ef24f39a146f193ca4cf6c2e62ca0a42a28f2f87585f38f904070b69418a0f0a

Analysis

max time kernel
154s
max time network
171s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
21/11/2022, 17:18

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General

Target

ef24f39a146f193ca4cf6c2e62ca0a42a28f2f87585f38f904070b69418a0f0a.dll
Size

160KB
MD5

21c1a214c5b419b0be4d436ee9018050
SHA1

75932768e31f7dff7447cbd0301222065cb18590
SHA256

ef24f39a146f193ca4cf6c2e62ca0a42a28f2f87585f38f904070b69418a0f0a
SHA512

575b5bea1f5918f2fb13f89038c20c6493e7f3bcba7ab3c1a207f89f843ddbb8be7465a9e1305aeb02df756a3c83ded4382eb087f0cc59ee0a4faa2fb1454d5a
SSDEEP

3072:zUtENadzm8QRVtfj42ZZHwiIjYMytMpDv/4cNB/ni4R4PG6HzK/4LfGKmjTj6Qcp:zUtENadztQRVtr/QTYMy69TPi4WO6HzE

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = ",rundll32.exe C:\\Windows\\system32\\070413.dll start"	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\mywinsys.ini	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1244	4708	WerFault.exe	82

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4708	rundll32.exe
4708	rundll32.exe
4708	rundll32.exe
4708	rundll32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4708	rundll32.exe
Token: SeDebugPrivilege	4708	rundll32.exe
Token: SeDebugPrivilege	4708	rundll32.exe
Token: SeDebugPrivilege	4708	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 4708	4984	rundll32.exe	82
PID 4984 wrote to memory of 4708	4984	rundll32.exe	82
PID 4984 wrote to memory of 4708	4984	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef24f39a146f193ca4cf6c2e62ca0a42a28f2f87585f38f904070b69418a0f0a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef24f39a146f193ca4cf6c2e62ca0a42a28f2f87585f38f904070b69418a0f0a.dll,#1
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4708
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 896
    3⤵
    - Program crash
    PID:1244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4708 -ip 4708
1⤵
PID:3240

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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