f4efb31c7607271abcac1a9b3cf4f9d5938f1503423c49fd4c5732af5a35e148

Analysis

max time kernel
140s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
07-02-2025 06:56

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General

Target

f4efb31c7607271abcac1a9b3cf4f9d5938f1503423c49fd4c5732af5a35e148.dll
Size

76KB
MD5

37cb6a89fac9103acbf9e0bde1e9b7a2
SHA1

37f5a3eb5bde1e69ec787bbf925cd3e179e8e60f
SHA256

f4efb31c7607271abcac1a9b3cf4f9d5938f1503423c49fd4c5732af5a35e148
SHA512

384e515ae91f5cda0cd6a1fa35ba3e9b19f314c843960bdd5c60d0bd9d0eb4b3352752ba47901d26e5983f289539753300719e06d0ab4eca6837558cf0a393b0
SSDEEP

1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7ZNdk8:c8y93KQjy7G55riF1cMo03Jk8

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/4620-0-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4620-1-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3576	4620	WerFault.exe	84

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	4620	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 4620	2180	rundll32.exe	84
PID 2180 wrote to memory of 4620	2180	rundll32.exe	84
PID 2180 wrote to memory of 4620	2180	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f4efb31c7607271abcac1a9b3cf4f9d5938f1503423c49fd4c5732af5a35e148.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f4efb31c7607271abcac1a9b3cf4f9d5938f1503423c49fd4c5732af5a35e148.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4620
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4620 -s 716
    3⤵
    - Program crash
    PID:3576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4620 -ip 4620
1⤵
PID:4836

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/4620-0-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/4620-1-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download