Analysis

  • max time kernel
    83s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2023, 05:32

General

  • Target

    7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344.exe

  • Size

    678KB

  • MD5

    594962b829b145c4993a8bcdce043abb

  • SHA1

    25513b18991b375560d6c833f4fc15515a5d1db2

  • SHA256

    7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344

  • SHA512

    6ca0c6761815c4f7022f372a8cfd3ea4241c96207ac5a0175e1e0aac71c41454639ee2d0e26abc746fe4218a24af1319fde538def226988a5fa2590773d16553

  • SSDEEP

    12288:nCCj2qORSxVrUdkBbrCUtthllHDXTD4ZqTKf50ePAZQlefu:V5thHDXyqTYf0G

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .hhmm

  • offline_id

    dMMXkgwQTycP13C5xwPbHDSzhx1ZxiPgIMZXewt1

  • payload_url

    http://uaery.top/dl/build2.exe

    http://bihsy.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-UQkYLBSiQ4 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: 0646JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

2.5

Botnet

19

Attributes
  • profile_id

    19

Signatures

  • Detected Djvu ransomware 10 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\7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344.exe
    "C:\Users\Admin\AppData\Local\Temp\7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5020
    • C:\Users\Admin\AppData\Local\Temp\7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344.exe
      "C:\Users\Admin\AppData\Local\Temp\7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4440
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\3ea3e8d7-2e8a-4647-812d-a0188c51a947" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1208
      • C:\Users\Admin\AppData\Local\Temp\7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344.exe
        "C:\Users\Admin\AppData\Local\Temp\7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4452
        • C:\Users\Admin\AppData\Local\Temp\7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344.exe
          "C:\Users\Admin\AppData\Local\Temp\7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1360
          • C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\build2.exe
            "C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3796
            • C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\build2.exe
              "C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\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:4964
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3180
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1568
          • C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\build3.exe
            "C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4812
            • 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:3296
  • 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:1260
    • 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:4552

Network

MITRE ATT&CK Enterprise v6

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\3538626A1FCCCA43C7E18F220BDD9B02

    Filesize

    929B

    MD5

    bfe0520a06892a0c27b6b8ff81e7f7c5

    SHA1

    2d38daf115e7c825c2a447c1c6324dfa0626bb70

    SHA256

    52c532cebeaf14a197c765fe8e3c3fa39d6cd00bc97b3a0cf7ba4f816f2b9b67

    SHA512

    b992a4f89aa4cfb8fc279c821514bc43b730a81afb9cdad2f107e19b2c4b8b92a7fc91229dd73753a7fedc5452369fc8af057eebd2a8ee30ea1d2dc5651ede45

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

    Filesize

    1KB

    MD5

    993e8b8577c97c7e05f2f14fc91b6822

    SHA1

    115472cc6481473f1c16844a855938390134bb2e

    SHA256

    0455176415d825ae6af414e9e4ea77bb8e81b521996bed8f14c3b72c24a953d4

    SHA512

    df59164579d3ee35fa3a89db6f5f3c7754069fd6d2d4014d87a9be9dbbc960ee52d0b9701174dada349491a9d3ebfb025ba284fee5da9998da5ca224d9f249cc

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3538626A1FCCCA43C7E18F220BDD9B02

    Filesize

    274B

    MD5

    08782d7c19b03f793380dd1401044e0f

    SHA1

    f7a49bd43b99946a351bbc808c0cd85e66ff7acf

    SHA256

    e18e44d8c77d48f23f0f3f13dca2c20bb4f29c56c50f2bec9cc25517a1ede9bf

    SHA512

    29fe74ee56d57b0bf3aa0114cbda890812b61ad87166684b8c56b79a866bf600dd41d2dcd59b51302bff8c93d2214db8d9c5bb4d466fb06b537d9b68c5eb0113

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

    Filesize

    482B

    MD5

    af0ceaeb0fb416383b5a3067f753ddc9

    SHA1

    f6198f717754ae52c280e25be04197cc20de7bcb

    SHA256

    0780921d279cdc46161f4ac920a1c1f23639720dca06bbb872944c4f949b0502

    SHA512

    04cdf62450cdfc6b28f7ad0d0e8a86be5e2592c1204b13fe19560a9679ffb57bbd0f2caa2918b05d8b30a3882d90699332727b40a2c697a8f9ea874ce62de61a

  • C:\Users\Admin\AppData\Local\3ea3e8d7-2e8a-4647-812d-a0188c51a947\7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344.exe

    Filesize

    678KB

    MD5

    594962b829b145c4993a8bcdce043abb

    SHA1

    25513b18991b375560d6c833f4fc15515a5d1db2

    SHA256

    7907a84d9032b484ea58c7dde344a1747db36c55de2ecc4d9b05d84df2683344

    SHA512

    6ca0c6761815c4f7022f372a8cfd3ea4241c96207ac5a0175e1e0aac71c41454639ee2d0e26abc746fe4218a24af1319fde538def226988a5fa2590773d16553

  • C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\build2.exe

    Filesize

    325KB

    MD5

    4c9fdfbf316f37dbcc7314e5641f9a9a

    SHA1

    7fa01df0e5420f9e5b69486550460e839fd0f3a3

    SHA256

    e661e53f429cd22e30ca6fb368f3e011e76264892f4e718c75cb3636f4f2e611

    SHA512

    b22c60d27ed5457677645a2b8669cd1958cc18a021e19dcf1d1a3a88ed63cd4eb749b1fe8798f651dcc5595d019ceb3cb38eae7a07ab73098eee502dbee5c32b

  • C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\build2.exe

    Filesize

    325KB

    MD5

    4c9fdfbf316f37dbcc7314e5641f9a9a

    SHA1

    7fa01df0e5420f9e5b69486550460e839fd0f3a3

    SHA256

    e661e53f429cd22e30ca6fb368f3e011e76264892f4e718c75cb3636f4f2e611

    SHA512

    b22c60d27ed5457677645a2b8669cd1958cc18a021e19dcf1d1a3a88ed63cd4eb749b1fe8798f651dcc5595d019ceb3cb38eae7a07ab73098eee502dbee5c32b

  • C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\build2.exe

    Filesize

    325KB

    MD5

    4c9fdfbf316f37dbcc7314e5641f9a9a

    SHA1

    7fa01df0e5420f9e5b69486550460e839fd0f3a3

    SHA256

    e661e53f429cd22e30ca6fb368f3e011e76264892f4e718c75cb3636f4f2e611

    SHA512

    b22c60d27ed5457677645a2b8669cd1958cc18a021e19dcf1d1a3a88ed63cd4eb749b1fe8798f651dcc5595d019ceb3cb38eae7a07ab73098eee502dbee5c32b

  • C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\cf4ef5a9-1335-4b35-b6be-396913d74ca6\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/1360-188-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1360-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1360-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1360-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3796-166-0x0000000000810000-0x000000000086E000-memory.dmp

    Filesize

    376KB

  • memory/3796-164-0x0000000000898000-0x00000000008CC000-memory.dmp

    Filesize

    208KB

  • memory/4440-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4440-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4440-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4440-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4440-133-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4452-146-0x0000000002368000-0x00000000023F9000-memory.dmp

    Filesize

    580KB

  • memory/4964-165-0x0000000000400000-0x0000000000472000-memory.dmp

    Filesize

    456KB

  • memory/4964-168-0x0000000050BC0000-0x0000000050CB3000-memory.dmp

    Filesize

    972KB

  • memory/4964-167-0x0000000000400000-0x0000000000472000-memory.dmp

    Filesize

    456KB

  • memory/4964-190-0x0000000000400000-0x0000000000472000-memory.dmp

    Filesize

    456KB

  • memory/4964-163-0x0000000000400000-0x0000000000472000-memory.dmp

    Filesize

    456KB

  • memory/4964-161-0x0000000000400000-0x0000000000472000-memory.dmp

    Filesize

    456KB

  • memory/5020-136-0x0000000002680000-0x000000000279B000-memory.dmp

    Filesize

    1.1MB

  • memory/5020-135-0x000000000255D000-0x00000000025EE000-memory.dmp

    Filesize

    580KB