orcus | cf92e7573d34ef42a341d5562357169b90e0542bd66b00d57c84eff686de0400

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27-09-2024 14:03

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General

Target

fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe
Size

918KB
MD5

fa8a33fb3bda39a4ca3cea2500c635b8
SHA1

47c0e3509a249d0d80716da3afe28b5fe765d225
SHA256

cf92e7573d34ef42a341d5562357169b90e0542bd66b00d57c84eff686de0400
SHA512

3fc02998288f88ad2b822281830ac328981b42a94ecfef370b67dd4f6f62724eceabadcba635e401a0ddb5dd77011f199c8e4e68b51e3765e3cdaa66177a9c92
SSDEEP

24576:F1I4MROxnFi3WUrUrZlI0AilFEvxHiSRX:F1rMioN4rZlI0AilFEvxHi

Score

10^/10

orcus discovery persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

87.103.252.59:25565

Mutex

7d661032d74f479fa6fca588ed3ac59f

Attributes

autostart_method
Registry
enable_keylogger
true
install_path
%programfiles%\Steam\depotcache\SteamWebHelper.exe
reconnect_delay
5000
registry_keyname
Windows
taskscheduler_taskname
Windows
watchdog_path
AppData\OrcusWatchdog.exe

Signatures

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

Orcus main payload 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023473-42.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023473-42.dat	orcus
behavioral2/memory/1612-53-0x0000000000E50000-0x0000000000F3C000-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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	SteamWebHelper.exe
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	OrcusWatchdog.exe

Executes dropped EXE 4 IoCs

pid	Process
1612	SteamWebHelper.exe
4052	SteamWebHelper.exe
2800	OrcusWatchdog.exe
1628	OrcusWatchdog.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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "\"C:\\Program Files\\Steam\\depotcache\\SteamWebHelper.exe\""	SteamWebHelper.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files\Steam\depotcache\SteamWebHelper.exe	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe
File opened for modification	C:\Program Files\Steam\depotcache\SteamWebHelper.exe	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe
File created	C:\Program Files\Steam\depotcache\SteamWebHelper.exe.config	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe
File created	C:\Windows\assembly\Desktop.ini	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.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	OrcusWatchdog.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OrcusWatchdog.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1612	SteamWebHelper.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe
1612	SteamWebHelper.exe
1628	OrcusWatchdog.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1612	SteamWebHelper.exe
Token: SeDebugPrivilege	2800	OrcusWatchdog.exe
Token: SeDebugPrivilege	1628	OrcusWatchdog.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1612	SteamWebHelper.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4196 wrote to memory of 3172	4196	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe	82
PID 4196 wrote to memory of 3172	4196	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe	82
PID 3172 wrote to memory of 2536	3172	csc.exe	84
PID 3172 wrote to memory of 2536	3172	csc.exe	84
PID 4196 wrote to memory of 1612	4196	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe	86
PID 4196 wrote to memory of 1612	4196	fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe	86
PID 1612 wrote to memory of 2800	1612	SteamWebHelper.exe	88
PID 1612 wrote to memory of 2800	1612	SteamWebHelper.exe	88
PID 1612 wrote to memory of 2800	1612	SteamWebHelper.exe	88
PID 2800 wrote to memory of 1628	2800	OrcusWatchdog.exe	89
PID 2800 wrote to memory of 1628	2800	OrcusWatchdog.exe	89
PID 2800 wrote to memory of 1628	2800	OrcusWatchdog.exe	89

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\fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fa8a33fb3bda39a4ca3cea2500c635b8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4196
- 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\3mccpacl.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3172
- - 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\RES87A0.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC879F.tmp"
    3⤵
    PID:2536
- C:\Program Files\Steam\depotcache\SteamWebHelper.exe
  "C:\Program Files\Steam\depotcache\SteamWebHelper.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 SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1612
- - C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe
    "C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /launchSelfAndExit "C:\Program Files\Steam\depotcache\SteamWebHelper.exe" 1612 /protectFile
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2800
  - - C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe
      "C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /watchProcess "C:\Program Files\Steam\depotcache\SteamWebHelper.exe" 1612 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1628

C:\Program Files\Steam\depotcache\SteamWebHelper.exe
"C:\Program Files\Steam\depotcache\SteamWebHelper.exe"
1⤵
- Executes dropped EXE
PID:4052

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\Steam\depotcache\SteamWebHelper.exe

Filesize
918KB

MD5
fa8a33fb3bda39a4ca3cea2500c635b8

SHA1
47c0e3509a249d0d80716da3afe28b5fe765d225

SHA256
cf92e7573d34ef42a341d5562357169b90e0542bd66b00d57c84eff686de0400

SHA512
3fc02998288f88ad2b822281830ac328981b42a94ecfef370b67dd4f6f62724eceabadcba635e401a0ddb5dd77011f199c8e4e68b51e3765e3cdaa66177a9c92

Download Submit
C:\Program Files\Steam\depotcache\SteamWebHelper.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

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

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\3mccpacl.dll

Filesize
76KB

MD5
301db0b11b2c554a0348d0ab4dd4f20e

SHA1
e927a2cd36c15b0010f8036191ab9f225e3c956c

SHA256
94988665b87e95f3401b22043c8deca536658cc3987f31ebc180307b8b95961a

SHA512
13707d8d9f9bc25033de56b1bf7f3850f623d493d211283d73ec891003c7f80087a1b1ee76b986577c4fc2836db55698fed34ddcf677d39e7feda26f2a743c2c

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES87A0.tmp

Filesize
1KB

MD5
4f140bea8b2deb5ef2b3c8a2dfd29ccb

SHA1
e94cd423bd36d62db41fa614e28f509ffb0f5125

SHA256
4abdd5676fc4e247cf7707b3ee8937ce6c8d53f6affc4af3b8c7622ff290b454

SHA512
9b5d031075a6b85a11554bec24292e7095b0c2154436cea6be6898f382889ce4c533107ca7cf656a41a29ed7c846f86b483ac3cef12d56af82e25bdcf0bd83bc

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

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Users\Admin\AppData\Roaming\Orcus\err_7d661032d74f479fa6fca588ed3ac59f.dat

Filesize
1KB

MD5
d04e96bab1dbef584fc89a33a702fe03

SHA1
79d97681ff0902e12954135a08531add43b04ea7

SHA256
009b5edddd836e14efd408b20c70b4f2ae573f451ddebf373d5564b5335b9482

SHA512
3527601642ef80b8c5d5fc07261f697663c295934075e60c92812f12492a181e811f534cef243684c0fbb774f4800388db1b99daf5d4ae35d027c948aef4aba9

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\3mccpacl.0.cs

Filesize
208KB

MD5
5178c6c58c604e27470274448ba74220

SHA1
5ed089f74ff7d6f843a16865824f08294a0c8ebb

SHA256
dd96cbbfa578a94812a67a6b532eb5e99f498be4fbf234638820d7d3cd394eb8

SHA512
615138e14631f40ae8b82ab19e6c033092557b7473d02919af85c558012a44bcb891d048be4ba98fc5d171a0da3178c1624f2075abcda12cc77f49861f5fc17f

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\3mccpacl.cmdline

Filesize
349B

MD5
978740e975b3b38fb551e4a9351fe162

SHA1
13821f0319954452f98d702a80051004c0b25547

SHA256
7e72fd6c3b99b7f969a6c4e8289103d2dd5c2bd8ab19b68a01fbc25c9ad74796

SHA512
8b70045fcc97d8208b7c40f7e56fbb30e27b8c857e9117b41ae553d98fe6202007f6db0ee2bc1fd7572750acb5e039d6c1f6bf23a6d4084f9d6cb3129b3a9624

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\CSC879F.tmp

Filesize
676B

MD5
ffea816bdeb3701d41397aa028c0b00c

SHA1
5c125f1ed36079171b40643c149abc81f3bc5d55

SHA256
f5a3c0fefd8e8f1192fea1d5f107f1c703fa8faf5221dbfab23a21c406af4e8a

SHA512
6e98eca431d0c7fb42a1837b358192229a88951cfe20702d901b636978924c69c537bbb1d2301856343618ecf281949c827b3c99006883a383ae534b3e5c338c

Download Submit
memory/1612-57-0x000000001C9F0000-0x000000001CA2C000-memory.dmp

Filesize
240KB

Download
memory/1612-56-0x000000001BAE0000-0x000000001BAF2000-memory.dmp

Filesize
72KB

Download
memory/1612-52-0x00007FFF9B323000-0x00007FFF9B325000-memory.dmp

Filesize
8KB

Download
memory/1612-84-0x00007FFF9B323000-0x00007FFF9B325000-memory.dmp

Filesize
8KB

Download
memory/1612-53-0x0000000000E50000-0x0000000000F3C000-memory.dmp

Filesize
944KB

Download
memory/1612-64-0x000000001D490000-0x000000001D652000-memory.dmp

Filesize
1.8MB

Download
memory/1612-65-0x000000001D230000-0x000000001D240000-memory.dmp

Filesize
64KB

Download
memory/1612-63-0x000000001D100000-0x000000001D118000-memory.dmp

Filesize
96KB

Download
memory/1612-61-0x000000001CD50000-0x000000001CD9E000-memory.dmp

Filesize
312KB

Download
memory/1612-58-0x000000001CB40000-0x000000001CC4A000-memory.dmp

Filesize
1.0MB

Download
memory/1612-55-0x000000001BAA0000-0x000000001BAB2000-memory.dmp

Filesize
72KB

Download
memory/2800-79-0x0000000000FB0000-0x0000000000FB8000-memory.dmp

Filesize
32KB

Download
memory/3172-16-0x00007FFF9E0D0000-0x00007FFF9EA71000-memory.dmp

Filesize
9.6MB

Download
memory/3172-21-0x00007FFF9E0D0000-0x00007FFF9EA71000-memory.dmp

Filesize
9.6MB

Download
memory/4196-6-0x00007FFF9E0D0000-0x00007FFF9EA71000-memory.dmp

Filesize
9.6MB

Download
memory/4196-0-0x00007FFF9E385000-0x00007FFF9E386000-memory.dmp

Filesize
4KB

Download
memory/4196-7-0x000000001C340000-0x000000001C80E000-memory.dmp

Filesize
4.8MB

Download
memory/4196-34-0x000000001E460000-0x000000001E4D0000-memory.dmp

Filesize
448KB

Download
memory/4196-33-0x00007FFF9E0D0000-0x00007FFF9EA71000-memory.dmp

Filesize
9.6MB

Download
memory/4196-32-0x000000001E380000-0x000000001E3C9000-memory.dmp

Filesize
292KB

Download
memory/4196-54-0x00007FFF9E0D0000-0x00007FFF9EA71000-memory.dmp

Filesize
9.6MB

Download
memory/4196-30-0x000000001E280000-0x000000001E370000-memory.dmp

Filesize
960KB

Download
memory/4196-31-0x000000001D4C0000-0x000000001D4DE000-memory.dmp

Filesize
120KB

Download
memory/4196-35-0x00007FFF9E0D0000-0x00007FFF9EA71000-memory.dmp

Filesize
9.6MB

Download
memory/4196-29-0x000000001DCC0000-0x000000001E27A000-memory.dmp

Filesize
5.7MB

Download
memory/4196-5-0x000000001BE60000-0x000000001BE6E000-memory.dmp

Filesize
56KB

Download
memory/4196-28-0x000000001D360000-0x000000001D3C2000-memory.dmp

Filesize
392KB

Download
memory/4196-27-0x000000001BC50000-0x000000001BC58000-memory.dmp

Filesize
32KB

Download
memory/4196-26-0x0000000001880000-0x0000000001888000-memory.dmp

Filesize
32KB

Download
memory/4196-25-0x000000001BBC0000-0x000000001BBD2000-memory.dmp

Filesize
72KB

Download
memory/4196-2-0x000000001BC60000-0x000000001BCBC000-memory.dmp

Filesize
368KB

Download
memory/4196-8-0x000000001C8B0000-0x000000001C94C000-memory.dmp

Filesize
624KB

Download
memory/4196-1-0x00007FFF9E0D0000-0x00007FFF9EA71000-memory.dmp

Filesize
9.6MB

Download
memory/4196-23-0x000000001CF70000-0x000000001CF86000-memory.dmp

Filesize
88KB

Download