orcus | b01456c3a84a767651da9369abcbb615b53147dec99298ca2ad506bcbcd802e7

General

Target

orcaudiodriver.exe
Size

840KB
MD5

2aeee4bf30199dd7f6f1dbb397b8b405
SHA1

a2ab3bf06299a8c7db10cd9e12783cb359732f12
SHA256

b01456c3a84a767651da9369abcbb615b53147dec99298ca2ad506bcbcd802e7
SHA512

96ba7792d5eb619ede1c15d97765128e45b8aa2ce60096763f2d05fc981e2d9794021ec098a4e3d10bde6c6e8309c0ee86d7d450f1377fe43e22579489abe558
SSDEEP

24576:iyPS04YNEMuExDiU6E5R9s8xY/2l/dL5Ibt+rj:iyl4auS+UjfU2TFIbt+r

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

192.168.10.8

91.92.247.123

tech11.ddns.net

tech22.ddns.net

Mutex

b114dc668e5545c89c2612d3974a73ab

Attributes

administration_rights_required
false
anti_debugger
false
anti_tcp_analyzer
false
antivm
false
autostart_method
2
change_creation_date
false
force_installer_administrator_privileges
false
hide_file
false
install
false
installation_folder
%appdata%\Microsoft\Speech\AudioDriver.exe
installservice
false
keylogger_enabled
false
newcreationdate
04/04/2023 06:41:34
plugins
AgEAAA==
reconnect_delay
10000
registry_autostart_keyname
Audio HD Driver
registry_hidden_autostart
false
set_admin_flag
false
tasksch_name
Audio HD Driver
tasksch_request_highest_privileges
false
try_other_autostart_onfail
false

aes.plain

Signatures

Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
rat spyware stealer orcus

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	orcaudiodriver.exe

Executes dropped EXE 2 IoCs

pid	Process
4388	WindowsInput.exe
2172	AudioDriver.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe	orcaudiodriver.exe
File opened for modification	C:\Windows\SysWOW64\WindowsInput.InstallLog	WindowsInput.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	orcaudiodriver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 39 IoCs

pid	Process
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe
2172	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2172	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2172	AudioDriver.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2172	AudioDriver.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4204 wrote to memory of 4388	4204	orcaudiodriver.exe	85
PID 4204 wrote to memory of 4388	4204	orcaudiodriver.exe	85
PID 4204 wrote to memory of 2172	4204	orcaudiodriver.exe	88
PID 4204 wrote to memory of 2172	4204	orcaudiodriver.exe	88
PID 4204 wrote to memory of 2172	4204	orcaudiodriver.exe	88

C:\Users\Admin\AppData\Local\Temp\orcaudiodriver.exe
"C:\Users\Admin\AppData\Local\Temp\orcaudiodriver.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4204
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:4388
- 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
  - Suspicious use of SetWindowsHookEx
  PID:2172

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
840KB

MD5
2aeee4bf30199dd7f6f1dbb397b8b405

SHA1
a2ab3bf06299a8c7db10cd9e12783cb359732f12

SHA256
b01456c3a84a767651da9369abcbb615b53147dec99298ca2ad506bcbcd802e7

SHA512
96ba7792d5eb619ede1c15d97765128e45b8aa2ce60096763f2d05fc981e2d9794021ec098a4e3d10bde6c6e8309c0ee86d7d450f1377fe43e22579489abe558

Download Submit
C:\Windows\SysWOW64\WindowsInput.InstallLog

Filesize
224B

MD5
e469dda91ae810a1f94c96060f3f8a65

SHA1
0b4b3b0f6f937016b1e045ce5313ee2a65a38630

SHA256
d42fee8db8eb0e047ca53ad59b1c9bc69fe04993be36fec502e3532371908842

SHA512
2eb4037361c03e195c642a53f55a3182a6df19903db503060e366f2394750e64ae04fdaace61ef5a6dba649defc88322d78edd2928bc53ebd1ce11d68cc88dac

Download Submit
C:\Windows\SysWOW64\WindowsInput.InstallLog

Filesize
597B

MD5
c2291863df7c2d3038ce3c22fa276506

SHA1
7b7d2bc07a6c35523807342c747c9b6a19f3184e

SHA256
14504199bede3f46129969dbd2b7680f2e5b7fcd73a3e427ce1bb6217a6d13da

SHA512
00bf40174a67e3e663d18a887c5b461a1e5ead0b27f0a139d87969158c58f4ca72cfa5a731dda239356192ca4cb5ac6ae2b0e37401d534e686cabacd3cbee8fa

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe

Filesize
21KB

MD5
e854a4636afc652b320e12e50ba4080e

SHA1
8a4ac6ecc22ee5f3a8ec846d38b41ff18c641fdc

SHA256
94b9c78c6fa2bf61fba20a08ad4563f7dd2f5668c28eff227965ce0a2032d5d5

SHA512
30aabd5079b6ed0948eb70fd18e9166096e4ba5d1d47fc35b7270f931d19bbe6cd929b6010f70297bf5272dc5a79e2523721354d211c4080d68ad8d17e316118

Download Submit
memory/2172-70-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

Filesize
4KB

Download
memory/2172-72-0x0000000074E00000-0x00000000755B0000-memory.dmp

Filesize
7.7MB

Download
memory/2172-73-0x00000000057E0000-0x00000000057F8000-memory.dmp

Filesize
96KB

Download
memory/2172-74-0x0000000005A70000-0x0000000005C32000-memory.dmp

Filesize
1.8MB

Download
memory/2172-75-0x0000000005860000-0x0000000005870000-memory.dmp

Filesize
64KB

Download
memory/2172-76-0x0000000006010000-0x000000000601A000-memory.dmp

Filesize
40KB

Download
memory/2172-77-0x0000000074E00000-0x00000000755B0000-memory.dmp

Filesize
7.7MB

Download
memory/4204-5-0x00000000052B0000-0x0000000005342000-memory.dmp

Filesize
584KB

Download
memory/4204-4-0x00000000053C0000-0x0000000005964000-memory.dmp

Filesize
5.6MB

Download
memory/4204-8-0x0000000005360000-0x000000000536C000-memory.dmp

Filesize
48KB

Download
memory/4204-7-0x0000000005390000-0x00000000053B2000-memory.dmp

Filesize
136KB

Download
memory/4204-6-0x0000000005220000-0x000000000526C000-memory.dmp

Filesize
304KB

Download
memory/4204-3-0x0000000074E00000-0x00000000755B0000-memory.dmp

Filesize
7.7MB

Download
memory/4204-1-0x0000000000370000-0x0000000000448000-memory.dmp

Filesize
864KB

Download
memory/4204-71-0x0000000074E00000-0x00000000755B0000-memory.dmp

Filesize
7.7MB

Download
memory/4204-2-0x00000000027F0000-0x00000000027FA000-memory.dmp

Filesize
40KB

Download
memory/4204-0-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

Filesize
4KB

Download
memory/4204-57-0x0000000005F90000-0x0000000005FDE000-memory.dmp

Filesize
312KB

Download
memory/4204-58-0x0000000005FF0000-0x0000000006008000-memory.dmp

Filesize
96KB

Download
memory/4388-22-0x0000000001690000-0x00000000016B0000-memory.dmp

Filesize
128KB

Download
memory/4388-53-0x00007FFA10130000-0x00007FFA10AD1000-memory.dmp

Filesize
9.6MB

Download
memory/4388-36-0x000000001CD60000-0x000000001CDFC000-memory.dmp

Filesize
624KB

Download
memory/4388-35-0x000000001C7F0000-0x000000001CCBE000-memory.dmp

Filesize
4.8MB

Download
memory/4388-27-0x000000001BE90000-0x000000001BEB4000-memory.dmp

Filesize
144KB

Download
memory/4388-24-0x00007FFA10130000-0x00007FFA10AD1000-memory.dmp

Filesize
9.6MB

Download
memory/4388-21-0x0000000001650000-0x0000000001668000-memory.dmp

Filesize
96KB

Download
memory/4388-23-0x00007FFA10130000-0x00007FFA10AD1000-memory.dmp

Filesize
9.6MB

Download
memory/4388-20-0x00007FFA103E5000-0x00007FFA103E6000-memory.dmp

Filesize
4KB

Download

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