orcus | b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
13-01-2025 03:13

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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
behavioral1/files/0x0008000000016fe5-39.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016fe5-39.dat	orcus
behavioral1/memory/1456-43-0x0000000000DF0000-0x0000000000EDA000-memory.dmp	orcus

Executes dropped EXE 6 IoCs

pid	Process
2684	WindowsInput.exe
1604	WindowsInput.exe
1456	winzip.exe
1448	winzip.exe
1440	winzip.exe
1976	winzip.exe

Loads dropped DLL 1 IoCs

pid	Process
1440	winzip.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

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
1976	winzip.exe
1976	winzip.exe
1456	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe
1976	winzip.exe
1456	winzip.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1456	winzip.exe
Token: SeDebugPrivilege	1440	winzip.exe
Token: SeDebugPrivilege	1976	winzip.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1456	winzip.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2852	2848	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	30
PID 2848 wrote to memory of 2852	2848	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	30
PID 2848 wrote to memory of 2852	2848	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	30
PID 2852 wrote to memory of 2752	2852	csc.exe	32
PID 2852 wrote to memory of 2752	2852	csc.exe	32
PID 2852 wrote to memory of 2752	2852	csc.exe	32
PID 2848 wrote to memory of 2684	2848	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	33
PID 2848 wrote to memory of 2684	2848	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	33
PID 2848 wrote to memory of 2684	2848	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	33
PID 2848 wrote to memory of 1456	2848	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	35
PID 2848 wrote to memory of 1456	2848	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	35
PID 2848 wrote to memory of 1456	2848	b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe	35
PID 2356 wrote to memory of 1448	2356	taskeng.exe	37
PID 2356 wrote to memory of 1448	2356	taskeng.exe	37
PID 2356 wrote to memory of 1448	2356	taskeng.exe	37
PID 1456 wrote to memory of 1440	1456	winzip.exe	38
PID 1456 wrote to memory of 1440	1456	winzip.exe	38
PID 1456 wrote to memory of 1440	1456	winzip.exe	38
PID 1456 wrote to memory of 1440	1456	winzip.exe	38
PID 1440 wrote to memory of 1976	1440	winzip.exe	39
PID 1440 wrote to memory of 1976	1440	winzip.exe	39
PID 1440 wrote to memory of 1976	1440	winzip.exe	39
PID 1440 wrote to memory of 1976	1440	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\b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe
"C:\Users\Admin\AppData\Local\Temp\b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6N.exe"
1⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2848
- 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\medmod-z.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2852
- - 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\RES3DBD.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC3DBC.tmp"
    3⤵
    PID:2752
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:2684
- 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:1456
- - C:\Users\Admin\AppData\Local\Temp\winzip.exe
    "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /launchSelfAndExit "C:\Program Files\winzip data\winzip.exe" 1456 /protectFile
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1440
  - - C:\Users\Admin\AppData\Local\Temp\winzip.exe
      "C:\Users\Admin\AppData\Local\Temp\winzip.exe" /watchProcess "C:\Program Files\winzip data\winzip.exe" 1456 "/protectFile"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1976

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:1604

C:\Windows\system32\taskeng.exe
taskeng.exe {D96BE172-75DD-4354-A3B8-5D3D9E03253B} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Program Files\winzip data\winzip.exe
  "C:\Program Files\winzip data\winzip.exe"
  2⤵
  - Executes dropped EXE
  PID:1448

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
dc9238b0734a5ef282d6a1497fc5e730

SHA1
2cc7368ab3de9f2b8eb33c60d8e8592bc96c16fb

SHA256
b505f6e7fafa18347c284328726d1bb3060b79eabd93e5abd4e818304ad305d6

SHA512
5cb90f8940e82557feb182861ccd59168c1e75e9eb9cf3a83541701503bee31ddecdaf4f61db275572cbfcb07c2ba7c85817e4226e13a836153bd9b435b44900

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES3DBD.tmp

Filesize
1KB

MD5
fb2d1ad2cb40fe16eac29d59e434ef7e

SHA1
34187981655531e5c87bb6e17a86a5674072fbdd

SHA256
f687d7fba1134d6c9c130f4284f459353719c223a2c930e64322693f65dd25b4

SHA512
d7a63665cd4794d1af46fc32a03cc5af351972e5f5022430d8bb09228ce15e9958c376caf81856660d5b75583163db04bde0988e87eb014b46d9a3f6a5bd5e86

Download Submit
C:\Users\Admin\AppData\Local\Temp\medmod-z.dll

Filesize
76KB

MD5
110a395d4a32b648267cbdd3abaef982

SHA1
38259e2e2e5709392a6b9cc9fabc29b7c976e494

SHA256
59474a7c1fb9528e1c75783246985a7fac08c8b6804c5f5be927d06cb9d133e9

SHA512
2f4481aae9fb002d6de6d966a51eb669584daed09090f9e74631cc778f1596d17e383a300240e26da3aa0be9896d1db646edd2c12f35ab3a1b77b71de0380b8a

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\CSC3DBC.tmp

Filesize
676B

MD5
7730887fcbb4f70ffcb752f259df67c9

SHA1
3cb701f3a38e474ed994940237c182a6a801e5db

SHA256
ff93de464b5478d66231e11e9cc6803b23ad99724b370814cb113636c16606d7

SHA512
97a788a1d6f2bf334687070ce678c56e2fe00b22ebfac8c5b9d47dee4aa1d994f8f24e133cbc944974cb46474b1a6b338ab06497d557097556cab88729119681

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\medmod-z.0.cs

Filesize
208KB

MD5
250321226bbc2a616d91e1c82cb4ab2b

SHA1
7cffd0b2e9c842865d8961386ab8fcfac8d04173

SHA256
ef2707f83a0c0927cfd46b115641b9cae52a41123e4826515b9eeb561785218d

SHA512
bda59ca04cdf254f837f2cec6da55eff5c3d2af00da66537b9ebaa3601c502ae63772f082fd12663b63d537d2e03efe87a3b5746ef25e842aaf1c7d88245b4e1

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\medmod-z.cmdline

Filesize
349B

MD5
c9fe05243dda28bc8bb4c4684669df2b

SHA1
d7ee9f9eeedac8da8c8a716d5584cef916bc283f

SHA256
c433009924cfe64fb0be236f2875522217248a5c8de1186be8dbe83a31e30733

SHA512
0dac4187c7af02f09abf8dc71e72f40fb5aef66fbe6891e486e4326392e3627fe89497f824e95e95a6e7d064e65ae627a6dd9e1c91aad453274d9e36b97e504e

Download Submit
memory/1440-58-0x0000000001230000-0x0000000001238000-memory.dmp

Filesize
32KB

Download
memory/1456-48-0x0000000000BF0000-0x0000000000C00000-memory.dmp

Filesize
64KB

Download
memory/1456-47-0x0000000000C80000-0x0000000000C98000-memory.dmp

Filesize
96KB

Download
memory/1456-46-0x0000000000DA0000-0x0000000000DEE000-memory.dmp

Filesize
312KB

Download
memory/1456-45-0x0000000000290000-0x00000000002A2000-memory.dmp

Filesize
72KB

Download
memory/1456-43-0x0000000000DF0000-0x0000000000EDA000-memory.dmp

Filesize
936KB

Download
memory/1604-33-0x0000000000280000-0x000000000028C000-memory.dmp

Filesize
48KB

Download
memory/2684-29-0x0000000001290000-0x000000000129C000-memory.dmp

Filesize
48KB

Download
memory/2848-19-0x0000000000860000-0x0000000000876000-memory.dmp

Filesize
88KB

Download
memory/2848-1-0x00000000023F0000-0x000000000244C000-memory.dmp

Filesize
368KB

Download
memory/2848-3-0x000007FEF5100000-0x000007FEF5A9D000-memory.dmp

Filesize
9.6MB

Download
memory/2848-44-0x000007FEF5100000-0x000007FEF5A9D000-memory.dmp

Filesize
9.6MB

Download
memory/2848-4-0x000007FEF5100000-0x000007FEF5A9D000-memory.dmp

Filesize
9.6MB

Download
memory/2848-21-0x0000000000390000-0x00000000003A2000-memory.dmp

Filesize
72KB

Download
memory/2848-2-0x0000000000280000-0x000000000028E000-memory.dmp

Filesize
56KB

Download
memory/2848-0-0x000007FEF53BE000-0x000007FEF53BF000-memory.dmp

Filesize
4KB

Download
memory/2852-10-0x000007FEF5100000-0x000007FEF5A9D000-memory.dmp

Filesize
9.6MB

Download
memory/2852-17-0x000007FEF5100000-0x000007FEF5A9D000-memory.dmp

Filesize
9.6MB

Download