621a64131ab2ca484f40c065b7ef905f1778359ae50ef566e4c308ecf2fdcd90

Analysis

max time kernel
149s
max time network
150s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20260513-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
submitted
16/07/2026, 04:25

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General

Target
uninstall.exe
Size 56KB
Sample260716-e1646acz4k
SHA256 621a64131ab2ca484f40c065b7ef905f1778359ae50ef566e4c308ecf2fdcd90
MD5 e7907299e76829137cb7b31e48c2f859
SHA1 ff12adcf30bd945447ebc94dd2aabd516eb64495
SHA512 7feb68158e06283c95b2427dcc2d8468085437376ba639a9a814102cab5d2a5fa68249cd7417e427866d75bec7a86dda65f46174fd4c6d11bec0bd418f03900f
SSDEEP 1536:ApgpHzb9dZVX9fHMvG0D3XJogVKKdGGGGGGNLeAyNnu5:WgXdZt9P6D3XJooGGGGGG1eAd5
TLSH
T10A43AE1736C289BBDAA606300DF7E7BEE7B6DEE4C9055A6357806F2F7CA1142CD00145
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery installer

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4468	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
4468	Au_.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	Au_.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uninstall.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral7/files/0x00080000000285e4-0.dat	nsis_installer_1
behavioral7/files/0x00080000000285e4-0.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 4468	4520	uninstall.exe	82

C:\Users\Admin\AppData\Local\Temp\uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\uninstall.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4468

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Au_.exe

Path C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
Size 56KB
SHA256 621a64131ab2ca484f40c065b7ef905f1778359ae50ef566e4c308ecf2fdcd90
MD5 e7907299e76829137cb7b31e48c2f859
SHA1 ff12adcf30bd945447ebc94dd2aabd516eb64495
SHA512 7feb68158e06283c95b2427dcc2d8468085437376ba639a9a814102cab5d2a5fa68249cd7417e427866d75bec7a86dda65f46174fd4c6d11bec0bd418f03900f
SSDEEP 1536:ApgpHzb9dZVX9fHMvG0D3XJogVKKdGGGGGGNLeAyNnu5:WgXdZt9P6D3XJooGGGGGG1eAd5
TLSH
T10A43AE1736C289BBDAA606300DF7E7BEE7B6DEE4C9055A6357806F2F7CA1142CD00145
MD5 SHA1 SHA512 SSDEEP TLSH

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