Analysis

  • max time kernel
    145s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-05-2023 15:47

General

  • Target

    builder.exe

  • Size

    770KB

  • MD5

    669a891fe610e110917fad79b6876f55

  • SHA1

    a762faa446f6a8da5770ecca619fc2cffdf33ab1

  • SHA256

    733d197665d90ebcbe41ed14d872db66604706d8435e694985ad2c459ce59b70

  • SHA512

    59e4f2c17285360286941c016a37d1f26e14bccb858e782db40488612a746199b8c30a47554d0abfd0c71a35cfb8734cb72414d02db5419289fccd667fe52298

  • SSDEEP

    12288:HYhoWg3wNMP0/JtiTYdmJDJtnee32UEMWOktn3dR/v2FvMI33knQCk/:HSdNMPoJEYKJweGdSKNR/vQvb30w/

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .xash

  • offline_id

    uK3VnHYy6oibGbO8t2PDOMcT40gQoh5oUUCe2Lt1

  • 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-otP8Wlz4eh 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: 0707JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.9

Botnet

9dfa7ee730fa2f1efb5ed51dbbec22f5

C2

https://steamcommunity.com/profiles/76561199263069598

https://t.me/cybehost

Attributes
  • profile_id_v2

    9dfa7ee730fa2f1efb5ed51dbbec22f5

  • user_agent

    Mozilla/5.0 (compatible; Konqueror/3.5; Linux) KHTML/3.5.7 (like Gecko) (Debian)

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\builder.exe
    "C:\Users\Admin\AppData\Local\Temp\builder.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1940
    • C:\Users\Admin\AppData\Local\Temp\builder.exe
      "C:\Users\Admin\AppData\Local\Temp\builder.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1228
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\3debf21a-dd56-40af-8f5d-3d3e6ddc1ae5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4968
      • C:\Users\Admin\AppData\Local\Temp\builder.exe
        "C:\Users\Admin\AppData\Local\Temp\builder.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2596
        • C:\Users\Admin\AppData\Local\Temp\builder.exe
          "C:\Users\Admin\AppData\Local\Temp\builder.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4872
          • C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build2.exe
            "C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4448
            • C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build2.exe
              "C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:436
          • C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build3.exe
            "C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4168
            • 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:3704
  • 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:2172
    • 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:4432

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

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

    91425cdf7f700e70ded152906a8897d4

    SHA1

    91934f4da3b05318a7f9c13772c3148502095f90

    SHA256

    3d84c7f6ae4a5c248c01b6c0821b9df6931d93453d2cdd98b6acb14715d2662b

    SHA512

    f76c4f299d06decf930463e3d642edf25e099ab1a6cc4f24e5b91bc37d4aacf373733d98d87407b23e28569719721c1e0bed90d99338514e4be1788b329ef348

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

    1KB

    MD5

    a9a657bb9fbf982c38587ee2b9590a7d

    SHA1

    ba348aa472b2d143c829cd5a764605b8e22a353c

    SHA256

    d08e18ff8411d67ed596edcbf1aa36365d0cab8f4de48c7abfdb4062c4ab2b9c

    SHA512

    1dcfba62c5977a3dcdf70f3fb46f6e16ab2542b68d6ebbbc4bce76c0edc4982af8ad9e4afe1d71fd3f222e01da404254e6cfdb02605ba73e21987f09522d33e1

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

    488B

    MD5

    9cabe86d51a87d8e43ca342518156317

    SHA1

    7b155482196b8f94429f4cfac3ba871f3d56b9ba

    SHA256

    b96455e8d76c9198a314b8292993dea3b81661251f5871c482707f0458b66573

    SHA512

    c94e75304258cca3e2fa305263cad4c72ba249bc766749da8bb5398633efe48eea27331993b34be323c642adf151f53dce9cf329f8171b090a9f780fd1de569d

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

    482B

    MD5

    d9fd18a1706485674da93f70e9ff4735

    SHA1

    31c9193760f23dd05df13da336220f53aa29642c

    SHA256

    3336d50a4770a3b39fe292db9cf351a8ee1062d11a3b166433111e7bef3cdfef

    SHA512

    e575759e40f38ed11cab192b9f5fb5ee09e0ba89617a10255c31263147b649542eb93de6463e4f6aad502d48869471e854418b301f45779d7def0f17787dcd05

  • C:\Users\Admin\AppData\Local\3debf21a-dd56-40af-8f5d-3d3e6ddc1ae5\builder.exe
    Filesize

    770KB

    MD5

    669a891fe610e110917fad79b6876f55

    SHA1

    a762faa446f6a8da5770ecca619fc2cffdf33ab1

    SHA256

    733d197665d90ebcbe41ed14d872db66604706d8435e694985ad2c459ce59b70

    SHA512

    59e4f2c17285360286941c016a37d1f26e14bccb858e782db40488612a746199b8c30a47554d0abfd0c71a35cfb8734cb72414d02db5419289fccd667fe52298

  • C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build2.exe
    Filesize

    379KB

    MD5

    37b6aab56a0f770ce58a670322361a1c

    SHA1

    87606604cdaa89b93d4d1b5e3e12f5ec24f60016

    SHA256

    3d9cf227ef3c29b9ca22c66359fdd61d9b3d3f2bb197ec3df42d49ff22b989a4

    SHA512

    7b99a56e2160b3f910f75b5d21975587310ad61738613cefbce0d0b25c9d3af07ebeae9c6668907e00e2866259fcca079b4137e06c0d7cede5c5e5178d030a1e

  • C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build2.exe
    Filesize

    379KB

    MD5

    37b6aab56a0f770ce58a670322361a1c

    SHA1

    87606604cdaa89b93d4d1b5e3e12f5ec24f60016

    SHA256

    3d9cf227ef3c29b9ca22c66359fdd61d9b3d3f2bb197ec3df42d49ff22b989a4

    SHA512

    7b99a56e2160b3f910f75b5d21975587310ad61738613cefbce0d0b25c9d3af07ebeae9c6668907e00e2866259fcca079b4137e06c0d7cede5c5e5178d030a1e

  • C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build2.exe
    Filesize

    379KB

    MD5

    37b6aab56a0f770ce58a670322361a1c

    SHA1

    87606604cdaa89b93d4d1b5e3e12f5ec24f60016

    SHA256

    3d9cf227ef3c29b9ca22c66359fdd61d9b3d3f2bb197ec3df42d49ff22b989a4

    SHA512

    7b99a56e2160b3f910f75b5d21975587310ad61738613cefbce0d0b25c9d3af07ebeae9c6668907e00e2866259fcca079b4137e06c0d7cede5c5e5178d030a1e

  • C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build2.exe
    Filesize

    379KB

    MD5

    37b6aab56a0f770ce58a670322361a1c

    SHA1

    87606604cdaa89b93d4d1b5e3e12f5ec24f60016

    SHA256

    3d9cf227ef3c29b9ca22c66359fdd61d9b3d3f2bb197ec3df42d49ff22b989a4

    SHA512

    7b99a56e2160b3f910f75b5d21975587310ad61738613cefbce0d0b25c9d3af07ebeae9c6668907e00e2866259fcca079b4137e06c0d7cede5c5e5178d030a1e

  • C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build3.exe
    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\build3.exe
    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\5724a565-ae99-4123-91a1-4108e76d4f03\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/436-183-0x0000000000400000-0x000000000046B000-memory.dmp
    Filesize

    428KB

  • memory/436-185-0x0000000000400000-0x000000000046B000-memory.dmp
    Filesize

    428KB

  • memory/436-199-0x0000000000400000-0x000000000046B000-memory.dmp
    Filesize

    428KB

  • memory/436-208-0x0000000061E00000-0x0000000061EF3000-memory.dmp
    Filesize

    972KB

  • memory/436-279-0x0000000000400000-0x000000000046B000-memory.dmp
    Filesize

    428KB

  • memory/436-277-0x0000000000400000-0x000000000046B000-memory.dmp
    Filesize

    428KB

  • memory/436-181-0x0000000000400000-0x000000000046B000-memory.dmp
    Filesize

    428KB

  • memory/436-278-0x0000000000400000-0x000000000046B000-memory.dmp
    Filesize

    428KB

  • memory/1228-134-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1228-135-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1228-137-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1228-138-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1228-148-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1940-136-0x0000000002660000-0x000000000277B000-memory.dmp
    Filesize

    1.1MB

  • memory/4448-184-0x0000000000AA0000-0x0000000000AF7000-memory.dmp
    Filesize

    348KB

  • memory/4872-204-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4872-152-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4872-166-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4872-165-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4872-163-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4872-159-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4872-158-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4872-281-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4872-157-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4872-151-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB