4c23f637f3eb1ec1eb014ef6936dcfc2ba1cf258644a2cf527b2939ef012e983

Analysis

max time kernel
91s
max time network
92s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
02-02-2025 09:34

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General

Target

4c23f637f3eb1ec1eb014ef6936dcfc2ba1cf258644a2cf527b2939ef012e983N.dll
Size

76KB
MD5

3466d47e56ee86abbf628fc49a7b9920
SHA1

a4600e88efce90d2208ea7e02052dcc2af298aa1
SHA256

4c23f637f3eb1ec1eb014ef6936dcfc2ba1cf258644a2cf527b2939ef012e983
SHA512

accc66405dc906dd3fe9cf10c1f725411f142622eae23a79b6294668fac8e130797d0f64cebd863dd2c3a5c55f1105f0680edc97d04c3cf24212613679929ebc
SSDEEP

1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7ZX2ybxlZth1p9cxB5cJE8poCk:c8y93KQjy7G55riF1cMo03/per

Score

5^/10

discovery upx

Malware Config

Signatures

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4056-0-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4056-1-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3492	4056	WerFault.exe	85

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 AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4056	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 4056	4536	rundll32.exe	85
PID 4536 wrote to memory of 4056	4536	rundll32.exe	85
PID 4536 wrote to memory of 4056	4536	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c23f637f3eb1ec1eb014ef6936dcfc2ba1cf258644a2cf527b2939ef012e983N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c23f637f3eb1ec1eb014ef6936dcfc2ba1cf258644a2cf527b2939ef012e983N.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4056
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4056 -s 700
    3⤵
    - Program crash
    PID:3492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4056 -ip 4056
1⤵
PID:3248

Network

MITRE ATT&CK Enterprise v15

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/4056-0-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/4056-1-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download