Analysis

  • max time kernel
    145s
  • max time network
    133s
  • platform
    windows10-1703_x64
  • resource
    win10-20230831-en
  • resource tags

    arch:x64arch:x86image:win10-20230831-enlocale:en-usos:windows10-1703-x64system
  • submitted
    03-09-2023 11:28

General

  • Target

    b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91.exe

  • Size

    787KB

  • MD5

    9ed576976a446215649735cba2e5a776

  • SHA1

    4d890e5c3d07fb1866a13beef7096114cf64986a

  • SHA256

    b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91

  • SHA512

    2ad0f038f781b32dc72f86b3bf919c4c172dc4704526b10dcc3f69602159adce36af0c996d7b9cf43614ebfb95c9f95150db536a94f9ecb8699269a64b4fa337

  • SSDEEP

    12288:V7ErFSBLr6EKPy/CA4EHGLDUAu2SUY3a1ID+sRNbcPPEl3R/iHsF:ZErFS8yKFUh2SUY3YSbciR/iHsF

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .rzkd

  • offline_id

    4OGfweO4lKfNTwKczrTWD8yTxQkyAGofoZhcOKt1

  • payload_url

    http://colisumy.com/dl/build2.exe

    http://zexeq.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-RX6ODkr7XJ 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: 0774AUSdjl

rsa_pubkey.plain

Extracted

Family

vidar

Version

5.4

Botnet

25f5344bfcb62e75b7946c3a681aec54

C2

https://t.me/vogogor

https://steamcommunity.com/profiles/76561199545993403

Attributes
  • profile_id_v2

    25f5344bfcb62e75b7946c3a681aec54

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.2.13 (KHTML, like Gecko) Version/16.5.2 Safari/605.2.13

Signatures

  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 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
  • 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).

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91.exe
    "C:\Users\Admin\AppData\Local\Temp\b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1968
    • C:\Users\Admin\AppData\Local\Temp\b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91.exe
      "C:\Users\Admin\AppData\Local\Temp\b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2540
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\5211919c-1cb5-4820-b402-a8fb2b9156b5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:776
      • C:\Users\Admin\AppData\Local\Temp\b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91.exe
        "C:\Users\Admin\AppData\Local\Temp\b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:388
        • C:\Users\Admin\AppData\Local\Temp\b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91.exe
          "C:\Users\Admin\AppData\Local\Temp\b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:840
          • C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build2.exe
            "C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4976
            • C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build2.exe
              "C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:892
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1340
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4260
          • C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build3.exe
            "C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4788
            • 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:1116
  • 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:3672
    • 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:4868

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    d1c479a62d7c8b0edbf62031118e27cd

    SHA1

    e64e22a92ec405d0e70e6597f73e2ba6753641b6

    SHA256

    c1b2441a284551a05854dcb105aa38dfb9e144717f622bc0456a8d38c7c4cb02

    SHA512

    19917db8f27aaf94d283c0689780ca4c23b0bce793ca52076ea0041b6cc054bf254b3a26ac524f5c434311e40116367396d2cb978a162b2ba1afd756467cd346

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

    Filesize

    1KB

    MD5

    137e0b4840f8125ba9ba35f5e35a756e

    SHA1

    d0b462994fcea1803b01b516c97fe2c93f59f934

    SHA256

    f26683ff85626d7ef4137cebe2d9d4cb0dfcb4b7d80bc1348e3fbac919fa04d9

    SHA512

    660b7cf0fbc09d0fc3071e502545933f094d2f6462904db07d3810a3cca5ef30dba5742d67634c3d63da748e944cc375369fe1afb4ae13d073f88724dedc5ec5

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

    Filesize

    488B

    MD5

    52a0a851932e8a07969827a68813d26f

    SHA1

    8ad79ec7bb1cef3aa047b6df610ac66acba71620

    SHA256

    6cd1ad0039fdeb8b02f040b00382d0b7530eeefccad10cb631d2d52709ea50ad

    SHA512

    1c4a52c92b0cdc495156282d16805587b86a75ef920b83e5759e727de25f6b0aca34788e4d9081aeaabd855e82a6334d1bfda61c2b37b7d3fb4462c0bea62eb7

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

    Filesize

    482B

    MD5

    89928dc5c26e285c7ab00297f0d1226d

    SHA1

    d1c9c94e8a4771a2a594a0b101d9b2d82768de50

    SHA256

    cec32df23e442fb4af65b6f3e92fe3a3dc544e12ac8f96d27b84fdd0e2ae929c

    SHA512

    40a0fb4708058e204bb16bb9caa47a58be8ba8f25699c46d2e86f0694cc57462426e0d450226597034341de9eb1c60d241a155172de9f31884192bf8e9a888de

  • C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build2.exe

    Filesize

    396KB

    MD5

    a3d4e0b89f4210c0ad7d8df63ff21876

    SHA1

    06ae277ba8c0b747df2498add0fdaa3e8fbe5ebb

    SHA256

    3609c3cbb2bee674e91d44e4e49197c5403a33ac9649343feacedb5ca5759ef5

    SHA512

    dfd7395e1a7fe09e404ab76196a6ca5ff1bc7f880efab4e8126ccad451fc9699ad750ce195c98cc7f449c0bff69c693884c8b2307c75fab5f616a442cabb544a

  • C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build2.exe

    Filesize

    396KB

    MD5

    a3d4e0b89f4210c0ad7d8df63ff21876

    SHA1

    06ae277ba8c0b747df2498add0fdaa3e8fbe5ebb

    SHA256

    3609c3cbb2bee674e91d44e4e49197c5403a33ac9649343feacedb5ca5759ef5

    SHA512

    dfd7395e1a7fe09e404ab76196a6ca5ff1bc7f880efab4e8126ccad451fc9699ad750ce195c98cc7f449c0bff69c693884c8b2307c75fab5f616a442cabb544a

  • C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build2.exe

    Filesize

    396KB

    MD5

    a3d4e0b89f4210c0ad7d8df63ff21876

    SHA1

    06ae277ba8c0b747df2498add0fdaa3e8fbe5ebb

    SHA256

    3609c3cbb2bee674e91d44e4e49197c5403a33ac9649343feacedb5ca5759ef5

    SHA512

    dfd7395e1a7fe09e404ab76196a6ca5ff1bc7f880efab4e8126ccad451fc9699ad750ce195c98cc7f449c0bff69c693884c8b2307c75fab5f616a442cabb544a

  • C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\34738241-cb0f-40f9-9784-e55c54126c32\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\5211919c-1cb5-4820-b402-a8fb2b9156b5\b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91.exe

    Filesize

    787KB

    MD5

    9ed576976a446215649735cba2e5a776

    SHA1

    4d890e5c3d07fb1866a13beef7096114cf64986a

    SHA256

    b06070443b0693394daced912c6e92a4123c9a47e0e5fd96d4fc345ece746e91

    SHA512

    2ad0f038f781b32dc72f86b3bf919c4c172dc4704526b10dcc3f69602159adce36af0c996d7b9cf43614ebfb95c9f95150db536a94f9ecb8699269a64b4fa337

  • 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

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

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/388-19-0x0000000004060000-0x00000000040F1000-memory.dmp

    Filesize

    580KB

  • memory/840-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/840-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/840-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/840-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/840-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/840-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/840-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/840-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/840-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/840-71-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/892-110-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/892-58-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/892-59-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/892-109-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/892-72-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/892-60-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/892-111-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/892-50-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/1968-0-0x0000000004120000-0x00000000041B1000-memory.dmp

    Filesize

    580KB

  • memory/1968-4-0x0000000004120000-0x00000000041B1000-memory.dmp

    Filesize

    580KB

  • memory/1968-1-0x00000000042A0000-0x00000000043BB000-memory.dmp

    Filesize

    1.1MB

  • memory/2540-2-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2540-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2540-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2540-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2540-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4976-51-0x0000000002090000-0x00000000020EC000-memory.dmp

    Filesize

    368KB

  • memory/4976-45-0x0000000002160000-0x0000000002260000-memory.dmp

    Filesize

    1024KB