orcus | d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4

Analysis

max time kernel
140s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
28-07-2024 01:01

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General

Target

d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe
Size

3.0MB
MD5

a904538c9a37ec92bd9f152e48d70629
SHA1

a9b87b357b3cc41c01ab33ea04281babf1d80d56
SHA256

d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4
SHA512

34abc573e2f405fd036ea027ee979993a771f4be888075741b6033777769e1d2c30102336eb7df555a7b042f2e8c2ee8cf908a546e99b97638f07c6189231bfd
SSDEEP

49152:Cs7p1EZKMnkmWg8LX5prviYDyKS5AypQxbRQAo9JnCmpau/nRFfjI7L0qb:CsHTPJg8z1mKnypSbRxo9JCm

Score

10^/10

orcus fixrat credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

FixRat

31.44.184.52:54370

Mutex

sudo_7kz7er6675f4d9qdspyd5zzhxt61n0f2

Attributes

autostart_method
Disable
enable_keylogger
false
install_path
%appdata%\securecdn\publiccdn.exe
reconnect_delay
10000
registry_keyname
Sudik
taskscheduler_taskname
sudik
watchdog_path
AppData\aga.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

Processes:

resource	yara_rule
behavioral2/files/0x0002000000022a96-13.dat	family_orcus

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Orcurs Rat Executable 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2692-1-0x0000000000AE0000-0x0000000000DDE000-memory.dmp	orcus
behavioral2/files/0x0002000000022a96-13.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

Processes:

d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe

Executes dropped EXE 6 IoCs

Processes:

publiccdn.exepubliccdn.exepubliccdn.exepubliccdn.exepubliccdn.exepubliccdn.exe

pid	Process
4588	publiccdn.exe
4600	publiccdn.exe
3660	publiccdn.exe
996	publiccdn.exe
552	publiccdn.exe
3448	publiccdn.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

publiccdn.exepubliccdn.exepubliccdn.exe

description	pid	Process	procid_target
PID 4588 set thread context of 4016	4588	publiccdn.exe	89
PID 4600 set thread context of 2368	4600	publiccdn.exe	94
PID 3660 set thread context of 1308	3660	publiccdn.exe	98

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 10 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

Processes:

publiccdn.exepubliccdn.exepubliccdn.exepubliccdn.exed73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exeinstallutil.exepubliccdn.exeregasm.exepubliccdn.exeinstallutil.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	publiccdn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	publiccdn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	publiccdn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	publiccdn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	installutil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	publiccdn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	publiccdn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	installutil.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exepubliccdn.exepubliccdn.exepubliccdn.exeinstallutil.exe

pid	Process
2692	d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe
4588	publiccdn.exe
4588	publiccdn.exe
4600	publiccdn.exe
4600	publiccdn.exe
4600	publiccdn.exe
4600	publiccdn.exe
3660	publiccdn.exe
3660	publiccdn.exe
3660	publiccdn.exe
3660	publiccdn.exe
4016	installutil.exe
4016	installutil.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exepubliccdn.exepubliccdn.exepubliccdn.exeinstallutil.exe

description	pid	Process
Token: SeDebugPrivilege	2692	d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe
Token: SeDebugPrivilege	4588	publiccdn.exe
Token: SeDebugPrivilege	4600	publiccdn.exe
Token: SeDebugPrivilege	3660	publiccdn.exe
Token: SeDebugPrivilege	4016	installutil.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exepubliccdn.exepubliccdn.exepubliccdn.exe

description	pid	Process	procid_target
PID 2692 wrote to memory of 4588	2692	d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe	87
PID 2692 wrote to memory of 4588	2692	d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe	87
PID 2692 wrote to memory of 4588	2692	d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe	87
PID 4588 wrote to memory of 4016	4588	publiccdn.exe	89
PID 4588 wrote to memory of 4016	4588	publiccdn.exe	89
PID 4588 wrote to memory of 4016	4588	publiccdn.exe	89
PID 4588 wrote to memory of 4016	4588	publiccdn.exe	89
PID 4588 wrote to memory of 4016	4588	publiccdn.exe	89
PID 4588 wrote to memory of 4016	4588	publiccdn.exe	89
PID 4588 wrote to memory of 4016	4588	publiccdn.exe	89
PID 4588 wrote to memory of 4016	4588	publiccdn.exe	89
PID 4600 wrote to memory of 4712	4600	publiccdn.exe	91
PID 4600 wrote to memory of 4712	4600	publiccdn.exe	91
PID 4600 wrote to memory of 4712	4600	publiccdn.exe	91
PID 4600 wrote to memory of 2368	4600	publiccdn.exe	94
PID 4600 wrote to memory of 2368	4600	publiccdn.exe	94
PID 4600 wrote to memory of 2368	4600	publiccdn.exe	94
PID 4600 wrote to memory of 2368	4600	publiccdn.exe	94
PID 4600 wrote to memory of 2368	4600	publiccdn.exe	94
PID 4600 wrote to memory of 2368	4600	publiccdn.exe	94
PID 4600 wrote to memory of 2368	4600	publiccdn.exe	94
PID 4600 wrote to memory of 2368	4600	publiccdn.exe	94
PID 3660 wrote to memory of 3444	3660	publiccdn.exe	97
PID 3660 wrote to memory of 3444	3660	publiccdn.exe	97
PID 3660 wrote to memory of 3444	3660	publiccdn.exe	97
PID 3660 wrote to memory of 1308	3660	publiccdn.exe	98
PID 3660 wrote to memory of 1308	3660	publiccdn.exe	98
PID 3660 wrote to memory of 1308	3660	publiccdn.exe	98
PID 3660 wrote to memory of 1308	3660	publiccdn.exe	98
PID 3660 wrote to memory of 1308	3660	publiccdn.exe	98
PID 3660 wrote to memory of 1308	3660	publiccdn.exe	98
PID 3660 wrote to memory of 1308	3660	publiccdn.exe	98
PID 3660 wrote to memory of 1308	3660	publiccdn.exe	98

C:\Users\Admin\AppData\Local\Temp\d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe
"C:\Users\Admin\AppData\Local\Temp\d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
  "C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4588
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4016

C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4600
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  PID:4712
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2368

C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3660
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
  2⤵
  PID:3444
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1308

C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:996

C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:552

C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3448

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\publiccdn.exe.log

Filesize
1KB

MD5
663b8d5469caa4489d463aa9bc18124f

SHA1
e57123a7d969115853ea631a3b33826335025d28

SHA256
7b4fa505452f0b8ac74bb31f5a03b13342836318018fb18d224ae2ff11b1a7e8

SHA512
45e373295125a629fcc0b19609608d969c9106514918bfac5d6b8e340e407434577b825741b8fa6a043c8f3f5c1a030ba8857da5f4e8ef15a551ce3c5fe03b55

Download Submit
C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe

Filesize
3.0MB

MD5
a904538c9a37ec92bd9f152e48d70629

SHA1
a9b87b357b3cc41c01ab33ea04281babf1d80d56

SHA256
d73f2f3fa297db9ec498c7d178e3734415e11d3024f8eb2ea5aece6f006f9ec4

SHA512
34abc573e2f405fd036ea027ee979993a771f4be888075741b6033777769e1d2c30102336eb7df555a7b042f2e8c2ee8cf908a546e99b97638f07c6189231bfd

Download Submit
C:\Users\Admin\AppData\Roaming\securecdn\publiccdn.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/2692-0-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/2692-1-0x0000000000AE0000-0x0000000000DDE000-memory.dmp

Filesize
3.0MB

Download
memory/2692-2-0x0000000003170000-0x000000000317E000-memory.dmp

Filesize
56KB

Download
memory/2692-3-0x0000000005A40000-0x0000000005A9C000-memory.dmp

Filesize
368KB

Download
memory/2692-4-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/2692-5-0x0000000006130000-0x00000000066D4000-memory.dmp

Filesize
5.6MB

Download
memory/2692-6-0x0000000005B80000-0x0000000005C12000-memory.dmp

Filesize
584KB

Download
memory/2692-7-0x0000000005A30000-0x0000000005A42000-memory.dmp

Filesize
72KB

Download
memory/2692-23-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4016-31-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4016-43-0x00000000060F0000-0x00000000060FA000-memory.dmp

Filesize
40KB

Download
memory/4016-57-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4016-56-0x0000000007AA0000-0x0000000007AF0000-memory.dmp

Filesize
320KB

Download
memory/4016-55-0x0000000006EA0000-0x0000000006EAE000-memory.dmp

Filesize
56KB

Download
memory/4016-54-0x0000000007640000-0x0000000007802000-memory.dmp

Filesize
1.8MB

Download
memory/4016-33-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4016-53-0x0000000006CD0000-0x0000000006DDA000-memory.dmp

Filesize
1.0MB

Download
memory/4016-52-0x0000000006B40000-0x0000000006B8C000-memory.dmp

Filesize
304KB

Download
memory/4016-41-0x0000000005440000-0x0000000005458000-memory.dmp

Filesize
96KB

Download
memory/4016-42-0x0000000005460000-0x0000000005470000-memory.dmp

Filesize
64KB

Download
memory/4016-51-0x0000000006B00000-0x0000000006B3C000-memory.dmp

Filesize
240KB

Download
memory/4016-46-0x0000000006990000-0x00000000069F6000-memory.dmp

Filesize
408KB

Download
memory/4016-49-0x0000000007020000-0x0000000007638000-memory.dmp

Filesize
6.1MB

Download
memory/4016-50-0x0000000006AA0000-0x0000000006AB2000-memory.dmp

Filesize
72KB

Download
memory/4588-26-0x0000000005010000-0x0000000005022000-memory.dmp

Filesize
72KB

Download
memory/4588-24-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4588-32-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4588-25-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4588-28-0x0000000005E90000-0x0000000005F2C000-memory.dmp

Filesize
624KB

Download
memory/4588-27-0x0000000005650000-0x000000000569E000-memory.dmp

Filesize
312KB

Download
memory/4600-36-0x0000000005DE0000-0x0000000005DF2000-memory.dmp

Filesize
72KB

Download