Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    16-05-2022 01:51

General

  • Target

    f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2.exe

  • Size

    745KB

  • MD5

    ea5f9e5a6230afdf746ca66d73a562fe

  • SHA1

    e87f7c58123d206c0b2d6bbff53a776672337624

  • SHA256

    f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2

  • SHA512

    f24dc06251bf035973737fee95bedb976ce0eaa0e671a02e364de5d5ea6584b00685aef1466dd1baebc4a74823ae69dc58f01a42a3b5015a02eab8066d61ccdc

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .ogdo

  • offline_id

    XIyyRCNH8lJ6pGHLNnQPCMfabY9p3AQCEQc3Lnt1

  • 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-SY0GqQtRAT 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: 0250riuyfgh

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 4 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • suricata: ET MALWARE APT-C-23 Activity (GET)

    suricata: ET MALWARE APT-C-23 Activity (GET)

  • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

  • suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

    suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

  • 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 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). Likely ransomware behaviour.

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2.exe
    "C:\Users\Admin\AppData\Local\Temp\f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2.exe"
    1⤵
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1528
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\bdd485ec-7f45-45b4-9abb-e13825cd571f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      PID:572
    • C:\Users\Admin\AppData\Local\Temp\f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2.exe
      "C:\Users\Admin\AppData\Local\Temp\f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:844
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {FBABAFAC-3D62-4990-A988-6A5AE81FF7C1} S-1-5-21-2277218442-1199762539-2004043321-1000:AUVQQRRF\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1772
    • C:\Users\Admin\AppData\Local\bdd485ec-7f45-45b4-9abb-e13825cd571f\f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2.exe
      C:\Users\Admin\AppData\Local\bdd485ec-7f45-45b4-9abb-e13825cd571f\f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2.exe --Task
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:940

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    727B

    MD5

    8ae6f45bb6c9f288a96a3402dc17e2d9

    SHA1

    9ddb0d782cb4728675a1f5b61cfc632997349cdf

    SHA256

    ae4681e5db7de9744bdd78a943d6be6a390aa925125935d6cb691a27c8b2ebd3

    SHA512

    ee94f18f21437c1fba42cca69d535997c89438801ea6e823e99d384e9bc0239b041dc5ed854063a571bac2bbd2f83d7113c7f456d130b15e7db847e7fe4e8ec7

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

    Filesize

    60KB

    MD5

    b9f21d8db36e88831e5352bb82c438b3

    SHA1

    4a3c330954f9f65a2f5fd7e55800e46ce228a3e2

    SHA256

    998e0209690a48ed33b79af30fc13851e3e3416bed97e3679b6030c10cab361e

    SHA512

    d4a2ac7c14227fbaf8b532398fb69053f0a0d913273f6917027c8cadbba80113fdbec20c2a7eb31b7bb57c99f9fdeccf8576be5f39346d8b564fc72fb1699476

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    471B

    MD5

    b1c4234d2346ca5a2267de9f0bab4b81

    SHA1

    d6d10976b258ee86430063fdfb1838bb73838aeb

    SHA256

    e75d5e79323e42e337cf188a296db211f5d7dd488d03adf4b1be7836f997e3ed

    SHA512

    8b1d4c34ad847b73d060cb35dba350032be0a8cd82637a5c52805c078ea986ea44446040f588fb4edda4a233e424bdb6dc3ba016b7647936ec4ef4f971ff1e17

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    402B

    MD5

    9e8439ebc4adcb91ed8621897735ec45

    SHA1

    47aa52c1e6000a79e423ace9c89da4dc219abd2c

    SHA256

    695d0c44edbb9dc3cecd0c7bd0278e0a0c00899fe95403fff6efcc0ac5d14ba7

    SHA512

    96b2b8a516a64fd81187a64584259d757b21df4912c852a83d6e6ae2bb839a974f641268e6d58ddd58d71981d78b55adffcfd1953d31934d493a28895a489465

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

    Filesize

    344B

    MD5

    e07a95359dd3f5499adafb00997675fe

    SHA1

    c48e28b0c209e9aaf7fd424beff1d9d3fcc03d7c

    SHA256

    462d46ff45610aef11a3e2f8726129294de0afcb2c6cdd42aa06d54fd22058ea

    SHA512

    db63b17ddecc7407ccf3aa766c85bffd9b0c4433b32d9ef59b55c178e5099e1a4d2dab8b16decc8333b7dd14c349df0644ebf8012f1e30c4514a243633649824

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    396B

    MD5

    cf55a1d105119580257dff9c5aa49ca5

    SHA1

    d55e781d0618d5a75e2eae8f259bb52d454a73d4

    SHA256

    5080e48336278b5f8a0d6943cfb2534824fb639e077f60e7ba8b5ff5403f626f

    SHA512

    42a3ced9fe36c5928bf23e6be7ae04c6ec3c09d56f28114f1769a0082ca0ebbbdfa5e30deafb6231147cdca5f0626e70ae13ce6a61b12cbfcc1d939b7bc75661

  • C:\Users\Admin\AppData\Local\bdd485ec-7f45-45b4-9abb-e13825cd571f\f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2.exe

    Filesize

    745KB

    MD5

    ea5f9e5a6230afdf746ca66d73a562fe

    SHA1

    e87f7c58123d206c0b2d6bbff53a776672337624

    SHA256

    f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2

    SHA512

    f24dc06251bf035973737fee95bedb976ce0eaa0e671a02e364de5d5ea6584b00685aef1466dd1baebc4a74823ae69dc58f01a42a3b5015a02eab8066d61ccdc

  • C:\Users\Admin\AppData\Local\bdd485ec-7f45-45b4-9abb-e13825cd571f\f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2.exe

    Filesize

    745KB

    MD5

    ea5f9e5a6230afdf746ca66d73a562fe

    SHA1

    e87f7c58123d206c0b2d6bbff53a776672337624

    SHA256

    f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2

    SHA512

    f24dc06251bf035973737fee95bedb976ce0eaa0e671a02e364de5d5ea6584b00685aef1466dd1baebc4a74823ae69dc58f01a42a3b5015a02eab8066d61ccdc

  • memory/572-59-0x0000000000000000-mapping.dmp

  • memory/844-70-0x0000000000A90000-0x0000000000B21000-memory.dmp

    Filesize

    580KB

  • memory/844-61-0x0000000000000000-mapping.dmp

  • memory/844-62-0x0000000000A90000-0x0000000000B21000-memory.dmp

    Filesize

    580KB

  • memory/844-71-0x0000000000400000-0x0000000000A0A000-memory.dmp

    Filesize

    6.0MB

  • memory/940-72-0x0000000000000000-mapping.dmp

  • memory/940-74-0x0000000000A80000-0x0000000000B11000-memory.dmp

    Filesize

    580KB

  • memory/940-76-0x0000000000A80000-0x0000000000B11000-memory.dmp

    Filesize

    580KB

  • memory/940-77-0x0000000000400000-0x0000000000A0A000-memory.dmp

    Filesize

    6.0MB

  • memory/1528-56-0x0000000000290000-0x0000000000321000-memory.dmp

    Filesize

    580KB

  • memory/1528-57-0x0000000000A10000-0x0000000000B2A000-memory.dmp

    Filesize

    1.1MB

  • memory/1528-58-0x0000000000400000-0x0000000000A0A000-memory.dmp

    Filesize

    6.0MB

  • memory/1528-55-0x0000000075C51000-0x0000000075C53000-memory.dmp

    Filesize

    8KB

  • memory/1528-54-0x0000000000290000-0x0000000000321000-memory.dmp

    Filesize

    580KB