Analysis

  • max time kernel
    146s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    20-08-2024 11:30

General

  • Target

    af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe

  • Size

    812KB

  • MD5

    af0b8f5af76165683f16c178e20703f0

  • SHA1

    9d6e0772131c0a338caa0458e59b9e66f6ee1e2c

  • SHA256

    22ed8ba56c9a195d2f2b50133b9ba06e6cc0705fd3003cd76c2717547443f3d4

  • SHA512

    99010c90cf3d71d1577724f3726a90d03e49595f7b32d7daf50ff076bd712d383c34639a28ab3c49c45e468ee4cbc186ba39b28806ab74c9f3705b376dcdf03a

  • SSDEEP

    24576:9r33kKHXw2x9eo20ZcWB7kHkIreRbLd6:9LkKgo1Z/BIEIr2

Malware Config

Extracted

Family

djvu

C2

http://cjto.top/nddddhsspen6/get.php

Attributes
  • extension

    .copa

  • offline_id

    5sHsKew2XYnEguRaSVYIA8rudOB16MVLvPgGIOt1

  • payload_url

    http://cjto.top/files/penelop/updatewin1.exe

    http://cjto.top/files/penelop/updatewin2.exe

    http://cjto.top/files/penelop/updatewin.exe

    http://cjto.top/files/penelop/3.exe

    http://cjto.top/files/penelop/4.exe

    http://cjto.top/files/penelop/5.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-NYlGSMNN9r 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: 0253Ijrfg

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 12 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Executes dropped EXE 1 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 4 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 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2420
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\fec2c8fc-e17a-4ebf-8277-d6d11332ff24" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:2860
    • C:\Users\Admin\AppData\Local\Temp\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:2144
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {A0257415-48E4-44FC-A6E0-06F68E82C6B9} S-1-5-21-3450744190-3404161390-554719085-1000:PDIZKVQX\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:900
    • C:\Users\Admin\AppData\Local\fec2c8fc-e17a-4ebf-8277-d6d11332ff24\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\fec2c8fc-e17a-4ebf-8277-d6d11332ff24\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe --Task
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1620

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

    382dbe073097747a8a863c674b5b2f45

    SHA1

    9afe64570042f16b0086736d9e1e425dc7a14c57

    SHA256

    99cc1eeffc171852a900eed11efa82920e48d89aab80755b8b8f3370814749e1

    SHA512

    66ba4e523438177316eb419d0ec499b9622e343b07729c6880c9eea52604d7ad75a8aae8429c80bacfab75b097f126e74a4c7c5d4345b3decc096c540764eeab

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

    Filesize

    170B

    MD5

    f38bdc71ceffe8171944db9ae22f4110

    SHA1

    5113e7ebee9e8100523cd5febe1b2df39ecc991d

    SHA256

    0f61dad3aeeadb2c5e165df6744aa09de6178ac0e2ea1f4a508b83f27965ea15

    SHA512

    0eadf8021efe63ad1966938eec03373a495b36cdd529cb3f1931a7b020635bd64ba9b56de9b8ede6e99771a8e279acf894486135cb0844215b76b902464fffed

  • C:\Users\Admin\AppData\Local\Temp\CabD308.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\TarA2A6.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Local\fec2c8fc-e17a-4ebf-8277-d6d11332ff24\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe

    Filesize

    812KB

    MD5

    af0b8f5af76165683f16c178e20703f0

    SHA1

    9d6e0772131c0a338caa0458e59b9e66f6ee1e2c

    SHA256

    22ed8ba56c9a195d2f2b50133b9ba06e6cc0705fd3003cd76c2717547443f3d4

    SHA512

    99010c90cf3d71d1577724f3726a90d03e49595f7b32d7daf50ff076bd712d383c34639a28ab3c49c45e468ee4cbc186ba39b28806ab74c9f3705b376dcdf03a

  • memory/1620-84-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/1620-67-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/1620-64-0x0000000000CD0000-0x0000000000D61000-memory.dmp

    Filesize

    580KB

  • memory/1620-63-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/2144-46-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/2144-29-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2144-30-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/2144-31-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/2144-28-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/2144-51-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/2144-49-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/2420-45-0x0000000004790000-0x000000000505B000-memory.dmp

    Filesize

    8.8MB

  • memory/2420-27-0x0000000004790000-0x000000000505B000-memory.dmp

    Filesize

    8.8MB

  • memory/2420-25-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2420-0-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/2420-24-0x0000000000CD0000-0x0000000000DEA000-memory.dmp

    Filesize

    1.1MB

  • memory/2420-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-23-0x0000000000400000-0x0000000000CCB000-memory.dmp

    Filesize

    8.8MB

  • memory/2420-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2420-3-0x0000000000CD0000-0x0000000000DEA000-memory.dmp

    Filesize

    1.1MB

  • memory/2420-2-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2420-1-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB