Analysis

  • max time kernel
    82s
  • max time network
    140s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    05/12/2022, 12:17

General

  • Target

    2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364.exe

  • Size

    779KB

  • MD5

    1b49e27f89805075fd9572449ed2fdab

  • SHA1

    f5a811e69beec50f54e57992c9d31c2c96b52a2e

  • SHA256

    2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364

  • SHA512

    d24749d0dca42b6977261d837c7c1eda88a5db4b95e5ec59d7ae7d8be2fc74ff66181ea016e89c73e4a59dec17b0ec45cece4ff07527cf138578f0a5643dd3b1

  • SSDEEP

    24576:e6WejFeWZg1vDGsIDJBNJmtm4pj5gZbxnr:erejFeWZIvD09FmFs

Malware Config

Extracted

Family

djvu

C2

http://fresherlights.com/test1/get.php

Attributes
  • extension

    .mppn

  • offline_id

    d1BN9KEra4Hetg5GUH0nQZqy14sntD2NbihzGQt1

  • payload_url

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

    http://fresherlights.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-8aIWIsUQt9 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: 0612Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 10 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • 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 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). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364.exe
    "C:\Users\Admin\AppData\Local\Temp\2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2760
    • C:\Users\Admin\AppData\Local\Temp\2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364.exe
      "C:\Users\Admin\AppData\Local\Temp\2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5008
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\9807688c-7e04-4e28-b6d5-6e4375125d70" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1380
      • C:\Users\Admin\AppData\Local\Temp\2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364.exe
        "C:\Users\Admin\AppData\Local\Temp\2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4840
        • C:\Users\Admin\AppData\Local\Temp\2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364.exe
          "C:\Users\Admin\AppData\Local\Temp\2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1008
          • C:\Users\Admin\AppData\Local\e597b889-9c90-4dd4-b3e0-e2aa5549b634\build3.exe
            "C:\Users\Admin\AppData\Local\e597b889-9c90-4dd4-b3e0-e2aa5549b634\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:5044
            • C:\Windows\SysWOW64\schtasks.exe
              /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
              6⤵
              • Creates scheduled task(s)
              PID:2196
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:328
    • C:\Windows\SysWOW64\schtasks.exe
      /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
      2⤵
      • Creates scheduled task(s)
      PID:928

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    97acf0930ce9f2f69d40ed8e1178cec6

    SHA1

    6380a2d97e4b4ccc3b4598cc2d431702e54ed69c

    SHA256

    b38f02de41dbb7db433a5f440dff85432150ff71d53b7ef8792d96da80962343

    SHA512

    f49c8a4fa51127e7d8b71cd0257bbedc8855ea708ec0e313e5071b656aedb815b55e51619df24ed967c4df0e685a4940cc1f123aa4ee0198a3d1ada1b42480e1

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

    Filesize

    1KB

    MD5

    c51850a96d359a09a3a3a2249c52a92d

    SHA1

    4a4606bc3ebee0d4cf4a0f028d931945490d2665

    SHA256

    d66175ec867bee8f450f2f3ad05d9d161384241244e6d5cf791a608dd31ef175

    SHA512

    832204ccb7f74e8fd1e5f3ae2485227d94f4c5ae025695369e8affacb49307b3f2a20bac69a52d9835338bc84271cd3d1c7675f7f6a7f7a25e6f85141027dff6

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

    Filesize

    488B

    MD5

    ae9b2da0662a1388b857020ebf1094db

    SHA1

    e10d715f838279df4e8e4a7ac29dd8c1886dd622

    SHA256

    08289214e2d549f1e2ace829c0c1fc4e18a7d571879b9b127b6a57db995e3a44

    SHA512

    0a69700c8d668991d2a25af157a8b0c1d7f5845630209b48f9f5ce6e1a55e4407f9549a604ba808e6c58cbe841eab2f57a9580c9cce3fc2b545fc9f8591b33d0

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

    Filesize

    482B

    MD5

    8417e6337655cdb1062c08eba8c3cb20

    SHA1

    6572d559c7a617e3bbedd1e507a3aa31b2535f88

    SHA256

    240f7cd80e974edba8dd16d909aaa281daef249a1b0c1ed9a4cff0305a3403af

    SHA512

    be8b96ae33eda45f0e2ec04658125ac81eae7dca41d60cadf5914b66aa46f24ca8240478f077f65e9732dc6489f9b394e54499d593bbc467996b789a996a2db4

  • C:\Users\Admin\AppData\Local\9807688c-7e04-4e28-b6d5-6e4375125d70\2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364.exe

    Filesize

    779KB

    MD5

    1b49e27f89805075fd9572449ed2fdab

    SHA1

    f5a811e69beec50f54e57992c9d31c2c96b52a2e

    SHA256

    2262bb38413e35bc46b83cd0b68a0fce2cd47988f8ccca14be63f8fd74171364

    SHA512

    d24749d0dca42b6977261d837c7c1eda88a5db4b95e5ec59d7ae7d8be2fc74ff66181ea016e89c73e4a59dec17b0ec45cece4ff07527cf138578f0a5643dd3b1

  • C:\Users\Admin\AppData\Local\e597b889-9c90-4dd4-b3e0-e2aa5549b634\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\e597b889-9c90-4dd4-b3e0-e2aa5549b634\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • memory/1008-366-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1008-335-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-140-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-148-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-134-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-136-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-137-0x0000000002100000-0x0000000002195000-memory.dmp

    Filesize

    596KB

  • memory/2760-138-0x00000000022B0000-0x00000000023CB000-memory.dmp

    Filesize

    1.1MB

  • memory/2760-139-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-132-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-141-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-142-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-143-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-144-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-145-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-146-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-147-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-133-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-149-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-120-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-122-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-131-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-130-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-129-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-128-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-127-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-126-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-125-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-124-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-123-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/2760-121-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/4840-275-0x0000000002150000-0x00000000021ED000-memory.dmp

    Filesize

    628KB

  • memory/5008-162-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-183-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-164-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-165-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-166-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-169-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-170-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-171-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-172-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-168-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-173-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-167-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-174-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-175-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-176-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-177-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-178-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-179-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-180-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-181-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-182-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-163-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-184-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-185-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-186-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-187-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-196-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5008-156-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-161-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-157-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5008-160-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-159-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-158-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-257-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5008-260-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5008-150-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5008-155-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-154-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-152-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB

  • memory/5008-153-0x00000000771E0000-0x000000007736E000-memory.dmp

    Filesize

    1.6MB