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Overview

overview

9

Static

static

bf055949c7...bc.exe

windows7-x64

9

bf055949c7...bc.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    159s
  • max time network
    178s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 09:12 UTC

Sharing

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General

  • Target

    bf055949c7a2ed392792b2a2b8e46c034d0636564f5fa7dbfda94f235533ecbc.exe

  • Size

    624KB

  • MD5

    4dd55b9bfef37ff24244b77e7be0d5c2

  • SHA1

    56e18311e084ade4dc52761527eb25e8a56ed357

  • SHA256

    bf055949c7a2ed392792b2a2b8e46c034d0636564f5fa7dbfda94f235533ecbc

  • SHA512

    73d12057d7147304dc2bb8a09522463f72f98d63df7e57f81023bc5fe5c7237845c59059d388328414a2bf7e423f289bc62bbcc756fa8cf25557b2836cb46bde

  • SSDEEP

    12288:p93rW92itxpUGx1I/mCEUaQ9b0WF+cf6vDbRI4LBvhRybnlf61Y+Q:3W92kUGx/s9bSvDbRlJ0bn81Y+Q

Score
9/10
evasion

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
    evasion
  • 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
    evasionspywaretrojan
  • 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\bf055949c7a2ed392792b2a2b8e46c034d0636564f5fa7dbfda94f235533ecbc.exe
    "C:\Users\Admin\AppData\Local\Temp\bf055949c7a2ed392792b2a2b8e46c034d0636564f5fa7dbfda94f235533ecbc.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:4940
    • C:\Users\Admin\AppData\Local\Temp\n1763\s1763.exe
      "C:\Users\Admin\AppData\Local\Temp\n1763\s1763.exe" 25041d328a2d25bccf910d80aTHdk+/v9ytxojkhRb/wJB2cMtnWPLGsKDmiNs8aR0V0C1ws54eGRZ1uqmOUsgMgLabnEdWt10dJbswm5u2T/LlYPlo0FnxH7xhftLzcXJ2fZsn5b9R2b5XDam3gu4xA2V50kUabZCvVpu4oKXDI9ZuVTRmnqYS+vttLX5Y= /v "C:\Users\Admin\AppData\Local\Temp\bf055949c7a2ed392792b2a2b8e46c034d0636564f5fa7dbfda94f235533ecbc.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:3052

Network

  • flag-unknown
    DNS
    sf.symcd.com
    s1763.exe
    Remote address:
    8.8.8.8:53
    Request
    sf.symcd.com
    IN A
    Response
    sf.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://sf.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTSqZMG5M8TA9rdzkbCnNwuMAd5VgQUz5mp6nsm9EvJjo%2FX8AUm7%2BPSp50CEA74yzmrFWB6tO9VTrJFr7E%3D
    s1763.exe
    Remote address:
    23.51.123.27:80
    Request
    GET /MFEwTzBNMEswSTAJBgUrDgMCGgUABBTSqZMG5M8TA9rdzkbCnNwuMAd5VgQUz5mp6nsm9EvJjo%2FX8AUm7%2BPSp50CEA74yzmrFWB6tO9VTrJFr7E%3D HTTP/1.1
    Connection: Keep-Alive
    Accept: */*
    User-Agent: Microsoft-CryptoAPI/10.0
    Host: sf.symcd.com
    Response
    HTTP/1.1 200 OK
    Server: nginx
    Content-Type: application/ocsp-response
    Content-Length: 1551
    Cache-Control: public, max-age=86400
    X-XSS-Protection: 1; mode=block
    X-Frame-Options: SAMEORIGIN
    X-Content-Type-Options: nosniff
    Date: Mon, 28 Nov 2022 04:39:02 GMT
    Connection: keep-alive
  • flag-unknown
    DNS
    aia1.wosign.com
    s1763.exe
    Remote address:
    8.8.8.8:53
    Request
    aia1.wosign.com
    IN A
    Response
    aia1.wosign.com
    IN A
    180.163.251.149
  • flag-unknown
    GET
    http://aia1.wosign.com/ca1-tsa.cer
    s1763.exe
    Remote address:
    180.163.251.149:80
    Request
    GET /ca1-tsa.cer HTTP/1.1
    Connection: Keep-Alive
    Accept: */*
    User-Agent: Microsoft-CryptoAPI/10.0
    Host: aia1.wosign.com
    Response
    HTTP/1.1 200 OK
    Server: nginx/1.9.14
    Date: Mon, 28 Nov 2022 04:28:48 GMT
    Content-Type: application/pkix-cert
    Content-Length: 1402
    Last-Modified: Mon, 27 Feb 2017 03:12:14 GMT
    Connection: keep-alive
    ETag: "58b3990e-57a"
    Accept-Ranges: bytes
  • flag-unknown
    DNS
    164.2.77.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    164.2.77.40.in-addr.arpa
    IN PTR
    Response
  • flag-unknown
    DNS
    cdb0.northstar.api.socdn.com
    s1763.exe
    Remote address:
    8.8.8.8:53
    Request
    cdb0.northstar.api.socdn.com
    IN A
    Response
    cdb0.northstar.api.socdn.com
    IN CNAME
    615321.parkingcrew.net
    615321.parkingcrew.net
    IN A
    13.248.148.254
    615321.parkingcrew.net
    IN A
    76.223.26.96
  • flag-unknown
    DNS
    14.110.152.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    14.110.152.52.in-addr.arpa
    IN PTR
    Response
  • flag-unknown
    GET
    http://cdb0.northstar.api.socdn.com/installer/546080c1-1184-4854-a6e2-3aad0a000013/46777173/config
    s1763.exe
    Remote address:
    13.248.148.254:80
    Request
    GET /installer/546080c1-1184-4854-a6e2-3aad0a000013/46777173/config HTTP/1.1
    User-Agent: DownloadMR/3.1.40 (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-c1c2-5be7ba817d60)
    Accept-Language: en-US
    Host: cdb0.northstar.api.socdn.com
    Connection: Keep-Alive
    Response
    HTTP/1.1 200 OK
    Date: Mon, 28 Nov 2022 04:39:49 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
    DNS
    cdb0.northstar.api.socdn.com
    s1763.exe
    Remote address:
    8.8.8.8:53
    Request
    cdb0.northstar.api.socdn.com
    IN A
    Response
    cdb0.northstar.api.socdn.com
    IN CNAME
    615321.parkingcrew.net
    615321.parkingcrew.net
    IN A
    13.248.148.254
    615321.parkingcrew.net
    IN A
    76.223.26.96
  • 204.79.197.239:443
    40 B
     1
  • 23.73.0.144:443
    tls
    92 B
     104 B
     2
    2
  • 93.184.221.240:80
    s1763.exe
    260 B
     5
  • 93.184.220.29:80
    322 B
     7
  • 93.184.221.240:80
    322 B
     7
  • 23.51.123.27:80
    http://sf.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTSqZMG5M8TA9rdzkbCnNwuMAd5VgQUz5mp6nsm9EvJjo%2FX8AUm7%2BPSp50CEA74yzmrFWB6tO9VTrJFr7E%3D
    http
    s1763.exe
    461 B
     2.0kB
     5
    4

    HTTP Request

    GET http://sf.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTSqZMG5M8TA9rdzkbCnNwuMAd5VgQUz5mp6nsm9EvJjo%2FX8AUm7%2BPSp50CEA74yzmrFWB6tO9VTrJFr7E%3D

    HTTP Response

    200
  • 65.9.84.97:80
    46 B
     40 B
     1
    1
  • 65.9.84.97:80
    46 B
     40 B
     1
    1
  • 142.250.186.132:80
    46 B
     40 B
     1
    1
  • 65.9.84.97:80
    46 B
     40 B
     1
    1
  • 142.250.186.132:443
    tls
    46 B
     113 B
     1
    1
  • 142.250.185.161:443
    tls
    46 B
     113 B
     1
    1
  • 180.163.251.149:80
    http://aia1.wosign.com/ca1-tsa.cer
    http
    s1763.exe
    455 B
     3.3kB
     7
    7

    HTTP Request

    GET http://aia1.wosign.com/ca1-tsa.cer

    HTTP Response

    200
  • 8.8.8.8:443
    tls
    46 B
     113 B
     1
    1
  • 65.9.86.81:443
    tls
    92 B
     119 B
     2
    2
  • 8.8.8.8:443
    tls
    46 B
     113 B
     1
    1
  • 13.248.148.254:80
    cdb0.northstar.api.socdn.com
    s1763.exe
    156 B
     3
  • 13.248.148.254:80
    cdb0.northstar.api.socdn.com
    s1763.exe
    156 B
     3
  • 13.248.148.254:80
    http://cdb0.northstar.api.socdn.com/installer/546080c1-1184-4854-a6e2-3aad0a000013/46777173/config
    http
    s1763.exe
    785 B
     3.5kB
     8
    7

    HTTP Request

    GET http://cdb0.northstar.api.socdn.com/installer/546080c1-1184-4854-a6e2-3aad0a000013/46777173/config

    HTTP Response

    200
  • 13.248.148.254:80
    cdb0.northstar.api.socdn.com
    s1763.exe
    156 B
     3
  • 8.8.8.8:53
    sf.symcd.com
    dns
    s1763.exe
    58 B
     160 B
     1
    1

    DNS Request

    sf.symcd.com

    DNS Response

    23.51.123.27

  • 8.8.8.8:53
    aia1.wosign.com
    dns
    s1763.exe
    61 B
     77 B
     1
    1

    DNS Request

    aia1.wosign.com

    DNS Response

    180.163.251.149

  • 8.8.8.8:53
    164.2.77.40.in-addr.arpa
    dns
    70 B
     144 B
     1
    1

    DNS Request

    164.2.77.40.in-addr.arpa

  • 8.8.8.8:53
    cdb0.northstar.api.socdn.com
    dns
    s1763.exe
    74 B
     142 B
     1
    1

    DNS Request

    cdb0.northstar.api.socdn.com

    DNS Response

    13.248.148.254
    76.223.26.96

  • 8.8.8.8:53
    14.110.152.52.in-addr.arpa
    dns
    72 B
     146 B
     1
    1

    DNS Request

    14.110.152.52.in-addr.arpa

  • 8.8.8.8:53
    cdb0.northstar.api.socdn.com
    dns
    s1763.exe
    74 B
     142 B
     1
    1

    DNS Request

    cdb0.northstar.api.socdn.com

    DNS Response

    13.248.148.254
    76.223.26.96

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n1763\s1763.exe
    Filesize

    350KB

    MD5

    54394ba7de5b2c5e3df92557ea95f014

    SHA1

    47a99735e089139495643c9027effcb6b1fc5504

    SHA256

    339f7dd54a1e07bfcabb5749047ef4ab615462213f5baaa62fb690c894bef1eb

    SHA512

    45928ffec4f1bf9a86469bb54f83ba6fdcd275ef9826bd923e890fce83d7a8f975c309bda4849d3f2d066ea458f23fa8e6aefe26be5e874249712462ecd69660

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\n1763\s1763.exe
    Filesize

    350KB

    MD5

    54394ba7de5b2c5e3df92557ea95f014

    SHA1

    47a99735e089139495643c9027effcb6b1fc5504

    SHA256

    339f7dd54a1e07bfcabb5749047ef4ab615462213f5baaa62fb690c894bef1eb

    SHA512

    45928ffec4f1bf9a86469bb54f83ba6fdcd275ef9826bd923e890fce83d7a8f975c309bda4849d3f2d066ea458f23fa8e6aefe26be5e874249712462ecd69660

    Download Submit

  • memory/3052-135-0x00007FFEE6C50000-0x00007FFEE7686000-memory.dmp

    Filesize

    10.2MB

    Download

  • memory/3052-136-0x000000000159A000-0x000000000159F000-memory.dmp

    Filesize

    20KB

    Download

  • memory/3052-137-0x000000000159A000-0x000000000159F000-memory.dmp

    Filesize

    20KB

    Download

  • memory/3052-138-0x000000000159A000-0x000000000159F000-memory.dmp

    Filesize

    20KB

    Download

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