orcus | 1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791

General

Target

1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe
Size

3.1MB
MD5

e9bf15e3bb0040201e71a08b6148c4c8
SHA1

77f60f9328596ada8d2b7fd0fd03914004726f59
SHA256

1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791
SHA512

cbd2fc46d6df126434e8dd25503122ee172a99a37efefec129da9d7c9bdfc5f705a19e218e746a54d08ad28196a9ec471030039fcb88ca09392af66b42ee5d1f
SSDEEP

49152:kUqN8QFUwqYZeM9/ZzzBjMkPUayX82+YXAypQxb9ndo9JnCmYZncFf0I74gu3eM:kt0wGGzBjryX82uypSb9ndo9JCm

Score

10^/10

orcus persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

192.168.50.155:10134

Mutex

df25dda70009431f9a1c62b7dc35a8ee

Attributes

autostart_method
Registry
enable_keylogger
true
install_path
%programfiles%\ssystem\ssystem.exe
reconnect_delay
10000
registry_keyname
ssystem
taskscheduler_taskname
ssystem
watchdog_path
AppData\OrcusWatchdog.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 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4172-1-0x00000161F6630000-0x00000161F6944000-memory.dmp	orcus
C:\Program Files\ssystem\ssystem.exe	orcus

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe

Executes dropped EXE 4 IoCs

Processes:

WindowsInput.exeWindowsInput.exessystem.exessystem.exe

pid process

2196 WindowsInput.exe
3924 WindowsInput.exe
4896 ssystem.exe
1724 ssystem.exe

pid	process
2196	WindowsInput.exe
3924	WindowsInput.exe
4896	ssystem.exe
1724	ssystem.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

ssystem.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ssystem = "\"C:\\Program Files\\ssystem\\ssystem.exe\""	ssystem.exe

Drops file in System32 directory 3 IoCs

Processes:

1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exeWindowsInput.exe

description	ioc	process
File created	C:\Windows\SysWOW64\WindowsInput.exe	1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe

Drops file in Program Files directory 3 IoCs

Processes:

1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe

description	ioc	process
File created	C:\Program Files\ssystem\ssystem.exe	1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe
File opened for modification	C:\Program Files\ssystem\ssystem.exe	1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe
File created	C:\Program Files\ssystem\ssystem.exe.config	1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe

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

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

ssystem.exe

description pid process

Token: SeDebugPrivilege 4896 ssystem.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ssystem.exe

pid process

4896 ssystem.exe

description	pid	process
Token: SeDebugPrivilege	4896	ssystem.exe

pid	process
4896	ssystem.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe

description	pid	process	target process
PID 4172 wrote to memory of 2196	4172	1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe	WindowsInput.exe
PID 4172 wrote to memory of 2196	4172	1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe	WindowsInput.exe
PID 4172 wrote to memory of 4896	4172	1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe	ssystem.exe
PID 4172 wrote to memory of 4896	4172	1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe	ssystem.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe
"C:\Users\Admin\AppData\Local\Temp\1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4172
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:2196
- C:\Program Files\ssystem\ssystem.exe
  "C:\Program Files\ssystem\ssystem.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4896

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:3924

C:\Program Files\ssystem\ssystem.exe
"C:\Program Files\ssystem\ssystem.exe"
1⤵
- Executes dropped EXE
PID:1724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\ssystem\ssystem.exe

Filesize
3.1MB

MD5
e9bf15e3bb0040201e71a08b6148c4c8

SHA1
77f60f9328596ada8d2b7fd0fd03914004726f59

SHA256
1e53ce1e620a5ae7be3186252e8c5a1e9c81d5b4c862321102c8036c0d942791

SHA512
cbd2fc46d6df126434e8dd25503122ee172a99a37efefec129da9d7c9bdfc5f705a19e218e746a54d08ad28196a9ec471030039fcb88ca09392af66b42ee5d1f

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

Filesize
21KB

MD5
a80be96476032d2eaa901d180fe9fb73

SHA1
f378d0bc5fefb9ea0b5006f020091ffcbcd7acec

SHA256
d6075c1ed6f285f5de01ce0cc6a817b59054da8b19f20bc7081cfe7fb2b1af42

SHA512
210c0c4c845b416a601015fba5ccd2a3e8a4b81d3b4c5e0491b07bd0dcad938d9b118728bb1abc21eb73c5f9263a3c08e1822ece91002a2d1f0983857f0192ea

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

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/2196-30-0x00007FF974D60000-0x00007FF975821000-memory.dmp

Filesize
10.8MB

Download
memory/2196-29-0x00007FF974D60000-0x00007FF975821000-memory.dmp

Filesize
10.8MB

Download
memory/2196-24-0x0000017D996F0000-0x0000017D99702000-memory.dmp

Filesize
72KB

Download
memory/2196-25-0x0000017D9B080000-0x0000017D9B0BC000-memory.dmp

Filesize
240KB

Download
memory/2196-23-0x00007FF974D60000-0x00007FF975821000-memory.dmp

Filesize
10.8MB

Download
memory/2196-22-0x0000017D99310000-0x0000017D9931C000-memory.dmp

Filesize
48KB

Download
memory/3924-32-0x0000024B76A90000-0x0000024B76B9A000-memory.dmp

Filesize
1.0MB

Download
memory/4172-1-0x00000161F6630000-0x00000161F6944000-memory.dmp

Filesize
3.1MB

Download
memory/4172-5-0x00000161F6D50000-0x00000161F6D62000-memory.dmp

Filesize
72KB

Download
memory/4172-4-0x00007FF974D60000-0x00007FF975821000-memory.dmp

Filesize
10.8MB

Download
memory/4172-3-0x00000161F6D00000-0x00000161F6D0E000-memory.dmp

Filesize
56KB

Download
memory/4172-2-0x00000161F8CE0000-0x00000161F8D3C000-memory.dmp

Filesize
368KB

Download
memory/4172-0-0x00007FF974D63000-0x00007FF974D65000-memory.dmp

Filesize
8KB

Download
memory/4172-6-0x00000161F6D40000-0x00000161F6D48000-memory.dmp

Filesize
32KB

Download
memory/4172-48-0x00007FF974D60000-0x00007FF975821000-memory.dmp

Filesize
10.8MB

Download
memory/4896-49-0x000001B3F13A0000-0x000001B3F13B2000-memory.dmp

Filesize
72KB

Download
memory/4896-50-0x000001B3F1CE0000-0x000001B3F1D38000-memory.dmp

Filesize
352KB

Download
memory/4896-52-0x000001B3F20B0000-0x000001B3F20C8000-memory.dmp

Filesize
96KB

Download
memory/4896-53-0x000001B3F2310000-0x000001B3F24D2000-memory.dmp

Filesize
1.8MB

Download
memory/4896-54-0x000001B3F20E0000-0x000001B3F20F0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads