Analysis

  • max time kernel
    143s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    13-10-2024 18:39

General

  • Target

    4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe

  • Size

    832KB

  • MD5

    4173146820be8f17a7e9844eb5ece68e

  • SHA1

    fb3d4d36f0cfa19c30bb45459aec670168122a6f

  • SHA256

    79fed2e5e69917f98a8b508a772a6bd95a3f0ab84d27998e9e23f66db1aae06f

  • SHA512

    3abf44530e68c51415ad75afcd391bb5fb272671718a799b86b99226bb124a6c86ccfd087b4bb477f4425ff50d66abdf0cb562cced914030b9b853b44810f999

  • SSDEEP

    24576:HGZEEavMjfaZpl08b0PJzxWugguPodMdu95nuH:m4vMjfgpSNPJzCLPeMdGn

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.

  • 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\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2980
    • C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1140
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\5481170a-70fb-46fe-9dfc-87cfd34ffcab" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2168
      • C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2920
        • C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2624
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {E3E89A31-7ACE-4311-9743-805816D8366B} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:860
    • C:\Users\Admin\AppData\Local\5481170a-70fb-46fe-9dfc-87cfd34ffcab\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\5481170a-70fb-46fe-9dfc-87cfd34ffcab\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe --Task
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1752
      • C:\Users\Admin\AppData\Local\5481170a-70fb-46fe-9dfc-87cfd34ffcab\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
        C:\Users\Admin\AppData\Local\5481170a-70fb-46fe-9dfc-87cfd34ffcab\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe --Task
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1164

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

    01d9e9c4b8dbee5036764dfe77321d28

    SHA1

    f06362b202c378c0ce9aa87774d0517593d85ac0

    SHA256

    72a69b0907b757601d7403be9b676022532736196a410f4dbd211d260c326c4a

    SHA512

    a270a2687d89f25370f40003df503bc8d0e4373612bfc438cdfaac8e611e782f1478957eaa381c6d36cc50464dffb612113248be318facd67727a124f005e79b

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

    Filesize

    342B

    MD5

    d88f632e8eb40876a83201d0235204f0

    SHA1

    ccb9ea79b8d3554fdf5aeb276da35c41d8fb698b

    SHA256

    49ad0d01b77048b4f65b9871a1466e9fbd47699fdcbad1705f1829c2f7f4c5ec

    SHA512

    5b6404acc1076a1836218b668eac2ddedbfef9828f36d324dcc43da3114bbb37a25942ddaa9e5b52a468df2a8f91689eaf50aa3b455a6d8f971d4b5c8a068cbf

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

    Filesize

    170B

    MD5

    9b1f231a618a4b552c89933d59ea45c8

    SHA1

    5ae3e3c3a73179ee595ffdcbcb936a21deb2fbaa

    SHA256

    18bfd6f5241df93f67e69af241a4839630e23af069ff35731b304103b50ec855

    SHA512

    88f53fec65ab51b7c43bbf2dec4a5b667524ef4234d9a5599b6c7eaf107f213476d5803ca8f3570f714380c5fcba043a9b0c038b330187bf13279f0037c63fc0

  • C:\Users\Admin\AppData\Local\5481170a-70fb-46fe-9dfc-87cfd34ffcab\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe

    Filesize

    832KB

    MD5

    4173146820be8f17a7e9844eb5ece68e

    SHA1

    fb3d4d36f0cfa19c30bb45459aec670168122a6f

    SHA256

    79fed2e5e69917f98a8b508a772a6bd95a3f0ab84d27998e9e23f66db1aae06f

    SHA512

    3abf44530e68c51415ad75afcd391bb5fb272671718a799b86b99226bb124a6c86ccfd087b4bb477f4425ff50d66abdf0cb562cced914030b9b853b44810f999

  • C:\Users\Admin\AppData\Local\Temp\Cab8A36.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar6308.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/1140-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1140-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1140-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1140-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1140-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1164-94-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1752-78-0x0000000000990000-0x0000000000A21000-memory.dmp

    Filesize

    580KB

  • memory/2624-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-64-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-62-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-61-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-59-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-63-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2920-38-0x0000000000400000-0x0000000000987000-memory.dmp

    Filesize

    5.5MB

  • memory/2920-32-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2980-0-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2980-2-0x0000000000990000-0x0000000000AAB000-memory.dmp

    Filesize

    1.1MB

  • memory/2980-1-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2980-7-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB