a3f38a4e17fc5f102b9e3c46d0a4d3d4bab602a3adecc73e5860112c96c7333d

Analysis

max time kernel
92s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2024 05:03

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General

Target

a3f38a4e17fc5f102b9e3c46d0a4d3d4bab602a3adecc73e5860112c96c7333dN.dll
Size

76KB
MD5

ad88c83c1e96603d64b3727535d95cd0
SHA1

fe5b894fd3095727e87ecf65ec53a5bee5cb0b4b
SHA256

a3f38a4e17fc5f102b9e3c46d0a4d3d4bab602a3adecc73e5860112c96c7333d
SHA512

50b2659f9d88f45928e63ced26ba3ee06b26110cc89903391ed4d37bd20166b0083757275674f701ae49284406214d9066ee30b755bfffd71d6d963c43fab092
SSDEEP

1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7Zd7kfU:c8y93KQjy7G55riF1cMo03f

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/4840-0-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4840-1-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3020	4840	WerFault.exe	83

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	4840	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5020 wrote to memory of 4840	5020	rundll32.exe	83
PID 5020 wrote to memory of 4840	5020	rundll32.exe	83
PID 5020 wrote to memory of 4840	5020	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a3f38a4e17fc5f102b9e3c46d0a4d3d4bab602a3adecc73e5860112c96c7333dN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5020
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a3f38a4e17fc5f102b9e3c46d0a4d3d4bab602a3adecc73e5860112c96c7333dN.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4840
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4840 -s 700
    3⤵
    - Program crash
    PID:3020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4840 -ip 4840
1⤵
PID:4836

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/4840-0-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/4840-1-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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