Analysis

  • max time kernel
    71s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-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.

  • 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 21 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 5 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:1340

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:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\SpySheriff\SpySheriff.lnk
    Filesize

    1KB

    MD5

    0760609329cdfb48eda99f6106369cd1

    SHA1

    74833897b9778b3c37d8c08e67dd480d2471fcf4

    SHA256

    54a573671667e1d68fd92b529b128dd05a08b53d7d8e4dd417c93fbe84068003

    SHA512

    b1f8ca194f903b5d53f540d7639becc4ecb9855578e00a88f8c76be493601797f30e7580bc2e06cd7bda106a014d32aaa47f9dae6338326b3597b7271e654cc4

  • memory/1340-9-0x00000000218A0000-0x00000000218C4000-memory.dmp
    Filesize

    144KB

  • memory/1340-8-0x0000000020E00000-0x0000000020E23000-memory.dmp
    Filesize

    140KB

  • memory/1340-7-0x000000001FA40000-0x000000001FA66000-memory.dmp
    Filesize

    152KB

  • memory/1340-6-0x000000001E640000-0x000000001E668000-memory.dmp
    Filesize

    160KB

  • memory/1340-5-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/1340-10-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/1340-20-0x00000000218A0000-0x00000000218C4000-memory.dmp
    Filesize

    144KB

  • memory/1340-19-0x0000000020E00000-0x0000000020E23000-memory.dmp
    Filesize

    140KB

  • memory/1340-18-0x000000001FA40000-0x000000001FA66000-memory.dmp
    Filesize

    152KB

  • memory/1340-17-0x000000001E640000-0x000000001E668000-memory.dmp
    Filesize

    160KB

  • memory/1340-15-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/1340-26-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB