55af1ee79176f2503dc6cee5464344e6bbcaa4e37b4ae7217922c8e56ec395cf

General

Target

keyauth Bypass‮nls..scr
Size

2.6MB
MD5

5361a2f1d174599ebc5b6cc31daf86f2
SHA1

ade74d0abac77203629b81513a739f11b39a52ef
SHA256

55af1ee79176f2503dc6cee5464344e6bbcaa4e37b4ae7217922c8e56ec395cf
SHA512

96381c583b975e4c2cd7ec70bd955936c48a9737036234241e37e73baf81c96cb28ab28d2fe3c53ed1e8ce0be641fba653d7e6877770cb8f60fb32f2c7b703b4
SSDEEP

49152:j8ASxr7FEi5LbunhHpj5G3FVhIdag5SNHeGJWrz:jTSt7FEGnCdpj5G3FVq18gGJ

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\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoftt\\DefenderProtector.exe\","	keyauth Bypass‮nls..scr

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	keyauth Bypass‮nls..scr
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	keyauth Bypass‮nls..scr

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1824	keyauth Bypass‮nls..scr
1824	keyauth Bypass‮nls..scr
1824	keyauth Bypass‮nls..scr

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1216	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1824	keyauth Bypass‮nls..scr
Token: SeShutdownPrivilege	1216	Explorer.EXE
Token: SeDebugPrivilege	1216	Explorer.EXE
Token: SeShutdownPrivilege	1216	Explorer.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1824 wrote to memory of 2020	1824	keyauth Bypass‮nls..scr	27
PID 1824 wrote to memory of 2020	1824	keyauth Bypass‮nls..scr	27
PID 1824 wrote to memory of 2020	1824	keyauth Bypass‮nls..scr	27
PID 1824 wrote to memory of 1216	1824	keyauth Bypass‮nls..scr	13

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1216
- C:\Users\Admin\AppData\Local\Temp\keyauth Bypass‮nls..scr
  "C:\Users\Admin\AppData\Local\Temp\keyauth Bypass‮nls..scr" /S
  2⤵
  - Modifies WinLogon for persistence
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1824
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Gngwnbcqyucvbwsgwyojoproject.sln
    3⤵
    - Modifies registry class
    PID:2020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Web Service

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

memory/1216-62-0x0000000003A80000-0x0000000003ADC000-memory.dmp

Filesize
368KB

Download
memory/1824-54-0x0000000000F30000-0x00000000011D0000-memory.dmp

Filesize
2.6MB

Download
memory/1824-55-0x000000001B190000-0x000000001B3F4000-memory.dmp

Filesize
2.4MB

Download
memory/1824-58-0x0000000000EB7000-0x0000000000ED6000-memory.dmp

Filesize
124KB

Download
memory/1824-59-0x0000000076D40000-0x0000000076EE9000-memory.dmp

Filesize
1.7MB

Download
memory/1824-60-0x0000000076D40000-0x0000000076EE9000-memory.dmp

Filesize
1.7MB

Download
memory/1824-61-0x0000000000EB7000-0x0000000000ED6000-memory.dmp

Filesize
124KB

Download
memory/1824-63-0x0000000000EB7000-0x0000000000ED6000-memory.dmp

Filesize
124KB

Download
memory/1824-64-0x0000000076D40000-0x0000000076EE9000-memory.dmp

Filesize
1.7MB

Download
memory/2020-57-0x000007FEFB5C1000-0x000007FEFB5C3000-memory.dmp

Filesize
8KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads