Analysis

  • max time kernel
    142s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    14-08-2024 01:29

General

  • Target

    f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4.exe

  • Size

    758KB

  • MD5

    8f81e96f8c96dec003b51826bbd5885f

  • SHA1

    7b8c4ec9a3808eaa32ab07d1608ad275f34adbe3

  • SHA256

    f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4

  • SHA512

    8770f01b013e401a3eef992aa53e7623a0367bf857309fa238781f70f44ef3e1e5697751d2a28b7ff1f35e8fad921b3fbfeb17f3c9724fab786934c8eb8ee8ce

  • SSDEEP

    12288:VI/X+roiofZzZXvGasEKcXm/WThCFrUi/bwV5LYBYH7caEArXMViC53j:gOsiorGLEKT/WThUlbaUYH7lE005

Malware Config

Extracted

Family

djvu

C2

http://securebiz.org/fhsgtsspen6/get.php

Attributes
  • extension

    .rigd

  • offline_id

    gigF2ELYocnMQz77LhEpSoXvtYp2junk9HZFtJt1

  • payload_url

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

    http://securebiz.org/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-2zbBkO06mv 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: 0335gSd743d

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 16 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4.exe
    "C:\Users\Admin\AppData\Local\Temp\f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1644
    • C:\Users\Admin\AppData\Local\Temp\f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4.exe
      "C:\Users\Admin\AppData\Local\Temp\f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2316
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c080a6ba-5783-4b46-9219-0ec7055082f7" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2832
      • C:\Users\Admin\AppData\Local\Temp\f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4.exe
        "C:\Users\Admin\AppData\Local\Temp\f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1924
        • C:\Users\Admin\AppData\Local\Temp\f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4.exe
          "C:\Users\Admin\AppData\Local\Temp\f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:3020

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

    838443227950359475b9e9d24bfe0b82

    SHA1

    ed736f58540d2e6dba830362a2877bc2cfba5bd1

    SHA256

    6e500a99099c96dc5a5edf91deb28387a21e4c9c15f5c09d88c5bec9199e6ea3

    SHA512

    06a3947f09f8dbe6601318daaefcd5cc4609330a97d7b9afb63519278d9f12162333ce99d96f8ef8ce37c0f90ba4ef30efd740bcc3aefd10ffd05db5d15820d1

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

    Filesize

    342B

    MD5

    870a2be48b872cb66fae0af4c71906c8

    SHA1

    01d4de681e6de781a8c8049cbef0b5e7ee1e49de

    SHA256

    16c44621ac10254396fe4632d81d0bd6e60d46999baf4e535243d95a5aa43017

    SHA512

    e8d3eb75441ebeab9b71ae8b749d7c5b750b491065ca8ba75557a0df7a018323508411b5324442b153e1bb7dd8c1ad21b6b577194e77cf2d79063adb5f3fb4f9

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

    Filesize

    170B

    MD5

    d702d64661b39f0fe0d227cb4f6aa011

    SHA1

    8ea280877a86eb4114edc5f8f810fc597787cd9d

    SHA256

    c40e840bb24bfdd29af2a656b02153597d005f76ad4288a61991fe8727fde02d

    SHA512

    b5e51ce42b8d0b384f6725be42f524fadf94728c29e22391415adf2ea01f97c776cc32ec3739bd76663eccba8cdcc0f78854afb7da9a5fb1f75792b3ee969f60

  • C:\Users\Admin\AppData\Local\Temp\CabB7F9.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\c080a6ba-5783-4b46-9219-0ec7055082f7\f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4.exe

    Filesize

    758KB

    MD5

    8f81e96f8c96dec003b51826bbd5885f

    SHA1

    7b8c4ec9a3808eaa32ab07d1608ad275f34adbe3

    SHA256

    f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4

    SHA512

    8770f01b013e401a3eef992aa53e7623a0367bf857309fa238781f70f44ef3e1e5697751d2a28b7ff1f35e8fad921b3fbfeb17f3c9724fab786934c8eb8ee8ce

  • memory/1644-56-0x0000000000A70000-0x0000000000B8B000-memory.dmp

    Filesize

    1.1MB

  • memory/1644-0-0x00000000002B0000-0x0000000000341000-memory.dmp

    Filesize

    580KB

  • memory/1644-1-0x00000000002B0000-0x0000000000341000-memory.dmp

    Filesize

    580KB

  • memory/1644-5-0x0000000000A70000-0x0000000000B8B000-memory.dmp

    Filesize

    1.1MB

  • memory/1924-57-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/1924-37-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/1924-31-0x00000000008F0000-0x0000000000981000-memory.dmp

    Filesize

    580KB

  • memory/2316-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2316-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2316-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2316-7-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2316-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-65-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-59-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-63-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-64-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-61-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB