orcus | 3e40414d3d75b88373027c33bbe22e90a6ef7fdf7c98b8b6e8a8e51b4b781a56

Analysis

max time kernel
150s
max time network
149s
platform
windows10_x64
resource
win10v20210410
submitted
27-06-2021 21:02

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General

Target

3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe
Size

2.0MB
MD5

1827c3deb2f17ab048cbfd62e3bbd861
SHA1

89f978070089ef8b477dfa653724150f2e7f7417
SHA256

3e40414d3d75b88373027c33bbe22e90a6ef7fdf7c98b8b6e8a8e51b4b781a56
SHA512

fef79fff23736f404b8a38895f1f729deae7341b9e8ad7266f5ed761250ab3afa1f8e8485086417367cb6a81179a2e80cca7e279f3082722f7f96b00ef0f0e2a

Score

10^/10

orcus persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

3.143.239.116:10134

Mutex

e39a4bc6c5f84fd588c4a3159c804f42

Attributes

autostart_method
Registry
enable_keylogger
true
install_path
%programfiles%\Orcus\Orcus.exe
reconnect_delay
10000
registry_keyname
Chrome
taskscheduler_taskname
Orcus
watchdog_path
Temp\OrcusWatchdog.exe

Signatures

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

Orcus Main Payload 3 IoCs

resource	yara_rule
behavioral2/files/0x000100000001ab83-142.dat	family_orcus
behavioral2/files/0x000100000001ab83-144.dat	family_orcus
behavioral2/files/0x000100000001ab83-155.dat	family_orcus

Orcurs Rat Executable 3 IoCs

resource	yara_rule
behavioral2/files/0x000100000001ab83-142.dat	orcus
behavioral2/files/0x000100000001ab83-144.dat	orcus
behavioral2/files/0x000100000001ab83-155.dat	orcus

Executes dropped EXE 6 IoCs

pid	Process
4068	WindowsInput.exe
3816	WindowsInput.exe
3440	Orcus.exe
2200	Orcus.exe
2848	OrcusWatchdog.exe
3940	OrcusWatchdog.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\Chrome = "\"C:\\Program Files (x86)\\Orcus\\Orcus.exe\""	Orcus.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Orcus\Orcus.exe	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe
File opened for modification	C:\Program Files (x86)\Orcus\Orcus.exe	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe
File created	C:\Program Files (x86)\Orcus\Orcus.exe.config	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3440	Orcus.exe
3440	Orcus.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3940	OrcusWatchdog.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe
3440	Orcus.exe
3940	OrcusWatchdog.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3440	Orcus.exe
Token: SeDebugPrivilege	2848	OrcusWatchdog.exe
Token: SeDebugPrivilege	3940	OrcusWatchdog.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3440	Orcus.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 4068	1852	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe	76
PID 1852 wrote to memory of 4068	1852	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe	76
PID 1852 wrote to memory of 3440	1852	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe	78
PID 1852 wrote to memory of 3440	1852	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe	78
PID 1852 wrote to memory of 3440	1852	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe	78
PID 3440 wrote to memory of 2848	3440	Orcus.exe	80
PID 3440 wrote to memory of 2848	3440	Orcus.exe	80
PID 3440 wrote to memory of 2848	3440	Orcus.exe	80
PID 2848 wrote to memory of 3940	2848	OrcusWatchdog.exe	81
PID 2848 wrote to memory of 3940	2848	OrcusWatchdog.exe	81
PID 2848 wrote to memory of 3940	2848	OrcusWatchdog.exe	81

C:\Users\Admin\AppData\Local\Temp\3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe
"C:\Users\Admin\AppData\Local\Temp\3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe"
1⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:4068
- C:\Program Files (x86)\Orcus\Orcus.exe
  "C:\Program Files (x86)\Orcus\Orcus.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3440
- - C:\Users\Admin\AppData\Local\Temp\OrcusWatchdog.exe
    "C:\Users\Admin\AppData\Local\Temp\OrcusWatchdog.exe" /launchSelfAndExit "C:\Program Files (x86)\Orcus\Orcus.exe" 3440 /protectFile
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2848
  - - C:\Users\Admin\AppData\Local\Temp\OrcusWatchdog.exe
      "C:\Users\Admin\AppData\Local\Temp\OrcusWatchdog.exe" /watchProcess "C:\Program Files (x86)\Orcus\Orcus.exe" 3440 "/protectFile"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3940

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:3816

C:\Program Files (x86)\Orcus\Orcus.exe
"C:\Program Files (x86)\Orcus\Orcus.exe"
1⤵
- Executes dropped EXE
PID:2200

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1852-114-0x0000000000B80000-0x0000000000B81000-memory.dmp

Filesize
4KB

Download
memory/1852-116-0x0000000005720000-0x0000000005721000-memory.dmp

Filesize
4KB

Download
memory/1852-123-0x0000000005B30000-0x0000000005B31000-memory.dmp

Filesize
4KB

Download
memory/1852-122-0x00000000055F0000-0x00000000055F2000-memory.dmp

Filesize
8KB

Download
memory/1852-117-0x0000000001490000-0x000000000149C000-memory.dmp

Filesize
48KB

Download
memory/1852-120-0x0000000005610000-0x0000000005611000-memory.dmp

Filesize
4KB

Download
memory/1852-119-0x0000000005C30000-0x0000000005C31000-memory.dmp

Filesize
4KB

Download
memory/1852-118-0x0000000005460000-0x00000000054BA000-memory.dmp

Filesize
360KB

Download
memory/1852-121-0x0000000005550000-0x0000000005560000-memory.dmp

Filesize
64KB

Download
memory/2200-166-0x0000000004950000-0x0000000004951000-memory.dmp

Filesize
4KB

Download
memory/2848-172-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/3440-156-0x0000000005800000-0x0000000005815000-memory.dmp

Filesize
84KB

Download
memory/3440-180-0x0000000006EE0000-0x0000000006EE1000-memory.dmp

Filesize
4KB

Download
memory/3440-163-0x0000000005BA0000-0x0000000005BA1000-memory.dmp

Filesize
4KB

Download
memory/3440-164-0x00000000059D0000-0x00000000059DC000-memory.dmp

Filesize
48KB

Download
memory/3440-165-0x0000000004C00000-0x0000000004C01000-memory.dmp

Filesize
4KB

Download
memory/3440-167-0x0000000005AD0000-0x0000000005AD1000-memory.dmp

Filesize
4KB

Download
memory/3440-185-0x0000000007160000-0x0000000007161000-memory.dmp

Filesize
4KB

Download
memory/3440-184-0x0000000006FF0000-0x0000000006FF1000-memory.dmp

Filesize
4KB

Download
memory/3440-183-0x0000000006FB0000-0x0000000006FB1000-memory.dmp

Filesize
4KB

Download
memory/3440-182-0x0000000006F50000-0x0000000006F51000-memory.dmp

Filesize
4KB

Download
memory/3440-181-0x0000000007560000-0x0000000007561000-memory.dmp

Filesize
4KB

Download
memory/3440-153-0x0000000005660000-0x00000000056A8000-memory.dmp

Filesize
288KB

Download
memory/3440-179-0x0000000004C03000-0x0000000004C05000-memory.dmp

Filesize
8KB

Download
memory/3816-139-0x000000001A320000-0x000000001A321000-memory.dmp

Filesize
4KB

Download
memory/3816-140-0x0000000019F00000-0x0000000019F02000-memory.dmp

Filesize
8KB

Download
memory/4068-128-0x0000000000C30000-0x0000000000C31000-memory.dmp

Filesize
4KB

Download
memory/4068-131-0x000000001B890000-0x000000001B892000-memory.dmp

Filesize
8KB

Download
memory/4068-132-0x0000000001280000-0x0000000001281000-memory.dmp

Filesize
4KB

Download
memory/4068-133-0x00000000012E0000-0x00000000012E1000-memory.dmp

Filesize
4KB

Download