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
    06-12-2024 13:02

General

  • Target

    cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe

  • Size

    772KB

  • MD5

    cd220a082a015e31b48905223ae4d90e

  • SHA1

    4763eb2dcdf87d07dd18e176e21e3a676aa79bf4

  • SHA256

    cc2d59e5fe1823c860fa7b4996f8b5be24bbc4da15b757ea477ef3864031fac1

  • SHA512

    d53fec6f9418e38f511afa61e2c54641a8fa51960f58293a47e226f6c938de2e1d4f3338a18e11f65da338f859a217b42fc1ce1d783acd116f5efb8fe354716b

  • SSDEEP

    12288:ysbay2bWS7Njlewp2ibfsI4/nX/tE59zXgWwfgLoS1F2K2EglvP8j9C5DY:ysbaLb33Tp2w0RntgzyoV/2EQvw9

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\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2548
    • C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1996
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\336f5b8c-993c-47b0-b162-b3b2010aa8a2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2764
      • C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2836
        • C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2628
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {1B9B40F8-DCF0-42CB-BAB1-BB5356855069} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2080
    • C:\Users\Admin\AppData\Local\336f5b8c-993c-47b0-b162-b3b2010aa8a2\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\336f5b8c-993c-47b0-b162-b3b2010aa8a2\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe --Task
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2376
      • C:\Users\Admin\AppData\Local\336f5b8c-993c-47b0-b162-b3b2010aa8a2\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe
        C:\Users\Admin\AppData\Local\336f5b8c-993c-47b0-b162-b3b2010aa8a2\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe --Task
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:2952

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

    065b85ce25eff489f03b045d6c5ef463

    SHA1

    fd710095db6d5b74709a2df6cc82fc56b7596ded

    SHA256

    a92d4b1a4ec4ab58dae19d98f324160055dd0d0b9b93a3556e316f2fbd52ae0d

    SHA512

    9c3415425e87357116f043abe004f41048c398ccf42091738bbcec88eec7a0096b0d03d9320fdc2d269874a510826b57b97c29b0cf7b9b6de55db3adc6b8352b

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

    Filesize

    342B

    MD5

    e7927896c450d20487265c01aad678d3

    SHA1

    af1f3390a85a1ce89f26213b020539f882208204

    SHA256

    9cbf3e445e6064a11ac3913e0c2d635cd69dca55880a9bdf9f5d7b5a30f24724

    SHA512

    9b774b72f6687cd7b5b5423a74ba77ed72e3c28045566c47b158cd8760145ff1846d0eeb4e962b82ba62d82c424a94f9454efa44d7ce7f2f577a1a648d415b74

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

    Filesize

    170B

    MD5

    9c1201deb89a6e997479373416616795

    SHA1

    d4f50a0750bceb4fd1ee37971484ca720ce1d980

    SHA256

    876856055eaa64541af5f7b9600eb42b2a7b55a515d6a5e1fef2e285ae3e8d93

    SHA512

    bdd34d2a7368952e90cbc62bcc89ff8597febc616ea9751481786d270ca5e13d60cff8e10059a4a3ea8306d5f250c354ce6e946af7b689b68a127b89de4a2c8b

  • C:\Users\Admin\AppData\Local\336f5b8c-993c-47b0-b162-b3b2010aa8a2\cd220a082a015e31b48905223ae4d90e_JaffaCakes118.exe

    Filesize

    772KB

    MD5

    cd220a082a015e31b48905223ae4d90e

    SHA1

    4763eb2dcdf87d07dd18e176e21e3a676aa79bf4

    SHA256

    cc2d59e5fe1823c860fa7b4996f8b5be24bbc4da15b757ea477ef3864031fac1

    SHA512

    d53fec6f9418e38f511afa61e2c54641a8fa51960f58293a47e226f6c938de2e1d4f3338a18e11f65da338f859a217b42fc1ce1d783acd116f5efb8fe354716b

  • C:\Users\Admin\AppData\Local\Temp\CabE705.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\TarBDE4.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/1996-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1996-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1996-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1996-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1996-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2376-73-0x0000000002D00000-0x0000000002D92000-memory.dmp

    Filesize

    584KB

  • memory/2548-1-0x0000000002D00000-0x0000000002D92000-memory.dmp

    Filesize

    584KB

  • memory/2548-0-0x0000000002D00000-0x0000000002D92000-memory.dmp

    Filesize

    584KB

  • memory/2548-7-0x0000000002D00000-0x0000000002D92000-memory.dmp

    Filesize

    584KB

  • memory/2548-2-0x0000000004590000-0x00000000046AB000-memory.dmp

    Filesize

    1.1MB

  • memory/2628-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-58-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-57-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-59-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-60-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2628-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2836-32-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/2952-90-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB