822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800

General

Target

822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
Size

26KB
MD5

35f1c094070892376e1b06c7663f88cf
SHA1

246b6ba9c283cf5376acd8327c381dd44d9020bd
SHA256

822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800
SHA512

4e14c6018663cddfdcbb737f62178438469be6f302cc6aa180038aab50ca68b06866ae787d979d557e37397db152645df6a345bf6427a36285141b8e7205c130
SSDEEP

384:tD5bUAt3Huy/lTCF6mGSi4llrdnXpo+deYZwlx9O9SwOtV2+25jPV:t1bz3HuhHl7nXObV9O9Wto5jPV

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

audiohd.exeWUDHost.exe

pid process

3928 audiohd.exe
4328 WUDHost.exe

pid	process
3928	audiohd.exe
4328	WUDHost.exe

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

Processes:

822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exeaudiohd.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Audio Driver = "\"C:\\Windows\\system32\\audiohd.exe\""	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Audio Driver = "\"C:\\Windows\\system32\\audiohd.exe\""	audiohd.exe

Drops file in System32 directory 2 IoCs

Processes:

822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe

description	ioc	process
File created	C:\Windows\SysWOW64\audiohd.exe	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
File opened for modification	C:\Windows\SysWOW64\audiohd.exe	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe

Drops file in Program Files directory 2 IoCs

Processes:

822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\WUDHost.exe	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
File opened for modification	C:\Program Files (x86)\Common Files\WUDHost.exe	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 6 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

audiohd.exeWUDHost.exe822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	audiohd.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	WUDHost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	WUDHost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	audiohd.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exeaudiohd.exeWUDHost.exe

pid	process
4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
3928	audiohd.exe
3928	audiohd.exe
3928	audiohd.exe
3928	audiohd.exe
3928	audiohd.exe
3928	audiohd.exe
3928	audiohd.exe
3928	audiohd.exe
4328	WUDHost.exe
4328	WUDHost.exe
4328	WUDHost.exe
4328	WUDHost.exe
4328	WUDHost.exe
4328	WUDHost.exe
4328	WUDHost.exe
4328	WUDHost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exeaudiohd.exeWUDHost.exe

description	pid	process
Token: SeDebugPrivilege	4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
Token: SeDebugPrivilege	3928	audiohd.exe
Token: SeDebugPrivilege	4328	WUDHost.exe
Token: 33	3928	audiohd.exe
Token: SeIncBasePriorityPrivilege	3928	audiohd.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe

description	pid	process	target process
PID 4456 wrote to memory of 3928	4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe	audiohd.exe
PID 4456 wrote to memory of 3928	4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe	audiohd.exe
PID 4456 wrote to memory of 3928	4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe	audiohd.exe
PID 4456 wrote to memory of 4328	4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe	WUDHost.exe
PID 4456 wrote to memory of 4328	4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe	WUDHost.exe
PID 4456 wrote to memory of 4328	4456	822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe	WUDHost.exe

C:\Users\Admin\AppData\Local\Temp\822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe
"C:\Users\Admin\AppData\Local\Temp\822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4456

C:\Windows\SysWOW64\audiohd.exe
"C:\Windows\system32\audiohd.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3928

C:\Program Files (x86)\Common Files\WUDHost.exe
"C:\Program Files (x86)\Common Files\WUDHost.exe"
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4328

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Common Files\WUDHost.exe
Filesize
26KB

MD5
35f1c094070892376e1b06c7663f88cf

SHA1
246b6ba9c283cf5376acd8327c381dd44d9020bd

SHA256
822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800

SHA512
4e14c6018663cddfdcbb737f62178438469be6f302cc6aa180038aab50ca68b06866ae787d979d557e37397db152645df6a345bf6427a36285141b8e7205c130

Download Submit
C:\Program Files (x86)\Common Files\WUDHost.exe
Filesize
26KB

MD5
35f1c094070892376e1b06c7663f88cf

SHA1
246b6ba9c283cf5376acd8327c381dd44d9020bd

SHA256
822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800

SHA512
4e14c6018663cddfdcbb737f62178438469be6f302cc6aa180038aab50ca68b06866ae787d979d557e37397db152645df6a345bf6427a36285141b8e7205c130

Download Submit
C:\Windows\SysWOW64\audiohd.exe
Filesize
26KB

MD5
35f1c094070892376e1b06c7663f88cf

SHA1
246b6ba9c283cf5376acd8327c381dd44d9020bd

SHA256
822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800

SHA512
4e14c6018663cddfdcbb737f62178438469be6f302cc6aa180038aab50ca68b06866ae787d979d557e37397db152645df6a345bf6427a36285141b8e7205c130

Download Submit
C:\Windows\SysWOW64\audiohd.exe
Filesize
26KB

MD5
35f1c094070892376e1b06c7663f88cf

SHA1
246b6ba9c283cf5376acd8327c381dd44d9020bd

SHA256
822aff4a17a83193bb8954469030f8094986b1166ccbd551f07a77c720bfd800

SHA512
4e14c6018663cddfdcbb737f62178438469be6f302cc6aa180038aab50ca68b06866ae787d979d557e37397db152645df6a345bf6427a36285141b8e7205c130

Download Submit
memory/3928-134-0x0000000000000000-mapping.dmp

Download
memory/3928-141-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/3928-144-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4328-137-0x0000000000000000-mapping.dmp

Download
memory/4328-142-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4328-143-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4456-132-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4456-133-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4456-140-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads