orcus | 927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 01:02

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General

Target

927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165.exe
Size

913KB
MD5

0f1c7991b1c30ed0626cf60660edc373
SHA1

e8b918d39ead158f83d95bcd676611d2a9a88aa2
SHA256

927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165
SHA512

275eb9b90f17b6cafd8b81787881cfc2740e946996b64b483c3a18416471bf3d49b40781bbf86f2161e5525089cf38456975c65e0c756c3df37886bb6105453c
SSDEEP

24576:KqSM4MROxnFl33zTrrcI0AilFEvxHPLWoo5:fAMirXrrcI0AilFEvxHPL

Score

10^/10

orcus system discovery persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

System

199.195.253.181:25202

Mutex

ecca0f439cec4158b200af951642a93a

Attributes

autostart_method
Registry
enable_keylogger
true
install_path
%appdata%\Microsoft\speech\voices\COM Surrogate.exe
reconnect_delay
10000
registry_keyname
COM_key
taskscheduler_taskname
COM start
watchdog_path
AppData\COM Surrogate.exe

Signatures

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

Orcus main payload 1 IoCs

resource	yara_rule
behavioral1/files/0x00070000000186ed-12.dat	family_orcus

Orcurs Rat Executable 3 IoCs

resource	yara_rule
behavioral1/memory/2124-1-0x00000000009B0000-0x0000000000A9A000-memory.dmp	orcus
behavioral1/files/0x00070000000186ed-12.dat	orcus
behavioral1/memory/2312-18-0x0000000000EF0000-0x0000000000FDA000-memory.dmp	orcus

Executes dropped EXE 4 IoCs

pid	Process
2312	COM Surrogate.exe
3056	COM Surrogate.exe
2696	COM Surrogate.exe
3028	COM Surrogate.exe

Loads dropped DLL 2 IoCs

pid	Process
2124	927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165.exe
2312	COM Surrogate.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\COM_key = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\speech\\voices\\COM Surrogate.exe\""	COM Surrogate.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	927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	COM Surrogate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	COM Surrogate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	COM Surrogate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	COM Surrogate.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2312	COM Surrogate.exe
2312	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
3028	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe
3028	COM Surrogate.exe
2312	COM Surrogate.exe
2312	COM Surrogate.exe
3028	COM Surrogate.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2312	COM Surrogate.exe
Token: SeDebugPrivilege	2696	COM Surrogate.exe
Token: SeDebugPrivilege	3028	COM Surrogate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2312	COM Surrogate.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2312	2124	927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165.exe	30
PID 2124 wrote to memory of 2312	2124	927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165.exe	30
PID 2124 wrote to memory of 2312	2124	927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165.exe	30
PID 2124 wrote to memory of 2312	2124	927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165.exe	30
PID 536 wrote to memory of 3056	536	taskeng.exe	32
PID 536 wrote to memory of 3056	536	taskeng.exe	32
PID 536 wrote to memory of 3056	536	taskeng.exe	32
PID 536 wrote to memory of 3056	536	taskeng.exe	32
PID 2312 wrote to memory of 2696	2312	COM Surrogate.exe	33
PID 2312 wrote to memory of 2696	2312	COM Surrogate.exe	33
PID 2312 wrote to memory of 2696	2312	COM Surrogate.exe	33
PID 2312 wrote to memory of 2696	2312	COM Surrogate.exe	33
PID 2696 wrote to memory of 3028	2696	COM Surrogate.exe	34
PID 2696 wrote to memory of 3028	2696	COM Surrogate.exe	34
PID 2696 wrote to memory of 3028	2696	COM Surrogate.exe	34
PID 2696 wrote to memory of 3028	2696	COM Surrogate.exe	34

C:\Users\Admin\AppData\Local\Temp\927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165.exe
"C:\Users\Admin\AppData\Local\Temp\927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Users\Admin\AppData\Roaming\Microsoft\speech\voices\COM Surrogate.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\speech\voices\COM Surrogate.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - 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:2312
- - C:\Users\Admin\AppData\Roaming\COM Surrogate.exe
    "C:\Users\Admin\AppData\Roaming\COM Surrogate.exe" /launchSelfAndExit "C:\Users\Admin\AppData\Roaming\Microsoft\speech\voices\COM Surrogate.exe" 2312 /protectFile
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2696
  - - C:\Users\Admin\AppData\Roaming\COM Surrogate.exe
      "C:\Users\Admin\AppData\Roaming\COM Surrogate.exe" /watchProcess "C:\Users\Admin\AppData\Roaming\Microsoft\speech\voices\COM Surrogate.exe" 2312 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3028

C:\Windows\system32\taskeng.exe
taskeng.exe {80843800-27E5-4364-B32E-F11B0110ABDD} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:536
- C:\Users\Admin\AppData\Roaming\Microsoft\speech\voices\COM Surrogate.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\speech\voices\COM Surrogate.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3056

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:\Users\Admin\AppData\Roaming\Microsoft\speech\voices\COM Surrogate.exe

Filesize
913KB

MD5
0f1c7991b1c30ed0626cf60660edc373

SHA1
e8b918d39ead158f83d95bcd676611d2a9a88aa2

SHA256
927f3d315f024beb4cd71ec36a465b75f39a21027b69140777e4d96a70556165

SHA512
275eb9b90f17b6cafd8b81787881cfc2740e946996b64b483c3a18416471bf3d49b40781bbf86f2161e5525089cf38456975c65e0c756c3df37886bb6105453c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\speech\voices\COM Surrogate.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
\Users\Admin\AppData\Roaming\COM Surrogate.exe

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
memory/2124-17-0x0000000074D20000-0x000000007540E000-memory.dmp

Filesize
6.9MB

Download
memory/2124-1-0x00000000009B0000-0x0000000000A9A000-memory.dmp

Filesize
936KB

Download
memory/2124-2-0x00000000004A0000-0x00000000004AE000-memory.dmp

Filesize
56KB

Download
memory/2124-4-0x00000000042A0000-0x00000000042FC000-memory.dmp

Filesize
368KB

Download
memory/2124-3-0x0000000074D20000-0x000000007540E000-memory.dmp

Filesize
6.9MB

Download
memory/2124-5-0x0000000000570000-0x0000000000582000-memory.dmp

Filesize
72KB

Download
memory/2124-0-0x0000000074D2E000-0x0000000074D2F000-memory.dmp

Filesize
4KB

Download
memory/2312-19-0x0000000074D20000-0x000000007540E000-memory.dmp

Filesize
6.9MB

Download
memory/2312-18-0x0000000000EF0000-0x0000000000FDA000-memory.dmp

Filesize
936KB

Download
memory/2312-21-0x0000000000770000-0x00000000007BE000-memory.dmp

Filesize
312KB

Download
memory/2312-22-0x0000000000EC0000-0x0000000000ED8000-memory.dmp

Filesize
96KB

Download
memory/2312-23-0x0000000000EE0000-0x0000000000EF0000-memory.dmp

Filesize
64KB

Download
memory/2312-20-0x0000000074D20000-0x000000007540E000-memory.dmp

Filesize
6.9MB

Download
memory/2312-36-0x0000000074D20000-0x000000007540E000-memory.dmp

Filesize
6.9MB

Download
memory/2696-34-0x00000000001D0000-0x00000000001D8000-memory.dmp

Filesize
32KB

Download