f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65

General

Target

f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe
Size

839KB
MD5

b3c2d66e8359f2b7e6a28c82e69ce611
SHA1

6449776bcc2b76c5317471689b3e04b6c6183870
SHA256

f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65
SHA512

8dd801ebe37e68f9c0d879d8cc33e2cc416d1417278632209d19411f02e2f371351678de498d940d66a491a3a374648e465a36541c2df9172f562ad5dc63785f
SSDEEP

24576:4mIS04YNEMuExDiU6E5R9s8xY/2l/detnIbt+rH:7Q4auS+UjfU2TedIbt+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	f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe

Executes dropped EXE 1 IoCs

pid	Process
4084	AudioDriver.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe
File created	C:\Windows\assembly\Desktop.ini	f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.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	f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe
4084	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4084	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4084	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4084	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 4084	2872	f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe	82
PID 2872 wrote to memory of 4084	2872	f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe	82
PID 2872 wrote to memory of 4084	2872	f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe	82

C:\Users\Admin\AppData\Local\Temp\f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.exe
"C:\Users\Admin\AppData\Local\Temp\f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65.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:2872
- 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:4084

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

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Downloads

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

Filesize
839KB

MD5
b3c2d66e8359f2b7e6a28c82e69ce611

SHA1
6449776bcc2b76c5317471689b3e04b6c6183870

SHA256
f1c3730640cff981b26a31d45a759bae4339512b63ef57ad310cbe4df8d40a65

SHA512
8dd801ebe37e68f9c0d879d8cc33e2cc416d1417278632209d19411f02e2f371351678de498d940d66a491a3a374648e465a36541c2df9172f562ad5dc63785f

Download Submit
memory/2872-0-0x00000000750B2000-0x00000000750B3000-memory.dmp

Filesize
4KB

Download
memory/2872-1-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/2872-2-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/2872-19-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/4084-18-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/4084-20-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/4084-21-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/4084-22-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download

Analysis

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