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Analysis

  • max time kernel
    148s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/12/2024, 13:02

General

  • Target

    cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe

  • Size

    772KB

  • MD5

    cd220a082a015e31b48905223ae4d90e

  • SHA1

    4763eb2dcdf87d07dd18e176e21e3a676aa79bf4

  • SHA256

    cc2d59e5fe1823c860fa7b4996f8b5be24bbc4da15b757ea477ef3864031fac1

  • SHA512

    d53fec6f9418e38f511afa61e2c54641a8fa51960f58293a47e226f6c938de2e1d4f3338a18e11f65da338f859a217b42fc1ce1d783acd116f5efb8fe354716b

  • SSDEEP

    12288:ysbay2bWS7Njlewp2ibfsI4/nX/tE59zXgWwfgLoS1F2K2EglvP8j9C5DY:ysbaLb33Tp2w0RntgzyoV/2EQvw9

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/fhsgtsspen6/get.php

Attributes
  • extension

    .reqg

  • offline_id

    ioYmb0jtMMtue7xjmkS3WQWGWLR8FTQhb2giQtt1

  • payload_url

    http://securebiz.org/dl/build2.exe

    http://astdg.top/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-jTbSQT8ApY 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: 0324gDrgo

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 19 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu family
  • Renames multiple (150) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 4 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).

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:336
    • C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:848
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a81b897b-e7c3-4b32-8533-7e14b1173abc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3008
      • C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:780
        • C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2812
  • C:\Users\Admin\AppData\Local\a81b897b-e7c3-4b32-8533-7e14b1173abc\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
    C:\Users\Admin\AppData\Local\a81b897b-e7c3-4b32-8533-7e14b1173abc\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe --Task
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3988
    • C:\Users\Admin\AppData\Local\a81b897b-e7c3-4b32-8533-7e14b1173abc\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\a81b897b-e7c3-4b32-8533-7e14b1173abc\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe --Task
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1088

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    67e486b2f148a3fca863728242b6273e

    SHA1

    452a84c183d7ea5b7c015b597e94af8eef66d44a

    SHA256

    facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

    SHA512

    d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    e61851c9aaf248295e42f8f2483d3eb3

    SHA1

    7097d5d9283cf66f7c96ee514e666a4be5e7e638

    SHA256

    3bff562370467a3e2dce396d6e9a0539c05b721357508173e110a2a080a9f9dc

    SHA512

    4b6163b95c92a435c096426b8b12203ceb92b6b3a29d744d63fa67032c3f719b78fafccaf1a3f12d04175a1ac2de49c461505f0c6e040d1ac11a8ed0b8bdf90b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    e11ff870e823e0d3db523efa9809f89a

    SHA1

    c051225a9eaf1ae2df31f9500cac6b03d9ab1b5b

    SHA256

    c28b958810d79fa7f8cfe438491570b120669dc4a6544e1482df0290f6e60ff9

    SHA512

    0d2135539d5a64cb857f7198388c0a7c9c3a762042a6da192732e24461d6976be63fb2e8b7761b4646955c1a888727c63048c43c1e426a3dbdf2886bc1f35c3b

  • C:\Users\Admin\AppData\Local\a81b897b-e7c3-4b32-8533-7e14b1173abc\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe

    Filesize

    772KB

    MD5

    cd220a082a015e31b48905223ae4d90e

    SHA1

    4763eb2dcdf87d07dd18e176e21e3a676aa79bf4

    SHA256

    cc2d59e5fe1823c860fa7b4996f8b5be24bbc4da15b757ea477ef3864031fac1

    SHA512

    d53fec6f9418e38f511afa61e2c54641a8fa51960f58293a47e226f6c938de2e1d4f3338a18e11f65da338f859a217b42fc1ce1d783acd116f5efb8fe354716b

  • memory/336-1-0x0000000004A60000-0x0000000004AF6000-memory.dmp

    Filesize

    600KB

  • memory/336-2-0x0000000004BC0000-0x0000000004CDB000-memory.dmp

    Filesize

    1.1MB

  • memory/848-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/848-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/848-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/848-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/848-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1088-59-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1088-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-40-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-41-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2812-364-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB