e586459138cc3e0d446fb9dc82eedecc31d12955205dafda75fa70932e3aec57

Analysis

max time kernel
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
16/10/2026, 04:26

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General

Target
underdrains.dll
Size 11KB
Sample261016-e2wptag17t
SHA256 e586459138cc3e0d446fb9dc82eedecc31d12955205dafda75fa70932e3aec57
MD5 bf9d50c36761e349775603819eb874cf
SHA1 c62da19f33e518be5bc20cd650cfc4c73eb76114
SHA512 3ee543f801c1b69096f541cbc1445910afbd7d375e14c1b78d51937378cc9ade7f75643a0eaf3c1e7aee44c8876892339ad1d96a8fd6537a30b72f0eaadf64da
SSDEEP 192:Vfvem/YmbO/oiUAnqt8ilNGe3u5I7WvY9JTLtumyEC:VneEbqYbNR3MRvYPomg
TLSH
T112320A427F4141F1FBFA02B8EC77325A4617ACAC67D6C5119A934B4DBE6211231EC63E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4736	3248	WerFault.exe	88

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 1260 wrote to memory of 3248	1260	rundll32.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\underdrains.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1260
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\underdrains.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3248
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3248 -s 460
    3⤵
    - Program crash
    PID:4736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3248 -ip 3248
1⤵
PID:3228

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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