Analysis

  • max time kernel
    63s
  • max time network
    67s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-05-2024 20:20

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.

  • 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 61 IoCs
  • Suspicious use of SendNotifyMessage 61 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 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:4856

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

5
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\SpySheriff.lnk
    Filesize

    1KB

    MD5

    cd1199d77238d2da6d3ace69ac49540e

    SHA1

    f6ef362acfec7e41d5f379b661f920eaf898c600

    SHA256

    bf3f1c884d5ea1d8b4f1ba764e9033ca8a2e7c9e15b595f8cf44b8a174cac4b1

    SHA512

    502cd2117789bc45796d4a87716c4718a5862dba994f8e9317ac22360a98fadb104c467d96c9974df304cbf65d27f52c011d57e9b80ddc721141c2c2dc619c40

  • memory/4856-8-0x000000001FB30000-0x000000001FB56000-memory.dmp
    Filesize

    152KB

  • memory/4856-7-0x000000001E840000-0x000000001E868000-memory.dmp
    Filesize

    160KB

  • memory/4856-9-0x0000000021010000-0x0000000021033000-memory.dmp
    Filesize

    140KB

  • memory/4856-10-0x0000000021AE0000-0x0000000021B04000-memory.dmp
    Filesize

    144KB

  • memory/4856-6-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/4856-12-0x000000001E840000-0x000000001E868000-memory.dmp
    Filesize

    160KB

  • memory/4856-11-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/4856-22-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/4856-26-0x0000000021AE0000-0x0000000021B04000-memory.dmp
    Filesize

    144KB

  • memory/4856-25-0x0000000021010000-0x0000000021033000-memory.dmp
    Filesize

    140KB

  • memory/4856-24-0x000000001FB30000-0x000000001FB56000-memory.dmp
    Filesize

    152KB

  • memory/4856-23-0x000000001E840000-0x000000001E868000-memory.dmp
    Filesize

    160KB

  • memory/4856-32-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB