Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-05-2024 20:23

General

  • Target

    SpySheriff.exe

  • Size

    403KB

  • MD5

    c899f93e8b753fedd068ef3fe2edb0fd

  • SHA1

    144b1f18d0e307d14937c21ca1d7cbfc91828a10

  • SHA256

    5c2a85fb56de2e0a1a1d260ef2177e0209477586c8a6740494bbaf40a9785f47

  • SHA512

    1aceacb4eba0815322dd3fcd273d8703408362eee3b2d2b5981d2abbe4c2b02852608f46b2e7ce46a50e921871d445c239014b5957c6ba0606bd0334ce7bd41b

  • SSDEEP

    12288:eBMDMf+ztV53y2k9I68iXDycz+rYIYsVRSHsDr:eS4S53h68eIZjD

Malware Config

Signatures

  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 23 IoCs

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

  • Enumerates system info in registry 2 TTPs 64 IoCs
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 4 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SpySheriff.exe
    "C:\Users\Admin\AppData\Local\Temp\SpySheriff.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Modifies system executable filetype association
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4428

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

3
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

5
T1012

System Information Discovery

6
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\SpySheriff.lnk
    Filesize

    1KB

    MD5

    e0c391f71563e55b7eeea98b4075b2a1

    SHA1

    2ee3df870d7bac1caca14837b79bdfebe49f2ddf

    SHA256

    e6ca305c77528cc1077c4395b94268e815b487a052fc336436423360874626cc

    SHA512

    c54b56adc6aab79fac1b76ceddcb45a8640a36158805fa641053276747918acaf67d8be0ec90dcd72a899b52bc075933d5e6c8d5abb95e64c5ca642c0205e6d6

  • memory/4428-10-0x0000000021AF0000-0x0000000021B14000-memory.dmp
    Filesize

    144KB

  • memory/4428-9-0x0000000021250000-0x0000000021273000-memory.dmp
    Filesize

    140KB

  • memory/4428-8-0x000000001FC70000-0x000000001FC96000-memory.dmp
    Filesize

    152KB

  • memory/4428-7-0x000000001E980000-0x000000001E9A8000-memory.dmp
    Filesize

    160KB

  • memory/4428-6-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/4428-11-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/4428-21-0x0000000021AF0000-0x0000000021B14000-memory.dmp
    Filesize

    144KB

  • memory/4428-20-0x0000000021250000-0x0000000021273000-memory.dmp
    Filesize

    140KB

  • memory/4428-19-0x000000001FC70000-0x000000001FC96000-memory.dmp
    Filesize

    152KB

  • memory/4428-18-0x000000001E980000-0x000000001E9A8000-memory.dmp
    Filesize

    160KB

  • memory/4428-17-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/4428-22-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/4428-32-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB