9c3f8df80193c085912c9950c58051ae77c321975784cc069ceacd4f57d5861d

Analysis

max time kernel
11s
max time network
14s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
24-03-2023 00:10

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Reason

Machine shutdown

Report Analysis Logs

General

Target

PowerPoint.exe
Size

136KB
MD5

70108103a53123201ceb2e921fcfe83c
SHA1

c71799a6a6d09ee758b04cdf90a4ab76fbd2a7e3
SHA256

9c3f8df80193c085912c9950c58051ae77c321975784cc069ceacd4f57d5861d
SHA512

996701c65eee7f781c2d22dce63f4a95900f36b97a99dcf833045bce239a08b3c2f6326b3a808431cdab92d59161dd80763e44126578e160d79b7095175d276b
SSDEEP

1536:3VrdxBvcGdDHHtWv8udA1JYREgJ/qEOpsChnU4V1lyqHv4vAmOG9HSDKRppppp5B:1H5D0dSgo7ppTV1lyqPOAmOG9HSOD

Score

7^/10

bootkit persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

sys3.exe

pid process

1168 sys3.exe
Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

PowerPoint.exesys3.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 PowerPoint.exe
File opened for modification \??\PHYSICALDRIVE0 sys3.exe

pid	process
1168	sys3.exe

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	PowerPoint.exe
File opened for modification	\??\PHYSICALDRIVE0	sys3.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "218"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

sys3.exe

description pid process

Token: SeShutdownPrivilege 1168 sys3.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LogonUI.exe

pid process

1552 LogonUI.exe

description	pid	process
Token: SeShutdownPrivilege	1168	sys3.exe

pid	process
1552	LogonUI.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

PowerPoint.exe

description	pid	process	target process
PID 3180 wrote to memory of 1168	3180	PowerPoint.exe	sys3.exe
PID 3180 wrote to memory of 1168	3180	PowerPoint.exe	sys3.exe
PID 3180 wrote to memory of 1168	3180	PowerPoint.exe	sys3.exe

C:\Users\Admin\AppData\Local\Temp\PowerPoint.exe
"C:\Users\Admin\AppData\Local\Temp\PowerPoint.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:3180

C:\Users\Admin\AppData\Local\Temp\sys3.exe
C:\Users\Admin\AppData\Local\Temp\\sys3.exe
2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
PID:1168

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39a0855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:1552

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\sys3.exe
Filesize
136KB

MD5
70108103a53123201ceb2e921fcfe83c

SHA1
c71799a6a6d09ee758b04cdf90a4ab76fbd2a7e3

SHA256
9c3f8df80193c085912c9950c58051ae77c321975784cc069ceacd4f57d5861d

SHA512
996701c65eee7f781c2d22dce63f4a95900f36b97a99dcf833045bce239a08b3c2f6326b3a808431cdab92d59161dd80763e44126578e160d79b7095175d276b

Download Submit
C:\Users\Admin\AppData\Local\Temp\sys3.exe
Filesize
136KB

MD5
70108103a53123201ceb2e921fcfe83c

SHA1
c71799a6a6d09ee758b04cdf90a4ab76fbd2a7e3

SHA256
9c3f8df80193c085912c9950c58051ae77c321975784cc069ceacd4f57d5861d

SHA512
996701c65eee7f781c2d22dce63f4a95900f36b97a99dcf833045bce239a08b3c2f6326b3a808431cdab92d59161dd80763e44126578e160d79b7095175d276b

Download Submit
C:\Users\Admin\AppData\Local\Temp\systm.txt
Filesize
48B

MD5
aa142cb69ceb2968adc611552d279441

SHA1
ce306e86d2a19a7b7a71cd64aefcee4df54d4e1f

SHA256
751ad9c6ef87948d1d4bb1e6ca4d8317dbbead9df007606686fa3ac28c20e5a9

SHA512
e12d96dc6ab640b3d5648566f10b0b71cc97a622290f621e76b7042f99767a7c38e9d1bf056cdf718a9fdc6c90ed2df297a660c8e4d03931022dfac0423066a8

Download Submit
memory/3180-139-0x000000002AA00000-0x000000002AA24000-memory.dmp

Filesize
144KB

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