81bdc28465516fae1beca30228b988c630902774fc4d6a64bd9d2e016cd94b6a

Analysis

max time kernel
92s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 21:24

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General

Target

81bdc28465516fae1beca30228b988c630902774fc4d6a64bd9d2e016cd94b6aN.dll
Size

76KB
MD5

4be4bffd3a690bce966888993aa4b2c0
SHA1

399b2ba0452f9be50a3a9e2fb71038fe86710301
SHA256

81bdc28465516fae1beca30228b988c630902774fc4d6a64bd9d2e016cd94b6a
SHA512

2c4d98ec319af8f8368183d8aabbdcdb8a2afa194652b81be268a55fab3d383f13088eee22dde4d066a31d2a49c2a24f9b4dfc3f1fd7a3eee007731fddf7e863
SSDEEP

1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7Z/BXzwerWp:c8y93KQjy7G55riF1cMo03TUBp

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/2356-0-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2356-1-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4552	2356	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	2356	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 2356	1972	rundll32.exe	84
PID 1972 wrote to memory of 2356	1972	rundll32.exe	84
PID 1972 wrote to memory of 2356	1972	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\81bdc28465516fae1beca30228b988c630902774fc4d6a64bd9d2e016cd94b6aN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\81bdc28465516fae1beca30228b988c630902774fc4d6a64bd9d2e016cd94b6aN.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2356
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2356 -s 700
    3⤵
    - Program crash
    PID:4552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2356 -ip 2356
1⤵
PID:448

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/2356-0-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/2356-1-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download