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Analysis

  • max time kernel
    99s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/11/2022, 07:06 UTC

General

  • Target

    c03187150a836debc73ec755140c92f416467fb109aecd32440fc4f313fe58a4.exe

  • Size

    512KB

  • MD5

    10af17ab4c758e10c214f7461ebcdc96

  • SHA1

    50b428bf72fc7263a2f723ac7bf405b65831fdc3

  • SHA256

    c03187150a836debc73ec755140c92f416467fb109aecd32440fc4f313fe58a4

  • SHA512

    f89d90378cc1aff53d06e8cd87eb7b225dacdd7304d9c161eac0d5f717ab7a4d42f23908dc9ebcb2e4672f4dba6f66681471418c6489bac2dc041fa45e59d68b

  • SSDEEP

    12288:0+h9St2Ma70zIIc91Dwws4zruXic2O/3E4v:0+h9OY70z+warul3E4v

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c03187150a836debc73ec755140c92f416467fb109aecd32440fc4f313fe58a4.exe
    "C:\Users\Admin\AppData\Local\Temp\c03187150a836debc73ec755140c92f416467fb109aecd32440fc4f313fe58a4.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks computer location settings
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4944
    • C:\Users\Admin\AppData\Local\Temp\n7187\s7187.exe
      "C:\Users\Admin\AppData\Local\Temp\n7187\s7187.exe" e7717f21c25652955caeda7cGABrcV5SBF0Xmx26o+NMuvi+fPT0Vkb224X4dKEgog6rXhaeMAEyn+9pXSSRZW1P7Epwykivzjsvd14T3eQXA67AQUuYOetJnxLXHW2e6j4YEwFrGidJBVT+WBBx3zOHW+Na38ItESjtXGasuNERmJnP /v "C:\Users\Admin\AppData\Local\Temp\c03187150a836debc73ec755140c92f416467fb109aecd32440fc4f313fe58a4.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1908

Network

  • flag-unknown
    DNS
    ocsp.thawte.com
    s7187.exe
    Remote address:
    8.8.8.8:53
    Request
    ocsp.thawte.com
    IN A
    Response
    ocsp.thawte.com
    IN CNAME
    ocsp-ds.ws.symantec.com.edgekey.net
    ocsp-ds.ws.symantec.com.edgekey.net
    IN CNAME
    e8218.dscb1.akamaiedge.net
    e8218.dscb1.akamaiedge.net
    IN A
    23.51.123.27
  • flag-unknown
    GET
    http://ocsp.thawte.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQwF4prw9S7mCbCEHD%2Fyl6nWPkczAQUe1tFz6%2FOy3r9MZIaarbzRutXSFACEEeXTXhzpbyrDS%2BzcBkvzl4%3D
    s7187.exe
    Remote address:
    23.51.123.27:80
    Request
    GET /MFEwTzBNMEswSTAJBgUrDgMCGgUABBQwF4prw9S7mCbCEHD%2Fyl6nWPkczAQUe1tFz6%2FOy3r9MZIaarbzRutXSFACEEeXTXhzpbyrDS%2BzcBkvzl4%3D HTTP/1.1
    Connection: Keep-Alive
    Accept: */*
    User-Agent: Microsoft-CryptoAPI/10.0
    Host: ocsp.thawte.com
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Content-Type: application/ocsp-response
    Content-Length: 5
    Cache-Control: public, max-age=300
    X-XSS-Protection: 1; mode=block
    X-Frame-Options: SAMEORIGIN
    X-Content-Type-Options: nosniff
    Date: Tue, 29 Nov 2022 11:46:20 GMT
    Connection: keep-alive
  • flag-unknown
    GET
    http://ocsp.thawte.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQwF4prw9S7mCbCEHD%2Fyl6nWPkczAQUe1tFz6%2FOy3r9MZIaarbzRutXSFACEEeXTXhzpbyrDS%2BzcBkvzl4%3D
    s7187.exe
    Remote address:
    23.51.123.27:80
    Request
    GET /MFEwTzBNMEswSTAJBgUrDgMCGgUABBQwF4prw9S7mCbCEHD%2Fyl6nWPkczAQUe1tFz6%2FOy3r9MZIaarbzRutXSFACEEeXTXhzpbyrDS%2BzcBkvzl4%3D HTTP/1.1
    Cache-Control: no-cache
    Connection: Keep-Alive
    Pragma: no-cache
    Accept: */*
    User-Agent: Microsoft-CryptoAPI/10.0
    Host: ocsp.thawte.com
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Content-Type: application/ocsp-response
    Content-Length: 5
    Cache-Control: public, max-age=300
    X-XSS-Protection: 1; mode=block
    X-Frame-Options: SAMEORIGIN
    X-Content-Type-Options: nosniff
    Date: Tue, 29 Nov 2022 11:46:20 GMT
    Connection: keep-alive
  • flag-unknown
    DNS
    crl.thawte.com
    s7187.exe
    Remote address:
    8.8.8.8:53
    Request
    crl.thawte.com
    IN A
    Response
    crl.thawte.com
    IN CNAME
    crl-symcprod.digicert.com
    crl-symcprod.digicert.com
    IN CNAME
    cs9.wac.phicdn.net
    cs9.wac.phicdn.net
    IN A
    72.21.91.29
  • flag-unknown
    GET
    http://crl.thawte.com/ThawtePCA.crl
    s7187.exe
    Remote address:
    72.21.91.29:80
    Request
    GET /ThawtePCA.crl HTTP/1.1
    Connection: Keep-Alive
    Accept: */*
    User-Agent: Microsoft-CryptoAPI/10.0
    Host: crl.thawte.com
    Response
    HTTP/1.1 200 OK
    Accept-Ranges: bytes
    Age: 3547
    Cache-Control: public, max-age=3600
    Content-Type: application/pkix-crl
    Date: Tue, 29 Nov 2022 11:46:20 GMT
    Last-Modified: Tue, 29 Nov 2022 10:47:13 GMT
    Server: ECS (bsa/EB1C)
    X-Cache: HIT
    X-Content-Type-Options: nosniff
    X-Frame-Options: SAMEORIGIN
    X-XSS-Protection: 1; mode=block
    Content-Length: 604
  • flag-unknown
    DNS
    th.symcd.com
    s7187.exe
    Remote address:
    8.8.8.8:53
    Request
    th.symcd.com
    IN A
    Response
    th.symcd.com
    IN CNAME
    ocsp-ds.ws.symantec.com.edgekey.net
    ocsp-ds.ws.symantec.com.edgekey.net
    IN CNAME
    e8218.dscb1.akamaiedge.net
    e8218.dscb1.akamaiedge.net
    IN A
    23.51.123.27
  • flag-unknown
    GET
    http://th.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBRsif7263KedmR2MLuYKv9%2BWQCtWAQU1A1lP3q9NMb%2BR%2BdMDcC98t4Vq3ECEH1FCfATdbNJ8t5mvxWkjNc%3D
    s7187.exe
    Remote address:
    23.51.123.27:80
    Request
    GET /MFEwTzBNMEswSTAJBgUrDgMCGgUABBRsif7263KedmR2MLuYKv9%2BWQCtWAQU1A1lP3q9NMb%2BR%2BdMDcC98t4Vq3ECEH1FCfATdbNJ8t5mvxWkjNc%3D HTTP/1.1
    Connection: Keep-Alive
    Accept: */*
    User-Agent: Microsoft-CryptoAPI/10.0
    Host: th.symcd.com
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Content-Type: application/ocsp-response
    Content-Length: 1441
    Cache-Control: public, max-age=86400
    X-XSS-Protection: 1; mode=block
    X-Frame-Options: SAMEORIGIN
    X-Content-Type-Options: nosniff
    Date: Tue, 29 Nov 2022 11:46:20 GMT
    Connection: keep-alive
  • flag-unknown
    DNS
    c8400.northstar.api.socdn.com
    s7187.exe
    Remote address:
    8.8.8.8:53
    Request
    c8400.northstar.api.socdn.com
    IN A
    Response
    c8400.northstar.api.socdn.com
    IN CNAME
    615321.parkingcrew.net
    615321.parkingcrew.net
    IN A
    76.223.26.96
    615321.parkingcrew.net
    IN A
    13.248.148.254
  • flag-unknown
    GET
    http://c8400.northstar.api.socdn.com/installer/5475a1dd-a818-4ddb-ae0b-49f50a000013/26944537/config
    s7187.exe
    Remote address:
    76.223.26.96:80
    Request
    GET /installer/5475a1dd-a818-4ddb-ae0b-49f50a000013/26944537/config HTTP/1.1
    User-Agent: DownloadMR/3.1.37 (MSIE 9.11;Windows NT 6.3.9600.0;WOW64;.NET CLR 2.0.50727 SP2; .NET CLR 3.0 SP2; .NET CLR 3.5 SP1; .NET CLR 4; .NET CLR 4.0;m=B460MAORUSPRO;u=Admin;northstar;ecc5fae7-ff07-1715-c1c2-a6e38e8d3288)
    Accept-Language: en-US
    Host: c8400.northstar.api.socdn.com
    Connection: Keep-Alive
    Response
    HTTP/1.1 200 OK
    Date: Tue, 29 Nov 2022 11:46:57 GMT
    Content-Type: text/html; charset=UTF-8
    Transfer-Encoding: chunked
    Connection: keep-alive
    Server: nginx
    Vary: Accept-Encoding
    Vary: Accept-Encoding
    X-Redirect: zeropark_yahoo
    X-Template: tpl_CleanPeppermintBlack_twoclick
    X-Language: english
    Accept-CH: viewport-width
    Accept-CH: dpr
    Accept-CH: device-memory
    Accept-CH: rtt
    Accept-CH: downlink
    Accept-CH: ect
    Accept-CH: ua
    Accept-CH: ua-full-version
    Accept-CH: ua-platform
    Accept-CH: ua-platform-version
    Accept-CH: ua-arch
    Accept-CH: ua-model
    Accept-CH: ua-mobile
    Accept-CH-Lifetime: 30
  • flag-unknown
    POST
    http://c8400.northstar.api.socdn.com/installer/5475a1dd-a818-4ddb-ae0b-49f50a000013/26944537/event
    s7187.exe
    Remote address:
    76.223.26.96:80
    Request
    POST /installer/5475a1dd-a818-4ddb-ae0b-49f50a000013/26944537/event HTTP/1.1
    User-Agent: DownloadMR/3.1.37 (MSIE 9.11;Windows NT 6.3.9600.0;WOW64;.NET CLR 2.0.50727 SP2; .NET CLR 3.0 SP2; .NET CLR 3.5 SP1; .NET CLR 4; .NET CLR 4.0;m=B460MAORUSPRO;u=Admin;northstar;ecc5fae7-ff07-1715-c1c2-a6e38e8d3288)
    Accept-Language: en-US
    Content-Type: application/x-www-form-urlencoded
    Host: c8400.northstar.api.socdn.com
    Content-Length: 12594
    Expect: 100-continue
    Response
    HTTP/1.1 403 Forbidden
    Date: Tue, 29 Nov 2022 11:47:00 GMT
    Content-Type: text/html
    Content-Length: 548
    Connection: keep-alive
    Server: nginx
    Vary: Accept-Encoding
  • 104.80.225.205:443
    322 B
    7
  • 52.182.143.211:443
    322 B
    7
  • 23.51.123.27:80
    http://ocsp.thawte.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQwF4prw9S7mCbCEHD%2Fyl6nWPkczAQUe1tFz6%2FOy3r9MZIaarbzRutXSFACEEeXTXhzpbyrDS%2BzcBkvzl4%3D
    http
    s7187.exe
    785 B
    794 B
    6
    5

    HTTP Request

    GET http://ocsp.thawte.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQwF4prw9S7mCbCEHD%2Fyl6nWPkczAQUe1tFz6%2FOy3r9MZIaarbzRutXSFACEEeXTXhzpbyrDS%2BzcBkvzl4%3D

    HTTP Response

    200

    HTTP Request

    GET http://ocsp.thawte.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQwF4prw9S7mCbCEHD%2Fyl6nWPkczAQUe1tFz6%2FOy3r9MZIaarbzRutXSFACEEeXTXhzpbyrDS%2BzcBkvzl4%3D

    HTTP Response

    200
  • 72.21.91.29:80
    http://crl.thawte.com/ThawtePCA.crl
    http
    s7187.exe
    358 B
    1.1kB
    5
    3

    HTTP Request

    GET http://crl.thawte.com/ThawtePCA.crl

    HTTP Response

    200
  • 23.51.123.27:80
    http://th.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBRsif7263KedmR2MLuYKv9%2BWQCtWAQU1A1lP3q9NMb%2BR%2BdMDcC98t4Vq3ECEH1FCfATdbNJ8t5mvxWkjNc%3D
    http
    s7187.exe
    463 B
    1.9kB
    5
    4

    HTTP Request

    GET http://th.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBRsif7263KedmR2MLuYKv9%2BWQCtWAQU1A1lP3q9NMb%2BR%2BdMDcC98t4Vq3ECEH1FCfATdbNJ8t5mvxWkjNc%3D

    HTTP Response

    200
  • 76.223.26.96:80
    http://c8400.northstar.api.socdn.com/installer/5475a1dd-a818-4ddb-ae0b-49f50a000013/26944537/event
    http
    s7187.exe
    14.3kB
    11.0kB
    20
    24

    HTTP Request

    GET http://c8400.northstar.api.socdn.com/installer/5475a1dd-a818-4ddb-ae0b-49f50a000013/26944537/config

    HTTP Response

    200

    HTTP Request

    POST http://c8400.northstar.api.socdn.com/installer/5475a1dd-a818-4ddb-ae0b-49f50a000013/26944537/event

    HTTP Response

    403
  • 8.8.8.8:53
    ocsp.thawte.com
    dns
    s7187.exe
    61 B
    163 B
    1
    1

    DNS Request

    ocsp.thawte.com

    DNS Response

    23.51.123.27

  • 8.8.8.8:53
    crl.thawte.com
    dns
    s7187.exe
    60 B
    144 B
    1
    1

    DNS Request

    crl.thawte.com

    DNS Response

    72.21.91.29

  • 8.8.8.8:53
    th.symcd.com
    dns
    s7187.exe
    58 B
    160 B
    1
    1

    DNS Request

    th.symcd.com

    DNS Response

    23.51.123.27

  • 8.8.8.8:53
    c8400.northstar.api.socdn.com
    dns
    s7187.exe
    75 B
    143 B
    1
    1

    DNS Request

    c8400.northstar.api.socdn.com

    DNS Response

    76.223.26.96
    13.248.148.254

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n7187\s7187.exe

    Filesize

    230KB

    MD5

    abaf13cb23de482dc944ab5b51ca3aac

    SHA1

    76837356db96dd56b647aba60f1adbbdc7b200fe

    SHA256

    b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

    SHA512

    cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

  • C:\Users\Admin\AppData\Local\Temp\n7187\s7187.exe

    Filesize

    230KB

    MD5

    abaf13cb23de482dc944ab5b51ca3aac

    SHA1

    76837356db96dd56b647aba60f1adbbdc7b200fe

    SHA256

    b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

    SHA512

    cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

  • memory/1908-135-0x00007FF8EADD0000-0x00007FF8EB806000-memory.dmp

    Filesize

    10.2MB

  • memory/1908-136-0x0000000000FEA000-0x0000000000FEF000-memory.dmp

    Filesize

    20KB

  • memory/1908-137-0x0000000000FEA000-0x0000000000FEF000-memory.dmp

    Filesize

    20KB

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