orcus | dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-02-2025 01:13

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General

Target

dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe
Size

920KB
MD5

09f07afdf05a07d4fc75bba271c1d55f
SHA1

ce46cf71cacb51b41ae548e9a6c272fc88c0b048
SHA256

dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449
SHA512

7d7107eb34f1bd8ea3e0afa54bc1588a245211146748e29709dd15f9c83fbddbe1a013828d315bccf7bcb1a6460ef6eeba292bad8da65138314f1213a2cf1ad9
SSDEEP

24576:9wV4MROxnFZ3+kTZKrZlI0AilFEvxHiei4:9wCMi7wrZlI0AilFEvxHie

Score

10^/10

orcus discovery persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

147.185.221.24:35724

Mutex

2343b4b69eb4448f8b90fbdd06301150

Attributes

autostart_method
Registry
enable_keylogger
false
install_path
%programfiles%\svchost.exe
reconnect_delay
10000
registry_keyname
svchost
taskscheduler_taskname
svchosts
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
behavioral2/files/0x0009000000023bfc-54.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023bfc-54.dat	orcus
behavioral2/memory/3856-64-0x0000000000DA0000-0x0000000000E8C000-memory.dmp	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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	svchost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 6 IoCs

pid	Process
4292	WindowsInput.exe
3612	WindowsInput.exe
3856	svchost.exe
4620	svchost.exe
2172	svchost.exe
3948	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Program Files\\svchost.exe\""	svchost.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.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\svchost.exe	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe
File opened for modification	C:\Program Files\svchost.exe	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe
File created	C:\Program Files\svchost.exe.config	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly\Desktop.ini	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe
File opened for modification	C:\Windows\assembly	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe
File created	C:\Windows\assembly\Desktop.ini	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3856	svchost.exe
3856	svchost.exe
3948	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3948	svchost.exe
3856	svchost.exe
3856	svchost.exe
3948	svchost.exe
3948	svchost.exe
3856	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe
3856	svchost.exe
3948	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	svchost.exe
Token: SeDebugPrivilege	3856	svchost.exe
Token: SeDebugPrivilege	3948	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3156 wrote to memory of 3776	3156	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe	82
PID 3156 wrote to memory of 3776	3156	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe	82
PID 3776 wrote to memory of 1000	3776	csc.exe	84
PID 3776 wrote to memory of 1000	3776	csc.exe	84
PID 3156 wrote to memory of 4292	3156	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe	85
PID 3156 wrote to memory of 4292	3156	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe	85
PID 3156 wrote to memory of 3856	3156	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe	87
PID 3156 wrote to memory of 3856	3156	dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe	87
PID 3856 wrote to memory of 2172	3856	svchost.exe	89
PID 3856 wrote to memory of 2172	3856	svchost.exe	89
PID 3856 wrote to memory of 2172	3856	svchost.exe	89
PID 2172 wrote to memory of 3948	2172	svchost.exe	90
PID 2172 wrote to memory of 3948	2172	svchost.exe	90
PID 2172 wrote to memory of 3948	2172	svchost.exe	90

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\dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe
"C:\Users\Admin\AppData\Local\Temp\dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3156
- C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\wuefddxw.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3776
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES8A4F.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC8A4E.tmp"
    3⤵
    PID:1000
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:4292
- C:\Program Files\svchost.exe
  "C:\Program Files\svchost.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3856
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe" /launchSelfAndExit "C:\Program Files\svchost.exe" 3856 /protectFile
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2172
  - - C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe" /watchProcess "C:\Program Files\svchost.exe" 3856 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3948

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:3612

C:\Program Files\svchost.exe
"C:\Program Files\svchost.exe"
1⤵
- Executes dropped EXE
PID:4620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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:\Program Files\svchost.exe

Filesize
920KB

MD5
09f07afdf05a07d4fc75bba271c1d55f

SHA1
ce46cf71cacb51b41ae548e9a6c272fc88c0b048

SHA256
dc34a84ca9c36fbc3d047f9d3c2ca8cd4f9060fbef49f0b4f13cec77944cf449

SHA512
7d7107eb34f1bd8ea3e0afa54bc1588a245211146748e29709dd15f9c83fbddbe1a013828d315bccf7bcb1a6460ef6eeba292bad8da65138314f1213a2cf1ad9

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

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES8A4F.tmp

Filesize
1KB

MD5
ee98ad365acd2768acff535b138f4e47

SHA1
dd686b48f34d70e8fc061f05a12b8c0f61dc30ed

SHA256
0b54f7b810394b48e021932ea2590fe96dd00ac1a26f033db4cee2db40c4d48c

SHA512
fe64bfe2eaa8292ff650d6b67d6f244ad7f796a62277ad85460312b78c1effcbd28ba7c8f826b8bef567ad3a3203cecfe814dbb38eaf7ad8ff042994d39bd341

Download Submit
C:\Users\Admin\AppData\Local\Temp\wuefddxw.dll

Filesize
76KB

MD5
3866b196bd28c639b1922e56e45ead15

SHA1
b332152c550a6dc07694fa2114f3e92a0a4db52b

SHA256
2318818254f01e8cd608b1b065f78016d04e4cc7cf57c9a6b77ec3b70081d26f

SHA512
e6c45d9eb69042a1d40c27f62f8de138c6bf30a0816c94c0677c2889e816fc1387511a1793c92a2f37fc02360a36a73bda5d38f4df3e0b6d2397ccf7bc45acbd

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

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe

Filesize
21KB

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\CSC8A4E.tmp

Filesize
676B

MD5
47a98489c4a8706eead2cc4a64e8b21f

SHA1
b0661c289416694f18d577b0da1080486a23ac3b

SHA256
1211eef349cd3e8b2b97acae96a48ca5b022905a1d6c595d3d903de406bf74ef

SHA512
e20fdd42ada8902f4a6ab2e092060e0a36255242af103429bd8e947d051563e567e60aa184240a0444cc41901378cc59159ee402248f411e91ddf07ac11b5e68

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\wuefddxw.0.cs

Filesize
208KB

MD5
7927e876227816dd6da328f256a3b90b

SHA1
2fa4a8d5990ce0cccfd10b77f2dd0d71c3ffddd2

SHA256
3425c2dff07757d2424b6e2b6da6d0d2d8366d2a42a9ce1990f2f752ee268fc9

SHA512
21fea77dcb1da421cc9f5b7da4fcbef1ceff884f85d5b955b25c3e59d5226bfdf0a9f5fc73477591eab7fdc543e28582372aa431394774489737d84559ca8a69

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\wuefddxw.cmdline

Filesize
349B

MD5
67cc1a7666bf92a2dc4471307d19e0c3

SHA1
a2cc0a48daf7b91e7584d06764e1f3b8b807176d

SHA256
d624e9145c71f2ace7e9b250a8c095115fc7d7e254250f5991d15c74f7fccf54

SHA512
7596381493629d711b25e687d09c922271c6e2fa9fc397ab5a99d5dfca8a1216414f8de7a85e3a1dcd57b8f1795180d7770c4f67ba072bc2c36e7bea7d2f32f5

Download Submit
memory/2172-84-0x00000000005D0000-0x00000000005D8000-memory.dmp

Filesize
32KB

Download
memory/3156-26-0x000000001CFA0000-0x000000001CFC0000-memory.dmp

Filesize
128KB

Download
memory/3156-6-0x00007FFFCD410000-0x00007FFFCDDB1000-memory.dmp

Filesize
9.6MB

Download
memory/3156-23-0x000000001CF60000-0x000000001CF76000-memory.dmp

Filesize
88KB

Download
memory/3156-8-0x000000001C8A0000-0x000000001C93C000-memory.dmp

Filesize
624KB

Download
memory/3156-25-0x000000001BBB0000-0x000000001BBC2000-memory.dmp

Filesize
72KB

Download
memory/3156-65-0x00007FFFCD410000-0x00007FFFCDDB1000-memory.dmp

Filesize
9.6MB

Download
memory/3156-7-0x000000001C330000-0x000000001C7FE000-memory.dmp

Filesize
4.8MB

Download
memory/3156-5-0x000000001BE50000-0x000000001BE5E000-memory.dmp

Filesize
56KB

Download
memory/3156-1-0x00007FFFCD410000-0x00007FFFCDDB1000-memory.dmp

Filesize
9.6MB

Download
memory/3156-0-0x00007FFFCD6C5000-0x00007FFFCD6C6000-memory.dmp

Filesize
4KB

Download
memory/3156-2-0x000000001BC60000-0x000000001BCBC000-memory.dmp

Filesize
368KB

Download
memory/3612-48-0x000000001A010000-0x000000001A11A000-memory.dmp

Filesize
1.0MB

Download
memory/3776-18-0x00007FFFCD410000-0x00007FFFCDDB1000-memory.dmp

Filesize
9.6MB

Download
memory/3776-21-0x00007FFFCD410000-0x00007FFFCDDB1000-memory.dmp

Filesize
9.6MB

Download
memory/3856-67-0x000000001DD80000-0x000000001DDCE000-memory.dmp

Filesize
312KB

Download
memory/3856-64-0x0000000000DA0000-0x0000000000E8C000-memory.dmp

Filesize
944KB

Download
memory/3856-66-0x000000001BBB0000-0x000000001BBC2000-memory.dmp

Filesize
72KB

Download
memory/3856-69-0x000000001DF10000-0x000000001DF28000-memory.dmp

Filesize
96KB

Download
memory/3856-70-0x000000001E030000-0x000000001E040000-memory.dmp

Filesize
64KB

Download
memory/4292-43-0x0000000000E60000-0x0000000000E9C000-memory.dmp

Filesize
240KB

Download
memory/4292-42-0x0000000000CC0000-0x0000000000CD2000-memory.dmp

Filesize
72KB

Download
memory/4292-40-0x00007FFFCA743000-0x00007FFFCA745000-memory.dmp

Filesize
8KB

Download
memory/4292-41-0x00000000004F0000-0x00000000004FC000-memory.dmp

Filesize
48KB

Download