Analysis

  • max time kernel
    144s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/06/2023, 14:10

General

  • Target

    05177199.exe

  • Size

    684KB

  • MD5

    07e322e00371943a3577322504276f9c

  • SHA1

    492f80833aea121973be091e5634fd89d3ceb0d3

  • SHA256

    c4d33fc79173be38c3a76223263f6b37486903188e3c081586ecd62fcc651497

  • SHA512

    56155008c846382a8ddb8b814ce6208b10d69a4b340bcad7fd7d952b48ee913cafafe188ab76b6c4cbd3a7f2d065a99f4e464fd118832eb23917fe8bdded03bd

  • SSDEEP

    12288:M2T7qAinDx1SYFfo7y7Uw/fsbDAOG4Vf7fjwO98DiWRWF6PHMx:MW7q722oO5fsfzrVTfsP9WFaH8

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .ahtw

  • offline_id

    vPWUuYIO6Lzy2cGt8zL7FERKTf4QMBPjn7F005t1

  • 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-sLaQRb9N6e 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: 0726Isk

rsa_pubkey.plain

Extracted

Family

vidar

Version

4.2

Botnet

a81bcf59d85e6e13257840e65b9d1da8

C2

https://steamcommunity.com/profiles/76561199511129510

https://t.me/rechnungsbetrag

Attributes
  • profile_id_v2

    a81bcf59d85e6e13257840e65b9d1da8

  • user_agent

    Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.38 Safari/537.36 Brave/75

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 2 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
  • 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).

  • 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.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05177199.exe
    "C:\Users\Admin\AppData\Local\Temp\05177199.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Users\Admin\AppData\Local\Temp\05177199.exe
      "C:\Users\Admin\AppData\Local\Temp\05177199.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3704
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c2a1c870-544a-40e7-834d-e90989e32bbf" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3108
      • C:\Users\Admin\AppData\Local\Temp\05177199.exe
        "C:\Users\Admin\AppData\Local\Temp\05177199.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4544
        • C:\Users\Admin\AppData\Local\Temp\05177199.exe
          "C:\Users\Admin\AppData\Local\Temp\05177199.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3628
          • C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build2.exe
            "C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:5072
            • C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build2.exe
              "C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:4684
          • C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build3.exe
            "C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3060
            • 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:2404
    • 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:1584

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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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

    35ea43685e4c722697c1556ff9ecd74f

    SHA1

    6dee725787797e2ada7d18b852d70c077748435d

    SHA256

    21f8bcbffbe824c3658bb39babb8530b7a69e4d46d5e439f9605d72dbfbf4785

    SHA512

    6f784fbc4890c7bd32f3c8fb899dd61d5ea49506ac51e858deb9a6725833b4601811435407f8ab9866141af3a04f39ba3c397383e39b858a7325f1d7218ac085

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

    Filesize

    1KB

    MD5

    962a10dee75f11cdcdd15712a3e05df2

    SHA1

    b3f8017d9bfc6c5453ba7dad6abaad38fb1d5028

    SHA256

    01fe69115267adcb8bb03f9fcbb741e52fa22acf758d6337340d1ae6593baa00

    SHA512

    e315bbe1f3fe3fcc1388c1ec1d1282ad6eac53caecfdb1a188321700d04c8606eb052d9d23e012be75447f7d52f3a957cafd080b08a060cbf59990eaecb0fce4

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

    Filesize

    488B

    MD5

    15f65c56b4f8b0ccd0bfd5cbd59b1635

    SHA1

    d046bcd7eeee51bc29d17316981a7ca642fc2483

    SHA256

    8868cb93de56a871144b25fdaf0229c43423fa9d04871b807acd860e3bad1e03

    SHA512

    61707f6abd10b66c7a35c827d28a346b3a47183d76f444acff611af0f4a25649cdaa35a8e10d6bf3063c261850fecfc2bbf1a14dce8cab9bcae9d4009a54ea04

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

    Filesize

    482B

    MD5

    f7639e5f026663f15d461d292fea644c

    SHA1

    004567a2f2dc1662946aeb2cf5d6734468b0a8ee

    SHA256

    709ed659764e22912a5d90b295849c27fa95c4047b0854a8c5a47a76b4943940

    SHA512

    29bdb301b85e2718100d55fbd4b7e89be7980b03ef6715d1dcc82c0dea0710aa73a4ba585ff07c868ce7cedf862f897fb161ae6e98ab912bf56ef5e25789bfed

  • C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build2.exe

    Filesize

    352KB

    MD5

    f76b7a03bc4db7e669adc6a0eb80322a

    SHA1

    ad3ef2ea2dcf95e805c7be56a7d63f654328121e

    SHA256

    c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d

    SHA512

    626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c

  • C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build2.exe

    Filesize

    352KB

    MD5

    f76b7a03bc4db7e669adc6a0eb80322a

    SHA1

    ad3ef2ea2dcf95e805c7be56a7d63f654328121e

    SHA256

    c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d

    SHA512

    626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c

  • C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build2.exe

    Filesize

    352KB

    MD5

    f76b7a03bc4db7e669adc6a0eb80322a

    SHA1

    ad3ef2ea2dcf95e805c7be56a7d63f654328121e

    SHA256

    c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d

    SHA512

    626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c

  • C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build2.exe

    Filesize

    352KB

    MD5

    f76b7a03bc4db7e669adc6a0eb80322a

    SHA1

    ad3ef2ea2dcf95e805c7be56a7d63f654328121e

    SHA256

    c2c5560cede5fe447363e0d432707fc287312c20e92715b59700888e77eab92d

    SHA512

    626465ba82f07cdfc0f86496e5f2e0f95aea64fd7b1c90708f99eaae78cc3f04ecf3fb22de85b647837009edb62d1125673073ec083cd82e1dd61f8ddc235e5c

  • C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\bb893125-51ee-4cb1-b276-018e4e45e840\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\c2a1c870-544a-40e7-834d-e90989e32bbf\05177199.exe

    Filesize

    684KB

    MD5

    07e322e00371943a3577322504276f9c

    SHA1

    492f80833aea121973be091e5634fd89d3ceb0d3

    SHA256

    c4d33fc79173be38c3a76223263f6b37486903188e3c081586ecd62fcc651497

    SHA512

    56155008c846382a8ddb8b814ce6208b10d69a4b340bcad7fd7d952b48ee913cafafe188ab76b6c4cbd3a7f2d065a99f4e464fd118832eb23917fe8bdded03bd

  • 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/1700-136-0x0000000002540000-0x000000000265B000-memory.dmp

    Filesize

    1.1MB

  • memory/3628-287-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-160-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-161-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-159-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-175-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-172-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-168-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-174-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-167-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-205-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3704-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3704-155-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3704-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3704-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3704-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-189-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4684-214-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/4684-194-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4684-283-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4684-284-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4684-285-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4684-191-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/4684-187-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/5072-190-0x0000000004910000-0x0000000004966000-memory.dmp

    Filesize

    344KB