f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2

Analysis

max time kernel
82s
max time network
34s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 15:47

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General

Target

f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe
Size

132KB
MD5

4f556d174f04df97347717fb1a884f84
SHA1

7867025b7762866f3253e787d590968b6ef82658
SHA256

f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2
SHA512

a8714b67374d4a0ce61aa0e914aedb42b30611192c99f3d8cecb4d12ca00c9d86a0f2a8a8b677be3fc79e245dedf53fa03dbc6eb73d2e513e6b63d554edf965e
SSDEEP

1536:6cxjNiQseTeQOmckdJh8IGXu7NJ79p9vDMPBOGyR72FO3vhsnUWryYshxM7stww:6a5a41dJhdZQPBOGyR7FOEh67aww

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\RECYCLER\\S-1-5-21-0243556031-888888379-781863308-44731715\\73u3e1.exe"	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\77353435 = "C:\\RECYCLER\\S-1-5-21-0243556031-888888379-781863308-44731715\\73u3e1.exe"	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

Drops desktop.ini file(s) 1 IoCs

Processes:

f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

description	ioc	process
File created	C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-44731715\Desktop.ini	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Taskman = "C:\\RECYCLER\\S-1-5-21-0243556031-888888379-781863308-44731715\\73u3e1.exe"	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

pid	process
1644	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe
1644	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe
1644	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe

description	pid	process	target process
PID 1644 wrote to memory of 1284	1644	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe	Explorer.EXE
PID 1644 wrote to memory of 1284	1644	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe	Explorer.EXE
PID 1644 wrote to memory of 1284	1644	f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe	Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe
"C:\Users\Admin\AppData\Local\Temp\f1aed10c42850ad60c330548e5363c7145b57b3fc706d2bf56de6b4e3395d0e2.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops desktop.ini file(s)
- Modifies WinLogon
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1644

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1284

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/1644-54-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

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