orcus | ce241023e11491d0faae22ad7fda8db3a8ae6d70b9421234e7ff371d1e42c410

General

Target

esg.exe
Size

839KB
MD5

1ef3aeb3921f543f6b951d32a8f992e4
SHA1

5c3172bb2490ecc3e572cd5b5fee8e6fc3758bf9
SHA256

ce241023e11491d0faae22ad7fda8db3a8ae6d70b9421234e7ff371d1e42c410
SHA512

60c65eefe018d3171309c8ba13e2d4ced013f4bbfe456db3095d662136c6e05fa28e5601493dd4a23f4ef82c4ebc87cad248bead43a8f43b7ae4adaf535638b5
SSDEEP

24576:VjSS04YNEMuExDiU6E5R9s8xY/2l/dIIbt+rU:VjO4auS+UjfU2TIIbt+r

Score

10^/10

orcus aefgag discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

aefgag

C2

87.177.68.221

127.0.0.1

Mutex

b5955cf7135e45a0a859f80a5a6c9e47

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
11/28/2024 20:55:38
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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	esg.exe

Executes dropped EXE 1 IoCs

pid	Process
3660	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	esg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe
3660	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3660	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3660	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3660	AudioDriver.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3660	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4320 wrote to memory of 3660	4320	esg.exe	84
PID 4320 wrote to memory of 3660	4320	esg.exe	84
PID 4320 wrote to memory of 3660	4320	esg.exe	84

C:\Users\Admin\AppData\Local\Temp\esg.exe
"C:\Users\Admin\AppData\Local\Temp\esg.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4320
- 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:3660

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
839KB

MD5
1ef3aeb3921f543f6b951d32a8f992e4

SHA1
5c3172bb2490ecc3e572cd5b5fee8e6fc3758bf9

SHA256
ce241023e11491d0faae22ad7fda8db3a8ae6d70b9421234e7ff371d1e42c410

SHA512
60c65eefe018d3171309c8ba13e2d4ced013f4bbfe456db3095d662136c6e05fa28e5601493dd4a23f4ef82c4ebc87cad248bead43a8f43b7ae4adaf535638b5

Download Submit
memory/3660-28-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/3660-27-0x00000000067E0000-0x00000000067EA000-memory.dmp

Filesize
40KB

Download
memory/3660-25-0x0000000006160000-0x0000000006322000-memory.dmp

Filesize
1.8MB

Download
memory/3660-26-0x00000000057B0000-0x00000000057C0000-memory.dmp

Filesize
64KB

Download
memory/3660-24-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/3660-22-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4320-4-0x0000000005A70000-0x0000000006014000-memory.dmp

Filesize
5.6MB

Download
memory/4320-10-0x0000000006230000-0x000000000627E000-memory.dmp

Filesize
312KB

Download
memory/4320-7-0x00000000058B0000-0x0000000005916000-memory.dmp

Filesize
408KB

Download
memory/4320-23-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4320-6-0x0000000005700000-0x000000000574C000-memory.dmp

Filesize
304KB

Download
memory/4320-5-0x00000000057A0000-0x0000000005832000-memory.dmp

Filesize
584KB

Download
memory/4320-0-0x0000000074F1E000-0x0000000074F1F000-memory.dmp

Filesize
4KB

Download
memory/4320-3-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4320-2-0x0000000005280000-0x000000000528A000-memory.dmp

Filesize
40KB

Download
memory/4320-1-0x0000000000850000-0x0000000000928000-memory.dmp

Filesize
864KB

Download

Analysis

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