Resubmissions

08/10/2023, 20:25

231008-y69l1sfh3s 10

Analysis

  • max time kernel
    147s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/10/2023, 20:25

General

  • Target

    file.exe

  • Size

    786KB

  • MD5

    f49c53a4db7c7a6e0ef1e9243cde5ea5

  • SHA1

    86e2388514f7f4c2a7acd09c03325b0ed690ef83

  • SHA256

    cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07

  • SHA512

    8bd94a77fcbccbd25d6dcdbad6cf1aefc5e5cefdf3f73f4f7bda2d68147e0a87a877968067528c2bb3cfb95c3ffd668620547fb87a8691ed534bfc24a74b0226

  • SSDEEP

    12288:TOZ8mfnnY5jT3ncoNw7JePBRZ20CohvlPMWaRUyunKH6bkhT0J:4pY5jwo0JGBRZlNNGtuKHEwT0

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test2/get.php

Attributes
  • extension

    .mlza

  • offline_id

    FjtJkuhRHnUARRt9GnbbgUTa6ErhJq4ZM668xSt1

  • 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-xN3VuzQl0a 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: 0803JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

5.9

Botnet

b4fc4cd2d76417bf461814b9d989fcdb

C2

https://steamcommunity.com/profiles/76561199557479327

https://t.me/grizmons

Attributes
  • profile_id_v2

    b4fc4cd2d76417bf461814b9d989fcdb

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36 OPR/104.0.0.0

Signatures

  • Detected Djvu ransomware 16 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
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2692
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3284
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\5487c5a0-c78c-4e24-88f6-b370055cbc36" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2328
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3564
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3780
          • C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build2.exe
            "C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2044
            • C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build2.exe
              "C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build2.exe"
              6⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1408
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3400
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4424
          • C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build3.exe
            "C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4556
            • 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:4256
  • 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:2980
    • 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:3352
  • C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
    1⤵
      PID:4108
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k UnistackSvcGroup
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1540

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\mozglue.dll

      Filesize

      593KB

      MD5

      c8fd9be83bc728cc04beffafc2907fe9

      SHA1

      95ab9f701e0024cedfbd312bcfe4e726744c4f2e

      SHA256

      ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

      SHA512

      fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

    • C:\ProgramData\nss3.dll

      Filesize

      2.0MB

      MD5

      1cc453cdf74f31e4d913ff9c10acdde2

      SHA1

      6e85eae544d6e965f15fa5c39700fa7202f3aafe

      SHA256

      ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

      SHA512

      dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

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

      Filesize

      2KB

      MD5

      651484023a0a0eff81663c1b91002c8c

      SHA1

      9a38c674bb602eb6ed855d61cdddc8d8e5f7baf9

      SHA256

      058f0a03b30cf6acfe9f33f4db7ac91153a094a8804e6886bf476fdc317e7f8d

      SHA512

      d74974ecdcf9a3cb8c55563bc27c273b401b0b6d88a3a5cc963fa1fd927b11e97ccf6641ea060c0890a62c216751f663d0c1c6f5e9d397e1461b8592ce0279ca

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

      Filesize

      1KB

      MD5

      2a61a3d0f5beb7727441b0e010c30d7d

      SHA1

      2dc8b67f13196d3a658d79c9c575bf0a0b75da15

      SHA256

      8f97e861acd3950fde5361476dd989039edff251a00b7de4df84cbacfa629a0d

      SHA512

      d29a461cd7c4746015684c9213a72748d5440191b4b9f07209723e0b8e2b59f11cafe4b87acd123d2987ed1990d3204402f69b7f78f8607782c441efb307a12a

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

      Filesize

      488B

      MD5

      640743ad7b8ef7f44cc047470b630605

      SHA1

      e900de5994dce82e699375a879175231e39c5582

      SHA256

      c2ec25eb90ffc35023569615c827f63ebb4e6e99dff1dcbe0cc3f10977595edc

      SHA512

      429bf46a3c7c4bfe555c021fd0d20a18f898b019c6b9d2f724c4f86c3dc0a481d8d920bdf2d49fabf857525175c3ca9b6534f1cd7d4f5112cf76ff97a78a5264

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

      Filesize

      482B

      MD5

      2bd114a2cf564e665a7a84cca9ce2682

      SHA1

      66252e5c19f1f657dde5bb89fed4492c35767a5d

      SHA256

      9e2b8c8c456507a4d32174eb4db9c630124d1a9c755cd3f2f6f07b4c9d20ac01

      SHA512

      3f0d55ceda740f73c0fade8651ef6ad54917c3a89d46f4c2a52c317c3a9e78685f26db8b9c67376eca0bc17eee40a0dbe5fa66dd3b59fa3cfeb91472ffd6a525

    • C:\Users\Admin\AppData\Local\5487c5a0-c78c-4e24-88f6-b370055cbc36\file.exe

      Filesize

      786KB

      MD5

      f49c53a4db7c7a6e0ef1e9243cde5ea5

      SHA1

      86e2388514f7f4c2a7acd09c03325b0ed690ef83

      SHA256

      cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07

      SHA512

      8bd94a77fcbccbd25d6dcdbad6cf1aefc5e5cefdf3f73f4f7bda2d68147e0a87a877968067528c2bb3cfb95c3ffd668620547fb87a8691ed534bfc24a74b0226

    • C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build2.exe

      Filesize

      338KB

      MD5

      4af351cad48ae0a8310396db36088d01

      SHA1

      587e5cce7a25de94acd440925981f27c4b052113

      SHA256

      e81cf314b9336ae58e0ed051467245f4eea056c30bd54429d740aad521813092

      SHA512

      73b347494835d2fbb378f87c4d1f81b71801e14d598377e288af08f37415f85dc212d71128e85111131938c62f49c6eb3fb7c74ba9f6927025cbbd5da799a982

    • C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build2.exe

      Filesize

      338KB

      MD5

      4af351cad48ae0a8310396db36088d01

      SHA1

      587e5cce7a25de94acd440925981f27c4b052113

      SHA256

      e81cf314b9336ae58e0ed051467245f4eea056c30bd54429d740aad521813092

      SHA512

      73b347494835d2fbb378f87c4d1f81b71801e14d598377e288af08f37415f85dc212d71128e85111131938c62f49c6eb3fb7c74ba9f6927025cbbd5da799a982

    • C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build2.exe

      Filesize

      338KB

      MD5

      4af351cad48ae0a8310396db36088d01

      SHA1

      587e5cce7a25de94acd440925981f27c4b052113

      SHA256

      e81cf314b9336ae58e0ed051467245f4eea056c30bd54429d740aad521813092

      SHA512

      73b347494835d2fbb378f87c4d1f81b71801e14d598377e288af08f37415f85dc212d71128e85111131938c62f49c6eb3fb7c74ba9f6927025cbbd5da799a982

    • C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build2.exe

      Filesize

      338KB

      MD5

      4af351cad48ae0a8310396db36088d01

      SHA1

      587e5cce7a25de94acd440925981f27c4b052113

      SHA256

      e81cf314b9336ae58e0ed051467245f4eea056c30bd54429d740aad521813092

      SHA512

      73b347494835d2fbb378f87c4d1f81b71801e14d598377e288af08f37415f85dc212d71128e85111131938c62f49c6eb3fb7c74ba9f6927025cbbd5da799a982

    • C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\df7dc013-a318-4170-b981-4763f16f2331\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/1408-76-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/1408-118-0x0000000000400000-0x0000000000465000-memory.dmp

      Filesize

      404KB

    • memory/1408-120-0x0000000000400000-0x0000000000465000-memory.dmp

      Filesize

      404KB

    • memory/1408-119-0x0000000000400000-0x0000000000465000-memory.dmp

      Filesize

      404KB

    • memory/1408-60-0x0000000000400000-0x0000000000465000-memory.dmp

      Filesize

      404KB

    • memory/1408-66-0x0000000000400000-0x0000000000465000-memory.dmp

      Filesize

      404KB

    • memory/1408-65-0x0000000000400000-0x0000000000465000-memory.dmp

      Filesize

      404KB

    • memory/1408-63-0x0000000000400000-0x0000000000465000-memory.dmp

      Filesize

      404KB

    • memory/1540-148-0x0000027E1CE40000-0x0000027E1CE50000-memory.dmp

      Filesize

      64KB

    • memory/1540-132-0x0000027E1CD40000-0x0000027E1CD50000-memory.dmp

      Filesize

      64KB

    • memory/2044-61-0x0000000002750000-0x0000000002850000-memory.dmp

      Filesize

      1024KB

    • memory/2044-64-0x00000000026D0000-0x0000000002721000-memory.dmp

      Filesize

      324KB

    • memory/2692-1-0x0000000004050000-0x00000000040E8000-memory.dmp

      Filesize

      608KB

    • memory/2692-2-0x00000000041D0000-0x00000000042EB000-memory.dmp

      Filesize

      1.1MB

    • memory/3284-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3284-15-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3284-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3284-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3284-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3564-18-0x00000000023B0000-0x0000000002445000-memory.dmp

      Filesize

      596KB

    • memory/3780-35-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3780-22-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3780-28-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3780-34-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3780-32-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3780-122-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3780-20-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3780-21-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3780-27-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3780-56-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB