orcus | a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908

General

Target

a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe
Size

840KB
MD5

0ff88f2d12dcbab52e70519e4f7c4fdc
SHA1

8382f9791b597fda7c565a8d82337d904bd5572d
SHA256

a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908
SHA512

b09f1cc3a90dcae3bd4eefdc4c45433387a5729e38e460d66c66acaab0eaf49b7f5f1f1bfa425d998c5de5dab05f8393d6d990b9f592dc15f012e019dc5075e4
SSDEEP

24576:7w2S04YNEMuExDiU6E5R9s8xY/2l/daN1Ibt+rl:7wS4auS+UjfU2TW1Ibt+r

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

192.168.1.42

Mutex

e2b1b298c933441cb49c65cefdc44a98

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
01/25/2025 15:59:31
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

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe

Executes dropped EXE 1 IoCs

pid	Process
1188	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	a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe
1188	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1188	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3760 wrote to memory of 1188	3760	a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe	84
PID 3760 wrote to memory of 1188	3760	a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe	84
PID 3760 wrote to memory of 1188	3760	a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe	84

C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe
"C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3760
- 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
  PID:1188

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
0ff88f2d12dcbab52e70519e4f7c4fdc

SHA1
8382f9791b597fda7c565a8d82337d904bd5572d

SHA256
a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908

SHA512
b09f1cc3a90dcae3bd4eefdc4c45433387a5729e38e460d66c66acaab0eaf49b7f5f1f1bfa425d998c5de5dab05f8393d6d990b9f592dc15f012e019dc5075e4

Download Submit
memory/1188-24-0x0000000005CB0000-0x0000000005CC0000-memory.dmp

Filesize
64KB

Download
memory/1188-23-0x0000000006330000-0x00000000064F2000-memory.dmp

Filesize
1.8MB

Download
memory/1188-27-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/1188-25-0x0000000006740000-0x000000000674A000-memory.dmp

Filesize
40KB

Download
memory/1188-22-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/1188-21-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/3760-3-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/3760-5-0x00000000056C0000-0x0000000005752000-memory.dmp

Filesize
584KB

Download
memory/3760-9-0x0000000005770000-0x00000000057BE000-memory.dmp

Filesize
312KB

Download
memory/3760-6-0x0000000005630000-0x000000000567C000-memory.dmp

Filesize
304KB

Download
memory/3760-1-0x0000000000780000-0x0000000000858000-memory.dmp

Filesize
864KB

Download
memory/3760-0-0x0000000074DAE000-0x0000000074DAF000-memory.dmp

Filesize
4KB

Download
memory/3760-4-0x0000000005870000-0x0000000005E14000-memory.dmp

Filesize
5.6MB

Download
memory/3760-26-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/3760-2-0x00000000051C0000-0x00000000051CA000-memory.dmp

Filesize
40KB

Download

Analysis

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