orcus | b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c

General

Target

b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe
Size

2.7MB
MD5

c6c4326c46b490c2ca2177c8bed83bbd
SHA1

9505b0b9728ad7c82653ba052756d5b5c4fca144
SHA256

b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c
SHA512

84dfa26b4fa2ef0e1ff6c184e92723fc7a47e568577203331761ce1e293cf3a8d7dad456c8c5d44accabe98fc3c5094da32d3cb600d67b1e76c45a6d2068b094
SSDEEP

24576:HAHnh+eWsN3skA4RV1Hom2KXMmHaf6dKYwjtOFK3EBgLrlNuErLo5i8144OTu6aw:6h+ZkldoPK8YaSX0

Score

10^/10

orcus w1nd3f discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

W1ND3F

C2

orcus.airdns.org:2172

Mutex

W1ND3F2238799525ef4ef7b3a20ac12f2d076b

Attributes

autostart_method
Registry
enable_keylogger
true
install_path
%appdata%\HD Audio Driver\Version\4.201\Devices\HD Audio Driver Update.exe
reconnect_delay
10000
registry_keyname
HD Audio Driver Update
taskscheduler_taskname
HD Audio Driver Updater
watchdog_path
AppData\HD Audio Driver Sync.exe

Signatures

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

Orcurs Rat Executable 3 IoCs

resource	yara_rule
behavioral1/memory/2908-9-0x0000000000400000-0x00000000004E8000-memory.dmp	orcus
behavioral1/memory/2908-8-0x0000000000400000-0x00000000004E8000-memory.dmp	orcus
behavioral1/memory/2908-2-0x0000000000400000-0x00000000004E8000-memory.dmp	orcus

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Defender Service.url	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 340 set thread context of 2908	340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe	31

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	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe
340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2908	RegSvcs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2908	RegSvcs.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 340 wrote to memory of 2908	340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe	31
PID 340 wrote to memory of 2908	340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe	31
PID 340 wrote to memory of 2908	340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe	31
PID 340 wrote to memory of 2908	340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe	31
PID 340 wrote to memory of 2908	340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe	31
PID 340 wrote to memory of 2908	340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe	31
PID 340 wrote to memory of 2908	340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe	31
PID 340 wrote to memory of 2908	340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe	31
PID 340 wrote to memory of 2908	340	b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe	31

C:\Users\Admin\AppData\Local\Temp\b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe
"C:\Users\Admin\AppData\Local\Temp\b0eaf4c70a1e5bd37df19efb5497d08a1fb13c4db970e8db3304174c362de97c.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:340
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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

memory/340-0-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/2908-9-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/2908-8-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/2908-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2908-2-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/2908-1-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/2908-10-0x000000007427E000-0x000000007427F000-memory.dmp

Filesize
4KB

Download
memory/2908-11-0x00000000003C0000-0x00000000003CE000-memory.dmp

Filesize
56KB

Download
memory/2908-12-0x00000000007E0000-0x000000000083C000-memory.dmp

Filesize
368KB

Download
memory/2908-13-0x0000000074270000-0x000000007495E000-memory.dmp

Filesize
6.9MB

Download
memory/2908-14-0x0000000000540000-0x0000000000552000-memory.dmp

Filesize
72KB

Download
memory/2908-15-0x0000000000700000-0x0000000000708000-memory.dmp

Filesize
32KB

Download
memory/2908-16-0x00000000008D0000-0x00000000008E8000-memory.dmp

Filesize
96KB

Download
memory/2908-17-0x0000000000900000-0x0000000000910000-memory.dmp

Filesize
64KB

Download
memory/2908-18-0x000000007427E000-0x000000007427F000-memory.dmp

Filesize
4KB

Download
memory/2908-19-0x0000000074270000-0x000000007495E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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