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Analysis
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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
Static task
static1
Behavioral task
behavioral1
Sample
75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727.exe
Resource
win10v2004-20221111-en
General
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Target
75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727.exe
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Size
23KB
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MD5
6f88963d464830430469c7b5d6de141b
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SHA1
c747aa7962ee3d2631e853ad78cf72892e9560dc
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SHA256
75bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727
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SHA512
6e992354b51f427be864fd7b9704ac7fb916f56daf48e6fa62b11c77a1d5a6755a238ceea76d85b1b4aa3995d129af2ea532765ce50ab6553ae497e44d97f0bc
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SSDEEP
384:cTo4PxCu/JGQIixuWmHAcChy7VxplTjGFrTZZqcqg15LCfuqUw6pkh4cltkOirOe:c3v/JxtKChyv4PZZqcqg166pkWbYRW
Malware Config
Signatures
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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.
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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
Processes
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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
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x4 /state0:0xa39d9055 /state1:0x41c64e6d1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4444
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
23KB
MD56f88963d464830430469c7b5d6de141b
SHA1c747aa7962ee3d2631e853ad78cf72892e9560dc
SHA25675bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727
SHA5126e992354b51f427be864fd7b9704ac7fb916f56daf48e6fa62b11c77a1d5a6755a238ceea76d85b1b4aa3995d129af2ea532765ce50ab6553ae497e44d97f0bc
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Filesize
23KB
MD56f88963d464830430469c7b5d6de141b
SHA1c747aa7962ee3d2631e853ad78cf72892e9560dc
SHA25675bd9bf29f83de77ac83175a97b4c8be94c75832857e22f5a92756cc9765c727
SHA5126e992354b51f427be864fd7b9704ac7fb916f56daf48e6fa62b11c77a1d5a6755a238ceea76d85b1b4aa3995d129af2ea532765ce50ab6553ae497e44d97f0bc