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Analysis

  • max time kernel
    142s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    08/12/2024, 02:49

General

  • Target

    d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe

  • Size

    771KB

  • MD5

    d4e3e0320449bc147fbced0ced1858b2

  • SHA1

    483094f2ed0d4117f77fb8eb63defb229ef02881

  • SHA256

    a5f59422afd97955873308617220c56369a9a47b65ae39f12805df2d0999a803

  • SHA512

    8775b0e181cb7e96a66956ae67e9078d4a7e8eed2f2bfe9c20760ca6ce8750761d2c0730f42a09f583b4e94176d37ccaa4042ee3015a04ed861631796cc580a4

  • SSDEEP

    24576:BsbiyzJNq7kEJIWlZkL/4qu5mDYZxRTL9:BsddN6kEeYZq5u5zZ

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 15 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\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2440
    • C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2852
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6064a80b-2cf2-41e4-8321-2e64b40ab050" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2876
      • C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3012
        • C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2420
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {CB5E6E32-761D-44A2-8089-C35D33D1B5C8} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1504
    • C:\Users\Admin\AppData\Local\6064a80b-2cf2-41e4-8321-2e64b40ab050\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\6064a80b-2cf2-41e4-8321-2e64b40ab050\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe --Task
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1988
      • C:\Users\Admin\AppData\Local\6064a80b-2cf2-41e4-8321-2e64b40ab050\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
        C:\Users\Admin\AppData\Local\6064a80b-2cf2-41e4-8321-2e64b40ab050\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe --Task
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:2256

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

    95ba5538bf24eed35a5c252c64df5ccd

    SHA1

    c7b23ea09468791c4bb7c6d79f6c745f212a5ef6

    SHA256

    a611bc436d001b58e494473f598708c1979be63f5d593add0d96df125925507c

    SHA512

    6321724e214c1f1abc6377b4a36532e048210d1e5c2666dc9131cc6cb30a97daaab25bd26d54b73a4d0c2125c3ca756a3a6271386df247170d2d332648e2d275

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    8151b275a4755f2a704a484265935c0a

    SHA1

    de90589b634a7fae263d5851441b0c2ad26ee6b1

    SHA256

    9b3d4920ad60a8975e6e2158654341a3d2d3ffbd2a51b0b2d117addc7f262955

    SHA512

    4c998c17a7ed04ce70f40ce1d5708de8b004ec7875451274d7db580db7c664626ab789ca92f51da479d88f3c1fc2ba98d38d04d371cc7f2806077498f30eec60

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

    Filesize

    170B

    MD5

    2c8ea1d847299b33a583399cad8641d7

    SHA1

    96089263b1e10e9876abd7103aa124d313ca871e

    SHA256

    ccf370ab320c7e755c3f812e5a53b8f198e36a0d75db8f056dfdb6c96bae3a73

    SHA512

    72cd1dc7617f23bb4dace2cc9af7e669e957330adfff1b0670e9f37eb6a9e406f8f4ebbd822748188115a1fb8e01e0af2a98f6cd28d6a46d8bc3fc0370bb8e8f

  • C:\Users\Admin\AppData\Local\6064a80b-2cf2-41e4-8321-2e64b40ab050\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe

    Filesize

    771KB

    MD5

    d4e3e0320449bc147fbced0ced1858b2

    SHA1

    483094f2ed0d4117f77fb8eb63defb229ef02881

    SHA256

    a5f59422afd97955873308617220c56369a9a47b65ae39f12805df2d0999a803

    SHA512

    8775b0e181cb7e96a66956ae67e9078d4a7e8eed2f2bfe9c20760ca6ce8750761d2c0730f42a09f583b4e94176d37ccaa4042ee3015a04ed861631796cc580a4

  • C:\Users\Admin\AppData\Local\Temp\Cab8076.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar57A3.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/1988-73-0x00000000002D0000-0x0000000000361000-memory.dmp

    Filesize

    580KB

  • memory/2256-90-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-58-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-57-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-60-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-59-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2440-6-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2440-0-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2440-2-0x0000000004550000-0x000000000466B000-memory.dmp

    Filesize

    1.1MB

  • memory/2440-1-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2852-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2852-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2852-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2852-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2852-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3012-31-0x0000000002D00000-0x0000000002D91000-memory.dmp

    Filesize

    580KB