Analysis

  • max time kernel
    102s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    02-05-2022 21:40

General

  • Target

    ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b.exe

  • Size

    784KB

  • MD5

    6653ec7b39942100f66b360f1570e642

  • SHA1

    e25d4b6b3de802e3b7a067cab089c5da79c5830a

  • SHA256

    ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b

  • SHA512

    646cd92caf0b56d8512948fb748113336a0a245677bdd5934545c6ad0d842a4e7cf71fa1113120cb0e0b7160739cdcc057ba458b19796cbd97f0af0cb4e01bc5

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .mmob

  • 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: 0468JIjdm

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 10 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 W32/Agent.OGR!tr.pws Stealer

    suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

  • 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
  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b.exe
    "C:\Users\Admin\AppData\Local\Temp\ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Users\Admin\AppData\Local\Temp\ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b.exe
      "C:\Users\Admin\AppData\Local\Temp\ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:688
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\377fe817-210d-4f37-8726-275226178312" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1060
      • C:\Users\Admin\AppData\Local\Temp\ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b.exe
        "C:\Users\Admin\AppData\Local\Temp\ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1236
        • C:\Users\Admin\AppData\Local\Temp\ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b.exe
          "C:\Users\Admin\AppData\Local\Temp\ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4768
          • C:\Users\Admin\AppData\Local\f848132b-c845-4580-a47e-5b5b82c38732\build2.exe
            "C:\Users\Admin\AppData\Local\f848132b-c845-4580-a47e-5b5b82c38732\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4268
            • C:\Users\Admin\AppData\Local\f848132b-c845-4580-a47e-5b5b82c38732\build2.exe
              "C:\Users\Admin\AppData\Local\f848132b-c845-4580-a47e-5b5b82c38732\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:4068

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

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

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

    a422350579f397fe642fbd3f972aa245

    SHA1

    e46f54f4ff55ceb6e6a98932ec403fae6937d9dc

    SHA256

    43cc855279e9de73c5c0f4e56876dde8dc0e3eb500c7b4e761c637ebe3f3b3b3

    SHA512

    5d72313c935a75b7da166bbb819256ea44b12265a31cca16ac78a5e6f6faedbd6a23022d88960979c315d5b422d7621217f64e2374b1f8001b9144651b75af59

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

    396B

    MD5

    44a0ba89540f26907ed551c372c2a740

    SHA1

    616ec342ce28d0ddfd57e11976bc54276704b9a3

    SHA256

    e5d679d22d907cc7d0d425a7ce6306dfb0c9675d64d90a9ef76767964bde6f75

    SHA512

    541013e41d9deaa43764e580ead446ec7ec675d9b1e5fa14d0f4614d84fe6d0987e71efa3e202ec4ba07d61d1e70f3fa80b80a95ef6bcce6d86e90ddbc46ec82

  • C:\Users\Admin\AppData\Local\377fe817-210d-4f37-8726-275226178312\ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b.exe
    Filesize

    784KB

    MD5

    6653ec7b39942100f66b360f1570e642

    SHA1

    e25d4b6b3de802e3b7a067cab089c5da79c5830a

    SHA256

    ea0704e876707e02ce3fca57a2a375bca52be664abeb45646067aa32693d245b

    SHA512

    646cd92caf0b56d8512948fb748113336a0a245677bdd5934545c6ad0d842a4e7cf71fa1113120cb0e0b7160739cdcc057ba458b19796cbd97f0af0cb4e01bc5

  • C:\Users\Admin\AppData\Local\f848132b-c845-4580-a47e-5b5b82c38732\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\f848132b-c845-4580-a47e-5b5b82c38732\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\f848132b-c845-4580-a47e-5b5b82c38732\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • \ProgramData\mozglue.dll
    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll
    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • memory/536-119-0x00000000021E0000-0x000000000227B000-memory.dmp
    Filesize

    620KB

  • memory/536-120-0x0000000002280000-0x000000000239B000-memory.dmp
    Filesize

    1.1MB

  • memory/688-123-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/688-122-0x0000000000424141-mapping.dmp
  • memory/688-124-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/688-125-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/688-121-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1060-126-0x0000000000000000-mapping.dmp
  • memory/1236-129-0x0000000000681000-0x0000000000712000-memory.dmp
    Filesize

    580KB

  • memory/1236-128-0x0000000000000000-mapping.dmp
  • memory/4068-148-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4068-149-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB

  • memory/4068-143-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4068-147-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4068-146-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4068-144-0x000000000042118A-mapping.dmp
  • memory/4268-139-0x0000000000000000-mapping.dmp
  • memory/4768-138-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4768-133-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4768-132-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4768-131-0x0000000000424141-mapping.dmp