Analysis

  • max time kernel
    123s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-09-2022 12:42

General

  • Target

    32f078fc533c467118c859bc3528c684.exe

  • Size

    688KB

  • MD5

    32f078fc533c467118c859bc3528c684

  • SHA1

    54d1ec4a661e374661f04c2db29e1736dac62ff8

  • SHA256

    6327b5468d18ba40465846c7a08d8560f2fd1b0994ccb9aca821bb79306d6748

  • SHA512

    90c89fa7fa378c8c998628f66c2c5585d55a2a8633cff87535ba318e428f6afe38e75b6032bd80eea5d2cf7b2db6df6de0d16eb53fa990b83d34ee7861e8c1a0

  • SSDEEP

    12288:pBwFivUICQLh3Xng2eULpVrvHBDywuRhL01juFSaNfJc6XdcEV9:6ixnjegV7tLkVok3Q6tVX

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/test3/get.php

Attributes
extension
.ofoq
offline_id
xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1
payload_url
http://rgyui.top/dl/build2.exe
http://winnlinne.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Extracted

Family

vidar

Version

54.7

Botnet

517

C2

https://t.me/trampapanam

https://nerdculture.de/@yoxhyp

Attributes
profile_id
517

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
  • Executes dropped EXE ⋅ 4 IoCs
  • Checks computer location settings ⋅ 2 TTPs 3 IoCs

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

  • 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
  • Kills process with taskkill ⋅ 1 IoCs
  • Suspicious behavior: EnumeratesProcesses ⋅ 6 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 1 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\32f078fc533c467118c859bc3528c684.exe
    "C:\Users\Admin\AppData\Local\Temp\32f078fc533c467118c859bc3528c684.exe"
    Suspicious use of SetThreadContext
    Suspicious use of WriteProcessMemory
    PID:1592
    • C:\Users\Admin\AppData\Local\Temp\32f078fc533c467118c859bc3528c684.exe
      "C:\Users\Admin\AppData\Local\Temp\32f078fc533c467118c859bc3528c684.exe"
      Checks computer location settings
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:220
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\0924e2e9-386a-4928-ba5d-3a3a832382c8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        Modifies file permissions
        PID:4656
      • C:\Users\Admin\AppData\Local\Temp\32f078fc533c467118c859bc3528c684.exe
        "C:\Users\Admin\AppData\Local\Temp\32f078fc533c467118c859bc3528c684.exe" --Admin IsNotAutoStart IsNotTask
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        PID:1220
        • C:\Users\Admin\AppData\Local\Temp\32f078fc533c467118c859bc3528c684.exe
          "C:\Users\Admin\AppData\Local\Temp\32f078fc533c467118c859bc3528c684.exe" --Admin IsNotAutoStart IsNotTask
          Checks computer location settings
          Suspicious behavior: EnumeratesProcesses
          Suspicious use of WriteProcessMemory
          PID:4032
          • C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build2.exe
            "C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build2.exe"
            Executes dropped EXE
            Suspicious use of SetThreadContext
            Suspicious use of WriteProcessMemory
            PID:4112
            • C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build2.exe
              "C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build2.exe"
              Executes dropped EXE
              Checks computer location settings
              Loads dropped DLL
              Checks processor information in registry
              Suspicious behavior: EnumeratesProcesses
              Suspicious use of WriteProcessMemory
              PID:5056
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" S/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build2.exe" & del C:\PrograData\*.dll & exit
                Suspicious use of WriteProcessMemory
                PID:2868
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  Kills process with taskkill
                  Suspicious use of AdjustPrivilegeToken
                  PID:1560
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  Delays execution with timeout.exe
                  PID:952
          • C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build3.exe
            "C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build3.exe"
            Executes dropped EXE
            Suspicious use of WriteProcessMemory
            PID:3720
            • 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"
              Creates scheduled task(s)
              PID:3376
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    Executes dropped EXE
    Suspicious use of WriteProcessMemory
    PID:1840
    • 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"
      Creates scheduled task(s)
      PID:1588

Network

MITRE ATT&CK Matrix

Command and Control

    Credential Access

    Execution

      Exfiltration

        Impact

          Initial Access

            Lateral Movement

              Privilege Escalation

                Replay Monitor

                00:00 00:00

                Downloads

                • C:\ProgramData\mozglue.dll
                  MD5

                  c8fd9be83bc728cc04beffafc2907fe9

                  SHA1

                  95ab9f701e0024cedfbd312bcfe4e726744c4f2e

                  SHA256

                  ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

                  SHA512

                  fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

                • C:\ProgramData\nss3.dll
                  MD5

                  1cc453cdf74f31e4d913ff9c10acdde2

                  SHA1

                  6e85eae544d6e965f15fa5c39700fa7202f3aafe

                  SHA256

                  ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

                  SHA512

                  dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

                • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
                  MD5

                  3229b6929fc9caec79e3e5ad740250c6

                  SHA1

                  d677cb89c767b4c4a444fedfa53dd6c8aa1d7d6e

                  SHA256

                  ece826b5b4484d173ea804773ca9a13c7248d2f6f3c8a7efeea2a9e3691d7628

                  SHA512

                  79b5ab3c41f03f913c0c947c6b6c66f396af97f7f69b3df72622beb9fddf8c6cc1a4f830d3edbd91ec570ce59531f09db54e51a2694a8b330ded69fd932036d1

                • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
                  MD5

                  edcd4c783b2b2c906602519bd8f697f4

                  SHA1

                  fc56fded4065d6960c6507cac4264dfd2b038004

                  SHA256

                  367e0ac4e24f1d1530de05a6abf81d6b572c0546b5aa134c246fa1514582fd90

                  SHA512

                  cb23a82c06211121e39ed0dbec5928b1a85aca7c25f2c060d609350e3a94bf82e9159a2a4d5e67295fc29bac22c95d525ea2461a0000d24c6c4cb630520f68d0

                • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
                  MD5

                  4665a4ad42b3294950d5d60e9e7552aa

                  SHA1

                  ffe280794a2a9e9866eba3ccc67b03d4b3e34421

                  SHA256

                  d45b596cae568382a6bbdc0a620ed8094743814128e352261bff4c7b27af1518

                  SHA512

                  185a8d34162ec9085e5efa1aab1676d7ab97284c85d50f6616d959aada3a397a3af6a13ba2ff49e83d3dc9af8dd067715acea0b466a496b335c86a52a9033074

                • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
                  MD5

                  b3465c827cb364e031bbb88bc1ebb712

                  SHA1

                  d5c18e3da38abb932cd1d373d8964342e3676f5d

                  SHA256

                  ad9e8cd32165c9c08fdf8142f874636e32f9ba7e4818ee8773b6f461e4c9a7cb

                  SHA512

                  7559d569f890e8f89ef7fa5317612d61a0ddf96b7ab5e359e8179b18023c157efab5a319cfdec43d689acc59111a607efca129d1702196ee2f0df0e315060d79

                • C:\Users\Admin\AppData\Local\0924e2e9-386a-4928-ba5d-3a3a832382c8\32f078fc533c467118c859bc3528c684.exe
                  MD5

                  32f078fc533c467118c859bc3528c684

                  SHA1

                  54d1ec4a661e374661f04c2db29e1736dac62ff8

                  SHA256

                  6327b5468d18ba40465846c7a08d8560f2fd1b0994ccb9aca821bb79306d6748

                  SHA512

                  90c89fa7fa378c8c998628f66c2c5585d55a2a8633cff87535ba318e428f6afe38e75b6032bd80eea5d2cf7b2db6df6de0d16eb53fa990b83d34ee7861e8c1a0

                • C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build2.exe
                  MD5

                  bc47d3a0d4a74adc40b3a7035344becb

                  SHA1

                  dd80bbe70106b62ea58924173a364cc936a0b1f4

                  SHA256

                  06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

                  SHA512

                  4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

                • C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build2.exe
                  MD5

                  bc47d3a0d4a74adc40b3a7035344becb

                  SHA1

                  dd80bbe70106b62ea58924173a364cc936a0b1f4

                  SHA256

                  06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

                  SHA512

                  4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

                • C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build2.exe
                  MD5

                  bc47d3a0d4a74adc40b3a7035344becb

                  SHA1

                  dd80bbe70106b62ea58924173a364cc936a0b1f4

                  SHA256

                  06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

                  SHA512

                  4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

                • C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build3.exe
                  MD5

                  9ead10c08e72ae41921191f8db39bc16

                  SHA1

                  abe3bce01cd34afc88e2c838173f8c2bd0090ae1

                  SHA256

                  8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

                  SHA512

                  aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

                • C:\Users\Admin\AppData\Local\b2c34fb4-d25f-4094-bd4a-422a1234beed\build3.exe
                  MD5

                  9ead10c08e72ae41921191f8db39bc16

                  SHA1

                  abe3bce01cd34afc88e2c838173f8c2bd0090ae1

                  SHA256

                  8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

                  SHA512

                  aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

                • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                  MD5

                  9ead10c08e72ae41921191f8db39bc16

                  SHA1

                  abe3bce01cd34afc88e2c838173f8c2bd0090ae1

                  SHA256

                  8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

                  SHA512

                  aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

                • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                  MD5

                  9ead10c08e72ae41921191f8db39bc16

                  SHA1

                  abe3bce01cd34afc88e2c838173f8c2bd0090ae1

                  SHA256

                  8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

                  SHA512

                  aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

                • memory/220-132-0x0000000000000000-mapping.dmp
                • memory/220-134-0x0000000000400000-0x0000000000537000-memory.dmp
                • memory/220-137-0x0000000000400000-0x0000000000537000-memory.dmp
                • memory/220-133-0x0000000000400000-0x0000000000537000-memory.dmp
                • memory/220-140-0x0000000000400000-0x0000000000537000-memory.dmp
                • memory/220-142-0x0000000000400000-0x0000000000537000-memory.dmp
                • memory/952-192-0x0000000000000000-mapping.dmp
                • memory/1220-145-0x00000000022AB000-0x000000000233D000-memory.dmp
                • memory/1220-141-0x0000000000000000-mapping.dmp
                • memory/1560-191-0x0000000000000000-mapping.dmp
                • memory/1588-195-0x0000000000000000-mapping.dmp
                • memory/1592-135-0x000000000223E000-0x00000000022D0000-memory.dmp
                • memory/1592-136-0x0000000002390000-0x00000000024AB000-memory.dmp
                • memory/2868-189-0x0000000000000000-mapping.dmp
                • memory/3376-159-0x0000000000000000-mapping.dmp
                • memory/3720-156-0x0000000000000000-mapping.dmp
                • memory/4032-143-0x0000000000000000-mapping.dmp
                • memory/4032-146-0x0000000000400000-0x0000000000537000-memory.dmp
                • memory/4032-147-0x0000000000400000-0x0000000000537000-memory.dmp
                • memory/4032-152-0x0000000000400000-0x0000000000537000-memory.dmp
                • memory/4032-188-0x0000000000400000-0x0000000000537000-memory.dmp
                • memory/4112-153-0x0000000000000000-mapping.dmp
                • memory/4112-163-0x00000000005AF000-0x00000000005D8000-memory.dmp
                • memory/4112-166-0x0000000000500000-0x0000000000547000-memory.dmp
                • memory/4656-138-0x0000000000000000-mapping.dmp
                • memory/5056-161-0x0000000000400000-0x000000000045B000-memory.dmp
                • memory/5056-190-0x0000000000400000-0x000000000045B000-memory.dmp
                • memory/5056-160-0x0000000000000000-mapping.dmp
                • memory/5056-164-0x0000000000400000-0x000000000045B000-memory.dmp
                • memory/5056-168-0x0000000061E00000-0x0000000061EF3000-memory.dmp
                • memory/5056-167-0x0000000000400000-0x000000000045B000-memory.dmp
                • memory/5056-165-0x0000000000400000-0x000000000045B000-memory.dmp