75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727

Analysis

max time kernel
164s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2022, 06:29

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General

Target

75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727.exe
Size

23KB
MD5

6f88963d464830430469c7b5d6de141b
SHA1

c747aa7962ee3d2631e853ad78cf72892e9560dc
SHA256

75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727
SHA512

6e992354b51f427be864fd7b9704ac7fb916f56daf48e6fa62b11c77a1d5a6755a238ceea76d85b1b4aa3995d129af2ea532765ce50ab6553ae497e44d97f0bc
SSDEEP

384:cTo4PxCu/JGQIixuWmHAcChy7VxplTjGFrTZZqcqg15LCfuqUw6pkh4cltkOirOe:c3v/JxtKChyv4PZZqcqg166pkWbYRW

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1984	Au_.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "147"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	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\ColorizationAfterglowBalance = "10"	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\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\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	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\Themes\History\AutoColor = "0"	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\ColorizationColor = "3288365271"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1984	Au_.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4444	LogonUI.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 876 wrote to memory of 1984	876	75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727.exe	83
PID 876 wrote to memory of 1984	876	75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727.exe	83
PID 876 wrote to memory of 1984	876	75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727.exe	83

C:\Users\Admin\AppData\Local\Temp\75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727.exe
"C:\Users\Admin\AppData\Local\Temp\75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:876
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1984

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39d9055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4444

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
23KB

MD5
6f88963d464830430469c7b5d6de141b

SHA1
c747aa7962ee3d2631e853ad78cf72892e9560dc

SHA256
75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727

SHA512
6e992354b51f427be864fd7b9704ac7fb916f56daf48e6fa62b11c77a1d5a6755a238ceea76d85b1b4aa3995d129af2ea532765ce50ab6553ae497e44d97f0bc

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C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
23KB

MD5
6f88963d464830430469c7b5d6de141b

SHA1
c747aa7962ee3d2631e853ad78cf72892e9560dc

SHA256
75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727

SHA512
6e992354b51f427be864fd7b9704ac7fb916f56daf48e6fa62b11c77a1d5a6755a238ceea76d85b1b4aa3995d129af2ea532765ce50ab6553ae497e44d97f0bc

Download Submit