orcus | 5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3

Resubmissions

13-01-2025 05:59

250113-gps49s1qgk 10

12-01-2025 23:44

250112-3rfslsxphr 10

Analysis

max time kernel
900s
max time network
898s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-01-2025 05:59

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General

Target

5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
Size

915KB
MD5

ec7d1fc892a9e267847bfb476f07b25a
SHA1

3ef8f87e97e0cc38d82682837265036f10d5aa0b
SHA256

5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3
SHA512

5b7956b718d154896b89640ce659fee0c52a6963845e23350e38aa142674083b7d3be9657d5a30a5a7ac483bf8be46a29f7890afc9d8b5438d147c7c4f7c96f0
SSDEEP

24576:IXqP4MROxnFD3h74S4xrZlI0AilFEvxHiNpx9:IXjMiJ2rZlI0AilFEvxHiNl

Score

10^/10

orcus winzip discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

winzip

z3roxl33t.hopto.org:7415

Mutex

676113f043a94b71a3b9dfa0e0dd63be

Attributes

autostart_method
TaskScheduler
enable_keylogger
true
install_path
%programfiles%\winzip data\winzip.exe
reconnect_delay
10000
registry_keyname
winzip service
taskscheduler_taskname
winzip services
watchdog_path
Temp\winzip.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/0x000b000000023b8e-54.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b8e-54.dat	orcus
behavioral2/memory/1952-65-0x0000000000680000-0x000000000076A000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	winzip.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	winzip.exe

Executes dropped EXE 8 IoCs

pid	Process
4556	WindowsInput.exe
3504	WindowsInput.exe
1952	winzip.exe
4232	winzip.exe
2240	winzip.exe
4948	winzip.exe
3728	winzip.exe
1496	winzip.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.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\winzip data\winzip.exe	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
File opened for modification	C:\Program Files\winzip data\winzip.exe	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
File created	C:\Program Files\winzip data\winzip.exe.config	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
File created	C:\Windows\assembly\Desktop.ini	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.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	winzip.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winzip.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1952	winzip.exe
1952	winzip.exe
1952	winzip.exe
4948	winzip.exe
4948	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe
1952	winzip.exe
4948	winzip.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1952	winzip.exe
Token: SeDebugPrivilege	2240	winzip.exe
Token: SeDebugPrivilege	4948	winzip.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1952	winzip.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4924 wrote to memory of 4016	4924	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	83
PID 4924 wrote to memory of 4016	4924	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	83
PID 4016 wrote to memory of 4900	4016	csc.exe	85
PID 4016 wrote to memory of 4900	4016	csc.exe	85
PID 4924 wrote to memory of 4556	4924	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	86
PID 4924 wrote to memory of 4556	4924	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	86
PID 4924 wrote to memory of 1952	4924	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	88
PID 4924 wrote to memory of 1952	4924	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	88
PID 1952 wrote to memory of 2240	1952	winzip.exe	90
PID 1952 wrote to memory of 2240	1952	winzip.exe	90
PID 1952 wrote to memory of 2240	1952	winzip.exe	90
PID 2240 wrote to memory of 4948	2240	winzip.exe	91
PID 2240 wrote to memory of 4948	2240	winzip.exe	91
PID 2240 wrote to memory of 4948	2240	winzip.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\5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
C:\Users\Admin\AppData\Local\Temp\5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe cmd /c %SIGILL% "SIGTERM|DELETE|SIGKILL"
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:4924
- 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\cksfq9mg.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4016
- - 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\RES7FA1.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC7FA0.tmp"
    3⤵
    PID:4900
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:4556
- C:\Program Files\winzip data\winzip.exe
  "C:\Program Files\winzip data\winzip.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:1952
- - C:\Users\Admin\AppData\Local\Temp\winzip.exe
    "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /launchSelfAndExit "C:\Program Files\winzip data\winzip.exe" 1952 /protectFile
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2240
  - - C:\Users\Admin\AppData\Local\Temp\winzip.exe
      "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /watchProcess "C:\Program Files\winzip data\winzip.exe" 1952 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4948

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:3504

C:\Program Files\winzip data\winzip.exe
"C:\Program Files\winzip data\winzip.exe"
1⤵
- Executes dropped EXE
PID:4232

C:\Program Files\winzip data\winzip.exe
"C:\Program Files\winzip data\winzip.exe"
1⤵
- Executes dropped EXE
PID:3728

C:\Program Files\winzip data\winzip.exe
"C:\Program Files\winzip data\winzip.exe"
1⤵
- Executes dropped EXE
PID:1496

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

Replay Monitor

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Downloads

C:\Program Files\winzip data\winzip.exe

Filesize
915KB

MD5
ec7d1fc892a9e267847bfb476f07b25a

SHA1
3ef8f87e97e0cc38d82682837265036f10d5aa0b

SHA256
5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3

SHA512
5b7956b718d154896b89640ce659fee0c52a6963845e23350e38aa142674083b7d3be9657d5a30a5a7ac483bf8be46a29f7890afc9d8b5438d147c7c4f7c96f0

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

Filesize
1KB

MD5
9be3069b2cf9222dde6c28dd9180a35a

SHA1
14b76614ed5c94c513b10ada5bd642e888fc1231

SHA256
5e4c38466764be178ea21ba3149d0580d25d035b57e081b3abb9c06a19cfd67a

SHA512
043256f38c20d8765ddf2f1d5912249bfbb017c0b630d24d9e4894f4a759dec66bf0ffaf878ac69e9dfd6db7ec5e090dd69de2333d83299ef43888c394398885

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

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES7FA1.tmp

Filesize
1KB

MD5
44327856adb2afa918752480ff75a3b8

SHA1
00184d7240d6ea86ca2e6069a626b25a9208ca76

SHA256
8bff2b5ad877d2adc0a2bef83c0b741dc037af81d48990cfda6f27294409b049

SHA512
3203900aa3c31b81a74d22099e1dd7da7747cfbc9c955606095aef76c8f1fefceb79fb4e647f9be83340e7d577dd9302de623ba4369478d037c3e2f9f5584f97

Download Submit
C:\Users\Admin\AppData\Local\Temp\cksfq9mg.dll

Filesize
76KB

MD5
bc7d9ddbede3036f78b9aef5b668cbae

SHA1
ba47abcf6703b0fca26d1bcce8d5de346c4b5f12

SHA256
24fe8dee57d658c6e390746de351c8976e87e9dcef114c364b07b0b68a425cf5

SHA512
bcc00f685899821de23dfaa417c2a2a11663d5314348c1aa87378a102df28cbd13b9fc4cc52c45375f19096a63ec257215fadfe5ad29ca1a5efb293ed4fdd185

Download Submit
C:\Users\Admin\AppData\Local\Temp\winzip.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\CSC7FA0.tmp

Filesize
676B

MD5
09e79024b0ee9de78bee2e5ac8d07beb

SHA1
7f58e0e16fe4c9ec3345434c576a205287d47f7a

SHA256
056e2a8ec4496ea760e5cd55fd12cb8c88903069bd06af78a9d2526a66abd1a8

SHA512
ded98adee0bf8759a08208e88ba5963713a31f3742840fd5e102c188a541f1be7e662b44c3bfd534470e5b5d48471db57f27d6fce861542b6e2ef72c332aceb5

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\cksfq9mg.0.cs

Filesize
208KB

MD5
9b5a40792e41ad6011a089c067099858

SHA1
dd88b523ac049a24b7e4ec43bffc0d887f172723

SHA256
608c6f026223b00db244e4a9fab9e9a8b0593317e702d32e8e4ad67c89cfe80a

SHA512
3220f5489f3f7f6dd4ee359a2276f368c051ea17672699ef095e1350453950a8eba7d89a30c45937ee825c5646f80bcf1b4c30bb5253f8e66775ce671cd15dca

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\cksfq9mg.cmdline

Filesize
349B

MD5
aad592e08550935088bca8f6cba41f10

SHA1
5d526c49c26e51038f15a1dd676e65e9b63b73b5

SHA256
5e8cba920aa0bf3d9222b3b1fa1217ec34448400dd34c7436a6e2c6d72d16f29

SHA512
abfc6a4ff089a1b6680f36a2d049519428f4855c0f60499da32c74bee85e538a74657a6982078c43ba64f8b3165ff7617f7001668cab907e3c15db58f9a24cba

Download Submit
memory/1952-67-0x00000000028D0000-0x00000000028E2000-memory.dmp

Filesize
72KB

Download
memory/1952-68-0x0000000002A20000-0x0000000002A6E000-memory.dmp

Filesize
312KB

Download
memory/1952-72-0x0000000002AA0000-0x0000000002AB0000-memory.dmp

Filesize
64KB

Download
memory/1952-71-0x000000001BD90000-0x000000001BF52000-memory.dmp

Filesize
1.8MB

Download
memory/1952-70-0x0000000002A80000-0x0000000002A98000-memory.dmp

Filesize
96KB

Download
memory/1952-65-0x0000000000680000-0x000000000076A000-memory.dmp

Filesize
936KB

Download
memory/2240-86-0x0000000000290000-0x0000000000298000-memory.dmp

Filesize
32KB

Download
memory/3504-48-0x000000001ADA0000-0x000000001AEAA000-memory.dmp

Filesize
1.0MB

Download
memory/4016-21-0x00007FFE10DD0000-0x00007FFE11771000-memory.dmp

Filesize
9.6MB

Download
memory/4016-16-0x00007FFE10DD0000-0x00007FFE11771000-memory.dmp

Filesize
9.6MB

Download
memory/4556-41-0x0000000000480000-0x000000000048C000-memory.dmp

Filesize
48KB

Download
memory/4556-42-0x0000000000D60000-0x0000000000D72000-memory.dmp

Filesize
72KB

Download
memory/4556-43-0x000000001B0C0000-0x000000001B0FC000-memory.dmp

Filesize
240KB

Download
memory/4556-40-0x00007FFE0D9B3000-0x00007FFE0D9B5000-memory.dmp

Filesize
8KB

Download
memory/4924-8-0x000000001CC60000-0x000000001CCFC000-memory.dmp

Filesize
624KB

Download
memory/4924-66-0x00007FFE10DD0000-0x00007FFE11771000-memory.dmp

Filesize
9.6MB

Download
memory/4924-0-0x00007FFE11085000-0x00007FFE11086000-memory.dmp

Filesize
4KB

Download
memory/4924-6-0x000000001C210000-0x000000001C21E000-memory.dmp

Filesize
56KB

Download
memory/4924-7-0x000000001C6F0000-0x000000001CBBE000-memory.dmp

Filesize
4.8MB

Download
memory/4924-26-0x000000001D360000-0x000000001D380000-memory.dmp

Filesize
128KB

Download
memory/4924-25-0x000000001BF80000-0x000000001BF92000-memory.dmp

Filesize
72KB

Download
memory/4924-3-0x000000001C020000-0x000000001C07C000-memory.dmp

Filesize
368KB

Download
memory/4924-23-0x000000001CD30000-0x000000001CD46000-memory.dmp

Filesize
88KB

Download
memory/4924-2-0x00007FFE10DD0000-0x00007FFE11771000-memory.dmp

Filesize
9.6MB

Download
memory/4924-1-0x00007FFE10DD0000-0x00007FFE11771000-memory.dmp

Filesize
9.6MB

Download