022728f678d8dcc6cba20147595ed4099e9c98be0582c0f67518d5664e3b8523

Analysis

max time kernel
7s
max time network
35s
platform
windows10-2004_x64
resource
win10v2004-20240226-uk
resource tags

arch:x64arch:x86image:win10v2004-20240226-uklocale:uk-uaos:windows10-2004-x64systemwindows
submitted
03-03-2024 13:53

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Reason

Machine shutdown

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General

Target

Ransomware/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

2592 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
T1542.003

Processes:

PowerPoint.exesys3.exe

description ioc process

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

pid	process
2592	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
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
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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	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\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	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\ColorizationAfterglow = "3288365271"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	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 = "109"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

sys3.exe

description pid process

Token: SeShutdownPrivilege 2592 sys3.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LogonUI.exe

pid process

1956 LogonUI.exe

description	pid	process
Token: SeShutdownPrivilege	2592	sys3.exe

pid	process
1956	LogonUI.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

PowerPoint.exe

description	pid	process	target process
PID 1512 wrote to memory of 2592	1512	PowerPoint.exe	sys3.exe
PID 1512 wrote to memory of 2592	1512	PowerPoint.exe	sys3.exe
PID 1512 wrote to memory of 2592	1512	PowerPoint.exe	sys3.exe

C:\Users\Admin\AppData\Local\Temp\Ransomware\PowerPoint.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware\PowerPoint.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:1512

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:2592

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39f6055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:1956

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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\systm.txt
Filesize
59B

MD5
c6fdeeb95247be1d9f0bd6ee6521704d

SHA1
a3b25c46fe7cb083176a52cdb7309c0d27b3f77e

SHA256
81494f6719ec7fdd5242ac405776b42885c927ab544464840dd438ec1c8849eb

SHA512
20cedaeb2fd1e6b0605faa70b6401158e43eab323e6a6efa504182a2e67ba0fe324609ca482567a644f7d51ff88ae1136a5c2f80e7fdbdd289df7373a12e433e

Download Submit
memory/1512-0-0x000000002AA00000-0x000000002AA24000-memory.dmp

Filesize
144KB

Download
memory/1512-7-0x000000002AA00000-0x000000002AA24000-memory.dmp

Filesize
144KB

Download