orcus | 227befcbc16bcd69e4f1b9b634492eba0c952e06b9ed94b199edce3804b84f51

General

Target

Sigma boy.exe
Size

839KB
MD5

5ff4807e24e3435c8e2d88be60086109
SHA1

3724453097aa75f412094aa9d72d53be07e99ef6
SHA256

227befcbc16bcd69e4f1b9b634492eba0c952e06b9ed94b199edce3804b84f51
SHA512

0f4a80c5e26b87bb5223d509111c9401ce763fd4f5bfb845ef8cbfde1bfbe0e71c33bc594b4a842948fca731b02a106e138eaec017505bab6b8a454303d71032
SSDEEP

24576:BpS04YNEMuExDiU6E5R9s8xY/2l/dmtnIbt+rP:BL4auS+UjfU2TmdIbt+r

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

147.185.221.24

Mutex

6dca1f42faa743d681c44618578d8050

Attributes

administration_rights_required
false
anti_debugger
false
anti_tcp_analyzer
false
antivm
false
autostart_method
1
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
12/17/2024 15:29:42
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
Orcus family
orcus

Executes dropped EXE 1 IoCs

pid	Process
2540	AudioDriver.exe

Loads dropped DLL 1 IoCs

pid	Process
1860	Sigma boy.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	Sigma boy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2540	AudioDriver.exe
2540	AudioDriver.exe
2540	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2540	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2540	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2540	AudioDriver.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2540	AudioDriver.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 2540	1860	Sigma boy.exe	29
PID 1860 wrote to memory of 2540	1860	Sigma boy.exe	29
PID 1860 wrote to memory of 2540	1860	Sigma boy.exe	29
PID 1860 wrote to memory of 2540	1860	Sigma boy.exe	29

C:\Users\Admin\AppData\Local\Temp\Sigma boy.exe
"C:\Users\Admin\AppData\Local\Temp\Sigma boy.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1860
- 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:2540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\Local\Temp\Cab83D.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

Filesize
839KB

MD5
5ff4807e24e3435c8e2d88be60086109

SHA1
3724453097aa75f412094aa9d72d53be07e99ef6

SHA256
227befcbc16bcd69e4f1b9b634492eba0c952e06b9ed94b199edce3804b84f51

SHA512
0f4a80c5e26b87bb5223d509111c9401ce763fd4f5bfb845ef8cbfde1bfbe0e71c33bc594b4a842948fca731b02a106e138eaec017505bab6b8a454303d71032

Download Submit
memory/1860-0-0x0000000074DE1000-0x0000000074DE2000-memory.dmp

Filesize
4KB

Download
memory/1860-1-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/1860-2-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/1860-11-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/2540-12-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/2540-13-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/2540-30-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/2540-31-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/2540-33-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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