645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29

Analysis

max time kernel
150s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 11:07

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General

Target

645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe
Size

120KB
MD5

9fe641ab9613060c0c95c1db0929278e
SHA1

8f05cd15aacb9a06011c3df82c0cb70c71e007c1
SHA256

645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29
SHA512

21246f0bcb223d6cd470a0a0fec0c015406bc4a15b579ccef4d95b734212d495e0a511d51a586ca83770387a8dbc4d9b77749a694123cabc5c8fc59b1f7f22b0
SSDEEP

3072:G+l80YoHbf7/BZp7qgWY01NPi9Eyo+XxtNGl:9l+c75ZpeFYOM9E+Xxnc

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

kernels32.exe

pid process

1632 kernels32.exe

pid	process
1632	kernels32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

kernels32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	kernels32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Service System = "\"c:\\windows\\kernels32.exe\""	kernels32.exe

Drops file in Windows directory 3 IoCs

Processes:

645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exekernels32.exe

description	ioc	process
File created	\??\c:\windows\kernels32.exe	645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe
File opened for modification	\??\c:\windows\kernels32.exe	645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe
File created	C:\Windows\ieupdate.dat	kernels32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exekernels32.exe

pid process

2016 645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe
1632 kernels32.exe

pid	process
2016	645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe
1632	kernels32.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe

description	pid	process	target process
PID 2016 wrote to memory of 1632	2016	645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe	kernels32.exe
PID 2016 wrote to memory of 1632	2016	645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe	kernels32.exe
PID 2016 wrote to memory of 1632	2016	645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe	kernels32.exe
PID 2016 wrote to memory of 1632	2016	645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe	kernels32.exe

C:\Users\Admin\AppData\Local\Temp\645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe
"C:\Users\Admin\AppData\Local\Temp\645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2016

\??\c:\windows\kernels32.exe
c:\windows\kernels32.exe
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
PID:1632

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

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

C:\Windows\kernels32.exe

Filesize
120KB

MD5
9fe641ab9613060c0c95c1db0929278e

SHA1
8f05cd15aacb9a06011c3df82c0cb70c71e007c1

SHA256
645ff7f8634df258453d6b839affda96e5d649d172fa300b5cb627d832d54f29

SHA512
21246f0bcb223d6cd470a0a0fec0c015406bc4a15b579ccef4d95b734212d495e0a511d51a586ca83770387a8dbc4d9b77749a694123cabc5c8fc59b1f7f22b0

Download Submit
memory/1632-56-0x0000000000000000-mapping.dmp

Download
memory/1632-60-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/1632-63-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1632-65-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2016-61-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2016-62-0x0000000002820000-0x00000000029C6000-memory.dmp

Filesize
1.6MB

Download
memory/2016-64-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download