Analysis

  • max time kernel
    147s
  • 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 19:47

General

  • Target

    70f992e73d440fe02244b8fd3962ba61_JaffaCakes118.exe

  • Size

    810KB

  • MD5

    70f992e73d440fe02244b8fd3962ba61

  • SHA1

    1100fd25b820c64613dd16f8cbf16e9c54cc1287

  • SHA256

    5482bcb0f258027740ffc73b7dba78273bf6a11971152a6354b01db1eb2e6290

  • SHA512

    483d5a51bbc75baefe102d4901ebfbae1ef98c4ca0a78656293d9ca53bbdeee58d084a386b783bbfcf86b867ee4e790d5740024f6cffb9e26e76d6c6ec0e0c88

  • SSDEEP

    12288:3hLzRs8dx/4TZ2vFkRYLFaJFLQLYzleyb1DKohOGzeANRi8CKz3Zhzxp6L:3dRsqKZ2NkRYcnzle21DjhmKzJN36L

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .tisc

  • offline_id

    uFHwN7bjwCkJEeUg8JHISzLqrwudidH8XsPzHDt1

  • 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-1JwFK5rT39 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: 0336gSd743d

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 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\70f992e73d440fe02244b8fd3962ba61_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\70f992e73d440fe02244b8fd3962ba61_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1708
    • C:\Users\Admin\AppData\Local\Temp\70f992e73d440fe02244b8fd3962ba61_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\70f992e73d440fe02244b8fd3962ba61_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1748
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\18c42105-0d01-4451-bd08-68e37032409d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2784
      • C:\Users\Admin\AppData\Local\Temp\70f992e73d440fe02244b8fd3962ba61_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\70f992e73d440fe02244b8fd3962ba61_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2660
        • C:\Users\Admin\AppData\Local\Temp\70f992e73d440fe02244b8fd3962ba61_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\70f992e73d440fe02244b8fd3962ba61_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2992

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

    74a094345499dab68b07ca3117dbc871

    SHA1

    ce36d0017ce882a13ec2e37d1b3911a1a64e8c90

    SHA256

    1eae449f6c9a70e5a12fc1f58a652d63be540280053136099992c72c6e60e9d1

    SHA512

    86ca233284022416fff47d60d9b866f8d16ebe54e088dc972fdcd65d911ff47c093e7351e432d07d434eeb04377ed4c84c640cf567611b7fbbe671ed6578fbd2

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

    Filesize

    170B

    MD5

    48feb32259c3c6766ef2f66de099e0ec

    SHA1

    d0a9fdd4bd754a99982f47509d89a407cba9d4a5

    SHA256

    47a90888d28de163f816043724cb0db76b452b0d18ba97ef90154237c0ba6403

    SHA512

    86c82bf39dedccecb84111fcfd84791c48c152854ae41d7035dd259f9109b509341852203fd657059ca42a3142735ebb6a6486303d8dcaad367bb9b878a5ff6c

  • C:\Users\Admin\AppData\Local\18c42105-0d01-4451-bd08-68e37032409d\70f992e73d440fe02244b8fd3962ba61_JaffaCakes118.exe

    Filesize

    810KB

    MD5

    70f992e73d440fe02244b8fd3962ba61

    SHA1

    1100fd25b820c64613dd16f8cbf16e9c54cc1287

    SHA256

    5482bcb0f258027740ffc73b7dba78273bf6a11971152a6354b01db1eb2e6290

    SHA512

    483d5a51bbc75baefe102d4901ebfbae1ef98c4ca0a78656293d9ca53bbdeee58d084a386b783bbfcf86b867ee4e790d5740024f6cffb9e26e76d6c6ec0e0c88

  • C:\Users\Admin\AppData\Local\Temp\Cab277E.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • memory/1708-6-0x00000000004E0000-0x0000000000572000-memory.dmp

    Filesize

    584KB

  • memory/1708-5-0x0000000000650000-0x000000000076B000-memory.dmp

    Filesize

    1.1MB

  • memory/1708-0-0x00000000004E0000-0x0000000000572000-memory.dmp

    Filesize

    584KB

  • memory/1708-1-0x00000000004E0000-0x0000000000572000-memory.dmp

    Filesize

    584KB

  • memory/1748-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1748-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1748-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1748-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1748-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2660-27-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/2660-28-0x0000000000400000-0x00000000004D8000-memory.dmp

    Filesize

    864KB

  • memory/2660-32-0x0000000000400000-0x00000000004D8000-memory.dmp

    Filesize

    864KB

  • memory/2992-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-57-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB