8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b

General

Target

8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe
Size

839KB
MD5

0dcfd999de97c5a2547ffac4f17a9202
SHA1

e4c3b1f29ce47e4fb509c856302ed922998b66bb
SHA256

8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b
SHA512

04d01ea3afff1aa6e14a996e0e9c3a0a000eb849be82462c09115adb1ff2d403375bd7c97bf03522c145c2cdd087b17d87146c1ee6d5fbf3262bc0b7a1e8ad37
SSDEEP

24576:UFS04YNEMuExDiU6E5R9s8xY/2l/drtnIbt+r0:U34auS+UjfU2TrdIbt+r

Score

7^/10

discovery

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe

Executes dropped EXE 1 IoCs

pid	Process
4360	AudioDriver.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe
File created	C:\Windows\assembly\Desktop.ini	8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe

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	8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 39 IoCs

pid	Process
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe
4360	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4360	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4360	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4360	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1156 wrote to memory of 4360	1156	8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe	82
PID 1156 wrote to memory of 4360	1156	8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe	82
PID 1156 wrote to memory of 4360	1156	8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe	82

C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe
"C:\Users\Admin\AppData\Local\Temp\8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1156
- C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:4360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

Filesize
839KB

MD5
0dcfd999de97c5a2547ffac4f17a9202

SHA1
e4c3b1f29ce47e4fb509c856302ed922998b66bb

SHA256
8f5a080d71b52c8cc1f62b997ba880b0c92e4f9beb91b32b067f868fce91837b

SHA512
04d01ea3afff1aa6e14a996e0e9c3a0a000eb849be82462c09115adb1ff2d403375bd7c97bf03522c145c2cdd087b17d87146c1ee6d5fbf3262bc0b7a1e8ad37

Download Submit
memory/1156-0-0x0000000075582000-0x0000000075583000-memory.dmp

Filesize
4KB

Download
memory/1156-1-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/1156-2-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/1156-19-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/4360-18-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/4360-20-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/4360-21-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/4360-22-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download

Analysis

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