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Analysis

  • max time kernel
    140s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    07/12/2024, 11:03

General

  • Target

    d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe

  • Size

    772KB

  • MD5

    d21f65241584fd09a7f08c52f4082386

  • SHA1

    1eea24e7cd60eae916f6f9fc06f028c9f337786b

  • SHA256

    08f290d886e67c9aaa4cf058fa166e50efc8181901773373c2123e5290edab71

  • SHA512

    d6643cbef2249dbb53558c06f4b3634335dc02d19f07b39555057603e5e6d8b39f4ed46b37f6de751e0d8d4cb6af26b47fe1404e40b094ff3f58479d504d3a1a

  • SSDEEP

    24576:msddGiC4GqIG0dBtNtW95xhFvVBLB4YzZN9:ms/Msy7tyhFv3LbZ

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\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2772
    • C:\Users\Admin\AppData\Local\Temp\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2788
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c484c19d-71a7-4c07-9cd2-4f85246e7441" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3024
      • C:\Users\Admin\AppData\Local\Temp\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2356
        • C:\Users\Admin\AppData\Local\Temp\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1048
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {F312271D-D7C2-4D25-9B44-6AE287FB090D} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3000
    • C:\Users\Admin\AppData\Local\c484c19d-71a7-4c07-9cd2-4f85246e7441\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\c484c19d-71a7-4c07-9cd2-4f85246e7441\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe --Task
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2432
      • C:\Users\Admin\AppData\Local\c484c19d-71a7-4c07-9cd2-4f85246e7441\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe
        C:\Users\Admin\AppData\Local\c484c19d-71a7-4c07-9cd2-4f85246e7441\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe --Task
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:2476

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

    d1cde989b0580a9fa1114766e0ac7863

    SHA1

    edabd79c1c98c5f3475ea0761cef8c6ae4f124c8

    SHA256

    e6b6566d8316795442c34a3d3c2bada127a71a867d10411c4acffaa5712a837c

    SHA512

    aa2bfdce9d1806484c241aac17469faed7b21560aa41d49ddcb836895ce080069ff5955744f609570f02ecee02c62ece29aec415eaf725baaa16fe5f75487f42

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

    Filesize

    342B

    MD5

    8a129804d1af8d9c06efe58de8fa5705

    SHA1

    ce29997c3267a0ae2d482664112451e19152d27b

    SHA256

    182ab7e6e655fe878887ba761aaef69b37f9e893965193bde643f95ad4d045f7

    SHA512

    67da83712d10defdfc8878cfb95f2b2b6b83a6b83296b3fb6a03e905dad32972ec18e7d3bc256ee84f7feaeec19811d853af8ec37a2a850d6f2639776e1353ec

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

    Filesize

    170B

    MD5

    9f6d73eac6545b3eee1d94b708c98d15

    SHA1

    66094cb5a95d8675450420e0318ff36073ede78a

    SHA256

    116259449cc395e69e6a7ace3eabd18f29edb883c74764de1501a4b88ed6c187

    SHA512

    a1cc684f0ed43a08d6e3cf2304f00df568d8251563e2ae06ddca31e0ea51fbe5790803971da18396b25fd7e16e1b76a728b1b303f0ae78f70896a521e98486a7

  • C:\Users\Admin\AppData\Local\Temp\Cab1C57.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\TarF24C.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Local\c484c19d-71a7-4c07-9cd2-4f85246e7441\d21f65241584fd09a7f08c52f4082386_JaffaCakes118.exe

    Filesize

    772KB

    MD5

    d21f65241584fd09a7f08c52f4082386

    SHA1

    1eea24e7cd60eae916f6f9fc06f028c9f337786b

    SHA256

    08f290d886e67c9aaa4cf058fa166e50efc8181901773373c2123e5290edab71

    SHA512

    d6643cbef2249dbb53558c06f4b3634335dc02d19f07b39555057603e5e6d8b39f4ed46b37f6de751e0d8d4cb6af26b47fe1404e40b094ff3f58479d504d3a1a

  • memory/1048-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1048-58-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1048-59-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1048-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1048-57-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1048-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1048-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1048-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1048-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2356-31-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/2432-72-0x0000000002D00000-0x0000000002D92000-memory.dmp

    Filesize

    584KB

  • memory/2476-89-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2772-2-0x0000000004600000-0x000000000471B000-memory.dmp

    Filesize

    1.1MB

  • memory/2772-7-0x00000000002E0000-0x0000000000372000-memory.dmp

    Filesize

    584KB

  • memory/2772-0-0x00000000002E0000-0x0000000000372000-memory.dmp

    Filesize

    584KB

  • memory/2772-1-0x00000000002E0000-0x0000000000372000-memory.dmp

    Filesize

    584KB

  • memory/2788-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2788-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2788-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2788-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2788-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB