3d79d0b0fcaa165200205faf9a9fc8858e51072f8c9c7f4ac3aecc74c1c48167

Analysis

max time kernel
99s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18/08/2024, 09:55

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General

Target

4188e6b9061061d946909946d81d0c10N.exe
Size

135KB
MD5

4188e6b9061061d946909946d81d0c10
SHA1

05c8bee2af630442b51aa2d1938ffa464ca234b2
SHA256

3d79d0b0fcaa165200205faf9a9fc8858e51072f8c9c7f4ac3aecc74c1c48167
SHA512

3b31a54e22540ef841e35c8ac5d74b8f564fe0fddfae5413989df260ee443c45ad9598c4f5c6cb6f27740bddb1ff4573f10b535015eb121bbb274dbdb9b87aca
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOv:YfU/WF6QMauSuiWNi9eNOl0007NZIOv

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	4188e6b9061061d946909946d81d0c10N.exe

Executes dropped EXE 1 IoCs

pid	Process
1784	wuauclt.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3264-0-0x0000000000760000-0x0000000000788000-memory.dmp	upx
behavioral2/files/0x0007000000023469-3.dat	upx
behavioral2/memory/1784-4-0x0000000000CF0000-0x0000000000D18000-memory.dmp	upx
behavioral2/memory/3264-6-0x0000000000760000-0x0000000000788000-memory.dmp	upx
behavioral2/memory/1784-7-0x0000000000CF0000-0x0000000000D18000-memory.dmp	upx
behavioral2/memory/3264-8-0x0000000000760000-0x0000000000788000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run"	4188e6b9061061d946909946d81d0c10N.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004
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 3 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	4188e6b9061061d946909946d81d0c10N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuauclt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3264 wrote to memory of 1784	3264	4188e6b9061061d946909946d81d0c10N.exe	84
PID 3264 wrote to memory of 1784	3264	4188e6b9061061d946909946d81d0c10N.exe	84
PID 3264 wrote to memory of 1784	3264	4188e6b9061061d946909946d81d0c10N.exe	84
PID 3264 wrote to memory of 3132	3264	4188e6b9061061d946909946d81d0c10N.exe	100
PID 3264 wrote to memory of 3132	3264	4188e6b9061061d946909946d81d0c10N.exe	100
PID 3264 wrote to memory of 3132	3264	4188e6b9061061d946909946d81d0c10N.exe	100

C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe
"C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3264
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1784
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3132

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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:\ProgramData\Update\wuauclt.exe

Filesize
135KB

MD5
9a43a1b1bd3eee4fa469fbf2b132277e

SHA1
11bc285a35b966eee3207b072b86b6c3f6f20ef2

SHA256
ab683027ac2783b7154ddf4fc113ec166a95478bacd41119056f5e04813b5ead

SHA512
b144520a54dfeab881d39814218c2a2fbe4833742ce8b2551db50d3c60ba634e05902f208dcc84cd965f70a5d2055dc3894f61aaeeaac58f86f982299ff67695

Download Submit
memory/1784-4-0x0000000000CF0000-0x0000000000D18000-memory.dmp

Filesize
160KB

Download
memory/1784-7-0x0000000000CF0000-0x0000000000D18000-memory.dmp

Filesize
160KB

Download
memory/3264-0-0x0000000000760000-0x0000000000788000-memory.dmp

Filesize
160KB

Download
memory/3264-6-0x0000000000760000-0x0000000000788000-memory.dmp

Filesize
160KB

Download
memory/3264-8-0x0000000000760000-0x0000000000788000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads