orcus | 511305e006736b331aa4fd7b6237b6ec49096eb5a6f1543676846d031af02b9a

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
01/09/2024, 15:40

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General

Target

winla.exe
Size

918KB
MD5

abbd2ba17bece747c5434dc4b71c15ed
SHA1

61872670bdb6cb3b0f2262be77ff1cb28636fc1d
SHA256

511305e006736b331aa4fd7b6237b6ec49096eb5a6f1543676846d031af02b9a
SHA512

4861d851b52a50a5db5a456de4d1709a028eb720cbe61c94ae04d0838f7121033aecd2594ff5b4c2253f439b57d9513f9f41e31877a3530a5e1133d2fe1e997e
SSDEEP

24576:md74MROxnFH3WRM48rrcI0AilFEvxHPWaooQ:maMihWl8rrcI0AilFEvxHPW

Score

10^/10

orcus mal discovery persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

Mal

comes-drew.gl.at.ply.gg:22718

Mutex

3bd064b7c6b7453ba4e355a8c39c2b4a

Attributes

autostart_method
Registry
enable_keylogger
true
install_path
%programfiles%\Radeon\RadeonSoftware.exe
reconnect_delay
10000
registry_keyname
winla
taskscheduler_taskname
winlaa
watchdog_path
Temp\AMDRSServ.exe

Signatures

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

Orcus main payload 1 IoCs

resource	yara_rule
behavioral4/files/0x000200000002a185-40.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral4/memory/800-1-0x00000000004A0000-0x000000000058C000-memory.dmp	orcus
behavioral4/files/0x000200000002a185-40.dat	orcus

Executes dropped EXE 6 IoCs

pid	Process
2480	WindowsInput.exe
1152	WindowsInput.exe
2128	RadeonSoftware.exe
2284	RadeonSoftware.exe
3260	AMDRSServ.exe
3240	AMDRSServ.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Windows\CurrentVersion\Run\winla = "\"C:\\Program Files (x86)\\Radeon\\RadeonSoftware.exe\""	RadeonSoftware.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	winla.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	winla.exe
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Radeon\RadeonSoftware.exe	winla.exe
File created	C:\Program Files (x86)\Radeon\RadeonSoftware.exe.config	winla.exe
File created	C:\Program Files (x86)\Radeon\RadeonSoftware.exe	winla.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 5 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	AMDRSServ.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AMDRSServ.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winla.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RadeonSoftware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RadeonSoftware.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2128	RadeonSoftware.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
3240	AMDRSServ.exe
3240	AMDRSServ.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe
2128	RadeonSoftware.exe
3240	AMDRSServ.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	RadeonSoftware.exe
Token: SeDebugPrivilege	3260	AMDRSServ.exe
Token: SeDebugPrivilege	3240	AMDRSServ.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2128	RadeonSoftware.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 800 wrote to memory of 2480	800	winla.exe	82
PID 800 wrote to memory of 2480	800	winla.exe	82
PID 800 wrote to memory of 2128	800	winla.exe	84
PID 800 wrote to memory of 2128	800	winla.exe	84
PID 800 wrote to memory of 2128	800	winla.exe	84
PID 2128 wrote to memory of 3260	2128	RadeonSoftware.exe	86
PID 2128 wrote to memory of 3260	2128	RadeonSoftware.exe	86
PID 2128 wrote to memory of 3260	2128	RadeonSoftware.exe	86
PID 3260 wrote to memory of 3240	3260	AMDRSServ.exe	87
PID 3260 wrote to memory of 3240	3260	AMDRSServ.exe	87
PID 3260 wrote to memory of 3240	3260	AMDRSServ.exe	87

C:\Users\Admin\AppData\Local\Temp\winla.exe
"C:\Users\Admin\AppData\Local\Temp\winla.exe"
1⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:800
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:2480
- C:\Program Files (x86)\Radeon\RadeonSoftware.exe
  "C:\Program Files (x86)\Radeon\RadeonSoftware.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2128
- - C:\Users\Admin\AppData\Local\Temp\AMDRSServ.exe
    "C:\Users\Admin\AppData\Local\Temp\AMDRSServ.exe" /launchSelfAndExit "C:\Program Files (x86)\Radeon\RadeonSoftware.exe" 2128 /protectFile
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3260
  - - C:\Users\Admin\AppData\Local\Temp\AMDRSServ.exe
      "C:\Users\Admin\AppData\Local\Temp\AMDRSServ.exe" /watchProcess "C:\Program Files (x86)\Radeon\RadeonSoftware.exe" 2128 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3240

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:1152

C:\Program Files (x86)\Radeon\RadeonSoftware.exe
"C:\Program Files (x86)\Radeon\RadeonSoftware.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2284

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\Radeon\RadeonSoftware.exe

Filesize
918KB

MD5
abbd2ba17bece747c5434dc4b71c15ed

SHA1
61872670bdb6cb3b0f2262be77ff1cb28636fc1d

SHA256
511305e006736b331aa4fd7b6237b6ec49096eb5a6f1543676846d031af02b9a

SHA512
4861d851b52a50a5db5a456de4d1709a028eb720cbe61c94ae04d0838f7121033aecd2594ff5b4c2253f439b57d9513f9f41e31877a3530a5e1133d2fe1e997e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\AMDRSServ.exe.log

Filesize
425B

MD5
bb27934be8860266d478c13f2d65f45e

SHA1
a69a0e171864dcac9ade1b04fc0313e6b4024ccb

SHA256
85ad0d9909461517acf2e24ff116ca350e9b7000b4eefb23aa3647423c9745b4

SHA512
87dd77feac509a25b30c76c119752cc25020cca9c53276c2082aef2a8c75670ef67e1e70024a63d44ae442b64f4bc464aee6691e80c525376bb7421929cfa3bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\AMDRSServ.exe

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe

Filesize
21KB

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/800-51-0x0000000074870000-0x0000000075021000-memory.dmp

Filesize
7.7MB

Download
memory/800-6-0x0000000005020000-0x00000000050B2000-memory.dmp

Filesize
584KB

Download
memory/800-7-0x0000000005000000-0x0000000005012000-memory.dmp

Filesize
72KB

Download
memory/800-8-0x0000000005010000-0x0000000005018000-memory.dmp

Filesize
32KB

Download
memory/800-9-0x0000000005480000-0x00000000054A2000-memory.dmp

Filesize
136KB

Download
memory/800-5-0x00000000054E0000-0x0000000005A86000-memory.dmp

Filesize
5.6MB

Download
memory/800-4-0x0000000004ED0000-0x0000000004F2C000-memory.dmp

Filesize
368KB

Download
memory/800-3-0x0000000074870000-0x0000000075021000-memory.dmp

Filesize
7.7MB

Download
memory/800-1-0x00000000004A0000-0x000000000058C000-memory.dmp

Filesize
944KB

Download
memory/800-2-0x00000000029A0000-0x00000000029AE000-memory.dmp

Filesize
56KB

Download
memory/800-0-0x000000007487E000-0x000000007487F000-memory.dmp

Filesize
4KB

Download
memory/1152-34-0x000000001A0F0000-0x000000001A1FA000-memory.dmp

Filesize
1.0MB

Download
memory/1152-76-0x00007FFF98BB0000-0x00007FFF99672000-memory.dmp

Filesize
10.8MB

Download
memory/1152-33-0x00007FFF98BB0000-0x00007FFF99672000-memory.dmp

Filesize
10.8MB

Download
memory/2128-56-0x0000000005E00000-0x0000000005E10000-memory.dmp

Filesize
64KB

Download
memory/2128-52-0x0000000005500000-0x000000000554E000-memory.dmp

Filesize
312KB

Download
memory/2128-54-0x00000000055C0000-0x00000000055D8000-memory.dmp

Filesize
96KB

Download
memory/2128-55-0x0000000006160000-0x0000000006322000-memory.dmp

Filesize
1.8MB

Download
memory/2128-57-0x00000000064B0000-0x00000000064BA000-memory.dmp

Filesize
40KB

Download
memory/2480-31-0x00007FFF98BB0000-0x00007FFF99672000-memory.dmp

Filesize
10.8MB

Download
memory/2480-28-0x00007FFF98BB0000-0x00007FFF99672000-memory.dmp

Filesize
10.8MB

Download
memory/2480-26-0x0000000002900000-0x000000000293C000-memory.dmp

Filesize
240KB

Download
memory/2480-25-0x0000000002770000-0x0000000002782000-memory.dmp

Filesize
72KB

Download
memory/2480-24-0x0000000000570000-0x000000000057C000-memory.dmp

Filesize
48KB

Download
memory/2480-23-0x00007FFF98BB3000-0x00007FFF98BB5000-memory.dmp

Filesize
8KB

Download
memory/3260-71-0x00000000003F0000-0x00000000003F8000-memory.dmp

Filesize
32KB

Download