c932431af6cecb6c87927fbef955cbd0634f82834f3b614e710331afffeafc4d5b69b45d9f1db4aa3f055629523e5

  • SSDEEP

    12288:po+oPxj2ee33HI+RuAa+f+Snu3KcdIR9aKUya5/PWswf3vuXsHoe7w8mr8:ihZ217rWT39gCsHoe7wRr8

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .wwpl

  • offline_id

    LtYnlJvK0hICyOCeum6Tv4pbia9jcIGHVgA3Xht1

  • 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-xoUXGr6cqT 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: support@freshmail.top Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0786JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

5.7

Botnet

5c0b4a12d6c03dd98ed431d3eded2169

C2

https://steamcommunity.com/profiles/76561199553369541

https://t.me/dastanatg

Attributes
  • profile_id_v2

    5c0b4a12d6c03dd98ed431d3eded2169

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_8) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.7 Safari/605.1.75

Signatures

  • Detected Djvu ransomware 17 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\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
    "C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2204
    • C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
      "C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4604
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f171750d-ba4c-4b31-a43e-3a0cf277f597" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:5108
      • C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
        "C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1856
        • C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
          "C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3336
          • C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build2.exe
            "C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:708
            • C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build2.exe
              "C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:3136
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:2924
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4876
          • C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build3.exe
            "C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3092
            • 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:4244
  • 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:800
    • 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:3156

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

File and Directory Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

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

    2KB

    MD5

    ea42a7ee6b4feb94720dcd38dfaca03e

    SHA1

    09e132a3dad531f41d561f96e447107df3826c8d

    SHA256

    49024bbec636af6e8a88991af1f95df745755015ab8e0b9be1d9bcaa0c44aae9

    SHA512

    362de39769654d28579284463da7a5116f248ebf8b62f4fbe4a8f57a5d701c07dec3b3d8f35130cfd2307511117754cb8438922773e94812f7a84f974451d8fa

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

    1KB

    MD5

    e493991c8b05edd2d0c73af44034a56d

    SHA1

    91aa82532ca1609682dd3599fd91e794c4e42dab

    SHA256

    b142563e39d86fe31530727b07a285d4f4f9801380b1f8012792467eba14c026

    SHA512

    93ab83121912acee80cb47f68ed0279b83f93d58daa8803741608d507a1b18ce0ea4b5448de12649fd10e8b247122b65ef2340d44f7e04c59c8b7cf4b38690d3

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

    488B

    MD5

    d83e398c9753b626169f3f35c6844417

    SHA1

    f0e9cebafbcf3b7d6e34adc0c98fa0a2e3d03073

    SHA256

    78c0e0a7ec2d0f188149839bee09293684bd2c3f0c44e1f37e41d13edf4103ae

    SHA512

    2450c8d760aad52400fc9bdfec2fcead86d180480c579e8fc3f0bca9700284a23afda2303c81d0871870885a051b23fddaa758e2972f59b919d01ff55d326638

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

    482B

    MD5

    a9349b8a144865404c31115c582683d6

    SHA1

    faa85c2ccc3a79cc6f6c2629754afcf89c48160c

    SHA256

    aa684d4c407d324f1d011397c6a8ef65da7bb5d2759cc82c086c347e81dc8296

    SHA512

    b23c04f8d38986d21d350dc0cf9ab13d8e229db02beab433495c0edf1146a363368858579ac02d067ac66bafa37b950bdf36df19ff46fe4bf36ce4263117cab2

  • C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build2.exe
    Filesize

    316KB

    MD5

    b298c49f1808cc5d93dcc3dfc088b10f

    SHA1

    c0b8e909d0ef573e0f5a4e25870a63f3f6ee1306

    SHA256

    ffaed8dcf0282df833b74faf419729dc20951ee7edbb58103fa5c582e93d5f3a

    SHA512

    1b75aeaa793b5aa92769f68bb0f677206394f5b28e7ac1a23f6be923af812a5a9033920af0c2de1e6805e46a5c9ec283ddecd879b1264d75d7b4190266028895

  • C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build2.exe
    Filesize

    316KB

    MD5

    b298c49f1808cc5d93dcc3dfc088b10f

    SHA1

    c0b8e909d0ef573e0f5a4e25870a63f3f6ee1306

    SHA256

    ffaed8dcf0282df833b74faf419729dc20951ee7edbb58103fa5c582e93d5f3a

    SHA512

    1b75aeaa793b5aa92769f68bb0f677206394f5b28e7ac1a23f6be923af812a5a9033920af0c2de1e6805e46a5c9ec283ddecd879b1264d75d7b4190266028895

  • C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build2.exe
    Filesize

    316KB

    MD5

    b298c49f1808cc5d93dcc3dfc088b10f

    SHA1

    c0b8e909d0ef573e0f5a4e25870a63f3f6ee1306

    SHA256

    ffaed8dcf0282df833b74faf419729dc20951ee7edbb58103fa5c582e93d5f3a

    SHA512

    1b75aeaa793b5aa92769f68bb0f677206394f5b28e7ac1a23f6be923af812a5a9033920af0c2de1e6805e46a5c9ec283ddecd879b1264d75d7b4190266028895

  • C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build3.exe
    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\bcd9e869-d345-4a97-868d-14f2e61a7b13\build3.exe
    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\f171750d-ba4c-4b31-a43e-3a0cf277f597\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
    Filesize

    803KB

    MD5

    c58aca49341a89e3023bb394651c60af

    SHA1

    a505024620347186d39d1303985654dade9ee085

    SHA256

    177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39

    SHA512

    0c94525a9ed9286d20ce7399b74e056fb93c932431af6cecb6c87927fbef955cbd0634f82834f3b614e710331afffeafc4d5b69b45d9f1db4aa3f055629523e5

  • 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

    1MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/708-46-0x0000000000590000-0x00000000005BE000-memory.dmp
    Filesize

    184KB

  • memory/708-50-0x0000000000590000-0x00000000005BE000-memory.dmp
    Filesize

    184KB

  • memory/708-47-0x0000000000740000-0x0000000000791000-memory.dmp
    Filesize

    324KB

  • memory/1856-20-0x0000000002320000-0x00000000023BF000-memory.dmp
    Filesize

    636KB

  • memory/2204-1-0x0000000002450000-0x00000000024EF000-memory.dmp
    Filesize

    636KB

  • memory/2204-2-0x00000000024F0000-0x000000000260B000-memory.dmp
    Filesize

    1MB

  • memory/3136-51-0x0000000000400000-0x0000000000465000-memory.dmp
    Filesize

    404KB

  • memory/3136-56-0x0000000000400000-0x0000000000465000-memory.dmp
    Filesize

    404KB

  • memory/3136-113-0x0000000000400000-0x0000000000465000-memory.dmp
    Filesize

    404KB

  • memory/3136-112-0x0000000000400000-0x0000000000465000-memory.dmp
    Filesize

    404KB

  • memory/3136-111-0x0000000000400000-0x0000000000465000-memory.dmp
    Filesize

    404KB

  • memory/3136-48-0x0000000000400000-0x0000000000465000-memory.dmp
    Filesize

    404KB

  • memory/3136-73-0x0000000061E00000-0x0000000061EF3000-memory.dmp
    Filesize

    972KB

  • memory/3136-62-0x0000000000400000-0x0000000000465000-memory.dmp
    Filesize

    404KB

  • memory/3336-29-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/3336-36-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/3336-34-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/3336-22-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/3336-23-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/3336-58-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/3336-45-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/3336-37-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/3336-30-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/3336-24-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/4604-17-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/4604-4-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/4604-6-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/4604-5-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB

  • memory/4604-3-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1MB