Analysis

  • max time kernel
    145s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    12-08-2024 16:48

General

  • Target

    8f81e96f8c96dec003b51826bbd5885f_JaffaCakes118.exe

  • Size

    758KB

  • MD5

    8f81e96f8c96dec003b51826bbd5885f

  • SHA1

    7b8c4ec9a3808eaa32ab07d1608ad275f34adbe3

  • SHA256

    f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4

  • SHA512

    8770f01b013e401a3eef992aa53e7623a0367bf857309fa238781f70f44ef3e1e5697751d2a28b7ff1f35e8fad921b3fbfeb17f3c9724fab786934c8eb8ee8ce

  • SSDEEP

    12288:VI/X+roiofZzZXvGasEKcXm/WThCFrUi/bwV5LYBYH7caEArXMViC53j:gOsiorGLEKT/WThUlbaUYH7lE005

Malware Config

Extracted

Family

djvu

C2

http://securebiz.org/fhsgtsspen6/get.php

Attributes
  • extension

    .rigd

  • offline_id

    gigF2ELYocnMQz77LhEpSoXvtYp2junk9HZFtJt1

  • payload_url

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

    http://securebiz.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-2zbBkO06mv 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: 0335gSd743d

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2148
    • C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2088
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\b584319d-51c2-4fe7-9cd3-9382c7e4b113" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:1284
      • C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2688
        • C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2760

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

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

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

    Filesize

    174B

    MD5

    ab708b48c123ef07dcf2718b72ce5dd1

    SHA1

    cffd5380e4e4ae5bf9b718402c6605242ae02a90

    SHA256

    a6d1682aceba63c758c7d69f30f671594e3da56830294bfd1251141e0f50c290

    SHA512

    c18845e97c4e76462bf74c5986e3de74578897d291aacf09708485ef7c88e1d46bdaa564e26e0942b7335f2e9c39cf4d13da5d21c50eef64ad30f6c3d843c687

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

    Filesize

    170B

    MD5

    5f4ad34bd9c1c98ace509fbcb1d73657

    SHA1

    e7bf294189a6072a8c59b7df83e03031ca5a1237

    SHA256

    8a4aa5f9a734f1206c540752867b295b7fd90381d47c93958b910c5c718de71f

    SHA512

    0af6941ca19cbda22d50c10e057378dbc4f2b90e43207ff8b3d4005ed7402f96c2f61fe7212034e8c786581e176a79a994d24cd3c40df9199b5498c58e7b2c7d

  • C:\Users\Admin\AppData\Local\Temp\CabC948.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\b584319d-51c2-4fe7-9cd3-9382c7e4b113\8f81e96f8c96dec003b51826bbd5885f_JaffaCakes118.exe

    Filesize

    758KB

    MD5

    8f81e96f8c96dec003b51826bbd5885f

    SHA1

    7b8c4ec9a3808eaa32ab07d1608ad275f34adbe3

    SHA256

    f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4

    SHA512

    8770f01b013e401a3eef992aa53e7623a0367bf857309fa238781f70f44ef3e1e5697751d2a28b7ff1f35e8fad921b3fbfeb17f3c9724fab786934c8eb8ee8ce

  • memory/2088-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2088-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2088-7-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2088-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2088-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2148-0-0x00000000008F0000-0x0000000000981000-memory.dmp

    Filesize

    580KB

  • memory/2148-5-0x0000000000AC0000-0x0000000000BDB000-memory.dmp

    Filesize

    1.1MB

  • memory/2148-1-0x00000000008F0000-0x0000000000981000-memory.dmp

    Filesize

    580KB

  • memory/2688-28-0x00000000002B0000-0x0000000000341000-memory.dmp

    Filesize

    580KB

  • memory/2688-34-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/2688-52-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/2760-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-59-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-58-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-60-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB