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Analysis

  • max time kernel
    144s
  • max time network
    131s
  • platform
    windows10-1703_x64
  • resource
    win10-20230703-en
  • resource tags

    arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system
  • submitted
    20/07/2023, 00:08

General

  • Target

    f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388.exe

  • Size

    764KB

  • MD5

    96eeb9f76357a5f8476738ba26fa1786

  • SHA1

    4722735656d3b8c6fb2495d07b5220b5544d8814

  • SHA256

    f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388

  • SHA512

    c590770cf580ededbcf940df41ffd4c7c7c865438c8406bb0776a44f8d48895b35d612e238f659e0c75eaa52044d9a9345cd165770200c356ede1699e1259189

  • SSDEEP

    12288:4K1GfEsffnJY6AI9cBhOPgwFA7O/bfX59wB+f99o55nl:4K1GxXnJyUIWHK+fA/

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .miza

  • offline_id

    1S27jnaC9TYNiwf9VvJvIx5XCXvgyoDAUXHnu0t1

  • 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-nSxayRgUNO 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: 0744Pokj

rsa_pubkey.plain

Extracted

Family

vidar

Version

4.8

Botnet

https://t.me/sundayevent

C2

https://t.me/sundayevent

https://steamcommunity.com/profiles/76561198982268531

Attributes
  • profile_id_v2

    https://t.me/sundayevent

  • user_agent

    Mozilla/5.0 (X11; Linux 3.5.4-1-ARCH i686; es) KHTML/4.9.1 (like Gecko) Konqueror/4.9

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).

  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388.exe
    "C:\Users\Admin\AppData\Local\Temp\f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3716
    • C:\Users\Admin\AppData\Local\Temp\f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388.exe
      "C:\Users\Admin\AppData\Local\Temp\f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:520
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\d27cd3d5-c265-48ec-b3c4-98624caf4d88" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3224
      • C:\Users\Admin\AppData\Local\Temp\f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388.exe
        "C:\Users\Admin\AppData\Local\Temp\f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:5116
        • C:\Users\Admin\AppData\Local\Temp\f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388.exe
          "C:\Users\Admin\AppData\Local\Temp\f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3964
          • C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build2.exe
            "C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4404
            • C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build2.exe
              "C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:1924
          • C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build3.exe
            "C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4456
            • 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:4980
  • 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:1604
    • 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:1048

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    b4c12064e247e370b92a8f22493b2fef

    SHA1

    d8acac75a779d2c93506bed80394a39afe78f140

    SHA256

    07f48640ca434eb9e97c4a3057b009033f32033d4102afd704c795a3cc1f76cf

    SHA512

    9acf2c338e1a50458f1153b23d6324212eb28628f91bb128e2390a440c84a8b350a006ee03116fec48d88eff96da9f8deca9bf56dd6d68ad6260a1ff7570e820

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

    Filesize

    1KB

    MD5

    78aac50b5b68a11cdae8b65d89b52ec4

    SHA1

    a120be30f044e1a0aba57036f531b0a7c9410381

    SHA256

    2206d3ae67c8de46a666df23700554523456a745a3ef1dd18093d4d9e9bfd5de

    SHA512

    d1c0e061a96972d921f4cd39e7d56ecfc50a9bcf5c598615ca8226aa7b06376dd6a4835b72a66f634abef24b7fb596dd4e015b7732db9b4ea09110b027259e53

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

    Filesize

    488B

    MD5

    f82713783ee9e985a8829145320e4be9

    SHA1

    7f3bc52ebce50bdb332c7227aeba0611798bfb4c

    SHA256

    bf31499d3f2c56c29d3472f6988f8b562d5249954ecb17c0bfd418a55e418682

    SHA512

    5cd1022ddc6c3051147d6fe377937b9e2073e47cea0718adead45042e71f274430f8476bd823ef688ed2e2382f5f9a90e10c6356370ab987f731e586085e02b6

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

    Filesize

    482B

    MD5

    7f6b5429f27000d6c6c3527898bd9714

    SHA1

    9012fe4e5da0f6da86a11cb7178615c971830586

    SHA256

    1504a403a5f9c554aa089e7486bdeee2e489a0c76b6d70de22056c10e229a40e

    SHA512

    155183f8d14eac98901a007557dbc1b7654ea26580319ff3bb8a35f1c346154783d8cb8c29639654b0608b0cae109e89610107d2fd8c331566277aa4b48d30ba

  • C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\8fc3b95e-eed3-4ae0-9566-11842cb73195\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\d27cd3d5-c265-48ec-b3c4-98624caf4d88\f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388.exe

    Filesize

    764KB

    MD5

    96eeb9f76357a5f8476738ba26fa1786

    SHA1

    4722735656d3b8c6fb2495d07b5220b5544d8814

    SHA256

    f1d68f0d2bd1bae574c382bba6fb1711a640444d009931dc67be4e2308552388

    SHA512

    c590770cf580ededbcf940df41ffd4c7c7c865438c8406bb0776a44f8d48895b35d612e238f659e0c75eaa52044d9a9345cd165770200c356ede1699e1259189

  • 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/520-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/520-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/520-120-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/520-121-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/520-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1924-181-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1924-180-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1924-247-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1924-248-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1924-178-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1924-246-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1924-182-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1924-193-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/3716-118-0x0000000004830000-0x00000000048CB000-memory.dmp

    Filesize

    620KB

  • memory/3716-119-0x0000000004960000-0x0000000004A7B000-memory.dmp

    Filesize

    1.1MB

  • memory/3964-154-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-170-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-155-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-153-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-151-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-146-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-141-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-140-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-139-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4404-176-0x0000000000750000-0x0000000000850000-memory.dmp

    Filesize

    1024KB

  • memory/4404-177-0x00000000020F0000-0x0000000002185000-memory.dmp

    Filesize

    596KB

  • memory/5116-137-0x0000000002E60000-0x0000000002EF7000-memory.dmp

    Filesize

    604KB