orcus | 7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763

General

Target

7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe
Size

915KB
MD5

f37bc9964f10880e3e89528cc4d1f677
SHA1

3657ae613f45ae0609b0bea854104f1bd398b038
SHA256

7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763
SHA512

a4dea6d511b8fd167f130a8e85a549a7f80869ca8584fd129437b991bab227823852b8e5274ec082714e0bf5388aefbd7a5f6ff17f15335ecb2b3ba634c0b450
SSDEEP

24576:lBB4MROxnF033dkrrcI0AilFEvxHPmooo:lQMi+SrrcI0AilFEvxHP

Score

10^/10

orcus rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

100.114.145.122:7777

Mutex

58040c8e707f46aeaa354c0509774164

Attributes

autostart_method
TaskScheduler
enable_keylogger
true
install_path
%programfiles%\userprofile
reconnect_delay
10000
registry_keyname
svchostt
taskscheduler_taskname
svchostt
watchdog_path
AppData\powershell.exe

Signatures

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

Orcus main payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0034000000015653-15.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral1/memory/3008-1-0x0000000000B50000-0x0000000000C3A000-memory.dmp	orcus
behavioral1/files/0x0034000000015653-15.dat	orcus

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\userprofile	7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe
File opened for modification	C:\Program Files (x86)\userprofile	7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe
File created	C:\Program Files (x86)\userprofile.config	7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2732	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2732	AcroRd32.exe
2732	AcroRd32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2644	3008	7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe	29
PID 3008 wrote to memory of 2644	3008	7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe	29
PID 3008 wrote to memory of 2644	3008	7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe	29
PID 3008 wrote to memory of 2644	3008	7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe	29
PID 3008 wrote to memory of 2644	3008	7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe	29
PID 3008 wrote to memory of 2644	3008	7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe	29
PID 3008 wrote to memory of 2644	3008	7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe	29
PID 2644 wrote to memory of 2732	2644	rundll32.exe	30
PID 2644 wrote to memory of 2732	2644	rundll32.exe	30
PID 2644 wrote to memory of 2732	2644	rundll32.exe	30
PID 2644 wrote to memory of 2732	2644	rundll32.exe	30

C:\Users\Admin\AppData\Local\Temp\7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe
"C:\Users\Admin\AppData\Local\Temp\7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Program Files (x86)\userprofile
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2644
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Program Files (x86)\userprofile"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\userprofile

Filesize
915KB

MD5
f37bc9964f10880e3e89528cc4d1f677

SHA1
3657ae613f45ae0609b0bea854104f1bd398b038

SHA256
7735b9fa1bf55cf0c008e81deb1353cf6465a6a0513f00670fc3eb4254562763

SHA512
a4dea6d511b8fd167f130a8e85a549a7f80869ca8584fd129437b991bab227823852b8e5274ec082714e0bf5388aefbd7a5f6ff17f15335ecb2b3ba634c0b450

Download Submit
C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
5ac77dcd8660f82331c9d05cb222cef2

SHA1
5100bfacce596197a768d4ba6b265726e06979ab

SHA256
2aca84ee48c0480b26ccd8e0661601608b2d38b1aae27f786c278faef69a21b4

SHA512
eba9ff57ef44ab53b932b975461eefeb8129ef55475a0d5d7a8a10ac0215156dc078e742e1166cc3f6815757d1104d72bbcd2a7c614172a6c6d7e924369b136c

Download Submit
memory/3008-0-0x00000000744EE000-0x00000000744EF000-memory.dmp

Filesize
4KB

Download
memory/3008-1-0x0000000000B50000-0x0000000000C3A000-memory.dmp

Filesize
936KB

Download
memory/3008-2-0x0000000000270000-0x000000000027E000-memory.dmp

Filesize
56KB

Download
memory/3008-3-0x00000000744E0000-0x0000000074BCE000-memory.dmp

Filesize
6.9MB

Download
memory/3008-4-0x0000000000750000-0x00000000007AC000-memory.dmp

Filesize
368KB

Download
memory/3008-5-0x0000000000470000-0x0000000000482000-memory.dmp

Filesize
72KB

Download
memory/3008-6-0x0000000000490000-0x0000000000498000-memory.dmp

Filesize
32KB

Download
memory/3008-7-0x00000000004A0000-0x00000000004A8000-memory.dmp

Filesize
32KB

Download
memory/3008-14-0x00000000744E0000-0x0000000074BCE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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