orcus | 8e0cc002df2a8b185bdecdc95d804f9c5366d32527fe2bd9abed65d6c18d27c7

General

Target

4.5.exe
Size

840KB
MD5

e971533dd68aaa5f6fb4435fb7615b4a
SHA1

afb72e2b101cfc01a9a840080bdb9a6581c74df0
SHA256

8e0cc002df2a8b185bdecdc95d804f9c5366d32527fe2bd9abed65d6c18d27c7
SHA512

316588f072aba109d6df300e104e120f1eb009862870c3a688384533c3ca55139aaf1ee341854ffff8cc4e6d8ead0a57e1960a4390a336cb552cfad94a959422
SSDEEP

24576:9yPS04YNEMuExDiU6E5R9s8xY/2l/dL5Ibt+rj:9yl4auS+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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	4.5.exe

Executes dropped EXE 1 IoCs

pid	Process
1036	AudioDriver.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	4.5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 39 IoCs

pid	Process
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe
1036	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1036	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1036	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1036	AudioDriver.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1036	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4704 wrote to memory of 1036	4704	4.5.exe	87
PID 4704 wrote to memory of 1036	4704	4.5.exe	87
PID 4704 wrote to memory of 1036	4704	4.5.exe	87

C:\Users\Admin\AppData\Local\Temp\4.5.exe
"C:\Users\Admin\AppData\Local\Temp\4.5.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4704
- 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:1036

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
840KB

MD5
e971533dd68aaa5f6fb4435fb7615b4a

SHA1
afb72e2b101cfc01a9a840080bdb9a6581c74df0

SHA256
8e0cc002df2a8b185bdecdc95d804f9c5366d32527fe2bd9abed65d6c18d27c7

SHA512
316588f072aba109d6df300e104e120f1eb009862870c3a688384533c3ca55139aaf1ee341854ffff8cc4e6d8ead0a57e1960a4390a336cb552cfad94a959422

Download Submit
memory/1036-30-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/1036-29-0x0000000005E40000-0x0000000005E4A000-memory.dmp

Filesize
40KB

Download
memory/1036-28-0x0000000005160000-0x0000000005170000-memory.dmp

Filesize
64KB

Download
memory/1036-27-0x0000000005940000-0x0000000005B02000-memory.dmp

Filesize
1.8MB

Download
memory/1036-26-0x00000000050A0000-0x00000000050B8000-memory.dmp

Filesize
96KB

Download
memory/1036-24-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/1036-23-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4704-4-0x00000000056F0000-0x0000000005C94000-memory.dmp

Filesize
5.6MB

Download
memory/4704-11-0x0000000005400000-0x0000000005418000-memory.dmp

Filesize
96KB

Download
memory/4704-10-0x00000000050D0000-0x000000000511E000-memory.dmp

Filesize
312KB

Download
memory/4704-25-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4704-6-0x0000000005040000-0x000000000508C000-memory.dmp

Filesize
304KB

Download
memory/4704-5-0x0000000005340000-0x00000000053D2000-memory.dmp

Filesize
584KB

Download
memory/4704-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/4704-3-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4704-2-0x0000000000DA0000-0x0000000000DAA000-memory.dmp

Filesize
40KB

Download
memory/4704-1-0x00000000003A0000-0x0000000000478000-memory.dmp

Filesize
864KB

Download

Analysis

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