1a9afbc2b7671c4b6b355da6da1572b1592aa9987396c332fa9bd2d07fca60e0

Analysis

user interaction
yes
max time kernel
22s
max time network
23s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-ja
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-jalocale:ja-jpos:windows11-ltsc_2024-x64systemwindows
submitted
08/10/2026, 12:20

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
1a9afbc2b7671c4b6b355da6da1572b1592aa9987396c332fa9bd2d07fca60e0.exe
Size 59KB
Sample261008-phrxmayt2m
SHA256 1a9afbc2b7671c4b6b355da6da1572b1592aa9987396c332fa9bd2d07fca60e0
MD5 8e8b9b52536b4ec6b380201db4d3e898
SHA1 4bef79953a5c890139d817bec809cceacde97c22
SHA512 38f5483dd8bde7f83b9f4968c9a993397af4339082e837ae06c568781abf77923ab832600fdd7da4cd894844e3d144040acd8630e1c01cffbb93c062d511cee7
SSDEEP 1536:3ITRdNtOEHJjYNTLmqZ6vTy63i6EBXlLOUpEc:3CRTtlpsZLZ6vTy5LOUpEc
TLSH
T11C533A22B384C5A2D4162170051987BA1A75F931632C8BCBBFD5BD4EAF643D2E33661F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2536	wdr201b.exe
120	wdr201b.exe

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\USER\S-1-5-21-4154726816-2055034831-2297277433-1000\Software\Microsoft\Windows\CurrentVersion\Run\W201b Driver = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\wdr201b.exe\""	1a9afbc2b7671c4b6b355da6da1572b1592aa9987396c332fa9bd2d07fca60e0.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\D:	wdr201b.exe
File opened (read-only)	\??\H:	wdr201b.exe
File opened (read-only)	\??\I:	wdr201b.exe
File opened (read-only)	\??\J:	wdr201b.exe
File opened (read-only)	\??\W:	wdr201b.exe
File opened (read-only)	\??\G:	wdr201b.exe
File opened (read-only)	\??\N:	wdr201b.exe
File opened (read-only)	\??\V:	wdr201b.exe
File opened (read-only)	\??\Y:	wdr201b.exe
File opened (read-only)	\??\Z:	wdr201b.exe
File opened (read-only)	\??\A:	wdr201b.exe
File opened (read-only)	\??\P:	wdr201b.exe
File opened (read-only)	\??\R:	wdr201b.exe
File opened (read-only)	\??\S:	wdr201b.exe
File opened (read-only)	\??\T:	wdr201b.exe
File opened (read-only)	\??\U:	wdr201b.exe
File opened (read-only)	\??\X:	wdr201b.exe
File opened (read-only)	\??\B:	wdr201b.exe
File opened (read-only)	\??\K:	wdr201b.exe
File opened (read-only)	\??\L:	wdr201b.exe
File opened (read-only)	\??\M:	wdr201b.exe
File opened (read-only)	\??\O:	wdr201b.exe
File opened (read-only)	\??\Q:	wdr201b.exe

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

System Information Discovery
T1082

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	wdr201b.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	wdr201b.exe

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	wdr201b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1a9afbc2b7671c4b6b355da6da1572b1592aa9987396c332fa9bd2d07fca60e0.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 1136 wrote to memory of 2536	1136	1a9afbc2b7671c4b6b355da6da1572b1592aa9987396c332fa9bd2d07fca60e0.exe	89

C:\Users\Admin\AppData\Local\Temp\1a9afbc2b7671c4b6b355da6da1572b1592aa9987396c332fa9bd2d07fca60e0.exe
"C:\Users\Admin\AppData\Local\Temp\1a9afbc2b7671c4b6b355da6da1572b1592aa9987396c332fa9bd2d07fca60e0.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1136
- C:\Users\Admin\AppData\Local\Temp\wdr201b.exe
  C:\Users\Admin\AppData\Local\Temp\wdr201b.exe
  2⤵
  - Executes dropped EXE
  - Enumerates connected drives
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  PID:2536

C:\Users\Admin\AppData\Local\Temp\wdr201b.exe
"C:\Users\Admin\AppData\Local\Temp\wdr201b.exe"
1⤵
- Executes dropped EXE
PID:120

Network

MITRE ATT&CK Enterprise v16

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

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

wdr201b.exe

Path C:\Users\Admin\AppData\Local\Temp\wdr201b.exe
Size 59KB
SHA256 1a9afbc2b7671c4b6b355da6da1572b1592aa9987396c332fa9bd2d07fca60e0
MD5 8e8b9b52536b4ec6b380201db4d3e898
SHA1 4bef79953a5c890139d817bec809cceacde97c22
SHA512 38f5483dd8bde7f83b9f4968c9a993397af4339082e837ae06c568781abf77923ab832600fdd7da4cd894844e3d144040acd8630e1c01cffbb93c062d511cee7
SSDEEP 1536:3ITRdNtOEHJjYNTLmqZ6vTy63i6EBXlLOUpEc:3CRTtlpsZLZ6vTy5LOUpEc
TLSH
T11C533A22B384C5A2D4162170051987BA1A75F931632C8BCBBFD5BD4EAF643D2E33661F
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/120-4-0x0000000000400000-0x0000000000419000-memory.dmp

Download

memory/1136-0-0x0000000000400000-0x0000000000419000-memory.dmp

Download

memory/1136-5-0x0000000000400000-0x0000000000419000-memory.dmp

Download

memory/2536-7-0x0000000000400000-0x0000000000419000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads