df5a9479c573b050707c2a22d50f962b92906d325ea7b9be934551aeb2cc8c0e

Analysis

max time kernel
10s
max time network
11s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2024, 09:23

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Reason

Machine shutdown

Report Analysis Logs

General

Target

uninst.exe
Size

25KB
MD5

1fa0b902733e4bd02d4df3e5f8a88e2c
SHA1

ee5b6aa728ec9e3bc77f3ad98b497f64bb98e2f9
SHA256

f22b5fc284941a8be258378c57ae1a1c89e52f871ccb0f29c2ec18ee8c888376
SHA512

75139436ad94520e7d44b29e3116d3ad79f0ba3946236794066ca3d8fec853b81193ef5393e764858a0c02e3bb0b7adbc6bd8d7c5d871a5e6ace602c341a6934
SSDEEP

768:T2d/1YcVRHJxjnaDOGKiFdWEgzyyyUyyyyyiMvc5+9a3:YtVRpxjnaaGKsUlMvcEa3

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2620	Au_.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral8/memory/4104-0-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral8/files/0x0007000000023456-4.dat	upx
behavioral8/memory/4104-8-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral8/memory/2620-11-0x0000000000400000-0x0000000000434000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uninst.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	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\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "233"	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\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\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\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2620	Au_.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2792	LogonUI.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 2620	4104	uninst.exe	82
PID 4104 wrote to memory of 2620	4104	uninst.exe	82
PID 4104 wrote to memory of 2620	4104	uninst.exe	82

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4104
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2620

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3990855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
25KB

MD5
1fa0b902733e4bd02d4df3e5f8a88e2c

SHA1
ee5b6aa728ec9e3bc77f3ad98b497f64bb98e2f9

SHA256
f22b5fc284941a8be258378c57ae1a1c89e52f871ccb0f29c2ec18ee8c888376

SHA512
75139436ad94520e7d44b29e3116d3ad79f0ba3946236794066ca3d8fec853b81193ef5393e764858a0c02e3bb0b7adbc6bd8d7c5d871a5e6ace602c341a6934

Download Submit
memory/2620-11-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4104-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4104-8-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download