orcus | b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6

Analysis

max time kernel
119s
max time network
118s
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 03:13

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe
Size

915KB
MD5

dc9238b0734a5ef282d6a1497fc5e730
SHA1

2cc7368ab3de9f2b8eb33c60d8e8592bc96c16fb
SHA256

b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6
SHA512

5cb90f8940e82557feb182861ccd59168c1e75e9eb9cf3a83541701503bee31ddecdaf4f61db275572cbfcb07c2ba7c85817e4226e13a836153bd9b435b44900
SSDEEP

24576:IXqP4MROxnFD3h74S4xrZlI0AilFEvxHiNpx:IXjMiJ2rZlI0AilFEvxHiN

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/0x0008000000023cb4-54.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023cb4-54.dat	orcus
behavioral2/memory/1696-65-0x00000000002A0000-0x000000000038A000-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	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.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
836	WindowsInput.exe
3564	WindowsInput.exe
1696	winzip.exe
3576	winzip.exe
740	winzip.exe
4896	winzip.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.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	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe
File opened for modification	C:\Program Files\winzip data\winzip.exe	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe
File created	C:\Program Files\winzip data\winzip.exe.config	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe
File created	C:\Windows\assembly\Desktop.ini	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.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
1696	winzip.exe
1696	winzip.exe
1696	winzip.exe
4896	winzip.exe
4896	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe
1696	winzip.exe
4896	winzip.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1696	winzip.exe
Token: SeDebugPrivilege	740	winzip.exe
Token: SeDebugPrivilege	4896	winzip.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1696	winzip.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 3276	2440	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	86
PID 2440 wrote to memory of 3276	2440	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	86
PID 3276 wrote to memory of 4268	3276	csc.exe	88
PID 3276 wrote to memory of 4268	3276	csc.exe	88
PID 2440 wrote to memory of 836	2440	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	89
PID 2440 wrote to memory of 836	2440	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	89
PID 2440 wrote to memory of 1696	2440	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	91
PID 2440 wrote to memory of 1696	2440	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	91
PID 1696 wrote to memory of 740	1696	winzip.exe	94
PID 1696 wrote to memory of 740	1696	winzip.exe	94
PID 1696 wrote to memory of 740	1696	winzip.exe	94
PID 740 wrote to memory of 4896	740	winzip.exe	95
PID 740 wrote to memory of 4896	740	winzip.exe	95
PID 740 wrote to memory of 4896	740	winzip.exe	95

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\b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe
"C:\Users\Admin\AppData\Local\Temp\b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.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:2440
- 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\ymykbw1w.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3276
- - 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\RESDDED.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCDDEC.tmp"
    3⤵
    PID:4268
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:836
- 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:1696
- - C:\Users\Admin\AppData\Local\Temp\winzip.exe
    "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /launchSelfAndExit "C:\Program Files\winzip data\winzip.exe" 1696 /protectFile
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:740
  - - C:\Users\Admin\AppData\Local\Temp\winzip.exe
      "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /watchProcess "C:\Program Files\winzip data\winzip.exe" 1696 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4896

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:3564

C:\Program Files\winzip data\winzip.exe
"C:\Program Files\winzip data\winzip.exe"
1⤵
- Executes dropped EXE
PID:3576

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

Loading Replay Monitor...

Downloads

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

Filesize
915KB

MD5
dc9238b0734a5ef282d6a1497fc5e730

SHA1
2cc7368ab3de9f2b8eb33c60d8e8592bc96c16fb

SHA256
b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6

SHA512
5cb90f8940e82557feb182861ccd59168c1e75e9eb9cf3a83541701503bee31ddecdaf4f61db275572cbfcb07c2ba7c85817e4226e13a836153bd9b435b44900

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\RESDDED.tmp

Filesize
1KB

MD5
f17c76dbde38a34ad4a541023b3b7be8

SHA1
76954f7749647230c05517ee954384e92df8ddb0

SHA256
a48d7a011ce1c139632314f49a4a0886fb709c0aca419aa98ca70baf1dad2066

SHA512
9542db8043a04645cb891f063bb3cb679722a8a7a5a1417c6f1b6f512a97536be3ffeee894a3456c3da0be14fe069f736fb4f2ca5b03b85d903ab06681b5a597

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

Filesize
9KB

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

Download Submit
C:\Users\Admin\AppData\Local\Temp\ymykbw1w.dll

Filesize
76KB

MD5
26ed7dd2d36e3607fcc040f4e696eca7

SHA1
e1c5cab9d01cec3b0d11a4c599caec339b6d64ab

SHA256
b606662e27fe9b15f852175081073a9ef0797f8739025e90be692a6fa71d2f1b

SHA512
16e67ba49311507a195720394411c5051ffa71f554c2d4240c6dc86dffbf04040292a0eef95163dc172d04e041cf2d94b6a9381f4b453c81d3c578dc002df924

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\CSCDDEC.tmp

Filesize
676B

MD5
08834df5ee80e201d43fd90c00df7c6e

SHA1
834dd1e124e2242d4e65092a9560f24438f39d45

SHA256
3197f98628776e8e4eb62edcf418f5b2edd05d0ba5bf049d5362bc9469ff31d2

SHA512
0ef9e0fd05859a7ebbddd4816d7927d3bb8978f0c3bd614867abf2fa3026942be7d8eebbdf5f467227d90b6193944299567a440b06dea8150cf7930c96e98aa8

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\ymykbw1w.0.cs

Filesize
208KB

MD5
5adcb7ce5d7ce610cbe54782589576ec

SHA1
26f16111d34213b7e8e89b9aa52bb4ff0c93f823

SHA256
178efbba8b825b94770462f146752adb39d9769e943410b5cb9a728be7136318

SHA512
7638de8f2fab381fe53a8dacfce431e1b6ad250b02ac8f380b9d04a20f84952ead347a203c858044d54583f2464346f993a7d79bc2a41b2b05161fee065bc33b

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\ymykbw1w.cmdline

Filesize
349B

MD5
ebd57eddc86cb34cee429525db1d4397

SHA1
f33287c1d4516599a6a6fea12a6ebffc4b216d78

SHA256
6e2f6cc558700ff85269ccf564fef38f88ab489961f73dd89d71f68cc15f7d58

SHA512
a264540120d8a82caf366a680ce570e3ee7117035af23f0366d83fca83ab253d31081f2363b76f01e4e2011369a32ba4863ce477ad740a9af37b7eaa80455dee

Download Submit
memory/740-86-0x0000000000980000-0x0000000000988000-memory.dmp

Filesize
32KB

Download
memory/836-40-0x0000000000100000-0x000000000010C000-memory.dmp

Filesize
48KB

Download
memory/836-43-0x000000001AC00000-0x000000001AC3C000-memory.dmp

Filesize
240KB

Download
memory/836-42-0x0000000002290000-0x00000000022A2000-memory.dmp

Filesize
72KB

Download
memory/836-41-0x00007FFDF3F03000-0x00007FFDF3F05000-memory.dmp

Filesize
8KB

Download
memory/1696-67-0x000000001ADF0000-0x000000001AE02000-memory.dmp

Filesize
72KB

Download
memory/1696-65-0x00000000002A0000-0x000000000038A000-memory.dmp

Filesize
936KB

Download
memory/1696-72-0x000000001B630000-0x000000001B640000-memory.dmp

Filesize
64KB

Download
memory/1696-71-0x000000001B850000-0x000000001BA12000-memory.dmp

Filesize
1.8MB

Download
memory/1696-70-0x000000001B4E0000-0x000000001B4F8000-memory.dmp

Filesize
96KB

Download
memory/1696-68-0x000000001B340000-0x000000001B38E000-memory.dmp

Filesize
312KB

Download
memory/2440-23-0x000000001B8D0000-0x000000001B8E6000-memory.dmp

Filesize
88KB

Download
memory/2440-26-0x000000001C500000-0x000000001C520000-memory.dmp

Filesize
128KB

Download
memory/2440-1-0x00007FFDF71F0000-0x00007FFDF7B91000-memory.dmp

Filesize
9.6MB

Download
memory/2440-5-0x000000001B890000-0x000000001B89E000-memory.dmp

Filesize
56KB

Download
memory/2440-8-0x000000001C440000-0x000000001C4DC000-memory.dmp

Filesize
624KB

Download
memory/2440-66-0x00007FFDF71F0000-0x00007FFDF7B91000-memory.dmp

Filesize
9.6MB

Download
memory/2440-0-0x00007FFDF74A5000-0x00007FFDF74A6000-memory.dmp

Filesize
4KB

Download
memory/2440-2-0x000000001B790000-0x000000001B7EC000-memory.dmp

Filesize
368KB

Download
memory/2440-25-0x00000000010C0000-0x00000000010D2000-memory.dmp

Filesize
72KB

Download
memory/2440-7-0x00007FFDF71F0000-0x00007FFDF7B91000-memory.dmp

Filesize
9.6MB

Download
memory/2440-6-0x000000001BED0000-0x000000001C39E000-memory.dmp

Filesize
4.8MB

Download
memory/3276-21-0x00007FFDF71F0000-0x00007FFDF7B91000-memory.dmp

Filesize
9.6MB

Download
memory/3276-14-0x00007FFDF71F0000-0x00007FFDF7B91000-memory.dmp

Filesize
9.6MB

Download
memory/3564-48-0x000000001AD10000-0x000000001AE1A000-memory.dmp

Filesize
1.0MB

Download