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
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
behavioral1/files/0x0008000000016644-39.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016644-39.dat	orcus
behavioral1/memory/2644-44-0x0000000000200000-0x00000000002EA000-memory.dmp	orcus

Executes dropped EXE 6 IoCs

pid	Process
2748	WindowsInput.exe
2860	WindowsInput.exe
2644	winzip.exe
664	winzip.exe
752	winzip.exe
772	winzip.exe

Loads dropped DLL 1 IoCs

pid	Process
752	winzip.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.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

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
772	winzip.exe
772	winzip.exe
772	winzip.exe
2644	winzip.exe
2644	winzip.exe
2644	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
772	winzip.exe
2644	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
772	winzip.exe
2644	winzip.exe
2644	winzip.exe
772	winzip.exe
772	winzip.exe
2644	winzip.exe
2644	winzip.exe
772	winzip.exe
772	winzip.exe
2644	winzip.exe
2644	winzip.exe
772	winzip.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	winzip.exe
Token: SeDebugPrivilege	752	winzip.exe
Token: SeDebugPrivilege	772	winzip.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2644	winzip.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 1940	2356	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	30
PID 2356 wrote to memory of 1940	2356	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	30
PID 2356 wrote to memory of 1940	2356	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	30
PID 1940 wrote to memory of 2348	1940	csc.exe	32
PID 1940 wrote to memory of 2348	1940	csc.exe	32
PID 1940 wrote to memory of 2348	1940	csc.exe	32
PID 2356 wrote to memory of 2748	2356	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	33
PID 2356 wrote to memory of 2748	2356	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	33
PID 2356 wrote to memory of 2748	2356	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	33
PID 2356 wrote to memory of 2644	2356	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	35
PID 2356 wrote to memory of 2644	2356	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	35
PID 2356 wrote to memory of 2644	2356	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	35
PID 3056 wrote to memory of 664	3056	taskeng.exe	37
PID 3056 wrote to memory of 664	3056	taskeng.exe	37
PID 3056 wrote to memory of 664	3056	taskeng.exe	37
PID 2644 wrote to memory of 752	2644	winzip.exe	38
PID 2644 wrote to memory of 752	2644	winzip.exe	38
PID 2644 wrote to memory of 752	2644	winzip.exe	38
PID 2644 wrote to memory of 752	2644	winzip.exe	38
PID 752 wrote to memory of 772	752	winzip.exe	39
PID 752 wrote to memory of 772	752	winzip.exe	39
PID 752 wrote to memory of 772	752	winzip.exe	39
PID 752 wrote to memory of 772	752	winzip.exe	39

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⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2356
- 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\cf564cp6.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1940
- - 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\RESA111.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCA110.tmp"
    3⤵
    PID:2348
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:2748
- C:\Program Files\winzip data\winzip.exe
  "C:\Program Files\winzip data\winzip.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2644
- - C:\Users\Admin\AppData\Local\Temp\winzip.exe
    "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /launchSelfAndExit "C:\Program Files\winzip data\winzip.exe" 2644 /protectFile
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:752
  - - C:\Users\Admin\AppData\Local\Temp\winzip.exe
      "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /watchProcess "C:\Program Files\winzip data\winzip.exe" 2644 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:772

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:2860

C:\Windows\system32\taskeng.exe
taskeng.exe {AE0F7BBF-9322-4A29-A985-F9A39B8EDC92} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Program Files\winzip data\winzip.exe
  "C:\Program Files\winzip data\winzip.exe"
  2⤵
  - Executes dropped EXE
  PID:664

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:\Program Files\winzip data\winzip.exe

Filesize
915KB

MD5
ec7d1fc892a9e267847bfb476f07b25a

SHA1
3ef8f87e97e0cc38d82682837265036f10d5aa0b

SHA256
5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3

SHA512
5b7956b718d154896b89640ce659fee0c52a6963845e23350e38aa142674083b7d3be9657d5a30a5a7ac483bf8be46a29f7890afc9d8b5438d147c7c4f7c96f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESA111.tmp

Filesize
1KB

MD5
6bc82c196dd67f3d42b0837d8c813b83

SHA1
4ab7acec32f8a502317ee50816b052c28f3f7d53

SHA256
75da95305fc78750037d536f1118090f3fa98259fb5b8c07c157b7e4e45a2d82

SHA512
c58f5582f515f253ca1623d4bef2f27316f15bfe00d8df1efe102827ae2f3d242ff174716a44d4db349d89627c6c8312e4d9bd9db12b21f42ee06c89c2bac1fc

Download Submit
C:\Users\Admin\AppData\Local\Temp\cf564cp6.dll

Filesize
76KB

MD5
ac969ba458f10294e708c2f6ff3af371

SHA1
ef62f9e099d9d3220a034a993e543c6d05b7cf7b

SHA256
6fa09ce901330b031b3ea30cdbff28d333f7998d4e76c3c741a99a62dc8224a2

SHA512
b42d572e8faf8db8cdfc5858a1a6d44db27117beec5af93f9a7e3434474e391c6231715ac528b54c50b3676922cb61f94ea3838ec9f43d5398692582d340f81d

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\CSCA110.tmp

Filesize
676B

MD5
94742e98e445e925e97a0b609354a034

SHA1
c39630ebe6e112cd79e8babff605684217f46eff

SHA256
4515fe29b2b649627adc3bc6b5f8e975cd324e25d208ee8caa767dcd0a0777de

SHA512
76929baf2b8fd3fac90d279540e0a757ca6c0faa1017b8bfc1f7ad1f64a52eafb559a82488c53055232112a40b2afaef27451079e3387b04b2f262aea026839c

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\cf564cp6.0.cs

Filesize
208KB

MD5
ed8e036cc8057b56c36c2bbf9dd97013

SHA1
5a2478443b8f3df4cfc8400aa6dd9faf9eda27b6

SHA256
ec266f3ce9eee57cdd8f5b44bc2925fc99acf051f7f672bd73087dfaad738bc8

SHA512
69d919a3e684895122d7c481cfa7f8cbea1783ec228b4dfd467f2a6674080ef0506391f2f22e6986218dec4502d3695e4c6b15b6deb6a2fcd811eda813585cf3

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\cf564cp6.cmdline

Filesize
349B

MD5
6a47b4495ced40f6453a0ebc65687d0b

SHA1
5777a8b9d5f24e40efebfdcd67b248ce34073603

SHA256
4d36d8ceb5b6e27757ba423f0d16e189b597b0b6357416546a42378347dcacab

SHA512
9e221a7d74fcf4aaa71e95fe18135ccda277dc34819d505e8c752e8a592cfbb9ec8e1291a4f5f2d166ba22ff88286210b2d4c81b00c6f002131807e3ea6478ee

Download Submit
memory/752-57-0x0000000000C00000-0x0000000000C08000-memory.dmp

Filesize
32KB

Download
memory/1940-10-0x000007FEF6490000-0x000007FEF6E2D000-memory.dmp

Filesize
9.6MB

Download
memory/1940-17-0x000007FEF6490000-0x000007FEF6E2D000-memory.dmp

Filesize
9.6MB

Download
memory/2356-2-0x0000000000410000-0x000000000041E000-memory.dmp

Filesize
56KB

Download
memory/2356-43-0x000007FEF6490000-0x000007FEF6E2D000-memory.dmp

Filesize
9.6MB

Download
memory/2356-0-0x000007FEF674E000-0x000007FEF674F000-memory.dmp

Filesize
4KB

Download
memory/2356-19-0x0000000000AF0000-0x0000000000B06000-memory.dmp

Filesize
88KB

Download
memory/2356-1-0x000000001B0B0000-0x000000001B10C000-memory.dmp

Filesize
368KB

Download
memory/2356-4-0x000007FEF6490000-0x000007FEF6E2D000-memory.dmp

Filesize
9.6MB

Download
memory/2356-3-0x000007FEF6490000-0x000007FEF6E2D000-memory.dmp

Filesize
9.6MB

Download
memory/2356-21-0x0000000000430000-0x0000000000442000-memory.dmp

Filesize
72KB

Download
memory/2644-44-0x0000000000200000-0x00000000002EA000-memory.dmp

Filesize
936KB

Download
memory/2644-45-0x000000001AD10000-0x000000001AD5E000-memory.dmp

Filesize
312KB

Download
memory/2644-46-0x0000000000A20000-0x0000000000A38000-memory.dmp

Filesize
96KB

Download
memory/2644-47-0x0000000000800000-0x0000000000810000-memory.dmp

Filesize
64KB

Download
memory/2748-29-0x0000000000120000-0x000000000012C000-memory.dmp

Filesize
48KB

Download
memory/2860-33-0x0000000000830000-0x000000000083C000-memory.dmp

Filesize
48KB

Download