orcus | 72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
03-07-2024 01:01

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General

Target

72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe
Size

3.0MB
MD5

0bbd9bfe28fdd6f61582c5b06c3f592f
SHA1

c16d94dd136b8a4199a4d6edb80de798dfbe44e4
SHA256

72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c
SHA512

993f0b532a72e7cd0bf98ca588ff1c3ce5ae10c30407b66cdf47dd599a4fb30e59839badf28ee3cfc02ab91130b5b5b89173f0c02e7be80c60ed2695f6d03349
SSDEEP

49152:4caN8QFUwqYZeM9/ZzzBjMkPUayX82+YXAypQxb9ndo9JnCm/WncFf0I74gu35kM:4h0wGGzBjryX82uypSb9ndo9JCm

Score

10^/10

orcus rat spyware stealer

Malware Config

Extracted

Family

orcus

5.29.153.174:2315

Mutex

2889f4dd8f0745d8a986434159494918

Attributes

autostart_method
TaskScheduler
enable_keylogger
true
install_path
%programfiles%\kernel\kernel.exe
reconnect_delay
10000
registry_keyname
Orcus
taskscheduler_taskname
kerneltask
watchdog_path
AppData\SystemKernel.exe

Signatures

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

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/memory/4076-1-0x000001B137510000-0x000001B13780C000-memory.dmp	orcus
behavioral2/files/0x0007000000023569-35.dat	orcus

Checks computer location settings 2 TTPs 3 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-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	kernel.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	SystemKernel.exe

Executes dropped EXE 6 IoCs

pid	Process
3016	WindowsInput.exe
3508	WindowsInput.exe
800	kernel.exe
1400	kernel.exe
744	SystemKernel.exe
2344	SystemKernel.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files\kernel\kernel.exe	72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe
File opened for modification	C:\Program Files\kernel\kernel.exe	72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe
File created	C:\Program Files\kernel\kernel.exe.config	72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
800	kernel.exe
800	kernel.exe
800	kernel.exe
2344	SystemKernel.exe
2344	SystemKernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe
2344	SystemKernel.exe
800	kernel.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	800	kernel.exe
Token: SeDebugPrivilege	744	SystemKernel.exe
Token: SeDebugPrivilege	2344	SystemKernel.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
800	kernel.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 3016	4076	72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe	84
PID 4076 wrote to memory of 3016	4076	72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe	84
PID 4076 wrote to memory of 800	4076	72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe	88
PID 4076 wrote to memory of 800	4076	72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe	88
PID 800 wrote to memory of 744	800	kernel.exe	90
PID 800 wrote to memory of 744	800	kernel.exe	90
PID 800 wrote to memory of 744	800	kernel.exe	90
PID 744 wrote to memory of 2344	744	SystemKernel.exe	91
PID 744 wrote to memory of 2344	744	SystemKernel.exe	91
PID 744 wrote to memory of 2344	744	SystemKernel.exe	91

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\72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe
"C:\Users\Admin\AppData\Local\Temp\72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:3016
- C:\Program Files\kernel\kernel.exe
  "C:\Program Files\kernel\kernel.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:800
- - C:\Users\Admin\AppData\Roaming\SystemKernel.exe
    "C:\Users\Admin\AppData\Roaming\SystemKernel.exe" /launchSelfAndExit "C:\Program Files\kernel\kernel.exe" 800 /protectFile
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:744
  - - C:\Users\Admin\AppData\Roaming\SystemKernel.exe
      "C:\Users\Admin\AppData\Roaming\SystemKernel.exe" /watchProcess "C:\Program Files\kernel\kernel.exe" 800 "/protectFile"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2344

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:3508

C:\Program Files\kernel\kernel.exe
"C:\Program Files\kernel\kernel.exe"
1⤵
- Executes dropped EXE
PID:1400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\kernel\kernel.exe

Filesize
3.0MB

MD5
0bbd9bfe28fdd6f61582c5b06c3f592f

SHA1
c16d94dd136b8a4199a4d6edb80de798dfbe44e4

SHA256
72f9504b130153501946181572ec2defba3bff65f5eda1cc99316dd6c870d01c

SHA512
993f0b532a72e7cd0bf98ca588ff1c3ce5ae10c30407b66cdf47dd599a4fb30e59839badf28ee3cfc02ab91130b5b5b89173f0c02e7be80c60ed2695f6d03349

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\SystemKernel.exe.log

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Roaming\SystemKernel.exe

Filesize
9KB

MD5
8ace06702ec59d170ca2b31f95812e0f

SHA1
de36712adf9b67d0b4c99d12eb59361adfc5473f

SHA256
f74d37fae8e3fb82eff8d6acf755687d9fb38403c38512ad794f16d5b471ce45

SHA512
5d4dc9ad439f66a17f286800559f1ad13f798cf633eaa7319f41691f2d11a519cccab568e0dd2cadebe4258f51d760fab9ca67e7ecb6c97ff496c9308de6cec5

Download Submit
C:\Users\Admin\AppData\Roaming\SystemKernel.exe.config

Filesize
159B

MD5
740dde6369b1c855ea2f8e171fa888c8

SHA1
db3f1c7e5e4c087cf9eb02376fd750f1879f28f8

SHA256
e03c480b46464159387618445ca9fd9870b53e092e2278837f2d5a54daf06cae

SHA512
114607dcee4439e5e5c97ca986a65c8114a0e3f3c56f494ef6eaac9cb0f9ebf29b828aabc3100e4be197c94d54a7c26513942c56806bfb3bb0d3594ffef7458c

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/744-64-0x00000000003D0000-0x00000000003D8000-memory.dmp

Filesize
32KB

Download
memory/800-48-0x000002057CD50000-0x000002057CD68000-memory.dmp

Filesize
96KB

Download
memory/800-46-0x000002057CDB0000-0x000002057CE08000-memory.dmp

Filesize
352KB

Download
memory/800-50-0x000002057D490000-0x000002057D652000-memory.dmp

Filesize
1.8MB

Download
memory/800-49-0x000002057CD70000-0x000002057CD80000-memory.dmp

Filesize
64KB

Download
memory/3016-23-0x00007FFCAB900000-0x00007FFCAC3C1000-memory.dmp

Filesize
10.8MB

Download
memory/3016-19-0x000001D34D630000-0x000001D34D63C000-memory.dmp

Filesize
48KB

Download
memory/3016-27-0x00007FFCAB900000-0x00007FFCAC3C1000-memory.dmp

Filesize
10.8MB

Download
memory/3016-20-0x00007FFCAB900000-0x00007FFCAC3C1000-memory.dmp

Filesize
10.8MB

Download
memory/3016-22-0x000001D34F260000-0x000001D34F29C000-memory.dmp

Filesize
240KB

Download
memory/3016-21-0x000001D34DA20000-0x000001D34DA32000-memory.dmp

Filesize
72KB

Download
memory/3508-29-0x000001C6FA7C0000-0x000001C6FA8CA000-memory.dmp

Filesize
1.0MB

Download
memory/4076-0-0x00007FFCAB903000-0x00007FFCAB905000-memory.dmp

Filesize
8KB

Download
memory/4076-45-0x00007FFCAB900000-0x00007FFCAC3C1000-memory.dmp

Filesize
10.8MB

Download
memory/4076-5-0x000001B151C10000-0x000001B151C22000-memory.dmp

Filesize
72KB

Download
memory/4076-4-0x00007FFCAB900000-0x00007FFCAC3C1000-memory.dmp

Filesize
10.8MB

Download
memory/4076-2-0x000001B151D50000-0x000001B151DAC000-memory.dmp

Filesize
368KB

Download
memory/4076-3-0x000001B139480000-0x000001B13948E000-memory.dmp

Filesize
56KB

Download
memory/4076-1-0x000001B137510000-0x000001B13780C000-memory.dmp

Filesize
3.0MB

Download