44b2fce71e19743dafc76479e2a5bb51e28edb71d5789d7d532827eae71a36b4

Reason

Machine shutdown

General

Target

44b2fce71e19743dafc76479e2a5bb51e28edb71d5789d7d532827eae71a36b4.exe
Size

26KB
MD5

39b6b24fff9e56ae1fc6131bd1d94e69
SHA1

bf413131c02376d8a42e7a412bccd5e0335b20da
SHA256

44b2fce71e19743dafc76479e2a5bb51e28edb71d5789d7d532827eae71a36b4
SHA512

8491cf125e3d8d0b76f36465f8c18615895939b99d91b8b90addb563e4dc093309cd2ccd390b7755a6757958632893d4a16f6a3a3277470a289facaee8ed94b3
SSDEEP

384:0bixvgtO4tUE06LPCz+Ew39VrBmGmR5uXTW87nG107vJUdObyh5A3G5aAirOpc15:0WxEOoUERi+EsecjjmyWL3AWs6RW

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1604	Au_.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1400-132-0x0000000000400000-0x0000000000432000-memory.dmp	upx
behavioral2/files/0x0008000000022f71-134.dat	upx
behavioral2/memory/1400-136-0x0000000000400000-0x0000000000432000-memory.dmp	upx
behavioral2/files/0x0008000000022f71-135.dat	upx
behavioral2/memory/1604-137-0x0000000000400000-0x0000000000432000-memory.dmp	upx
behavioral2/memory/1604-138-0x0000000000400000-0x0000000000432000-memory.dmp	upx

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\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "182"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	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\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\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1604	Au_.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1164	LogonUI.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 1604	1400	44b2fce71e19743dafc76479e2a5bb51e28edb71d5789d7d532827eae71a36b4.exe	80
PID 1400 wrote to memory of 1604	1400	44b2fce71e19743dafc76479e2a5bb51e28edb71d5789d7d532827eae71a36b4.exe	80
PID 1400 wrote to memory of 1604	1400	44b2fce71e19743dafc76479e2a5bb51e28edb71d5789d7d532827eae71a36b4.exe	80

C:\Users\Admin\AppData\Local\Temp\44b2fce71e19743dafc76479e2a5bb51e28edb71d5789d7d532827eae71a36b4.exe
"C:\Users\Admin\AppData\Local\Temp\44b2fce71e19743dafc76479e2a5bb51e28edb71d5789d7d532827eae71a36b4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1400
- 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:1604

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa398d055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:1164

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
26KB

MD5
39b6b24fff9e56ae1fc6131bd1d94e69

SHA1
bf413131c02376d8a42e7a412bccd5e0335b20da

SHA256
44b2fce71e19743dafc76479e2a5bb51e28edb71d5789d7d532827eae71a36b4

SHA512
8491cf125e3d8d0b76f36465f8c18615895939b99d91b8b90addb563e4dc093309cd2ccd390b7755a6757958632893d4a16f6a3a3277470a289facaee8ed94b3

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

Filesize
26KB

MD5
39b6b24fff9e56ae1fc6131bd1d94e69

SHA1
bf413131c02376d8a42e7a412bccd5e0335b20da

SHA256
44b2fce71e19743dafc76479e2a5bb51e28edb71d5789d7d532827eae71a36b4

SHA512
8491cf125e3d8d0b76f36465f8c18615895939b99d91b8b90addb563e4dc093309cd2ccd390b7755a6757958632893d4a16f6a3a3277470a289facaee8ed94b3

Download Submit
memory/1400-132-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1400-136-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1604-137-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1604-138-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download

Analysis

Sharing

Errors