401ac3e612cdfbdbd08d8892e520b3d272d8dcf9ffda81d4413c3234329f15ab

Analysis

max time kernel
138s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/01/2024, 02:10

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General

Target

3b9ef19463e18d96f9d65136b3a0a043.dll
Size

32KB
MD5

3b9ef19463e18d96f9d65136b3a0a043
SHA1

24003bce8a175dd895875f7bfda28486e8e946e0
SHA256

401ac3e612cdfbdbd08d8892e520b3d272d8dcf9ffda81d4413c3234329f15ab
SHA512

54f2aa44c01c1c81d30476c8d86790ddaf342ae2516d90d02c6140119c7fdc3c8f8d3a59ab88430d5b4c6b19f8822f7cfff00f6f53d789f1a3d4cea253baa6a5
SSDEEP

768:QXc/MaoE4Ec5maAVodZ2ubPg7QEuvTq7W0N:WcH4p4aAuP2oEu7qS0

Score

7^/10

persistence 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/4072-0-0x0000000010000000-0x0000000010016000-memory.dmp	upx
behavioral2/memory/4072-1-0x0000000010000000-0x0000000010016000-memory.dmp	upx

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SFCDisable = "4294967197"	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2968	4072	WerFault.exe	17

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5040 wrote to memory of 4072	5040	rundll32.exe	17
PID 5040 wrote to memory of 4072	5040	rundll32.exe	17
PID 5040 wrote to memory of 4072	5040	rundll32.exe	17

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b9ef19463e18d96f9d65136b3a0a043.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b9ef19463e18d96f9d65136b3a0a043.dll,#1
  2⤵
  - Modifies WinLogon
  PID:4072
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4072 -s 756
    3⤵
    - Program crash
    PID:2968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4072 -ip 4072
1⤵
PID:1240

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4072-0-0x0000000010000000-0x0000000010016000-memory.dmp

Filesize
88KB

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memory/4072-1-0x0000000010000000-0x0000000010016000-memory.dmp

Filesize
88KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads