99c61abf41c3aec38cab3ed6270adbca9a247bbf5f9aa9d29ecb0659a5527f48

Analysis

max time kernel
149s
max time network
93s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
11/05/2026, 00:05

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General

Target
$SYSDIR/pthreadVC.dll
Size 52KB
Sample260511-adn8lsbx9n
SHA256 99c61abf41c3aec38cab3ed6270adbca9a247bbf5f9aa9d29ecb0659a5527f48
MD5 f04a90f917ba10ae2dcbe859870f4dea
SHA1 6668ebe373ce58c33017697c477557653427e626
SHA512 aec29301b9ce311b27f1590b0e0c4121acdc183a30b570e087d77b7035684f02a6dfbdee950c37f3023b32e2ea5a075a5fbe6d18a2804da9490d4959733bb516
SSDEEP 384:hSvfC8Vv0Vy7ojuq7GQcdWTc4zU+GFronD/yD5rBEe0kiH32Jp9AhOW:wt+TGQcdWYdMG59EeJiH3YzW
TLSH
T19A33C8066E28C1FBC5B768F126AA23FB1D370614131568DFE397D460096ADE5E339783
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 5196 wrote to memory of 3464	5196	rundll32.exe	79

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$SYSDIR\pthreadVC.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5196
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$SYSDIR\pthreadVC.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3464

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3464-0-0x0000000000F50000-0x0000000000FCB000-memory.dmp

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