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
891s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
behavioral1/files/0x0007000000019334-40.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral1/files/0x0007000000019334-40.dat	orcus
behavioral1/memory/2828-44-0x00000000008F0000-0x00000000009DA000-memory.dmp	orcus

Executes dropped EXE 8 IoCs

pid	Process
2580	WindowsInput.exe
2644	WindowsInput.exe
2828	winzip.exe
2944	winzip.exe
1972	winzip.exe
1196	winzip.exe
648	winzip.exe
1256	winzip.exe

Loads dropped DLL 1 IoCs

pid	Process
1972	winzip.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

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
1196	winzip.exe
1196	winzip.exe
2828	winzip.exe
2828	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe
2828	winzip.exe
1196	winzip.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2828	winzip.exe
Token: SeDebugPrivilege	1972	winzip.exe
Token: SeDebugPrivilege	1196	winzip.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2828	winzip.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1552 wrote to memory of 2896	1552	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	31
PID 1552 wrote to memory of 2896	1552	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	31
PID 1552 wrote to memory of 2896	1552	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	31
PID 2896 wrote to memory of 996	2896	csc.exe	33
PID 2896 wrote to memory of 996	2896	csc.exe	33
PID 2896 wrote to memory of 996	2896	csc.exe	33
PID 1552 wrote to memory of 2580	1552	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	34
PID 1552 wrote to memory of 2580	1552	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	34
PID 1552 wrote to memory of 2580	1552	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	34
PID 1552 wrote to memory of 2828	1552	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	36
PID 1552 wrote to memory of 2828	1552	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	36
PID 1552 wrote to memory of 2828	1552	5b8ec7a0faf0a5c275af5bb510aaecd93bc3358b4626f3eb5a13d891da34d8d3.exe	36
PID 2564 wrote to memory of 2944	2564	taskeng.exe	38
PID 2564 wrote to memory of 2944	2564	taskeng.exe	38
PID 2564 wrote to memory of 2944	2564	taskeng.exe	38
PID 2828 wrote to memory of 1972	2828	winzip.exe	39
PID 2828 wrote to memory of 1972	2828	winzip.exe	39
PID 2828 wrote to memory of 1972	2828	winzip.exe	39
PID 2828 wrote to memory of 1972	2828	winzip.exe	39
PID 1972 wrote to memory of 1196	1972	winzip.exe	40
PID 1972 wrote to memory of 1196	1972	winzip.exe	40
PID 1972 wrote to memory of 1196	1972	winzip.exe	40
PID 1972 wrote to memory of 1196	1972	winzip.exe	40
PID 2564 wrote to memory of 648	2564	taskeng.exe	42
PID 2564 wrote to memory of 648	2564	taskeng.exe	42
PID 2564 wrote to memory of 648	2564	taskeng.exe	42
PID 2564 wrote to memory of 1256	2564	taskeng.exe	43
PID 2564 wrote to memory of 1256	2564	taskeng.exe	43
PID 2564 wrote to memory of 1256	2564	taskeng.exe	43

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⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1552
- 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\jsk8fmjf.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2896
- - 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\RESD470.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCD44F.tmp"
    3⤵
    PID:996
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:2580
- 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:2828
- - C:\Users\Admin\AppData\Local\Temp\winzip.exe
    "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /launchSelfAndExit "C:\Program Files\winzip data\winzip.exe" 2828 /protectFile
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1972
  - - C:\Users\Admin\AppData\Local\Temp\winzip.exe
      "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /watchProcess "C:\Program Files\winzip data\winzip.exe" 2828 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1196

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:2644

C:\Windows\system32\taskeng.exe
taskeng.exe {EC4C05F2-2AE2-424E-A66E-F6199843DD4A} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2564
- C:\Program Files\winzip data\winzip.exe
  "C:\Program Files\winzip data\winzip.exe"
  2⤵
  - Executes dropped EXE
  PID:2944
- C:\Program Files\winzip data\winzip.exe
  "C:\Program Files\winzip data\winzip.exe"
  2⤵
  - Executes dropped EXE
  PID:648
- C:\Program Files\winzip data\winzip.exe
  "C:\Program Files\winzip data\winzip.exe"
  2⤵
  - Executes dropped EXE
  PID:1256

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\Temp\RESD470.tmp

Filesize
1KB

MD5
c50ae84ba33eaca90b59d56c5542b9ce

SHA1
64f4cc2c22accb8159714c217c2ab76d016b0577

SHA256
37926c20db0d7537f450e2b5a1e414b747d64c71dacdbd87e787acff80c6957e

SHA512
cce36230b8f8e5cb5181469afae9ac64792dc6bb04227dc9ee553b60d0015d3d623e690bd0fb143b535b8265baaceabdd6bec9d242074325908dd174fe1bd4f6

Download Submit
C:\Users\Admin\AppData\Local\Temp\jsk8fmjf.dll

Filesize
76KB

MD5
4946551a3ee63542d917e3f540947f01

SHA1
f73bea9e785d8fdc3285b0f824af12c2c43412a1

SHA256
4785e4e4b6079979468e966fbdb23a74d71816ddaf04d7ce2c3880a7fc4cff9f

SHA512
96297d939e984b217935f0eff0627bc5f1c0317ddfa498c65e794089e6429693b9f26cc32732587a2b61844d796642e58d267de29f41e47dffb5dbce8a90bcb8

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\CSCD44F.tmp

Filesize
676B

MD5
f71b1c373188857d49f9d6f040039794

SHA1
b9145ea250f6ce6c6426e19471ffa3d8e8396117

SHA256
67b05155a30ac23a2b030a1bcc23d1464acfaa8a6bae334808795a80fb3c45bd

SHA512
e04b0e09b0808d708bb45d15b68904cac034ab8295f41a18b274883fc4e72b409387cee7f6c6736e19d48250af01a9818ea34ed42b051a41fb466eed78c698f8

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\jsk8fmjf.0.cs

Filesize
208KB

MD5
250321226bbc2a616d91e1c82cb4ab2b

SHA1
7cffd0b2e9c842865d8961386ab8fcfac8d04173

SHA256
ef2707f83a0c0927cfd46b115641b9cae52a41123e4826515b9eeb561785218d

SHA512
bda59ca04cdf254f837f2cec6da55eff5c3d2af00da66537b9ebaa3601c502ae63772f082fd12663b63d537d2e03efe87a3b5746ef25e842aaf1c7d88245b4e1

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\jsk8fmjf.cmdline

Filesize
349B

MD5
d60148b6635cafb32b7d5b4f82736923

SHA1
49c1dc137926d9278d2be7612bf986e2d14ca6f8

SHA256
1816e83b332d9484d708cfbf8a7c1de03f8010895a72dc3cf1bd3f5dc74cacac

SHA512
ffb7478fa7fbdc0b4cc4fad705252a66d2c9b4009a40eed7a8dd12a550dc1315a0894caed4ec27ae7fa9d2ce0e3af790e9063de870df37b5a6fd455de19b30c3

Download Submit
memory/1552-1-0x0000000000DF0000-0x0000000000E4C000-memory.dmp

Filesize
368KB

Download
memory/1552-6-0x000007FEF5C20000-0x000007FEF65BD000-memory.dmp

Filesize
9.6MB

Download
memory/1552-19-0x0000000000BA0000-0x0000000000BB6000-memory.dmp

Filesize
88KB

Download
memory/1552-0-0x000007FEF5EDE000-0x000007FEF5EDF000-memory.dmp

Filesize
4KB

Download
memory/1552-8-0x000007FEF5C20000-0x000007FEF65BD000-memory.dmp

Filesize
9.6MB

Download
memory/1552-2-0x0000000000590000-0x000000000059E000-memory.dmp

Filesize
56KB

Download
memory/1552-21-0x0000000000630000-0x0000000000642000-memory.dmp

Filesize
72KB

Download
memory/1552-41-0x000007FEF5C20000-0x000007FEF65BD000-memory.dmp

Filesize
9.6MB

Download
memory/1972-57-0x00000000002A0000-0x00000000002A8000-memory.dmp

Filesize
32KB

Download
memory/2580-29-0x00000000003D0000-0x00000000003DC000-memory.dmp

Filesize
48KB

Download
memory/2644-33-0x0000000000990000-0x000000000099C000-memory.dmp

Filesize
48KB

Download
memory/2828-44-0x00000000008F0000-0x00000000009DA000-memory.dmp

Filesize
936KB

Download
memory/2828-45-0x0000000002230000-0x000000000227E000-memory.dmp

Filesize
312KB

Download
memory/2828-46-0x0000000002070000-0x0000000002088000-memory.dmp

Filesize
96KB

Download
memory/2828-47-0x0000000002090000-0x00000000020A0000-memory.dmp

Filesize
64KB

Download
memory/2896-10-0x000007FEF5C20000-0x000007FEF65BD000-memory.dmp

Filesize
9.6MB

Download
memory/2896-17-0x000007FEF5C20000-0x000007FEF65BD000-memory.dmp

Filesize
9.6MB

Download