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Analysis

  • max time kernel
    145s
  • max time network
    147s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    10/03/2023, 13:55

General

  • Target

    8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a.exe

  • Size

    706KB

  • MD5

    4df8e589bcc9458c58cd6e0c4ccf7289

  • SHA1

    f2f3c4fd6b0db9cbced2ece93f0fbb6982ec36fd

  • SHA256

    8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a

  • SHA512

    049b67f0ebca27fc6892106aa029f14340a6ed5cfb1e7fb2d5bb71eaebbbd1c3cb4a7fd18fbf0f550d378e20b2ef771b24b70df0f2df194c7cc33daba27a72da

  • SSDEEP

    12288:miTsvu+9IP5qsrZXSvIb73kPB7UAibY4amaysXsfMxz3PAH:mjvmPssrZLk1DmaF7P

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .cosw

  • offline_id

    fTU4hYOJ0niv7WAg9utRTzxXv2TcoEvGPJhzIot1

  • payload_url

    http://uaery.top/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-hhA4nKfJBj 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: 0658JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

2.9

Botnet

694f12963bedb0c6040fb3c74aac71e5

C2

https://t.me/nemesisgrow

https://steamcommunity.com/profiles/76561199471222742

http://65.109.12.165:80

Attributes
  • profile_id_v2

    694f12963bedb0c6040fb3c74aac71e5

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
  • 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). Likely ransomware behaviour.

  • 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 WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a.exe
    "C:\Users\Admin\AppData\Local\Temp\8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4240
    • C:\Users\Admin\AppData\Local\Temp\8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a.exe
      "C:\Users\Admin\AppData\Local\Temp\8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4272
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\fd91d623-4614-40df-98c9-8469315369be" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3112
      • C:\Users\Admin\AppData\Local\Temp\8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a.exe
        "C:\Users\Admin\AppData\Local\Temp\8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4820
        • C:\Users\Admin\AppData\Local\Temp\8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a.exe
          "C:\Users\Admin\AppData\Local\Temp\8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4148
          • C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build2.exe
            "C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1220
            • C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build2.exe
              "C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4472
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3408
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:760
          • C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build3.exe
            "C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3540
            • 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:2988
  • 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:3440
    • 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:1856

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    7c6ae82f0661b107fe0029886a8e9506

    SHA1

    20cfdd24e33b49c6bec67a52a8076415ec80fe37

    SHA256

    3853cc02851d35516bd479b587a069d5a9eb60a9a9212d7d85d3b5c7f9c6c0c4

    SHA512

    1a724a00a6fe261240bf6269774b254659843068dd08fc7b3e5c13697c4dc2e164701dd7988fdfe762a2da0ad00cad456ca9bcfee2204bf1df76d5f93a59240c

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

    Filesize

    1KB

    MD5

    fafb2d795af06b05e5ae489401edb786

    SHA1

    137f724049c8ce7dc1d438677f7b6fa32b275205

    SHA256

    7673bf3d6aa2a14da9c3433ac1651d907697a7c79e32987d150a757f3866b5f0

    SHA512

    38c83466ce78cb43dbfa8255432abc7b6347589b0a6dd3b00aa4d81dbd9664a3cafc2bbca9ed38bcfa0ee32ace2a8ea8c8cd5471d6896f7c4dfd6dca03089769

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

    Filesize

    488B

    MD5

    0a060ff812105bdac1ad56d6bc6f7b95

    SHA1

    b331a0f8624ab439136992f3316631d70d4edbf8

    SHA256

    dc90ee3dd378ba8d2e3a685f7b998541c5e1ebc5487418edfca9841d6a94a2d7

    SHA512

    a9a15a20c4e3a3e255b0a45f771aa9f81748961942598f2f324b3fcdce5ac624934c21ad1ba3b2d8347e45909cbd82fe5a0b41a6a657914ab994c1bf6fc8c36f

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

    Filesize

    482B

    MD5

    d5818013867dc68f46a2ffd3553549e1

    SHA1

    61407d5eee4f5ca03b7da7aaff3a166009e54e99

    SHA256

    82c157806a66f0cf2f2c170707d228a572f0ed0aaf733c2944a074d208439483

    SHA512

    ad0660e9f7138a599b79f5158cc95e00bca3c48e0f38549fd4e3d0b0a44f38a4fa3f8a712110c4942e8521211d8099c6eaeb3dda0dd3504fc6ade830573b30b1

  • C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build2.exe

    Filesize

    382KB

    MD5

    c56b758f00562948de9cac375422074c

    SHA1

    9f98c4c403b98aea3624d905b2e1ccbe5939c908

    SHA256

    3df572ecd8ad88b1b744adc3323998b64d8303ef1a19eba3d7fd6e76aeb67532

    SHA512

    a77a22431ccfd7e565639d90b205ff7132ddfc39a1d46c8ff5de8f71265c56706230b569fb22a72dbc6bbc7c92688ebb024b167971d3b7859c8b6b01ad9084fa

  • C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build2.exe

    Filesize

    382KB

    MD5

    c56b758f00562948de9cac375422074c

    SHA1

    9f98c4c403b98aea3624d905b2e1ccbe5939c908

    SHA256

    3df572ecd8ad88b1b744adc3323998b64d8303ef1a19eba3d7fd6e76aeb67532

    SHA512

    a77a22431ccfd7e565639d90b205ff7132ddfc39a1d46c8ff5de8f71265c56706230b569fb22a72dbc6bbc7c92688ebb024b167971d3b7859c8b6b01ad9084fa

  • C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build2.exe

    Filesize

    382KB

    MD5

    c56b758f00562948de9cac375422074c

    SHA1

    9f98c4c403b98aea3624d905b2e1ccbe5939c908

    SHA256

    3df572ecd8ad88b1b744adc3323998b64d8303ef1a19eba3d7fd6e76aeb67532

    SHA512

    a77a22431ccfd7e565639d90b205ff7132ddfc39a1d46c8ff5de8f71265c56706230b569fb22a72dbc6bbc7c92688ebb024b167971d3b7859c8b6b01ad9084fa

  • C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\9834b771-f3f7-4b32-b13a-51be9b464fe9\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\fd91d623-4614-40df-98c9-8469315369be\8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a.exe

    Filesize

    706KB

    MD5

    4df8e589bcc9458c58cd6e0c4ccf7289

    SHA1

    f2f3c4fd6b0db9cbced2ece93f0fbb6982ec36fd

    SHA256

    8aa518f4b9b4258806ff4e87c9bb342f368dae7ac899b3ed6df21ee8c57e633a

    SHA512

    049b67f0ebca27fc6892106aa029f14340a6ed5cfb1e7fb2d5bb71eaebbbd1c3cb4a7fd18fbf0f550d378e20b2ef771b24b70df0f2df194c7cc33daba27a72da

  • 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/1220-166-0x0000000000750000-0x00000000007AD000-memory.dmp

    Filesize

    372KB

  • memory/4148-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4148-170-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4148-155-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4148-187-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4148-140-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4148-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4148-154-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4148-148-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4148-141-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4148-146-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4240-123-0x00000000023D0000-0x00000000024EB000-memory.dmp

    Filesize

    1.1MB

  • memory/4272-121-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4272-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4272-125-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4272-124-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4272-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4472-167-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4472-190-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/4472-169-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4472-232-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4472-168-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4472-164-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4472-247-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4472-248-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4472-249-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB