Analysis

  • max time kernel
    141s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-07-2024 14:37

General

  • Target

    06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a.exe

  • Size

    807KB

  • MD5

    6dbbf4219ef0f8f36ddc3ca4cccc87ba

  • SHA1

    3e28977bcc084ce28666e8cb04139f2d6d3e1545

  • SHA256

    06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a

  • SHA512

    5d4ee1617f950f7096cdb7fa7ac716e1d6260a38b0430ae04a0fa339149ea6202191bae04f26f88442057982c955b0c6e9aeec0a475f8a63efefebf68ad44199

  • SSDEEP

    12288:GLCb/6Ug0ENEj9kVFrfzc0NQTljXq7+efBcNiS4t0ggvFXH9p:GLCbCUMVFrfq5ayef4iSCEXH9

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/test3/get.php

Attributes
  • extension

    .ofoq

  • offline_id

    xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://winnlinne.com/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-EWKSsSJiVn 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: 0568Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 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 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 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 4 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a.exe
    "C:\Users\Admin\AppData\Local\Temp\06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4248
    • C:\Users\Admin\AppData\Local\Temp\oFykh.exe
      C:\Users\Admin\AppData\Local\Temp\oFykh.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4772
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\41865dac.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        PID:472
    • C:\Users\Admin\AppData\Local\Temp\06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a.exe
      "C:\Users\Admin\AppData\Local\Temp\06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4632
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\43c81bc3-c724-4f16-b14c-9cb81baaf735" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:1064
      • C:\Users\Admin\AppData\Local\Temp\06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a.exe
        "C:\Users\Admin\AppData\Local\Temp\06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5040
        • C:\Users\Admin\AppData\Local\Temp\06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a.exe
          "C:\Users\Admin\AppData\Local\Temp\06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1028

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

    1bfe0a81db078ea084ff82fe545176fe

    SHA1

    50b116f578bd272922fa8eae94f7b02fd3b88384

    SHA256

    5ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f

    SHA512

    37c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    72189049a70475b2147ab41498789c9b

    SHA1

    27f47d54ef9da708506f2530f66ed51fcd741c48

    SHA256

    33f3df7cc289f5452641ea05c6853c6aaf3a16a61fc216eda43759aca096c379

    SHA512

    df42f6cfc496fd988457ad427702eff1ce766e0b6b9cb61fba8feade7bcd5eacd169cb4eb08317523e449aacf89ef152267e5656580c8cd574764a0b4e189e21

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

    Filesize

    170B

    MD5

    c04b503a1c3d2a3c63fb55a4d1524350

    SHA1

    ba24b8ebdef62927e449af83fcc7e498dbcaebf9

    SHA256

    0828e949a9f113298501c86f4361b6aff12974acd79e261e7bb2bc438b18cd8c

    SHA512

    6d13bc5153a6f0c992e9eb0fec922dabad1f5739f5fe65774ddaf53358507693248963b3b9a8b1f3e2d624cd846a8edc7ec9d71ac1f572d3a89e3b9557a06746

  • C:\Users\Admin\AppData\Local\43c81bc3-c724-4f16-b14c-9cb81baaf735\06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a.exe

    Filesize

    807KB

    MD5

    6dbbf4219ef0f8f36ddc3ca4cccc87ba

    SHA1

    3e28977bcc084ce28666e8cb04139f2d6d3e1545

    SHA256

    06388962bb9c2499117a658ac496d9bcc76e29cf560f551fef971996f037327a

    SHA512

    5d4ee1617f950f7096cdb7fa7ac716e1d6260a38b0430ae04a0fa339149ea6202191bae04f26f88442057982c955b0c6e9aeec0a475f8a63efefebf68ad44199

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\KCRJMNF7\k2[1].rar

    Filesize

    4B

    MD5

    d3b07384d113edec49eaa6238ad5ff00

    SHA1

    f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

    SHA256

    b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

    SHA512

    0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

  • C:\Users\Admin\AppData\Local\Temp\41865dac.bat

    Filesize

    185B

    MD5

    105bb76da17cc336e25e20b664b9189f

    SHA1

    5ee180eebc65d71d89376f5b25da3671bb70553f

    SHA256

    38ec6fdf06f313c1bcde67d0645a7ec660c8af3bcc5dea39195910a5ff2a5771

    SHA512

    a573494f58b10ad5a7ea956363afa4dd4329ab4183950c81bb9e615446c9e448f8834fcee58add97d3aa0c18631a1828b8f5440dc053cacdf2e625cc28d599db

  • C:\Users\Admin\AppData\Local\Temp\559B0027.exe

    Filesize

    4B

    MD5

    20879c987e2f9a916e578386d499f629

    SHA1

    c7b33ddcc42361fdb847036fc07e880b81935d5d

    SHA256

    9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

    SHA512

    bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

  • C:\Users\Admin\AppData\Local\Temp\oFykh.exe

    Filesize

    15KB

    MD5

    f7d21de5c4e81341eccd280c11ddcc9a

    SHA1

    d4e9ef10d7685d491583c6fa93ae5d9105d815bd

    SHA256

    4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

    SHA512

    e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

  • memory/1028-77-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1028-71-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1028-87-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1028-86-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1028-85-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1028-84-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1028-82-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1028-79-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1028-78-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4248-30-0x00000000021F0000-0x000000000230B000-memory.dmp

    Filesize

    1.1MB

  • memory/4248-29-0x0000000000730000-0x00000000007C8000-memory.dmp

    Filesize

    608KB

  • memory/4248-0-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/4248-34-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/4632-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4632-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4632-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4632-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4632-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4772-6-0x0000000000640000-0x0000000000649000-memory.dmp

    Filesize

    36KB

  • memory/4772-67-0x0000000000640000-0x0000000000649000-memory.dmp

    Filesize

    36KB

  • memory/5040-69-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/5040-48-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/5040-72-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB