Analysis

  • max time kernel
    145s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/07/2023, 06:58

General

  • Target

    362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3.exe

  • Size

    765KB

  • MD5

    ec3f1fa4b009df01bf69c2dfac5dd7a0

  • SHA1

    49fa0f9a50c11684b2928afb61bc46227945c180

  • SHA256

    362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3

  • SHA512

    7f641f5dfed2222bc889183e7b379ae76878eaf98607d2f3bcbb0adfac8ada3fa8c06a39338b59588ad2463145ea50d8885897f97b3e8700afef4776f190e100

  • SSDEEP

    12288:g5p5Vr31IFHjwPTgIQox1HzfMwBWNHwKEsgfzi2582gtHwuwQcQOXhXqhiWa:g1Vz1AwP8IQW1PBWNufzHn2l/iWa

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .kizu

  • offline_id

    NGHsYuVPwlgoEkG3ENtueNmXtFHSWod7fYayU9t1

  • 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-lOjoPPuBzw 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: 0747JOsie

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 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
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 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.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3.exe
    "C:\Users\Admin\AppData\Local\Temp\362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Users\Admin\AppData\Local\Temp\362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3.exe
      "C:\Users\Admin\AppData\Local\Temp\362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4392
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e06150a8-5c8d-4bf7-ac07-543e974b17ca" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4000
      • C:\Users\Admin\AppData\Local\Temp\362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3.exe
        "C:\Users\Admin\AppData\Local\Temp\362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4564
        • C:\Users\Admin\AppData\Local\Temp\362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3.exe
          "C:\Users\Admin\AppData\Local\Temp\362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:320
          • C:\Users\Admin\AppData\Local\7d434254-d30c-4beb-8d88-b8161b07dbaf\build2.exe
            "C:\Users\Admin\AppData\Local\7d434254-d30c-4beb-8d88-b8161b07dbaf\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3340
            • C:\Users\Admin\AppData\Local\7d434254-d30c-4beb-8d88-b8161b07dbaf\build2.exe
              "C:\Users\Admin\AppData\Local\7d434254-d30c-4beb-8d88-b8161b07dbaf\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:1248

Network

MITRE ATT&CK Enterprise v15

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

    1ebe29638ced3f7ce8f725b6b7ff46f8

    SHA1

    b4ebbbabed6499321a14b3c4a4a74adcce55135f

    SHA256

    d032207b8a1c95e10ebcab100057c875d1f389bdafe042b7a250eb1c5cfdfef1

    SHA512

    58362c445b1344418b72ed764a6cb5838acbc1a3fe44fa6d458741daa6ba0303f280ccda11fba9c2dba10f9013d939aedbab8ec6123e97ce22a243e1dc1f985e

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

    Filesize

    1KB

    MD5

    c01fcb0db5aded4a825c1d7f97a35e1a

    SHA1

    5a75b3fbfd39566b06363f68a98ea146941f262d

    SHA256

    ada788b4cbd81874fb4feaac47fb8d0a31871fde641e9dcd45ee615204f21b46

    SHA512

    88e01d9238db41d9d6bdebe56f43a3c7167c3765e3d00945660ab9b3cb0277337271117ece43d491dfc86dc99afcb0caae80148d9143c95b55483b27c86a67f9

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

    Filesize

    488B

    MD5

    9013e7e272e6793e70e79f04cc32e240

    SHA1

    dc683ffc7f9cc0251cf98ebe852c02187e67a676

    SHA256

    f6dfd620158a96e766d6db9fd85a81148db6760d61f13e922586369b7e58a10c

    SHA512

    ad1d21a0c49cf45a7a77bfba0143633dd450003eeac937374355ce6d6d0cd045d5ae0b1f10540646f019eb10d6c7131908e35bb54d5d93b34b0f1f4f36f0677d

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

    Filesize

    482B

    MD5

    7891fecf441ae9890703818a5d1e9734

    SHA1

    a64ae6b97ab411c429a216111bca9cbf12ec0344

    SHA256

    b18218b0754b56c75b25cd345663ce6651df8af5c54fb5e1f7245ed9462dcf0b

    SHA512

    68ed975d1578e2fef3809d53badccbe7bab56c86aa7695b8af6fe9801629fb426ada1e8a7f9eadaf44307f6e2c8ee86638780baa9893e28da65f7c4c2a65bbda

  • C:\Users\Admin\AppData\Local\7d434254-d30c-4beb-8d88-b8161b07dbaf\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\7d434254-d30c-4beb-8d88-b8161b07dbaf\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\7d434254-d30c-4beb-8d88-b8161b07dbaf\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\7d434254-d30c-4beb-8d88-b8161b07dbaf\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\e06150a8-5c8d-4bf7-ac07-543e974b17ca\362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3.exe

    Filesize

    765KB

    MD5

    ec3f1fa4b009df01bf69c2dfac5dd7a0

    SHA1

    49fa0f9a50c11684b2928afb61bc46227945c180

    SHA256

    362085edc7090a9777e56166a404e11d6b1c0103639da383cd37915f0ef1d1a3

    SHA512

    7f641f5dfed2222bc889183e7b379ae76878eaf98607d2f3bcbb0adfac8ada3fa8c06a39338b59588ad2463145ea50d8885897f97b3e8700afef4776f190e100

  • memory/320-161-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/320-276-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/320-155-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/320-274-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/320-160-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/320-153-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/320-273-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/320-272-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/320-176-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/320-270-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/320-154-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1128-135-0x00000000043C0000-0x00000000044DB000-memory.dmp

    Filesize

    1.1MB

  • memory/1128-134-0x0000000004320000-0x00000000043BD000-memory.dmp

    Filesize

    628KB

  • memory/1248-183-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1248-267-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1248-180-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1248-265-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1248-184-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1248-194-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/1248-268-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1248-182-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1248-264-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/3340-179-0x0000000002200000-0x0000000002295000-memory.dmp

    Filesize

    596KB

  • memory/3340-178-0x0000000000830000-0x0000000000930000-memory.dmp

    Filesize

    1024KB

  • memory/4392-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4392-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4392-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4392-139-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4392-148-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4564-151-0x0000000004160000-0x0000000004201000-memory.dmp

    Filesize

    644KB