orcus | 5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3

Resubmissions

13-01-2025 05:59

250113-gps49s1qgk 10

12-01-2025 23:44

250112-3rfslsxphr 10

Analysis

max time kernel
119s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-01-2025 23:44

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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/0x0008000000023cb6-54.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023cb6-54.dat	orcus
behavioral2/memory/5060-65-0x00000000000D0000-0x00000000001BA000-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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	winzip.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	winzip.exe

Executes dropped EXE 6 IoCs

pid	Process
4908	WindowsInput.exe
3052	WindowsInput.exe
5060	winzip.exe
2068	winzip.exe
312	winzip.exe
836	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 created	C:\Windows\assembly\Desktop.ini	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
File opened for modification	C:\Windows\assembly	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
5060	winzip.exe
5060	winzip.exe
5060	winzip.exe
836	winzip.exe
836	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe
5060	winzip.exe
836	winzip.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5060	winzip.exe
Token: SeDebugPrivilege	312	winzip.exe
Token: SeDebugPrivilege	836	winzip.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5060	winzip.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3892 wrote to memory of 4564	3892	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	85
PID 3892 wrote to memory of 4564	3892	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	85
PID 4564 wrote to memory of 1264	4564	csc.exe	87
PID 4564 wrote to memory of 1264	4564	csc.exe	87
PID 3892 wrote to memory of 4908	3892	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	88
PID 3892 wrote to memory of 4908	3892	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	88
PID 3892 wrote to memory of 5060	3892	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	90
PID 3892 wrote to memory of 5060	3892	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	90
PID 5060 wrote to memory of 312	5060	winzip.exe	94
PID 5060 wrote to memory of 312	5060	winzip.exe	94
PID 5060 wrote to memory of 312	5060	winzip.exe	94
PID 312 wrote to memory of 836	312	winzip.exe	98
PID 312 wrote to memory of 836	312	winzip.exe	98
PID 312 wrote to memory of 836	312	winzip.exe	98

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"
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:3892
- 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\bwdguurd.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4564
- - 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\RESB3B1.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCB3B0.tmp"
    3⤵
    PID:1264
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:4908
- 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:5060
- - C:\Users\Admin\AppData\Local\Temp\winzip.exe
    "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /launchSelfAndExit "C:\Program Files\winzip data\winzip.exe" 5060 /protectFile
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:312
  - - C:\Users\Admin\AppData\Local\Temp\winzip.exe
      "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /watchProcess "C:\Program Files\winzip data\winzip.exe" 5060 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:836

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:3052

C:\Program Files\winzip data\winzip.exe
"C:\Program Files\winzip data\winzip.exe"
1⤵
- Executes dropped EXE
PID:2068

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_32\UsageLogs\winzip.exe.log

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESB3B1.tmp

Filesize
1KB

MD5
6718c60a6970add0d5ff13a36b5c10bf

SHA1
5536b1ec87057ad6bf6891a286be821cd0094c98

SHA256
f33cd94286167107014dd17cfd8840372f3da60200338f4610b04ca62cf0ed11

SHA512
ab11de932f5e4c8402ca2900335d2725278976e151b3b6d784d1319b444e3beeb68a67826138a170dfeed112e2c4b47de6afcecc6b12188aa1cda45cc8d8f58a

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

Filesize
76KB

MD5
07676364470119fe6d6c64bb5cee70c3

SHA1
6f7b34b9b9de716c73273e10fba7cdbb666921a1

SHA256
469930cd686369e7ee644361775092904ba322347b5af20d96a2cd0d69248365

SHA512
787e421fb285418a0221a9dfd762ef4dd8d84ffb41ee37326fe00c55891fde3aa752d7d0c50a8df24703c0b900c37482908b780695a502b89623780ecd29eda2

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\CSCB3B0.tmp

Filesize
676B

MD5
f0a29f47de80a899d5d73a7e7a771629

SHA1
6be3de17a79b764eaf9fdbc4ddf93cde466c0e03

SHA256
58e3f9e19e3243c3e697a77001234ef7a151cfbd6a34ed02eeab3c2be658af3f

SHA512
25ddc9009b52538af87468a5cde4173ece50dadded18838bb886fd7c58ab821f18911ac0a39624129c02e32b07e1bb666a35514e24eaf8fc30338c7987c2519b

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

Filesize
208KB

MD5
10fa95b077cf776129c8ef86555aad8b

SHA1
01ea48db05db88338cd055391365f2628d81e766

SHA256
364f06beb78ee8bd57ac34de127ed831b256072d10b33ea4027816ec1183e342

SHA512
f5eaad79583d4b8bca1ac32b6cdec295695aad0b751be1fa32540511c4643a184d287dc9435cbb0ae18fa5df9257d2f076eaf3d9acfe70f0ee17c2594c4a8b9a

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

Filesize
349B

MD5
095f6d338decf6c284d30b4d512b1e06

SHA1
0ec255daa8d3e9c465a494dc6d6d4ae4baef7127

SHA256
9849c672dea5db3c67f8f3f89dead24d4d5a805b86575114704a07fe2966440a

SHA512
dbdcf3220e2c13bb097de2a9f67b4701a74fe4a21655ca37b52f7d4840edafb67b52467e9db6db9ef9a1f887d758fd37bd9ba9280f26d5dd04d8f05082f3868c

Download Submit
memory/312-86-0x00000000001A0000-0x00000000001A8000-memory.dmp

Filesize
32KB

Download
memory/3052-48-0x0000000019D70000-0x0000000019E7A000-memory.dmp

Filesize
1.0MB

Download
memory/3892-7-0x00007FFF75AF0000-0x00007FFF76491000-memory.dmp

Filesize
9.6MB

Download
memory/3892-23-0x000000001C060000-0x000000001C076000-memory.dmp

Filesize
88KB

Download
memory/3892-8-0x000000001CBE0000-0x000000001CC7C000-memory.dmp

Filesize
624KB

Download
memory/3892-25-0x000000001BE80000-0x000000001BE92000-memory.dmp

Filesize
72KB

Download
memory/3892-26-0x000000001CC80000-0x000000001CCA0000-memory.dmp

Filesize
128KB

Download
memory/3892-66-0x00007FFF75AF0000-0x00007FFF76491000-memory.dmp

Filesize
9.6MB

Download
memory/3892-6-0x000000001C670000-0x000000001CB3E000-memory.dmp

Filesize
4.8MB

Download
memory/3892-1-0x00007FFF75AF0000-0x00007FFF76491000-memory.dmp

Filesize
9.6MB

Download
memory/3892-2-0x000000001BF60000-0x000000001BFBC000-memory.dmp

Filesize
368KB

Download
memory/3892-0-0x00007FFF75DA5000-0x00007FFF75DA6000-memory.dmp

Filesize
4KB

Download
memory/3892-5-0x000000001C020000-0x000000001C02E000-memory.dmp

Filesize
56KB

Download
memory/4564-21-0x00007FFF75AF0000-0x00007FFF76491000-memory.dmp

Filesize
9.6MB

Download
memory/4564-16-0x00007FFF75AF0000-0x00007FFF76491000-memory.dmp

Filesize
9.6MB

Download
memory/4908-42-0x000000001B410000-0x000000001B422000-memory.dmp

Filesize
72KB

Download
memory/4908-43-0x000000001B470000-0x000000001B4AC000-memory.dmp

Filesize
240KB

Download
memory/4908-41-0x0000000000950000-0x000000000095C000-memory.dmp

Filesize
48KB

Download
memory/4908-40-0x00007FFF72993000-0x00007FFF72995000-memory.dmp

Filesize
8KB

Download
memory/5060-65-0x00000000000D0000-0x00000000001BA000-memory.dmp

Filesize
936KB

Download
memory/5060-67-0x00000000009B0000-0x00000000009C2000-memory.dmp

Filesize
72KB

Download
memory/5060-68-0x000000001B1E0000-0x000000001B22E000-memory.dmp

Filesize
312KB

Download
memory/5060-70-0x00000000022D0000-0x00000000022E8000-memory.dmp

Filesize
96KB

Download
memory/5060-71-0x000000001B640000-0x000000001B802000-memory.dmp

Filesize
1.8MB

Download
memory/5060-72-0x00000000022F0000-0x0000000002300000-memory.dmp

Filesize
64KB

Download