orcus | fc9f450bc1927e864a5f9cad97642515b5daeab7f35ed85257a1b82f4a7ae844

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2024 21:44

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General

Target

O1.exe
Size

3.0MB
MD5

5b981f0c4df0ac1e4ac7044efd855ef3
SHA1

1a916b685f846e9bdbd14c789e098dcd442adf7d
SHA256

fc9f450bc1927e864a5f9cad97642515b5daeab7f35ed85257a1b82f4a7ae844
SHA512

48d1ff7f2e607cc634c2ec9e5c776b166a923a08595e2446b47fc42bd322d632d77526da2b72ca041e591c09cf2f5ab70809b3488ba2ca59437b14cefd01417e
SSDEEP

49152:F74R0QyXQrZeM9/FMDjjVZFGFeHzHt5AmYAypQxbJyBBo9JnCmwWncFf0I74gu3l:Fc2KQ4MDjZZF08t5AmXypSbMBo9JCm

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

h2xo9w.ddns.net:10134

Mutex

df6697f408f645e0adc2ec3085681727

Attributes

autostart_method
TaskScheduler
enable_keylogger
true
install_path
%appdata%\Antimalware Service\Antimalware Service.exe
reconnect_delay
10000
registry_keyname
Antimalware Service
taskscheduler_taskname
Antimalware Service
watchdog_path
AppData\Antimalware Service Helper.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/1740-1-0x000001C1D45B0000-0x000001C1D48AA000-memory.dmp	orcus
behavioral2/files/0x000900000002353e-13.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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	O1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	Antimalware Service.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	Antimalware Service Helper.exe

Executes dropped EXE 4 IoCs

pid	Process
2316	Antimalware Service.exe
4540	Antimalware Service.exe
1732	Antimalware Service Helper.exe
3120	Antimalware Service Helper.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 2 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	Antimalware Service Helper.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Antimalware Service Helper.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2316	Antimalware Service.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe
2316	Antimalware Service.exe
3120	Antimalware Service Helper.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2316	Antimalware Service.exe
Token: SeDebugPrivilege	1732	Antimalware Service Helper.exe
Token: SeDebugPrivilege	3120	Antimalware Service Helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2316	Antimalware Service.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 2316	1740	O1.exe	89
PID 1740 wrote to memory of 2316	1740	O1.exe	89
PID 2316 wrote to memory of 1732	2316	Antimalware Service.exe	91
PID 2316 wrote to memory of 1732	2316	Antimalware Service.exe	91
PID 2316 wrote to memory of 1732	2316	Antimalware Service.exe	91
PID 1732 wrote to memory of 3120	1732	Antimalware Service Helper.exe	93
PID 1732 wrote to memory of 3120	1732	Antimalware Service Helper.exe	93
PID 1732 wrote to memory of 3120	1732	Antimalware Service Helper.exe	93

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\O1.exe
"C:\Users\Admin\AppData\Local\Temp\O1.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Roaming\Antimalware Service\Antimalware Service.exe
  "C:\Users\Admin\AppData\Roaming\Antimalware Service\Antimalware Service.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:2316
- - C:\Users\Admin\AppData\Roaming\Antimalware Service Helper.exe
    "C:\Users\Admin\AppData\Roaming\Antimalware Service Helper.exe" /launchSelfAndExit "C:\Users\Admin\AppData\Roaming\Antimalware Service\Antimalware Service.exe" 2316
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1732
  - - C:\Users\Admin\AppData\Roaming\Antimalware Service Helper.exe
      "C:\Users\Admin\AppData\Roaming\Antimalware Service Helper.exe" /watchProcess "C:\Users\Admin\AppData\Roaming\Antimalware Service\Antimalware Service.exe" 2316
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3120

C:\Users\Admin\AppData\Roaming\Antimalware Service\Antimalware Service.exe
"C:\Users\Admin\AppData\Roaming\Antimalware Service\Antimalware Service.exe"
1⤵
- Executes dropped EXE
PID:4540

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3036,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4184 /prefetch:8
1⤵
PID:1600

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Antimalware Service Helper.exe.log

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Roaming\Antimalware Service Helper.exe

Filesize
9KB

MD5
c48de5dc77e5b1e2ddfe2db2258990e4

SHA1
c543c804c1cc326e61d85a8cb83d2dafc87317a2

SHA256
988113c751ad9d775509fc00cfba2d62385663bfe3587f3b7b681a6660d19db5

SHA512
f28552d9e1c43ae3e024eb2f280f9050cc611ab16d9250afd14702a715ab404e4ab72bc4f3aa27aa8c1ebd0c9a9c1c7bdb73ce08efe4dd705e805015ae24c76c

Download Submit
C:\Users\Admin\AppData\Roaming\Antimalware Service Helper.exe.config

Filesize
157B

MD5
7efa291047eb1202fde7765adac4b00d

SHA1
22d4846caff5e45c18e50738360579fbbed2aa8d

SHA256
807fb6eeaa7c77bf53831d8a4422a53a5d8ccd90e6bbc17c655c0817460407b6

SHA512
159c95eb1e817ba2d281f39c3939dd963ab62c0cd29bf66ca3beb0aff53f4617d47f48474e58319130ae4146a044a42fc75f63c343330c1b6d2be7034b9fa724

Download Submit
C:\Users\Admin\AppData\Roaming\Antimalware Service\Antimalware Service.exe

Filesize
3.0MB

MD5
5b981f0c4df0ac1e4ac7044efd855ef3

SHA1
1a916b685f846e9bdbd14c789e098dcd442adf7d

SHA256
fc9f450bc1927e864a5f9cad97642515b5daeab7f35ed85257a1b82f4a7ae844

SHA512
48d1ff7f2e607cc634c2ec9e5c776b166a923a08595e2446b47fc42bd322d632d77526da2b72ca041e591c09cf2f5ab70809b3488ba2ca59437b14cefd01417e

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

Filesize
349B

MD5
89817519e9e0b4e703f07e8c55247861

SHA1
4636de1f6c997a25c3190f73f46a3fd056238d78

SHA256
f40dfaa50dcbff93611d45607009158f798e9cd845170939b1d6088a7d10ee13

SHA512
b017cb7a522b9c6794f3691cb7266ec82f565a90d7d07cc9beb53b939d2e9bf34275bc25f6f32d9a9c7136a0aab2189d9556af7244450c610d11ed7a4f584ba3

Download Submit
memory/1732-44-0x00000000002F0000-0x00000000002F8000-memory.dmp

Filesize
32KB

Download
memory/1740-5-0x000001C1EEE10000-0x000001C1EEE22000-memory.dmp

Filesize
72KB

Download
memory/1740-4-0x00007FFD3C6E0000-0x00007FFD3D1A1000-memory.dmp

Filesize
10.8MB

Download
memory/1740-1-0x000001C1D45B0000-0x000001C1D48AA000-memory.dmp

Filesize
3.0MB

Download
memory/1740-24-0x00007FFD3C6E0000-0x00007FFD3D1A1000-memory.dmp

Filesize
10.8MB

Download
memory/1740-0-0x00007FFD3C6E3000-0x00007FFD3C6E5000-memory.dmp

Filesize
8KB

Download
memory/1740-3-0x000001C1D64E0000-0x000001C1D64EE000-memory.dmp

Filesize
56KB

Download
memory/1740-2-0x000001C1D6480000-0x000001C1D64DC000-memory.dmp

Filesize
368KB

Download
memory/2316-25-0x00007FFD3C6E0000-0x00007FFD3D1A1000-memory.dmp

Filesize
10.8MB

Download
memory/2316-30-0x00000213CA750000-0x00000213CA760000-memory.dmp

Filesize
64KB

Download
memory/2316-29-0x00000213CA930000-0x00000213CAAF2000-memory.dmp

Filesize
1.8MB

Download
memory/2316-27-0x00000213CA510000-0x00000213CA528000-memory.dmp

Filesize
96KB

Download
memory/2316-26-0x00000213CA350000-0x00000213CA3A8000-memory.dmp

Filesize
352KB

Download
memory/2316-23-0x00007FFD3C6E0000-0x00007FFD3D1A1000-memory.dmp

Filesize
10.8MB

Download
memory/2316-49-0x00007FFD3C6E0000-0x00007FFD3D1A1000-memory.dmp

Filesize
10.8MB

Download
memory/2316-50-0x00007FFD3C6E0000-0x00007FFD3D1A1000-memory.dmp

Filesize
10.8MB

Download