a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648

Analysis

max time kernel
148s
max time network
154s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
01/12/2022, 00:11

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General

Target

a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
Size

327KB
MD5

947e41ee529a41dae4a13dbe0b14c75f
SHA1

e26bdebaff268424f7ab64df4dd608de385c410c
SHA256

a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648
SHA512

5c5007aa489fc22f21d18385742e8ddfc7dc46670647a779044b93d6aa257b2bee6e9357327c7397e088460d76cb02674d53f422b5aea3bbdc444fc72ca1badf
SSDEEP

6144:83MVk9U3mgJukP+2Ucpn5qAKP1UkrMhcOIk8kRL5YejF:hCU0aZLLqEkrMhct8OUF

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\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\A1F91A~1.EXE,"	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\userinit = "C:\\Users\\Admin\\AppData\\Local\\Temp\\A1F91A~1.EXE"	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\fe78d0d3 = "'n\u008fƒW"	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\System = "C:\\Users\\Admin\\AppData\\Local\\Temp\\A1F91A~1.EXE"	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
Token: SeSecurityPrivilege	1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
Token: SeSecurityPrivilege	1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
Token: SeSecurityPrivilege	1100	a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe

C:\Users\Admin\AppData\Local\Temp\a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe
"C:\Users\Admin\AppData\Local\Temp\a1f91a2a440c70f319930d870e1ff2a469df9b86753b1666e9a08695cec0b648.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Modifies WinLogon
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1100

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1100-54-0x0000000074AD1000-0x0000000074AD3000-memory.dmp

Filesize
8KB

Download
memory/1100-55-0x000000007EF40000-0x000000007EFA9000-memory.dmp

Filesize
420KB

Download
memory/1100-56-0x0000000000400000-0x00000000004EF000-memory.dmp

Filesize
956KB

Download
memory/1100-57-0x0000000001F20000-0x0000000001FD2000-memory.dmp

Filesize
712KB

Download
memory/1100-59-0x0000000001F20000-0x0000000001FD2000-memory.dmp

Filesize
712KB

Download
memory/1100-58-0x0000000001F20000-0x0000000001FD2000-memory.dmp

Filesize
712KB

Download
memory/1100-61-0x0000000001F20000-0x0000000001FD2000-memory.dmp

Filesize
712KB

Download
memory/1100-62-0x0000000001F20000-0x0000000001FD2000-memory.dmp

Filesize
712KB

Download
memory/1100-64-0x0000000001F20000-0x0000000001FD2000-memory.dmp

Filesize
712KB

Download
memory/1100-65-0x00000000022D0000-0x0000000002388000-memory.dmp

Filesize
736KB

Download
memory/1100-66-0x00000000022D0000-0x0000000002388000-memory.dmp

Filesize
736KB

Download