orcus | 0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8

General

Target

0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe
Size

919KB
MD5

a8460e01638dddbbb2ab4ea7d90d67b7
SHA1

812d25d53995a93e91e519a7827e7ce90abbbd22
SHA256

0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8
SHA512

82541b1cc204273be276c4abe017583d3a592e113b1926251e7fdb1b2ef2dde36ec3ba4cf9f6706fa897eb1be5c42bc044b117c7df0f9cfe283b44fb3aed1c6a
SSDEEP

24576:AKW4MROxnFi3+serrcI0AilFEvxHPwfoos:AOMio/errcI0AilFEvxHP

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

programme-commission.gl.at.ply.gg:32324

Mutex

47fb5452117446319e9848a0ce452618

Attributes

autostart_method
Registry
enable_keylogger
true
install_path
%programfiles%\Microsoft 365
reconnect_delay
10000
registry_keyname
svchost
taskscheduler_taskname
RtkAudUService64
watchdog_path
AppData\svchost.exe

Signatures

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

Orcus main payload 1 IoCs

resource	yara_rule
behavioral1/files/0x000700000001920f-14.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral1/memory/1568-1-0x0000000000F60000-0x000000000104C000-memory.dmp	orcus
behavioral1/files/0x000700000001920f-14.dat	orcus

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft 365	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe
File opened for modification	C:\Program Files (x86)\Microsoft 365	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe
File created	C:\Program Files (x86)\Microsoft 365.config	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2548	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2548	AcroRd32.exe
2548	AcroRd32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1568 wrote to memory of 2620	1568	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe	31
PID 1568 wrote to memory of 2620	1568	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe	31
PID 1568 wrote to memory of 2620	1568	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe	31
PID 1568 wrote to memory of 2620	1568	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe	31
PID 1568 wrote to memory of 2620	1568	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe	31
PID 1568 wrote to memory of 2620	1568	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe	31
PID 1568 wrote to memory of 2620	1568	0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe	31
PID 2620 wrote to memory of 2548	2620	rundll32.exe	33
PID 2620 wrote to memory of 2548	2620	rundll32.exe	33
PID 2620 wrote to memory of 2548	2620	rundll32.exe	33
PID 2620 wrote to memory of 2548	2620	rundll32.exe	33

C:\Users\Admin\AppData\Local\Temp\0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe
"C:\Users\Admin\AppData\Local\Temp\0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Program Files (x86)\Microsoft 365
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2620
- - 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)\Microsoft 365"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2548

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft 365

Filesize
919KB

MD5
a8460e01638dddbbb2ab4ea7d90d67b7

SHA1
812d25d53995a93e91e519a7827e7ce90abbbd22

SHA256
0b73bf9b3a7e38ea9648a62f8a31e1c19396ed0dc24a08d8dba7412f9ca224e8

SHA512
82541b1cc204273be276c4abe017583d3a592e113b1926251e7fdb1b2ef2dde36ec3ba4cf9f6706fa897eb1be5c42bc044b117c7df0f9cfe283b44fb3aed1c6a

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

Filesize
3KB

MD5
371598612cb26db5a29d64a365d16509

SHA1
0c610dc88884a26d2ba64276f65f68d371495a97

SHA256
575f101ad9af56b430d9340ff0893b5879651749183abe8c6661b4dc986f6978

SHA512
38f169c9aec6b4a425999aa6df9bc0df813170fa79b315a5b965a60330dfb1eb2b638b849d51d0ce5086d924efc0a3e0819215201c5e3d86d7b8fd9312f225b1

Download Submit
memory/1568-0-0x00000000745BE000-0x00000000745BF000-memory.dmp

Filesize
4KB

Download
memory/1568-1-0x0000000000F60000-0x000000000104C000-memory.dmp

Filesize
944KB

Download
memory/1568-2-0x00000000004C0000-0x00000000004CE000-memory.dmp

Filesize
56KB

Download
memory/1568-3-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/1568-4-0x0000000000900000-0x000000000095C000-memory.dmp

Filesize
368KB

Download
memory/1568-5-0x0000000000A30000-0x0000000000A42000-memory.dmp

Filesize
72KB

Download
memory/1568-6-0x0000000000A90000-0x0000000000A98000-memory.dmp

Filesize
32KB

Download
memory/1568-7-0x0000000000AA0000-0x0000000000AA8000-memory.dmp

Filesize
32KB

Download
memory/1568-15-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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