Analysis

  • max time kernel
    149s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    25-07-2024 15:34

General

  • Target

    0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db.exe

  • Size

    792KB

  • MD5

    4e8dcbde14041ca343eea4ab3f0966c6

  • SHA1

    ed696645eca467d84ea2fd5c7d03517f3762da93

  • SHA256

    0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db

  • SHA512

    fd31800fa8139f4cda7977b4bf4c298359e39d606f5db480063546765f9b4a1e3280abce985cb58fe8ae783479e0f006350e52e4bd6b8160a19ec2b3cb4f31bc

  • SSDEEP

    24576:tocYLYjvFiJMEjiXyDxdY3l5bnZ/GZyN:2c5vsnjiXHbbZOwN

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes
  • extension

    .kkia

  • offline_id

    dYUDKE4rrBmSPsf8srHMsyP40jle9uyxDDCfdxt1

  • payload_url

    http://zerit.top/dl/build2.exe

    http://fuyt.org/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-NdDG3HIUZp 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: 0425Jsfkjn

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 14 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 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 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db.exe
    "C:\Users\Admin\AppData\Local\Temp\0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2256
    • C:\Users\Admin\AppData\Local\Temp\GTpwsO.exe
      C:\Users\Admin\AppData\Local\Temp\GTpwsO.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2376
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\10547f9d.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2656
    • C:\Users\Admin\AppData\Local\Temp\0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db.exe
      "C:\Users\Admin\AppData\Local\Temp\0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2796
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\4b034534-617a-4232-b13d-2653f0baddfc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:1872
      • C:\Users\Admin\AppData\Local\Temp\0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db.exe
        "C:\Users\Admin\AppData\Local\Temp\0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1116
        • C:\Users\Admin\AppData\Local\Temp\GTpwsO.exe
          C:\Users\Admin\AppData\Local\Temp\GTpwsO.exe
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1576
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\57794527.bat" "
            5⤵
            • System Location Discovery: System Language Discovery
            PID:1760
        • C:\Users\Admin\AppData\Local\Temp\0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db.exe
          "C:\Users\Admin\AppData\Local\Temp\0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1724

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    1KB

    MD5

    7fb5fa1534dcf77f2125b2403b30a0ee

    SHA1

    365d96812a69ac0a4611ea4b70a3f306576cc3ea

    SHA256

    33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

    SHA512

    a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

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

    Filesize

    436B

    MD5

    1bfe0a81db078ea084ff82fe545176fe

    SHA1

    50b116f578bd272922fa8eae94f7b02fd3b88384

    SHA256

    5ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f

    SHA512

    37c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d

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

    Filesize

    174B

    MD5

    da77c883c1da18c25110cf829b7df83f

    SHA1

    4228ed423f4d1aaadbfa5583166d01945dd698e9

    SHA256

    7af665acd1fb523ed1fdf2a950d9a08800055cdd8be8bac1ee8eb1a96cbabfca

    SHA512

    e6637419624723726b5783752e461d3016f91d78540137013376f5a987fe0a5e020c7d515a60c9a445520ba9b5b041b1a3cdd0fd196f8fd679c917b9e3f702b7

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

    Filesize

    170B

    MD5

    ac76a5de9de580d9b5cc9493d6902985

    SHA1

    2a13fa62d8565b0ea8dcd418b0e5ad3bd489cef4

    SHA256

    8c316ccbaccae3e8507531bbab1f272fa10fdb5c11608dad53c10a7181964a0d

    SHA512

    ade94f3cd4e1a8bd01baf15c04bb5c88c5542592231b377fc6b19411eee22f98e28051465490305255bacd6f6670d1cc64f6873e9e995f0e50a191ecf1112404

  • C:\Users\Admin\AppData\Local\4b034534-617a-4232-b13d-2653f0baddfc\0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db.exe

    Filesize

    792KB

    MD5

    4e8dcbde14041ca343eea4ab3f0966c6

    SHA1

    ed696645eca467d84ea2fd5c7d03517f3762da93

    SHA256

    0fca5cc453a703c35c7c311dd7d7d0ffd64d5551f874399eef8aa25cd46fc6db

    SHA512

    fd31800fa8139f4cda7977b4bf4c298359e39d606f5db480063546765f9b4a1e3280abce985cb58fe8ae783479e0f006350e52e4bd6b8160a19ec2b3cb4f31bc

  • C:\Users\Admin\AppData\Local\Temp\10547f9d.bat

    Filesize

    187B

    MD5

    87d361295cd4ed3653ca37223c27da58

    SHA1

    e1104ef122a456e49eb7b063ff20e63facbeabf8

    SHA256

    b21b70c84d997356d74a43afe11e86048bfe3f199dbcf8c904bba4555692708c

    SHA512

    d2d5ef6a06c275eac4b5e39868391512de2c6c04d1237948c59ea13715437ff6a0d8366e8cb7f9ee6e7c31d97773c5dc4b0ffed7a9694b763899efdbf5d5a99e

  • C:\Users\Admin\AppData\Local\Temp\57794527.bat

    Filesize

    187B

    MD5

    978c806902fa7f93eed6969d5afecfb8

    SHA1

    baa500adfac294af28a166b2e62b170e49421969

    SHA256

    67fe90a5160c588ce11d03efb53093c7da911e7e9358a1f5e775be3c500a817a

    SHA512

    894944bd10c4dfbca857e82d25260c52c93cce92fcdc5404a22b179dac3dd127c2908306b6bfd2e8599aa742e12bfee043d97f0679585b8011b26d16e5c5bd2f

  • C:\Users\Admin\AppData\Local\Temp\CabDBFD.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • \Users\Admin\AppData\Local\Temp\GTpwsO.exe

    Filesize

    15KB

    MD5

    f7d21de5c4e81341eccd280c11ddcc9a

    SHA1

    d4e9ef10d7685d491583c6fa93ae5d9105d815bd

    SHA256

    4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

    SHA512

    e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

  • memory/1116-71-0x0000000000220000-0x0000000000229000-memory.dmp

    Filesize

    36KB

  • memory/1116-89-0x0000000000400000-0x000000000050B000-memory.dmp

    Filesize

    1.0MB

  • memory/1116-85-0x00000000002B0000-0x0000000000342000-memory.dmp

    Filesize

    584KB

  • memory/1116-70-0x0000000000220000-0x0000000000229000-memory.dmp

    Filesize

    36KB

  • memory/1576-72-0x00000000001F0000-0x00000000001F9000-memory.dmp

    Filesize

    36KB

  • memory/1576-82-0x00000000001F0000-0x00000000001F9000-memory.dmp

    Filesize

    36KB

  • memory/1724-117-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1724-118-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1724-114-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1724-111-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1724-101-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1724-102-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1724-88-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1724-103-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1724-116-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2256-20-0x0000000001E20000-0x0000000001F3B000-memory.dmp

    Filesize

    1.1MB

  • memory/2256-16-0x0000000000580000-0x0000000000612000-memory.dmp

    Filesize

    584KB

  • memory/2256-22-0x00000000021B0000-0x00000000022BB000-memory.dmp

    Filesize

    1.0MB

  • memory/2256-15-0x0000000000580000-0x0000000000612000-memory.dmp

    Filesize

    584KB

  • memory/2256-7-0x0000000000400000-0x000000000050B000-memory.dmp

    Filesize

    1.0MB

  • memory/2256-8-0x00000000001B0000-0x00000000001B9000-memory.dmp

    Filesize

    36KB

  • memory/2256-9-0x00000000001B0000-0x00000000001B9000-memory.dmp

    Filesize

    36KB

  • memory/2256-21-0x0000000000400000-0x000000000050B000-memory.dmp

    Filesize

    1.0MB

  • memory/2376-12-0x0000000000030000-0x0000000000039000-memory.dmp

    Filesize

    36KB

  • memory/2376-41-0x0000000000030000-0x0000000000039000-memory.dmp

    Filesize

    36KB

  • memory/2796-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2796-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2796-61-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2796-60-0x0000000003B10000-0x0000000003C1B000-memory.dmp

    Filesize

    1.0MB

  • memory/2796-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2796-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB