orcus | 43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456

General

Target

43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456.exe
Size

934KB
MD5

b4f9da6bb3d285ca5434e46cdf810f9a
SHA1

1ce3fa7613d043cabf11ef720a2eaaf44bec515f
SHA256

43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456
SHA512

44a91e305230853b20a40af4c3635e1a84b6862759f511be24b9102eb549179bcfd7c5656cfa22e7dd602f8f9ebdf754638c0f2fd1ca99e067841d78ac3abc1e
SSDEEP

12288:v0XCGPSX0zbyD+ndg+QCImGYUl9qyzlkE2kUNCcy782OV5ivMprmStz07dG1lFlL:3SO4MROxnFBLrrcI0AilFEvxHjVQ4Z

Score

10^/10

orcus persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

s7vety-47274.portmap.host:47274

Mutex

9b66c2abf6a74042aa75c51f01b5b0dc

Attributes

autostart_method
Registry
enable_keylogger
false
install_path
%temp%\Windows Updater\updateclient.exe
reconnect_delay
10000
registry_keyname
WindowsUpdater
taskscheduler_taskname
Orcus
watchdog_path
AppData\OrcusWatchdog.exe

Signatures

Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
rat spyware stealer orcus

Orcus main payload 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023432-44.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/memory/1004-0-0x0000000000980000-0x0000000000A70000-memory.dmp	orcus
behavioral2/files/0x0007000000023432-44.dat	orcus

Checks computer location settings 2 TTPs 1 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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456.exe

Executes dropped EXE 4 IoCs

pid	Process
4648	WindowsInput.exe
4624	WindowsInput.exe
4340	updateclient.exe
4736	updateclient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsUpdater = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Windows Updater\\updateclient.exe\""	updateclient.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456.exe
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe	43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4340	updateclient.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1004 wrote to memory of 4648	1004	43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456.exe	84
PID 1004 wrote to memory of 4648	1004	43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456.exe	84
PID 1004 wrote to memory of 4340	1004	43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456.exe	90
PID 1004 wrote to memory of 4340	1004	43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456.exe	90

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\43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456.exe
"C:\Users\Admin\AppData\Local\Temp\43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1004
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:4648
- C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe
  "C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  PID:4340

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:4624

C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe
"C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe"
1⤵
- Executes dropped EXE
PID:4736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe

Filesize
934KB

MD5
b4f9da6bb3d285ca5434e46cdf810f9a

SHA1
1ce3fa7613d043cabf11ef720a2eaaf44bec515f

SHA256
43bb7f5aabd3203c6fa4f65ed37c3d2d4a9ac7138439f1fdebdf3f73c3275456

SHA512
44a91e305230853b20a40af4c3635e1a84b6862759f511be24b9102eb549179bcfd7c5656cfa22e7dd602f8f9ebdf754638c0f2fd1ca99e067841d78ac3abc1e

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
memory/1004-0-0x0000000000980000-0x0000000000A70000-memory.dmp

Filesize
960KB

Download
memory/1004-2-0x0000000002C50000-0x0000000002C5E000-memory.dmp

Filesize
56KB

Download
memory/1004-3-0x00007FF897ED0000-0x00007FF898991000-memory.dmp

Filesize
10.8MB

Download
memory/1004-1-0x000000001B550000-0x000000001B5AC000-memory.dmp

Filesize
368KB

Download
memory/1004-4-0x000000001B610000-0x000000001B620000-memory.dmp

Filesize
64KB

Download
memory/1004-5-0x000000001B5D0000-0x000000001B5E2000-memory.dmp

Filesize
72KB

Download
memory/1004-6-0x000000001B5C0000-0x000000001B5C8000-memory.dmp

Filesize
32KB

Download
memory/1004-48-0x00007FF897ED0000-0x00007FF898991000-memory.dmp

Filesize
10.8MB

Download
memory/4340-63-0x000000001B4F0000-0x000000001B500000-memory.dmp

Filesize
64KB

Download
memory/4340-54-0x000000001B450000-0x000000001B468000-memory.dmp

Filesize
96KB

Download
memory/4340-52-0x00000000029A0000-0x00000000029EE000-memory.dmp

Filesize
312KB

Download
memory/4340-51-0x0000000001030000-0x0000000001042000-memory.dmp

Filesize
72KB

Download
memory/4340-49-0x00007FF897ED0000-0x00007FF898991000-memory.dmp

Filesize
10.8MB

Download
memory/4340-56-0x000000001B470000-0x000000001B480000-memory.dmp

Filesize
64KB

Download
memory/4340-50-0x000000001B4F0000-0x000000001B500000-memory.dmp

Filesize
64KB

Download
memory/4340-61-0x00007FF897ED0000-0x00007FF898991000-memory.dmp

Filesize
10.8MB

Download
memory/4624-31-0x000000001A520000-0x000000001A530000-memory.dmp

Filesize
64KB

Download
memory/4624-60-0x00007FF897ED0000-0x00007FF898991000-memory.dmp

Filesize
10.8MB

Download
memory/4624-30-0x00007FF897ED0000-0x00007FF898991000-memory.dmp

Filesize
10.8MB

Download
memory/4624-62-0x000000001A520000-0x000000001A530000-memory.dmp

Filesize
64KB

Download
memory/4624-32-0x000000001AA40000-0x000000001AB4A000-memory.dmp

Filesize
1.0MB

Download
memory/4648-23-0x0000000002480000-0x00000000024BC000-memory.dmp

Filesize
240KB

Download
memory/4648-22-0x0000000000B50000-0x0000000000B62000-memory.dmp

Filesize
72KB

Download
memory/4648-24-0x0000000000B70000-0x0000000000B80000-memory.dmp

Filesize
64KB

Download
memory/4648-21-0x00007FF897ED0000-0x00007FF898991000-memory.dmp

Filesize
10.8MB

Download
memory/4648-28-0x00007FF897ED0000-0x00007FF898991000-memory.dmp

Filesize
10.8MB

Download
memory/4648-20-0x0000000000370000-0x000000000037C000-memory.dmp

Filesize
48KB

Download
memory/4736-55-0x00007FF897ED0000-0x00007FF898991000-memory.dmp

Filesize
10.8MB

Download
memory/4736-57-0x0000000000BF0000-0x0000000000C00000-memory.dmp

Filesize
64KB

Download
memory/4736-59-0x00007FF897ED0000-0x00007FF898991000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads