Analysis

  • max time kernel
    146s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-03-2023 19:21

General

  • Target

    1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424.exe

  • Size

    717KB

  • MD5

    266e7b6cc09bf7f9882ffe0d707ef991

  • SHA1

    74df06791434ea2d6fb591ff428ec0e4ef1a89c4

  • SHA256

    1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424

  • SHA512

    55381313db92c277ed81dcd3519ac5901d398166c95ee2cf7abe6915451f23766229fb506ec48561395fc7f6e1305c6fb7da8187066c73c36ed21104091a16ec

  • SSDEEP

    12288:jJnToBCmzOxHTmPl1cXKe4MV9IQAvqlkU32z7u1vJxwEjJhqy:VnyNzJN1cyMVsvWn2/uDxwEdh

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .niwm

  • offline_id

    FCP2fiITr4rryFhFBnA59GMgwES5CunmcbPc76t1

  • 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-v8HcfXTy5x 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: support@freshmail.top Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0681SUjhw

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.2

Botnet

5df88deb5dde677ba658b77ad5f60248

C2

https://steamcommunity.com/profiles/76561199489580435

https://t.me/tabootalks

Attributes
  • profile_id_v2

    5df88deb5dde677ba658b77ad5f60248

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79

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 3 IoCs

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

  • 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\1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424.exe
    "C:\Users\Admin\AppData\Local\Temp\1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1932
    • C:\Users\Admin\AppData\Local\Temp\1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424.exe
      "C:\Users\Admin\AppData\Local\Temp\1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:228
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\d4c25435-83d8-402b-84c7-482e96a4f6df" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3852
      • C:\Users\Admin\AppData\Local\Temp\1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424.exe
        "C:\Users\Admin\AppData\Local\Temp\1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4756
        • C:\Users\Admin\AppData\Local\Temp\1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424.exe
          "C:\Users\Admin\AppData\Local\Temp\1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2392
          • C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build2.exe
            "C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4404
            • C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build2.exe
              "C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build2.exe"
              6⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4640
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1276
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:2236
          • C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build3.exe
            "C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:552
            • 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:436
  • 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:896
    • 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:920

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

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

    ee7ad9d8f28e0558a94e667206e8a271

    SHA1

    b49a079526da92d55f2d1bc66659836c0f90a086

    SHA256

    9eeeef2cbd8192c6586ffa64114ad0c3e8e5ab3a73817e1044895517c6eba712

    SHA512

    0c1596e7b8e54e0cce8139a339c4c34f5f9391ce0b7051673abe7a43f174f292e0d3267b1ce1186247535941b416962b6fe63cb03855ddea254cf09fddad3223

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

    1KB

    MD5

    6a3b8331e801f083b403b0857ed8d574

    SHA1

    48d275731f1dbd0630d1ca55a1b05f149a011d1f

    SHA256

    98651a2da4a4613bc2a03c4128926fe6b05f1af8a7a21e1fedec75db013706a0

    SHA512

    7527b8857707c8822e4b7f5049ddc9b4c49933e68535690746d84b7f0187a10f36e874719bdb1bf3ba8b035568a7cbafd687b80c4621dc35552d73f7e497071d

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

    488B

    MD5

    47487b90839d853b1b0174ba4efe038d

    SHA1

    12d4a69e709573ba304d246eca7a8dd30e784ac0

    SHA256

    34a928f25b2f136abd7e597daec9a93a7611fb547b005cb5c8e887c11623c970

    SHA512

    44d97e9b7a2b0c8679d3e4a362d4e45d8d287c16ffa4f306a30e4af73ef183f5a75edff3f0f73f4874493edb59f65965afb45f57b477949d81089c85d4fd4a84

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

    482B

    MD5

    4c406a37384c6ccddab8eafac664bc67

    SHA1

    a5279829da4a6d6c74cb8ad1e187fd9be79622fa

    SHA256

    aa19d9e4d7b3e3754a37253d3e9ead07e01004158880aad8cc3458d5bf5ffb20

    SHA512

    bb012ed1a041c29d64a5d309c6dbd1bead4b6ec687691964fec0b13c57bc2dca292fa011945fea4911479df2255585271fe03378a8d737c0f24027a58ce257ec

  • C:\Users\Admin\AppData\Local\d4c25435-83d8-402b-84c7-482e96a4f6df\1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424.exe
    Filesize

    717KB

    MD5

    266e7b6cc09bf7f9882ffe0d707ef991

    SHA1

    74df06791434ea2d6fb591ff428ec0e4ef1a89c4

    SHA256

    1bc15cdb2bd1270948ad838846721431842ffb686a90401dea803d2406273424

    SHA512

    55381313db92c277ed81dcd3519ac5901d398166c95ee2cf7abe6915451f23766229fb506ec48561395fc7f6e1305c6fb7da8187066c73c36ed21104091a16ec

  • C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build3.exe
    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\build3.exe
    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\e1b525c7-17a8-4f43-9196-e29e90909934\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

  • memory/228-137-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/228-135-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/228-150-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/228-134-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/228-138-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1932-136-0x0000000002400000-0x000000000251B000-memory.dmp
    Filesize

    1.1MB

  • memory/2392-160-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2392-159-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2392-161-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2392-165-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2392-168-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2392-167-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2392-189-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2392-169-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2392-153-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2392-195-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2392-154-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4404-184-0x0000000002E10000-0x0000000002E67000-memory.dmp
    Filesize

    348KB

  • memory/4640-199-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4640-185-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4640-211-0x0000000061E00000-0x0000000061EF3000-memory.dmp
    Filesize

    972KB

  • memory/4640-183-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4640-181-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4640-280-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4640-281-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4640-282-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/4640-283-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB