Analysis

  • max time kernel
    144s
  • max time network
    143s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    24-04-2023 03:50

General

  • Target

    ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713.exe

  • Size

    734KB

  • MD5

    2329d6139218840ee8c98a7c49e1ca26

  • SHA1

    f8f3a8a46252c19a2a39fdc879c70b6a38a0665c

  • SHA256

    ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713

  • SHA512

    3b1525cc1e68fe3483e38e4e1740eba0b3f1533c499473b1b6ef86f9efa85877962b81c77c91e178f6fba7508a2485087b15774b8e72e5cc0582845bde97021b

  • SSDEEP

    12288:9JaSAjGw7tQtd87dFmoizhtxaI1knCO8tymN/HqmZvII7d:/aSACutQSFmoiPxazGNK0II

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .coza

  • offline_id

    O8Ao46dcCReRPC4I1PGMYsRFFc9WI5eOp0O3MFt1

  • 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-EPBZCVAS8s 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: 0693JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.5

Botnet

bf58e1879f88b222ba2391682babf9d8

C2

https://steamcommunity.com/profiles/76561199497218285

https://t.me/tg_duckworld

Attributes
  • profile_id_v2

    bf58e1879f88b222ba2391682babf9d8

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36 Vivaldi/3.7

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.

  • 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\ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713.exe
    "C:\Users\Admin\AppData\Local\Temp\ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3640
    • C:\Users\Admin\AppData\Local\Temp\ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713.exe
      "C:\Users\Admin\AppData\Local\Temp\ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4172
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c2404201-78b5-4914-99a6-66f93f3d8f77" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2120
      • C:\Users\Admin\AppData\Local\Temp\ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713.exe
        "C:\Users\Admin\AppData\Local\Temp\ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4260
        • C:\Users\Admin\AppData\Local\Temp\ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713.exe
          "C:\Users\Admin\AppData\Local\Temp\ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2052
          • C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build2.exe
            "C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4852
            • C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build2.exe
              "C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1136
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4928
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4968
          • C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build3.exe
            "C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4924
            • 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:2568
  • 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:532
    • 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:1860

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

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

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

    2KB

    MD5

    0a0291b9bdf89c7e506366a8be70a80c

    SHA1

    a30ddab885654862ba0be0159155bc99945c053f

    SHA256

    31631ce5dfb41c09757fbd14367f9e46dc012eed1b8d462e933a34c102441272

    SHA512

    b0c29fd46693496d0bd726db2a615049c8cc2996bc38132a57878706a8ee022bbb964b3f9c9bb67e520a82f2144d352655287e015f3617c85fabf72f752e30d5

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

    1KB

    MD5

    89d78eb124083dfc7d87ddbf1acdff7f

    SHA1

    069a3b78c24057041ccbd928672113f95523a17d

    SHA256

    ad777b3e2ac62663252cfcd7495e832f1a043bc3e0e4ecda3abf1c291eedcb0c

    SHA512

    34632fe51ac8fb71e52dd7490e01a3e92bbcfa545cd0309d50cb1706f336e09d754b9df04913e6a0f91cbc374cdb365da29c0b29768b56410e82d310b5ba6ebe

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

    488B

    MD5

    a3749f6b59ff78f2362fa52dfd1d1720

    SHA1

    e7a2633ce9a2c054b1a7d924dac25d07edc96041

    SHA256

    b95d5854fc5a30fbb34e6aff1956e1ae7c10281ee3e9b5ac0d473f0da36ce59c

    SHA512

    7f5542020d2057a9a9030b39f4fff855d9fe88e1d6e92961e716e6bb8e49cbbee55cc452172c34530d50516da407ed3a80085a5cfcbefd5bb9b4c2811847d14c

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

    482B

    MD5

    43b73058b4154f1627440b9300084d4f

    SHA1

    fead1abf76b94d32c603b533b78f8457175eef33

    SHA256

    d17b3264c6f49d01171cd1c2de92b0f43648658988ade1c233c8da0ad540bce4

    SHA512

    b828877c234318b9c7ec26bfe7479416397e3cd63b81916e6a5ba253f7a506287221fe09884f67d6983a02f9dd73c8dcdcb6a622eb69c4018ebccc60645ad9a8

  • C:\Users\Admin\AppData\Local\c2404201-78b5-4914-99a6-66f93f3d8f77\ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713.exe
    Filesize

    734KB

    MD5

    2329d6139218840ee8c98a7c49e1ca26

    SHA1

    f8f3a8a46252c19a2a39fdc879c70b6a38a0665c

    SHA256

    ebbbef51c2df5f878343dadf78c45ee1fa5c575497d336bde332771933c64713

    SHA512

    3b1525cc1e68fe3483e38e4e1740eba0b3f1533c499473b1b6ef86f9efa85877962b81c77c91e178f6fba7508a2485087b15774b8e72e5cc0582845bde97021b

  • C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build2.exe
    Filesize

    324KB

    MD5

    d0eb40fe08f409805aed3f5312bfb5b8

    SHA1

    5f7942d58673854f01d25c3831efcba4182882e9

    SHA256

    2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

    SHA512

    ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

  • C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build2.exe
    Filesize

    324KB

    MD5

    d0eb40fe08f409805aed3f5312bfb5b8

    SHA1

    5f7942d58673854f01d25c3831efcba4182882e9

    SHA256

    2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

    SHA512

    ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

  • C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build2.exe
    Filesize

    324KB

    MD5

    d0eb40fe08f409805aed3f5312bfb5b8

    SHA1

    5f7942d58673854f01d25c3831efcba4182882e9

    SHA256

    2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

    SHA512

    ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

  • C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\build3.exe
    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\ce4e1204-cb68-4ab3-9d84-1ea374f6130a\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/1136-165-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1136-189-0x0000000061E00000-0x0000000061EF3000-memory.dmp
    Filesize

    972KB

  • memory/1136-231-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1136-244-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1136-246-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1136-169-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1136-163-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1136-247-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1136-167-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2052-145-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2052-146-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2052-168-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2052-140-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2052-175-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2052-147-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2052-154-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2052-153-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2052-151-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2052-139-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3640-122-0x0000000004A50000-0x0000000004B6B000-memory.dmp
    Filesize

    1.1MB

  • memory/4172-121-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4172-123-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4172-124-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4172-135-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4172-120-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4852-166-0x0000000001F90000-0x0000000001FE7000-memory.dmp
    Filesize

    348KB