Analysis

  • max time kernel
    145s
  • max time network
    127s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    04-04-2023 05:06

General

  • Target

    94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c.exe

  • Size

    746KB

  • MD5

    8c8625cea00fb163ef17f463a8b1d40f

  • SHA1

    382b606dd044d621ea76ff49cd4c24fb4720030b

  • SHA256

    94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c

  • SHA512

    43a91081a67c3111352fa254228b7849f19edb12b028f23ce2b0e314dabe3c5a38abcda61c15920c78385a3fc6dd8edad057598bfb4d0b1598c9dddfc9c042b0

  • SSDEEP

    12288:lIkJ7TnJj5i2HBhAiPLURbeXhxFSu+WjUYR2ybOIM+XHnVrgoDKJJDq:lNnJjA27AuU895sLOJg/fDq

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test2/get.php

Attributes
  • extension

    .nifr

  • 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: 0679SUjhw

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 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). 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\94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c.exe
    "C:\Users\Admin\AppData\Local\Temp\94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3552
    • C:\Users\Admin\AppData\Local\Temp\94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c.exe
      "C:\Users\Admin\AppData\Local\Temp\94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2592
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e309d088-3316-43f4-8e4e-b72bef8ce387" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4412
      • C:\Users\Admin\AppData\Local\Temp\94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c.exe
        "C:\Users\Admin\AppData\Local\Temp\94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4120
        • C:\Users\Admin\AppData\Local\Temp\94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c.exe
          "C:\Users\Admin\AppData\Local\Temp\94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4764
          • C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build2.exe
            "C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4728
            • C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build2.exe
              "C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1260
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4936
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:652
          • C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build3.exe
            "C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3812
            • 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:4852
  • 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:820
    • 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:4144

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

    b636591fc66c9d2a1a425dd29939147f

    SHA1

    0d48b7a8df06ce304c8a8b1c1dae5912c6b666f4

    SHA256

    95c629cd39afdd4a9e98a94b6ea6a85c3e692c27c77d963899177b55948b72d1

    SHA512

    e6be6c7ec5a010a3a3509a567891a0f338bf19e84649f5240e7e500cfc87c752cb28ca6a54aa93d896f4cdf2eac46775bf1165b0085eab23176b237d1bd9ad31

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

    1KB

    MD5

    a8c5ec082ddbfa706307d295f25ae6fa

    SHA1

    9d59be752069e201236a1edec3c3b374afc1b382

    SHA256

    c6e194e6a673e59490dfe69c0ea81bff16de4cb1b9b82408dc2738ec7efe488c

    SHA512

    80441dd81f5edc564f50c550a2b93db1bcf7d809811f8df43896d4d3d85c4bda95e735e67f82edf951f2601c84119f8a0769df3643ec777172f1134132ec6dd8

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

    488B

    MD5

    3a537645cfd838a3d88baf360b606db8

    SHA1

    4e25c106b4bf9618ff381861e78ff09288744baf

    SHA256

    bc4b33b5734fcec135481beb937ddd252ef8bf58d5e2150934e87b263c05bac8

    SHA512

    43d00c4b1a65314e11c63f2a0a5e96c19cf82fabbd3b59236eb9c55e8a3e84aba2d4c26434fd9ca1807e567851d5ef5f2ca24fa9c7f167dea2bc4559679d0fbc

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

    482B

    MD5

    5805cab0d1b9eeb3d5a2909bfd41c047

    SHA1

    5d953ba2e0583db818438370fe3956c65bb3eca0

    SHA256

    fa38af6063c6e73bca413569ccdc3595d5dbf15d750ddab8c66207a5d098d3fd

    SHA512

    b54580641aaa98382980d3ed5b435e7d1e917fb79afab3291a4f230095c6029a5732188e0e25237a30ede029afe607f6e808a74fcdcf8bdcecae8cc0b11d368c

  • C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build2.exe
    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build3.exe
    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\20189337-cd26-42b5-8e2d-c9d3b107aa1d\build3.exe
    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\e309d088-3316-43f4-8e4e-b72bef8ce387\94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c.exe
    Filesize

    746KB

    MD5

    8c8625cea00fb163ef17f463a8b1d40f

    SHA1

    382b606dd044d621ea76ff49cd4c24fb4720030b

    SHA256

    94fed02b86210ba63625766f58a6b1c14b2a9e93d0b65111d7c6ed463e224e7c

    SHA512

    43a91081a67c3111352fa254228b7849f19edb12b028f23ce2b0e314dabe3c5a38abcda61c15920c78385a3fc6dd8edad057598bfb4d0b1598c9dddfc9c042b0

  • 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/1260-163-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1260-164-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1260-243-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1260-232-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1260-187-0x0000000061E00000-0x0000000061EF3000-memory.dmp
    Filesize

    972KB

  • memory/1260-167-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1260-161-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1260-245-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/1260-246-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2592-124-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2592-121-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2592-133-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2592-118-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2592-119-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3552-120-0x00000000027B0000-0x00000000028CB000-memory.dmp
    Filesize

    1.1MB

  • memory/4728-165-0x0000000002CC0000-0x0000000002D17000-memory.dmp
    Filesize

    348KB

  • memory/4764-173-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4764-137-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4764-138-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4764-166-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4764-152-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4764-151-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4764-149-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4764-145-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4764-144-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4764-143-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB