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

Processes:

resource	yara_rule
C:\Program Files (x86)\Orcus\Orcus.exe	family_orcus
C:\Program Files (x86)\Orcus\Orcus.exe	family_orcus
C:\Program Files (x86)\Orcus\Orcus.exe	family_orcus

Orcurs Rat Executable 3 IoCs

Processes:

resource	yara_rule
C:\Program Files (x86)\Orcus\Orcus.exe	orcus
C:\Program Files (x86)\Orcus\Orcus.exe	orcus
C:\Program Files (x86)\Orcus\Orcus.exe	orcus

Executes dropped EXE 6 IoCs

Processes:

WindowsInput.exeWindowsInput.exeOrcus.exeOrcus.exeOrcusWatchdog.exeOrcusWatchdog.exe

pid process

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

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

Processes:

Orcus.exe

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

Processes:

3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exeWindowsInput.exe

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

Processes:

3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe

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

Processes:

Orcus.exeOrcusWatchdog.exe

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

Processes:

Orcus.exeOrcusWatchdog.exeOrcusWatchdog.exe

description pid process

Token: SeDebugPrivilege 3440 Orcus.exe
Token: SeDebugPrivilege 2848 OrcusWatchdog.exe
Token: SeDebugPrivilege 3940 OrcusWatchdog.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Orcus.exe

pid process

3440 Orcus.exe

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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exeOrcus.exeOrcusWatchdog.exe

description	pid	process	target process
PID 1852 wrote to memory of 4068	1852	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe	WindowsInput.exe
PID 1852 wrote to memory of 4068	1852	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe	WindowsInput.exe
PID 1852 wrote to memory of 3440	1852	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe	Orcus.exe
PID 1852 wrote to memory of 3440	1852	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe	Orcus.exe
PID 1852 wrote to memory of 3440	1852	3E40414D3D75B88373027C33BBE22E90A6EF7FDF7C98B.exe	Orcus.exe
PID 3440 wrote to memory of 2848	3440	Orcus.exe	OrcusWatchdog.exe
PID 3440 wrote to memory of 2848	3440	Orcus.exe	OrcusWatchdog.exe
PID 3440 wrote to memory of 2848	3440	Orcus.exe	OrcusWatchdog.exe
PID 2848 wrote to memory of 3940	2848	OrcusWatchdog.exe	OrcusWatchdog.exe
PID 2848 wrote to memory of 3940	2848	OrcusWatchdog.exe	OrcusWatchdog.exe
PID 2848 wrote to memory of 3940	2848	OrcusWatchdog.exe	OrcusWatchdog.exe

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 Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Orcus\Orcus.exe
MD5
1827c3deb2f17ab048cbfd62e3bbd861

SHA1
89f978070089ef8b477dfa653724150f2e7f7417

SHA256
3e40414d3d75b88373027c33bbe22e90a6ef7fdf7c98b8b6e8a8e51b4b781a56

SHA512
fef79fff23736f404b8a38895f1f729deae7341b9e8ad7266f5ed761250ab3afa1f8e8485086417367cb6a81179a2e80cca7e279f3082722f7f96b00ef0f0e2a

Download Submit
C:\Program Files (x86)\Orcus\Orcus.exe
MD5
1827c3deb2f17ab048cbfd62e3bbd861

SHA1
89f978070089ef8b477dfa653724150f2e7f7417

SHA256
3e40414d3d75b88373027c33bbe22e90a6ef7fdf7c98b8b6e8a8e51b4b781a56

SHA512
fef79fff23736f404b8a38895f1f729deae7341b9e8ad7266f5ed761250ab3afa1f8e8485086417367cb6a81179a2e80cca7e279f3082722f7f96b00ef0f0e2a

Download Submit
C:\Program Files (x86)\Orcus\Orcus.exe
MD5
1827c3deb2f17ab048cbfd62e3bbd861

SHA1
89f978070089ef8b477dfa653724150f2e7f7417

SHA256
3e40414d3d75b88373027c33bbe22e90a6ef7fdf7c98b8b6e8a8e51b4b781a56

SHA512
fef79fff23736f404b8a38895f1f729deae7341b9e8ad7266f5ed761250ab3afa1f8e8485086417367cb6a81179a2e80cca7e279f3082722f7f96b00ef0f0e2a

Download Submit
C:\Program Files (x86)\Orcus\Orcus.exe.config
MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\OrcusWatchdog.exe.log
MD5
605f809fab8c19729d39d075f7ffdb53

SHA1
c546f877c9bd53563174a90312a8337fdfc5fdd9

SHA256
6904d540649e76c55f99530b81be17e099184bb4cad415aa9b9b39cc3677f556

SHA512
82cc12c3186ae23884b8d5c104638c8206272c4389ade56b926dfc1d437b03888159b3c790b188b54d277a262e731927e703e680ea642e1417faee27443fd5b3

Download Submit
C:\Users\Admin\AppData\Local\Temp\OrcusWatchdog.exe
MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Users\Admin\AppData\Local\Temp\OrcusWatchdog.exe
MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Users\Admin\AppData\Local\Temp\OrcusWatchdog.exe
MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Users\Admin\AppData\Local\Temp\OrcusWatchdog.exe.config
MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe
MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe
MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe
MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe.config
MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
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/2848-168-0x0000000000000000-mapping.dmp

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/3440-141-0x0000000000000000-mapping.dmp

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/3940-174-0x0000000000000000-mapping.dmp

Download
memory/4068-124-0x0000000000000000-mapping.dmp

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