c91c1796338a265b49039c0b2c7a312d764b99e5174fb2dae455ca54f8f41ec7

Analysis

max time kernel
149s
max time network
94s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
16/04/2026, 06:22

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General

Target
$PLUGINSDIR/InstallOptions.dll
Size 15KB
Sample260416-g438sabz21
SHA256 c91c1796338a265b49039c0b2c7a312d764b99e5174fb2dae455ca54f8f41ec7
MD5 033ee34c40e8fa85bf2739bcb2f3e186
SHA1 2ca942f35f77f37df3fc6097acac34f2e77341b7
SHA512 2204e0b8721b8d85c51bd068b1695b16ee096bfc1d1cd5843f48fd04032aeee2b6a91ce82978a4b3414f3d966ec5b36fb337a4149dae3a1d0445935d964d247f
SSDEEP 384:ErC43tPegZ3eBaRwCPOYY7nNYXCT/Yosa:EmTgZ3eBTCmrnNAh
TLSH
T1B1624D1137D558B3E2D62A797EE3B7138FA5F722A4438E0BC7332E06281A5956E7C311
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4916	1004	WerFault.exe	79

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 4340 wrote to memory of 1004	4340	rundll32.exe	79

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\InstallOptions.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4340
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\InstallOptions.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1004
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1004 -s 544
    3⤵
    - Program crash
    PID:4916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1004 -ip 1004
1⤵
PID:3320

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

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Downloads

memory/1004-0-0x00000000006D0000-0x00000000007AF000-memory.dmp

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