Analysis

  • max time kernel
    177s
  • max time network
    215s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    02-05-2022 23:36

General

  • Target

    e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b.exe

  • Size

    784KB

  • MD5

    d268ae2ac6e99bca13de0391d471ea3c

  • SHA1

    dca155718279983d9a562660d2c707a0b2b8a198

  • SHA256

    e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b

  • SHA512

    89d131028491a30b636ca98ee3a89828669fd6ac4fd6b46b07163b1a3646c573553550b80b66f1def1cfed5e64f89a11092958d74c1c0c6f041a67d0c76c115d

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes
  • extension

    .ttii

  • offline_id

    w6IKbZ9nGWp1wM5W7MK8obmynSc0Hx2FVdvsSzt1

  • payload_url

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

    http://fuyt.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-PRDjRCeB3y 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: manager@time2mail.ch Reserve e-mail address to contact us: supportsys@airmail.cc Your personal ID: 0465JIjdm

rsa_pubkey.plain

Extracted

Family

vidar

Version

51.8

Botnet

517

C2

https://t.me/mm20220428

https://koyu.space/@ronxik123

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 8 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • 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 Public Key Download

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

  • 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

  • Vidar Stealer 5 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b.exe
    "C:\Users\Admin\AppData\Local\Temp\e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2552
    • C:\Users\Admin\AppData\Local\Temp\e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b.exe
      "C:\Users\Admin\AppData\Local\Temp\e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2708
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\445282dc-c089-41c6-80e5-52d71486d826" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4540
      • C:\Users\Admin\AppData\Local\Temp\e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b.exe
        "C:\Users\Admin\AppData\Local\Temp\e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4512
        • C:\Users\Admin\AppData\Local\Temp\e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b.exe
          "C:\Users\Admin\AppData\Local\Temp\e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4196
          • C:\Users\Admin\AppData\Local\cc20f517-9667-48d1-a4e8-45b17a50dcf9\build2.exe
            "C:\Users\Admin\AppData\Local\cc20f517-9667-48d1-a4e8-45b17a50dcf9\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2396
            • C:\Users\Admin\AppData\Local\cc20f517-9667-48d1-a4e8-45b17a50dcf9\build2.exe
              "C:\Users\Admin\AppData\Local\cc20f517-9667-48d1-a4e8-45b17a50dcf9\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:212

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    727B

    MD5

    d7f7c80fe97665d703c4060cb969e8bc

    SHA1

    39f1cdd78563e6139c4212644d3190a8359290eb

    SHA256

    34f78e2112650156ff1e9f3ab156f8a12cf68aa00e2a6f25ca41ba88e2429a40

    SHA512

    6d420aafab6cd5c273b5ae1446d1b9861dae388b2bc50b219c11efdd1f58a05c03d89fbb36b3bb3e0bde79974311c2e6997899e89f62811df54ed4a158f8c338

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

    471B

    MD5

    36d45b330d5eef29217009ce51799d72

    SHA1

    e5a0735690fc198a2ab02c1a0b2487d5014cba9b

    SHA256

    a1e5b5827ed7bbafeb8c063542478e1dcd34d46c6e20aca3f07f95f503963b9c

    SHA512

    2acec052c274574f0d748d1d35753fa2b9327dcab72b2bb40025a0cd604b887345511f0a01a4b95c4f412df4753602159ddc724a499235490246a17d38a1fa42

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

    402B

    MD5

    f4993babb2d8b6404b38485819fbdb7b

    SHA1

    4935658e74ccac386494ef4970b8740e1e79f5fe

    SHA256

    15d4cb5f230309b1cc4137cfd173e670c7f7e3a30a380c02d7b8dc3b58bb5a0f

    SHA512

    eb4e7afe7d18c3d0c58726295a1954c5b828992f5085573a73f48050e9d62c9c62cffdc61324f1c9997ec7073c5972aa1ced919a136d831b607e4adac2040b47

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

    396B

    MD5

    ac7302779bae153afe6ac516cb89a882

    SHA1

    12317e073ba1c04a34ed2cef3a50207bf099b682

    SHA256

    728a35af7ba3136a0228b65a46f9a7ad0f8b21a4a0e4aa214d262d6a61d8bc7a

    SHA512

    0dee979081ba22999228efd4fff14beb893630d1828cf0a905d2c8d88de8611382472a217fc51b427a42ccd88000e0069f519726e67822f0d230dbd01a1aa8c5

  • C:\Users\Admin\AppData\Local\445282dc-c089-41c6-80e5-52d71486d826\e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b.exe
    Filesize

    784KB

    MD5

    d268ae2ac6e99bca13de0391d471ea3c

    SHA1

    dca155718279983d9a562660d2c707a0b2b8a198

    SHA256

    e723740e5d601d1af612a331ca3dfb9ebea3021c76b915cf4b852b114c20ff2b

    SHA512

    89d131028491a30b636ca98ee3a89828669fd6ac4fd6b46b07163b1a3646c573553550b80b66f1def1cfed5e64f89a11092958d74c1c0c6f041a67d0c76c115d

  • C:\Users\Admin\AppData\Local\cc20f517-9667-48d1-a4e8-45b17a50dcf9\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\cc20f517-9667-48d1-a4e8-45b17a50dcf9\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\cc20f517-9667-48d1-a4e8-45b17a50dcf9\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • memory/212-161-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/212-160-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/212-154-0x0000000000000000-mapping.dmp
  • memory/212-157-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/212-155-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2396-158-0x000000000064B000-0x0000000000675000-memory.dmp
    Filesize

    168KB

  • memory/2396-159-0x00000000020D0000-0x0000000002119000-memory.dmp
    Filesize

    292KB

  • memory/2396-151-0x0000000000000000-mapping.dmp
  • memory/2552-134-0x00000000022A0000-0x00000000023BB000-memory.dmp
    Filesize

    1.1MB

  • memory/2552-132-0x000000000220A000-0x000000000229B000-memory.dmp
    Filesize

    580KB

  • memory/2708-135-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2708-136-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2708-133-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2708-131-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2708-130-0x0000000000000000-mapping.dmp
  • memory/4196-146-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4196-144-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4196-142-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4196-140-0x0000000000000000-mapping.dmp
  • memory/4512-143-0x0000000002190000-0x0000000002221000-memory.dmp
    Filesize

    580KB

  • memory/4512-139-0x0000000000000000-mapping.dmp
  • memory/4540-137-0x0000000000000000-mapping.dmp