Analysis

  • max time kernel
    148s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2024 18:04

General

  • Target

    b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe

  • Size

    831KB

  • MD5

    b2f294347754b834dfa0798a7f80dc89

  • SHA1

    a62a785570f2302af02fa981a279afcb371c7d49

  • SHA256

    f911d9fe94c6aa35874faa758432168c6846c24b010e8f351f874ac6830c2a2d

  • SHA512

    4e5195423198d4ea5f1742e9ded4598153a1a40ae1df65796cd457c75ffdeb433cebf85d6fcc5b527d2d2409487104386ad6073e071e6843d712f05c114a265d

  • SSDEEP

    24576:htVEx77FqKymt0pA+zuk4Bce6nonkZI98UWcPUIX:vk7FcmwA+zF4WXoR98A

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 16 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu family
  • 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 6 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2236
    • C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2208
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2744
      • C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2736
        • C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2800
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {CA45AAD3-AC53-4206-8CB7-C8B601F834F3} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1680
    • C:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe --Task
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3048
      • C:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
        C:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe --Task
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1032

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

    31165b50b4da0329a596e0712926f6b9

    SHA1

    96bf61dc24277adb3e543a9e5c8db8c37f29c716

    SHA256

    fe814ae9757d2639f13a32892a8e3fa132d4a00a60f0ac73c6ba17e0351bb9d2

    SHA512

    44eecde407a2d8e928dafbdbe659c51388dedd7dd219de3f4d190387874672e414a62244a5b3163818a4e290062c9ca6a2fd295d7c0d3f3cadb5735228c45c72

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

    Filesize

    170B

    MD5

    745991e96bdd395a5422ef2ee764d56f

    SHA1

    dbe95bdef7c942b2771e8b58bd82afe9b1c11ff7

    SHA256

    1a57e4bffdfcb260a1cb5bdf20da4b1e626800012055e904e0bd2090221fd0cf

    SHA512

    c9a1eb7e06ad2549d48836598b4f5826596bae2b70b6b4d7791bfc31335ec018ac3ae104328d60118ee2b103279c1b3466e056537b2bc2a069467e8e707c3bd0

  • C:\Users\Admin\AppData\Local\Temp\CabD8A3.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\TarAF92.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe

    Filesize

    831KB

    MD5

    b2f294347754b834dfa0798a7f80dc89

    SHA1

    a62a785570f2302af02fa981a279afcb371c7d49

    SHA256

    f911d9fe94c6aa35874faa758432168c6846c24b010e8f351f874ac6830c2a2d

    SHA512

    4e5195423198d4ea5f1742e9ded4598153a1a40ae1df65796cd457c75ffdeb433cebf85d6fcc5b527d2d2409487104386ad6073e071e6843d712f05c114a265d

  • memory/1032-94-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2208-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2208-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2208-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2208-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2208-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-1-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2236-5-0x0000000000990000-0x0000000000AAB000-memory.dmp

    Filesize

    1.1MB

  • memory/2236-0-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2236-6-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2736-54-0x0000000000400000-0x0000000000986000-memory.dmp

    Filesize

    5.5MB

  • memory/2736-30-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2736-34-0x0000000000400000-0x0000000000986000-memory.dmp

    Filesize

    5.5MB

  • memory/2800-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2800-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2800-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2800-57-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2800-59-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2800-60-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2800-61-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2800-62-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2800-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2800-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3048-75-0x00000000002E0000-0x0000000000371000-memory.dmp

    Filesize

    580KB