99c379fc90591cb145dc12021dae637a897658c1ca9c64a0e9f0e265f816b17c

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 01:08

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General

Target

99c379fc90591cb145dc12021dae637a897658c1ca9c64a0e9f0e265f816b17c.dll
Size

76KB
MD5

07404b8798df92608f68fb55062821da
SHA1

2d3763bfb97afcffde85b55dbd47e76f69f33dd4
SHA256

99c379fc90591cb145dc12021dae637a897658c1ca9c64a0e9f0e265f816b17c
SHA512

36a11f973cc52e651117ac684bdef9b76660e843bc06ac0fa631607691f008d8dc05ca45127fb3675ef6b21056cb57a619a503b1e33287ac0a9342f7b0b1b43a
SSDEEP

1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7Zk3eEj:c8y93KQjy7G55riF1cMo03oj

Score

8^/10

discovery persistence privilege_escalation upx

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2640-0-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2640-1-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3600	2640	WerFault.exe	82

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	2640	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4596 wrote to memory of 2640	4596	rundll32.exe	82
PID 4596 wrote to memory of 2640	4596	rundll32.exe	82
PID 4596 wrote to memory of 2640	4596	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\99c379fc90591cb145dc12021dae637a897658c1ca9c64a0e9f0e265f816b17c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4596
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\99c379fc90591cb145dc12021dae637a897658c1ca9c64a0e9f0e265f816b17c.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2640
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2640 -s 704
    3⤵
    - Program crash
    PID:3600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2640 -ip 2640
1⤵
PID:4188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

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/2640-0-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/2640-1-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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