orcus | e7e7d51e82941b9eb56f82854e9682dc7a8593185ce6216082d5f795ceace582

General

Target

52EE41A4329C6874DF19851AC928C8E8.exe
Size

899KB
MD5

52ee41a4329c6874df19851ac928c8e8
SHA1

ba47b57ff5b0c6d02ea5a1b80e96cee5387b03de
SHA256

e7e7d51e82941b9eb56f82854e9682dc7a8593185ce6216082d5f795ceace582
SHA512

6f640819de2f407337578e047df76aadc23f2062c0a798a47a05bd6407b924f286f71cb4ef1c00b568223ac8e5c05afa39261cdcf86e8e913ff0e23096c201ac

Score

10^/10

orcus rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

orcustop4ik.duckdns.org:6666

Mutex

9280ed1ca561486e8b0282e7c4fcd77c

Attributes

autostart_method
TaskScheduler
enable_keylogger
true
install_path
%appdata%\Windows Defender\UnzipManager.exe
reconnect_delay
10000
registry_keyname
Unzipper
taskscheduler_taskname
Unzipper
watchdog_path
AppData\WindowsServer\svhost.exe

Signatures

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

Orcus Main Payload 5 IoCs

resource	yara_rule
behavioral2/files/0x000200000001ab0a-119.dat	family_orcus
behavioral2/files/0x000200000001ab0a-120.dat	family_orcus
behavioral2/files/0x000100000001ab13-148.dat	family_orcus
behavioral2/files/0x000100000001ab13-150.dat	family_orcus
behavioral2/files/0x000100000001ab13-161.dat	family_orcus

Orcurs Rat Executable 5 IoCs

resource	yara_rule
behavioral2/files/0x000200000001ab0a-119.dat	orcus
behavioral2/files/0x000200000001ab0a-120.dat	orcus
behavioral2/files/0x000100000001ab13-148.dat	orcus
behavioral2/files/0x000100000001ab13-150.dat	orcus
behavioral2/files/0x000100000001ab13-161.dat	orcus

Executes dropped EXE 5 IoCs

pid	Process
2792	WinRarUnzipper.exe
2132	WindowsInput.exe
1676	WindowsInput.exe
3644	UnzipManager.exe
1588	UnzipManager.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\International\Geo\Nation	52EE41A4329C6874DF19851AC928C8E8.exe

Drops file in System32 directory 3 IoCs

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

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	52EE41A4329C6874DF19851AC928C8E8.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3644	UnzipManager.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3644	UnzipManager.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3628 wrote to memory of 2792	3628	52EE41A4329C6874DF19851AC928C8E8.exe	75
PID 3628 wrote to memory of 2792	3628	52EE41A4329C6874DF19851AC928C8E8.exe	75
PID 3628 wrote to memory of 2792	3628	52EE41A4329C6874DF19851AC928C8E8.exe	75
PID 2792 wrote to memory of 2132	2792	WinRarUnzipper.exe	76
PID 2792 wrote to memory of 2132	2792	WinRarUnzipper.exe	76
PID 2792 wrote to memory of 3644	2792	WinRarUnzipper.exe	78
PID 2792 wrote to memory of 3644	2792	WinRarUnzipper.exe	78
PID 2792 wrote to memory of 3644	2792	WinRarUnzipper.exe	78

C:\Users\Admin\AppData\Local\Temp\52EE41A4329C6874DF19851AC928C8E8.exe
"C:\Users\Admin\AppData\Local\Temp\52EE41A4329C6874DF19851AC928C8E8.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3628
- C:\Users\Admin\Desktop\WinRarUnzipper.exe
  "C:\Users\Admin\Desktop\WinRarUnzipper.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Windows\SysWOW64\WindowsInput.exe
    "C:\Windows\SysWOW64\WindowsInput.exe" --install
    3⤵
    - Executes dropped EXE
    - Drops file in System32 directory
    PID:2132
- - C:\Users\Admin\AppData\Roaming\Windows Defender\UnzipManager.exe
    "C:\Users\Admin\AppData\Roaming\Windows Defender\UnzipManager.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3644

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:1676

C:\Users\Admin\AppData\Roaming\Windows Defender\UnzipManager.exe
"C:\Users\Admin\AppData\Roaming\Windows Defender\UnzipManager.exe"
1⤵
- Executes dropped EXE
PID:1588

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1588-174-0x0000000005420000-0x0000000005421000-memory.dmp

Filesize
4KB

Download
memory/1676-146-0x000000001A770000-0x000000001A771000-memory.dmp

Filesize
4KB

Download
memory/1676-145-0x0000000019AC0000-0x0000000019AC2000-memory.dmp

Filesize
8KB

Download
memory/2132-138-0x00000000013E0000-0x00000000013E1000-memory.dmp

Filesize
4KB

Download
memory/2132-137-0x0000000001380000-0x0000000001381000-memory.dmp

Filesize
4KB

Download
memory/2132-139-0x000000001B720000-0x000000001B722000-memory.dmp

Filesize
8KB

Download
memory/2132-134-0x0000000000B30000-0x0000000000B31000-memory.dmp

Filesize
4KB

Download
memory/2792-127-0x00000000053D0000-0x00000000053D1000-memory.dmp

Filesize
4KB

Download
memory/2792-121-0x0000000000800000-0x0000000000801000-memory.dmp

Filesize
4KB

Download
memory/2792-128-0x00000000057B0000-0x00000000057C0000-memory.dmp

Filesize
64KB

Download
memory/2792-129-0x0000000005DF0000-0x0000000005DF1000-memory.dmp

Filesize
4KB

Download
memory/2792-126-0x00000000057F0000-0x00000000057F1000-memory.dmp

Filesize
4KB

Download
memory/2792-125-0x0000000005230000-0x000000000528A000-memory.dmp

Filesize
360KB

Download
memory/2792-124-0x0000000001350000-0x000000000135C000-memory.dmp

Filesize
48KB

Download
memory/2792-123-0x00000000052C0000-0x00000000052C1000-memory.dmp

Filesize
4KB

Download
memory/3628-116-0x0000000002440000-0x0000000002506000-memory.dmp

Filesize
792KB

Download
memory/3628-117-0x000000001B050000-0x000000001B052000-memory.dmp

Filesize
8KB

Download
memory/3628-114-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/3644-166-0x0000000005F50000-0x0000000005F51000-memory.dmp

Filesize
4KB

Download
memory/3644-158-0x0000000005030000-0x0000000005078000-memory.dmp

Filesize
288KB

Download
memory/3644-162-0x0000000005730000-0x0000000005745000-memory.dmp

Filesize
84KB

Download
memory/3644-163-0x0000000004C20000-0x0000000004C21000-memory.dmp

Filesize
4KB

Download
memory/3644-164-0x0000000005AC0000-0x0000000005AC1000-memory.dmp

Filesize
4KB

Download
memory/3644-165-0x00000000058F0000-0x00000000058FC000-memory.dmp

Filesize
48KB

Download
memory/3644-159-0x00000000050C0000-0x00000000050C1000-memory.dmp

Filesize
4KB

Download
memory/3644-173-0x0000000004C23000-0x0000000004C25000-memory.dmp

Filesize
8KB

Download
memory/3644-175-0x0000000006220000-0x0000000006221000-memory.dmp

Filesize
4KB

Download
memory/3644-176-0x0000000006CC0000-0x0000000006CC1000-memory.dmp

Filesize
4KB

Download
memory/3644-177-0x00000000062F0000-0x00000000062F1000-memory.dmp

Filesize
4KB

Download
memory/3644-178-0x00000000066B0000-0x00000000066B1000-memory.dmp

Filesize
4KB

Download
memory/3644-179-0x0000000006310000-0x0000000006311000-memory.dmp

Filesize
4KB

Download
memory/3644-180-0x0000000006860000-0x0000000006861000-memory.dmp

Filesize
4KB

Download

Analysis

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