aa8fb26870c48f14f2c52535116ce37f243228861f509baa4305887b47428bfd

Analysis

max time kernel
120s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2025, 03:47

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General

Target
TsUsbRedirectionGroupPolicyExtension.dll
Size 13KB
Sample250220-ecckmswlak
SHA256 f44cc1e23d0d192dcfd84069b27704cd0b2a8e7720eee43656f57cb474433762
MD5 d89cda3ff8427da82de6cce39008c5bc
SHA1 33889517517b8953707796d12d6907b039c715d1
SHA512 4a73be7228960719236f39abc6dba7741498d3a3539f7bcc31b6d28a2574e41e4f85e6c2e0fbcffe9ba3b6a646fa3fa078adc0a53c46a4676b871fb92e11fe4f
SSDEEP 192:wWMcTgQEri3hPkpzRK7KVM6cqm+saSLysnlsam4oIWa+W8:wWpTgTu3ypzRo61mVag9Jm4oIWa+W
MD5 SHA1 SHA512 SSDEEP

Score

6^/10

persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\GrpConv = "grpconv -o"	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\inf\TsUsbHubFilter.PNF	rundll32.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	runonce.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	runonce.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4444 wrote to memory of 2032	4444	rundll32.exe	85
PID 4444 wrote to memory of 2032	4444	rundll32.exe	85
PID 2032 wrote to memory of 1820	2032	runonce.exe	86
PID 2032 wrote to memory of 1820	2032	runonce.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\TsUsbRedirectionGroupPolicyExtension.dll,#1
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Windows\system32\runonce.exe
  "C:\Windows\system32\runonce.exe" -r
  2⤵
  - Checks processor information in registry
  - Suspicious use of WriteProcessMemory
  PID:2032
- - C:\Windows\System32\grpconv.exe
    "C:\Windows\System32\grpconv.exe" -o
    3⤵
    PID:1820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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