Analysis

  • max time kernel
    149s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-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

  • Modifies RDP port number used by Windows 1 TTPs
  • 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
  • Maps connected drives based on registry 3 TTPs 5 IoCs

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

  • 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 AdjustPrivilegeToken 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
    • Maps connected drives based on registry
    • 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:1952
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x55c
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1468

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

6
T1012

System Information Discovery

7
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Remote Services

1
T1021

Remote Desktop Protocol

1
T1021.001

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

    a89c9ded5d45d47ee1f844d3d20865f6

    SHA1

    9f2a22f26a6739b5565e1e696a6fd488da958aca

    SHA256

    d47c77d13586f2336c9b83fec7bb55f58a86e91bdf9c9a41f48b7dcdbde2bb44

    SHA512

    754b3f6131d6c78d92272bea1a4bd7457a80b92ecd28f15b4611826640b638fbd75911c8fb43306b1dc97798ae89ece0250187595699a465c29db25b8ed4868b

  • memory/1952-9-0x00000000217A0000-0x00000000217C4000-memory.dmp
    Filesize

    144KB

  • memory/1952-8-0x0000000020E20000-0x0000000020E43000-memory.dmp
    Filesize

    140KB

  • memory/1952-7-0x000000001F820000-0x000000001F846000-memory.dmp
    Filesize

    152KB

  • memory/1952-6-0x000000001E540000-0x000000001E568000-memory.dmp
    Filesize

    160KB

  • memory/1952-5-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/1952-10-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/1952-14-0x00000000217A0000-0x00000000217C4000-memory.dmp
    Filesize

    144KB

  • memory/1952-13-0x0000000020E20000-0x0000000020E43000-memory.dmp
    Filesize

    140KB

  • memory/1952-12-0x000000001F820000-0x000000001F846000-memory.dmp
    Filesize

    152KB

  • memory/1952-11-0x000000001E540000-0x000000001E568000-memory.dmp
    Filesize

    160KB

  • memory/1952-21-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/1952-51-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/1952-61-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB

  • memory/1952-66-0x0000000000400000-0x0000000001400000-memory.dmp
    Filesize

    16.0MB