Analysis

  • max time kernel
    1800s
  • max time network
    1588s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    03/09/2024, 16:52

General

  • Target
    Content-Warning-FixOnly.V4/OnlineFix.url
  • Size 46B
  • Sample240903-vdghzsseqc
  • SHA256 3cb526cccccc54af4c006fff00d1f48f830d08cdd4a2f21213856065666ef38e
  • MD5 SHA1 SHA512
Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Drops file in Windows directory 4 IoCs
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\System32\rundll32.exe
    "C:\Windows\System32\rundll32.exe" "C:\Windows\System32\ieframe.dll",OpenURL C:\Users\Admin\AppData\Local\Temp\Content-Warning-FixOnly.V4\OnlineFix.url
    1⤵
    • Checks computer location settings
    PID:4188
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
    1⤵
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:220
  • C:\Windows\system32\browser_broker.exe
    C:\Windows\system32\browser_broker.exe -Embedding
    1⤵
    • Modifies Internet Explorer settings
    PID:4632
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:696
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:4236
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Drops file in Windows directory
    • Modifies registry class
    PID:1576
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    PID:3772

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        57C8EDB95DF3F0AD4EE2DC2B8CFD4157

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
        • Size 4KB
        • SHA256 9cf94355051bf0f4a45724ca20d1cc02f76371b963ab7d1e38bd8997737b13d8
        • MD5 SHA1 SHA512 SSDEEP

        edgecompatviewlist[1].xml

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VSH5XF98\edgecompatviewlist[1].xml
        • Size 74KB
        • SHA256 853d2f4eb81c9fdcea2ee079f6faf98214b111b77cdf68709b38989d123890f1
        • MD5 SHA1 SHA512 SSDEEP

        online-fix[1].xml

        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\#!001\MicrosoftEdge\User\Default\DOMStore\TFLA3JYE\online-fix[1].xml
        • Size 356B
        • SHA256 4ca40de3acaff6d988c620cd63c04362c0828a1cb48e2bd3396dcae0659ae86a
        • MD5 SHA1 SHA512

        online-fix[1].xml

        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\#!001\MicrosoftEdge\User\Default\DOMStore\TFLA3JYE\online-fix[1].xml
        • Size 1KB
        • SHA256 f1b1cb54b414a0b4696c650020f4f6f48d350710349ddeb32c09c20ad9b4f295
        • MD5 SHA1 SHA512

        favicon-16x16[1].png

        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\MicrosoftEdge\Cache\O7NTE3LO\favicon-16x16[1].png
        • Size 1KB
        • SHA256 c1fff90e1a74d5b51203f2a7b60270db5a105741217a3ce1d1a220504e43e96b
        • MD5 SHA1 SHA512

        suggestions[1].en-US

        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\MicrosoftEdge\Cache\YRZ6G88R\suggestions[1].en-US
        • Size 17KB
        • SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
        • MD5 SHA1 SHA512 SSDEEP

        memory/220-0-0x0000018414A20000-0x0000018414A30000-memory.dmp

        memory/220-16-0x0000018414B20000-0x0000018414B30000-memory.dmp

        memory/220-35-0x0000018411DF0000-0x0000018411DF2000-memory.dmp

        memory/220-425-0x000001841B1B0000-0x000001841B1B1000-memory.dmp

        memory/220-426-0x000001841B1E0000-0x000001841B1E1000-memory.dmp

        memory/1576-353-0x0000023003690000-0x0000023003692000-memory.dmp

        memory/1576-218-0x00000230033E0000-0x00000230033E2000-memory.dmp

        memory/1576-201-0x0000023003520000-0x0000023003522000-memory.dmp

        memory/1576-195-0x00000230034E0000-0x00000230034E2000-memory.dmp

        memory/1576-199-0x0000023003510000-0x0000023003512000-memory.dmp

        memory/1576-197-0x0000023003500000-0x0000023003502000-memory.dmp

        memory/1576-191-0x00000230034D0000-0x00000230034D2000-memory.dmp

        memory/1576-205-0x0000023003540000-0x0000023003542000-memory.dmp

        memory/1576-367-0x0000023004580000-0x0000023004582000-memory.dmp

        memory/1576-378-0x00000230019F0000-0x00000230019F2000-memory.dmp

        memory/1576-384-0x0000023004E00000-0x0000023004F00000-memory.dmp

        memory/1576-207-0x00000230032A0000-0x00000230032A2000-memory.dmp

        memory/1576-209-0x00000230032C0000-0x00000230032C2000-memory.dmp

        memory/1576-203-0x0000023003530000-0x0000023003532000-memory.dmp

        memory/1576-211-0x00000230033C0000-0x00000230033C2000-memory.dmp

        memory/1576-487-0x0000023008420000-0x0000023008520000-memory.dmp

        memory/1576-500-0x00000230001C0000-0x00000230001D0000-memory.dmp

        memory/1576-501-0x00000230001C0000-0x00000230001D0000-memory.dmp

        memory/1576-502-0x00000230001C0000-0x00000230001D0000-memory.dmp

        memory/1576-505-0x00000230001C0000-0x00000230001D0000-memory.dmp

        memory/1576-504-0x00000230001C0000-0x00000230001D0000-memory.dmp

        memory/1576-186-0x00000230034B0000-0x00000230034B2000-memory.dmp

        memory/1576-167-0x0000023003270000-0x0000023003272000-memory.dmp

        memory/1576-59-0x000002386FF00000-0x0000023870000000-memory.dmp

        memory/4236-45-0x0000021CE6410000-0x0000021CE6510000-memory.dmp