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Analysis

  • max time kernel
    32s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    05/10/2024, 09:49 UTC

General

  • Target

    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe

  • Size

    2.3MB

  • MD5

    81ea5574893bea66072640f30c7c0060

  • SHA1

    55309a096c4956c808cc5d8e327c6f75fafe24c4

  • SHA256

    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233a

  • SHA512

    575bb135a237194cc62ec4f893e3c6c4b165160383be62cf5f6265c2c67928c102e1b75b82493fa4983b35909be3428a1908cb1cd47080c6c669c671fff498bb

  • SSDEEP

    3072:6R+9MwiQ1/d0kzv4NmVcc18DM74+c9JDpdN3f5Bl5xoaq0jcp8HraqVmQdwuA:6RKMreKkzwNemDM7Ab3ix8F7wu

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 2 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Deletes itself 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Checks installed software on the system 1 TTPs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 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.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe
    "C:\Users\Admin\AppData\Local\Temp\88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe" & rd /s /q "C:\ProgramData\ECGIIIDAKJDH" & exit
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2080
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 10
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:936

Network

  • flag-us
    DNS
    t.me
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.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
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.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
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.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: Sat, 05 Oct 2024 09:49:55 GMT
    Content-Length: 34828
    Connection: keep-alive
    Set-Cookie: sessionid=fc8ce8d544ba6a9e983299ea; Path=/; Secure; SameSite=None
    Set-Cookie: steamCountry=GB%7Ce15d564837abb028acb4e114150d704d; Path=/; Secure; HttpOnly; SameSite=None
  • flag-us
    DNS
    gacan.zapto.org
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe
    Remote address:
    8.8.8.8:53
    Request
    gacan.zapto.org
    IN A
    Response
  • flag-us
    DNS
    crl.microsoft.com
    Remote address:
    8.8.8.8:53
    Request
    crl.microsoft.com
    IN A
    Response
    crl.microsoft.com
    IN CNAME
    crl.www.ms.akadns.net
    crl.www.ms.akadns.net
    IN CNAME
    a1363.dscg.akamai.net
    a1363.dscg.akamai.net
    IN A
    2.19.117.18
    a1363.dscg.akamai.net
    IN A
    2.19.117.22
  • flag-gb
    GET
    http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
    Remote address:
    2.19.117.18:80
    Request
    GET /pki/crl/products/MicRooCerAut2011_2011_03_22.crl HTTP/1.1
    Connection: Keep-Alive
    Accept: */*
    If-Modified-Since: Wed, 01 May 2024 09:28:59 GMT
    User-Agent: Microsoft-CryptoAPI/6.1
    Host: crl.microsoft.com
    Response
    HTTP/1.1 200 OK
    Content-Length: 1036
    Content-Type: application/octet-stream
    Content-MD5: 8M9bF5Tsp81z+cAg2quO8g==
    Last-Modified: Thu, 26 Sep 2024 02:21:11 GMT
    ETag: 0x8DCDDD1E3AF2C76
    Server: Windows-Azure-Blob/1.0 Microsoft-HTTPAPI/2.0
    x-ms-request-id: b28c4ea1-d01e-0016-0ebc-0fa13d000000
    x-ms-version: 2009-09-19
    x-ms-lease-status: unlocked
    x-ms-blob-type: BlockBlob
    Date: Sat, 05 Oct 2024 09:50:25 GMT
    Connection: keep-alive
  • flag-us
    DNS
    www.microsoft.com
    Remote address:
    8.8.8.8:53
    Request
    www.microsoft.com
    IN A
    Response
    www.microsoft.com
    IN CNAME
    www.microsoft.com-c-3.edgekey.net
    www.microsoft.com-c-3.edgekey.net
    IN CNAME
    www.microsoft.com-c-3.edgekey.net.globalredir.akadns.net
    www.microsoft.com-c-3.edgekey.net.globalredir.akadns.net
    IN CNAME
    e13678.dscb.akamaiedge.net
    e13678.dscb.akamaiedge.net
    IN A
    2.17.5.133
  • flag-gb
    GET
    http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl
    Remote address:
    2.17.5.133:80
    Request
    GET /pkiops/crl/MicCodSigPCA2011_2011-07-08.crl HTTP/1.1
    Connection: Keep-Alive
    Accept: */*
    If-Modified-Since: Mon, 03 Jun 2024 21:25:24 GMT
    User-Agent: Microsoft-CryptoAPI/6.1
    Host: www.microsoft.com
    Response
    HTTP/1.1 200 OK
    Content-Length: 1078
    Content-Type: application/octet-stream
    Content-MD5: cyz+t2uRxNE5eKALjGZu1w==
    Last-Modified: Sun, 18 Aug 2024 00:23:49 GMT
    ETag: 0x8DCBF1C07FCB4BF
    x-ms-request-id: f8a60053-701e-000f-593e-f12186000000
    x-ms-version: 2009-09-19
    x-ms-lease-status: unlocked
    x-ms-blob-type: BlockBlob
    Date: Sat, 05 Oct 2024 09:50:25 GMT
    Connection: keep-alive
    TLS_version: UNKNOWN
    ms-cv: CASMicrosoftCVabd56f82.0
    ms-cv-esi: CASMicrosoftCVabd56f82.0
    X-RTag: RT
  • 149.154.167.99:443
    t.me
    tls
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe
    385 B
    219 B
    5
    5
  • 149.154.167.99:443
    t.me
    tls
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe
    347 B
    219 B
    5
    5
  • 149.154.167.99:443
    t.me
    tls
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe
    288 B
    219 B
    5
    5
  • 149.154.167.99:443
    t.me
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe
    190 B
    92 B
    4
    2
  • 104.82.234.109:443
    https://steamcommunity.com/profiles/76561199768374681
    tls, http
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe
    1.4kB
    42.2kB
    22
    36

    HTTP Request

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

    HTTP Response

    200
  • 2.19.117.18:80
    http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
    http
    399 B
    1.7kB
    4
    4

    HTTP Request

    GET http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

    HTTP Response

    200
  • 2.17.5.133:80
    http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl
    http
    393 B
    1.7kB
    4
    4

    HTTP Request

    GET http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl

    HTTP Response

    200
  • 8.8.8.8:53
    t.me
    dns
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.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
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe
    64 B
    80 B
    1
    1

    DNS Request

    steamcommunity.com

    DNS Response

    104.82.234.109

  • 8.8.8.8:53
    gacan.zapto.org
    dns
    88f413c96604670ea6b1184c236b390468e9d4b16d35ed02701409b4a6f0233aN.exe
    61 B
    121 B
    1
    1

    DNS Request

    gacan.zapto.org

  • 8.8.8.8:53
    crl.microsoft.com
    dns
    63 B
    162 B
    1
    1

    DNS Request

    crl.microsoft.com

    DNS Response

    2.19.117.18
    2.19.117.22

  • 8.8.8.8:53
    www.microsoft.com
    dns
    63 B
    230 B
    1
    1

    DNS Request

    www.microsoft.com

    DNS Response

    2.17.5.133

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabBBF1.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\TarBC04.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/1736-0-0x00000000011F0000-0x0000000001447000-memory.dmp

    Filesize

    2.3MB

  • memory/1736-51-0x00000000011F0000-0x0000000001447000-memory.dmp

    Filesize

    2.3MB

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