Analysis

  • max time kernel
    146s
  • max time network
    137s
  • 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, 10:30

General

  • Target

    844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea.exe

  • Size

    815KB

  • MD5

    ec0a38e272553f7f6f4a01b0102ef66e

  • SHA1

    4dfc557bbaa198dcd56289dbf207a89c1d6c2a94

  • SHA256

    844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea

  • SHA512

    969d8b73b4f1988f310bd879a9d80bfe51287a24b4b7f4e979478b8ba339cf725e601a976161757bdf8f27b32909d261f4a715755e22668dc87c0f63715e62de

  • SSDEEP

    12288:U4q8nwcGFJ3V35pSdydxVBAMf8rtmTmDhVCm9kXWil+I81niFXxg/XxS:wdV35oGbOMotmghVQmf1niFq/o

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\844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea.exe
    "C:\Users\Admin\AppData\Local\Temp\844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4624
    • C:\Users\Admin\AppData\Local\Temp\844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea.exe
      "C:\Users\Admin\AppData\Local\Temp\844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3744
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\308c99e0-06fd-4ca9-9247-166431268cf3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1612
      • C:\Users\Admin\AppData\Local\Temp\844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea.exe
        "C:\Users\Admin\AppData\Local\Temp\844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4604
        • C:\Users\Admin\AppData\Local\Temp\844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea.exe
          "C:\Users\Admin\AppData\Local\Temp\844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1052
          • C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\build2.exe
            "C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:960
            • C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\build2.exe
              "C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2160
          • C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\build3.exe
            "C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1448
            • 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:2996
  • 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:4268
    • 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:4264

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

    1ebe29638ced3f7ce8f725b6b7ff46f8

    SHA1

    b4ebbbabed6499321a14b3c4a4a74adcce55135f

    SHA256

    d032207b8a1c95e10ebcab100057c875d1f389bdafe042b7a250eb1c5cfdfef1

    SHA512

    58362c445b1344418b72ed764a6cb5838acbc1a3fe44fa6d458741daa6ba0303f280ccda11fba9c2dba10f9013d939aedbab8ec6123e97ce22a243e1dc1f985e

  • 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

    0342d2709f0b3dcc7b176515a55fd3b6

    SHA1

    abc0f5ba8ab9f175a5228a8ee8aeb35a2f3e3733

    SHA256

    ed7ec8ae7f956256991a94c3e3f8e4aab7cee180a3ffd3f6dbe7651d46778f23

    SHA512

    fd4648dbf7b5151625d96bf5fd32aca1971fbd20952bc7f7e8cd72bdbbd2e1cd0d9b98bbc79626dbb92aa4f07bba800c713c94eedddcf40f19db1b41fc8ee7a4

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

    Filesize

    482B

    MD5

    9d4f512aa04d9b86a66f36b071e0dd11

    SHA1

    6b9b3279c2fcd03b0962f393348af1f37e23214d

    SHA256

    3a701f0292220db5a2108f0e25f13b28c23cee3f0a76b97ff3a1c953a3930598

    SHA512

    8b490a7252ecaf0a21ff2cc3d9fa741a0aeac29612068a71ddc3b08fcf9912301270e6dd91ed0ea0ad2486f8c6308ddc2aeca73c1bac1248987b618920dfe35c

  • C:\Users\Admin\AppData\Local\308c99e0-06fd-4ca9-9247-166431268cf3\844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea.exe

    Filesize

    815KB

    MD5

    ec0a38e272553f7f6f4a01b0102ef66e

    SHA1

    4dfc557bbaa198dcd56289dbf207a89c1d6c2a94

    SHA256

    844d3b228036305ca2225f1aad91f69d65c3efc3dd9409e3e2667295912ae5ea

    SHA512

    969d8b73b4f1988f310bd879a9d80bfe51287a24b4b7f4e979478b8ba339cf725e601a976161757bdf8f27b32909d261f4a715755e22668dc87c0f63715e62de

  • C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\6f58fda8-c1fb-47cc-8db3-7847c6898a36\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

  • 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/960-174-0x0000000000860000-0x0000000000960000-memory.dmp

    Filesize

    1024KB

  • memory/960-175-0x0000000000770000-0x0000000000805000-memory.dmp

    Filesize

    596KB

  • memory/1052-154-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1052-139-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1052-153-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1052-151-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1052-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1052-146-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1052-163-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1052-169-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1052-141-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1052-140-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2160-176-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/2160-191-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/2160-245-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/2160-244-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/2160-243-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/2160-178-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/2160-179-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/2160-180-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/3744-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3744-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3744-121-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3744-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3744-120-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4604-137-0x0000000004100000-0x0000000004195000-memory.dmp

    Filesize

    596KB

  • memory/4624-118-0x00000000024C0000-0x0000000002557000-memory.dmp

    Filesize

    604KB

  • memory/4624-119-0x00000000041B0000-0x00000000042CB000-memory.dmp

    Filesize

    1.1MB