2658485e218c176ba75e2ab0df841c70c8528bad5622c2f5630fd81a8214212f

Analysis

max time kernel
20s
max time network
24s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
12-01-2023 03:26

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Reason

Machine shutdown

Report Analysis Logs

General

Target

Microsoft Office 2019 + Licencia/Office/OInstall.exe
Size

9.5MB
MD5

f71556138c9eb716330063156db4a6bc
SHA1

bd91945d407cbeee830c15280c8324459f0ff61a
SHA256

41ff83c380b958e918c4061c02a6077590d7630a01d7f2f0f448dc1a6fbf284a
SHA512

259642e8b2398122f00b031f6af4e79a2cea0831b4ef00c0f118f1fd28d32c92122a118921ce2af915f141273a2774ccf9abdfdc596175ac3c190e8f891c139e
SSDEEP

196608:vp1crEM65aqMLvUcm+oz3BkeBTAUW24t13Dr7m0mitn2xe7gXQZ+3jeRBTfYNCH1:hurEzabjm+4keB0vt1Dr7m0mc2xe7gAN

Score

8^/10

upx

Malware Config

Signatures

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral4/memory/4736-132-0x0000000000400000-0x00000000015B4000-memory.dmp	upx
behavioral4/memory/4736-134-0x0000000000400000-0x00000000015B4000-memory.dmp	upx
behavioral4/memory/4736-135-0x0000000000400000-0x00000000015B4000-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
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\ColorizationGlassAttribute = "1"	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
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\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 (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\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "240"	LogonUI.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4092	LogonUI.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 672	4736	OInstall.exe	81
PID 4736 wrote to memory of 672	4736	OInstall.exe	81

C:\Users\Admin\AppData\Local\Temp\Microsoft Office 2019 + Licencia\Office\OInstall.exe
"C:\Users\Admin\AppData\Local\Temp\Microsoft Office 2019 + Licencia\Office\OInstall.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Windows\system32\cmd.exe
  "C:\Windows\Sysnative\cmd.exe" /D /c copy C:\Windows\system32\Tasks\OInstall "C:\Windows\Temp\OInstall.tmp" /Y
  2⤵
  PID:672

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39d7055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4092

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

Replay Monitor

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Downloads

memory/672-133-0x0000000000000000-mapping.dmp

Download
memory/4736-132-0x0000000000400000-0x00000000015B4000-memory.dmp

Filesize
17.7MB

Download
memory/4736-134-0x0000000000400000-0x00000000015B4000-memory.dmp

Filesize
17.7MB

Download
memory/4736-135-0x0000000000400000-0x00000000015B4000-memory.dmp

Filesize
17.7MB

Download