Analysis

  • max time kernel
    140s
  • max time network
    142s
  • platform
    windows10-1703_x64
  • resource
    win10-20230703-en
  • resource tags

    arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system
  • submitted
    24/07/2023, 12:34

General

  • Target

    545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1.exe

  • Size

    792KB

  • MD5

    bd130e0553c9fd070e0a174db55ca59b

  • SHA1

    302c040ea130757b0015c37103ff06d1dafe81d3

  • SHA256

    545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1

  • SHA512

    d8a4ceb5e878d84a30b072c5821a002fcbbd1bc61285fc5cce576e6c61f10b8330266fdc9c5743aa8adc911adfe6cc17021931a6e3a9870255dc1764e03febd9

  • SSDEEP

    12288:+G1KOss66w1kGVy3B78fnFEjHdITWL7cJznt0VCFiUyktp2:L936hkx8fnFEDdYWLAd3n2

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
  • 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\545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1.exe
    "C:\Users\Admin\AppData\Local\Temp\545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5092
    • C:\Users\Admin\AppData\Local\Temp\545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1.exe
      "C:\Users\Admin\AppData\Local\Temp\545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4812
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\8225a6fa-3701-4f3c-acf5-c091b257679a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3052
      • C:\Users\Admin\AppData\Local\Temp\545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1.exe
        "C:\Users\Admin\AppData\Local\Temp\545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3960
        • C:\Users\Admin\AppData\Local\Temp\545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1.exe
          "C:\Users\Admin\AppData\Local\Temp\545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4120
          • C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\build2.exe
            "C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2052
            • C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\build2.exe
              "C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:604
          • C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\build3.exe
            "C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3056
            • 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:3728
  • 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:3512
    • 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:5100

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    debbf14f3483068c85dbb41089275387

    SHA1

    53c67f0496489a8bf83e645035b9e030fe22f052

    SHA256

    d62934313eec30d6276854f81ed0ad0fa455c13032f23c49dc5e931e53aa24fd

    SHA512

    ef0f3231d777612c12fa32f6d9fd8c24f3147ab0d44e660ceb86d6cd43120be1396ae351d14305ad41d10799cb1fba9ae7626e6970ec840f4e30b4934a49971d

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

    Filesize

    1KB

    MD5

    9f4dbb9c92a85c4ef5093a2df64ac230

    SHA1

    83acdef3b775ddcea8a50a04e8f1e8afaa6e0d22

    SHA256

    f29be229662b3201af3c58d4fcccb93da75f9cc44a2b7c2e3086302bb2bc1425

    SHA512

    25a85055583e7d008a25add9d4976e8255b01e2dce1a90b75c63c8eff8ee56a94ef35852210cbec1298fc905325d295c73a78f9a8e85ffdfc98d8a2b0896150b

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

    Filesize

    488B

    MD5

    266ddf7bca6c14679e58e3446bf77018

    SHA1

    f74ac41fefa5c46b3d9560ea52dba7bc6b141b20

    SHA256

    56e37957938cd9a043e730f64731a572df4a97b96110fa9491531ebb6167dd86

    SHA512

    b565c829789edbec5fff4f56455e61e8988e11055cfd326e673adfa48520e5ae8904930e91c2c80213c5cc85532b75b750e86a7eb0f308512214c693cc3c2032

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

    Filesize

    482B

    MD5

    151dfa911750f62d7652b6df3789b0f0

    SHA1

    ff7a01cc765c1d8f629eb30d18a0e512b59dc8fa

    SHA256

    22175a01be6cfa2398bc67410c16532b95763dd463a850d06239c523fef357d9

    SHA512

    ee759cebad19bf7f813e88dde9c2192684270e61e40621a7bec69f8f92fc1be9757282842ed7a0835a5d60aa395bc3d57c924a27cea505c254183f362263d991

  • C:\Users\Admin\AppData\Local\8225a6fa-3701-4f3c-acf5-c091b257679a\545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1.exe

    Filesize

    792KB

    MD5

    bd130e0553c9fd070e0a174db55ca59b

    SHA1

    302c040ea130757b0015c37103ff06d1dafe81d3

    SHA256

    545ec152a30ba2bb36e1925ec9b12db876773e9610ded196e63e2464723ff4a1

    SHA512

    d8a4ceb5e878d84a30b072c5821a002fcbbd1bc61285fc5cce576e6c61f10b8330266fdc9c5743aa8adc911adfe6cc17021931a6e3a9870255dc1764e03febd9

  • C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\build2.exe

    Filesize

    524KB

    MD5

    5c08a40f82908735b187705b49de1fc3

    SHA1

    6e108f3f6611f46941869d7fcbe02c47219c0523

    SHA256

    7539d1cff13c822fbffc73cb9416dd8ae40d79f59b03b1e77b0909e182b6bd2b

    SHA512

    76d06c1686e1ec9bec07188769e3a851b98f042e962eee74bd195e156d15fd9ebc4997b10af092561178ef3918e86dd620d7070934db7b1f5a5449c19cfbe1fd

  • C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\ca0b082a-f662-4995-b83f-2a0aa865c0b9\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/604-194-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/604-182-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/604-181-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/604-248-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/604-179-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/604-247-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/604-183-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/604-246-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/2052-178-0x0000000002210000-0x00000000022A5000-memory.dmp

    Filesize

    596KB

  • memory/2052-177-0x0000000000610000-0x0000000000710000-memory.dmp

    Filesize

    1024KB

  • memory/3960-140-0x0000000002610000-0x00000000026A3000-memory.dmp

    Filesize

    588KB

  • memory/4120-143-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4120-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4120-166-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4120-157-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4120-156-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4120-154-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4120-150-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4120-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4120-144-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4120-172-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4812-125-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4812-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4812-126-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4812-124-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4812-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5092-121-0x0000000004060000-0x00000000040F4000-memory.dmp

    Filesize

    592KB

  • memory/5092-122-0x00000000042E0000-0x00000000043FB000-memory.dmp

    Filesize

    1.1MB