rhadamanthys | 8b7e4a85e6ea41caee36f287430d45350f3be89c3b616e28bb520cd0b6d69496

General

Target

PDF Editor/Setup.exe
Size

2.2MB
MD5

57eec9f4c439f340671dacfcf681d57e
SHA1

d85ce1c62994c82d9c8ffcb91a1853a8c6214826
SHA256

140f170d8b83611cb8897164be174495dc51961dc34fbccc9a714917cc341b8f
SHA512

e105343b60bcfedd35d2b304f4d28f23e594db3a4f6b2e4ee00ad9240a34653150320514eca62c3336196e27ce2e6b17032818d34686602815aea6caf8a3e842
SSDEEP

24576:yEG5HvVgakU0978UD+xESC+j5EJlTQNEux5PvuOEVi9RPXSqvmoh1WX/S4G75wAc:yxyCnUCg+kF+emEOjWuwP

Score

10^/10

rhadamanthys collection discovery evasion spyware stealer trojan

Malware Config

Signatures

Detect rhadamanthys stealer shellcode 3 IoCs

resource	yara_rule
behavioral2/memory/4924-144-0x0000000002330000-0x000000000234D000-memory.dmp	family_rhadamanthys
behavioral2/memory/4924-145-0x00000000025E0000-0x00000000035E0000-memory.dmp	family_rhadamanthys
behavioral2/memory/4924-151-0x0000000002330000-0x000000000234D000-memory.dmp	family_rhadamanthys

Rhadamanthys
Rhadamanthys is an info stealer written in C++ first seen in August 2022.
stealer rhadamanthys

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Setup.exe

Blocklisted process makes network request 1 IoCs

flow	pid	Process
21	4144	rundll32.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Setup.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Setup.exe

Loads dropped DLL 1 IoCs

pid	Process
4144	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\10.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\11.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\12.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	rundll32.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Setup.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
4924	AppLaunch.exe
4924	AppLaunch.exe
4924	AppLaunch.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3444 set thread context of 4924	3444	Setup.exe	81

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3444 wrote to memory of 4924	3444	Setup.exe	81
PID 3444 wrote to memory of 4924	3444	Setup.exe	81
PID 3444 wrote to memory of 4924	3444	Setup.exe	81
PID 3444 wrote to memory of 4924	3444	Setup.exe	81
PID 3444 wrote to memory of 4924	3444	Setup.exe	81
PID 4924 wrote to memory of 4144	4924	AppLaunch.exe	82
PID 4924 wrote to memory of 4144	4924	AppLaunch.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	rundll32.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\PDF Editor\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\PDF Editor\Setup.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of WriteProcessMemory
  PID:4924
- - C:\Windows\system32\rundll32.exe
    "C:\Users\Admin\AppData\Roaming\vcredist_e5683ac.dll",Options_RunDLL 0800cc00-0040-04d0-0e67-2d095d587328
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - Accesses Microsoft Outlook profiles
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - outlook_office_path
    - outlook_win_path
    PID:4144

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

4

T1012

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\vcredist_e5683ac.dll

Filesize
53KB

MD5
d4819f34c98e00fcff4f6b77d3b28282

SHA1
67deabbb185c2b5605957e487802aafe9039f923

SHA256
d31a57e03b83291ed81c1d3f054b001b261b103b39b7a8430109c32d8de5d8bd

SHA512
3d7c27062b7d3e93d629c7a0eb8dfcdd2d7d2154564d3ab0b4e5d527b177829fcb52ca3c7b5b430d58de22fe27922d7e589c201039c355d7203686a7412f191a

Download Submit
C:\Users\Admin\AppData\Roaming\vcredist_e5683ac.dll

Filesize
53KB

MD5
d4819f34c98e00fcff4f6b77d3b28282

SHA1
67deabbb185c2b5605957e487802aafe9039f923

SHA256
d31a57e03b83291ed81c1d3f054b001b261b103b39b7a8430109c32d8de5d8bd

SHA512
3d7c27062b7d3e93d629c7a0eb8dfcdd2d7d2154564d3ab0b4e5d527b177829fcb52ca3c7b5b430d58de22fe27922d7e589c201039c355d7203686a7412f191a

Download Submit
memory/3444-142-0x0000000000580000-0x00000000007C0000-memory.dmp

Filesize
2.2MB

Download
memory/3444-133-0x0000000000580000-0x00000000007C0000-memory.dmp

Filesize
2.2MB

Download
memory/3444-132-0x0000000000581000-0x0000000000585000-memory.dmp

Filesize
16KB

Download
memory/4144-150-0x00007FF4B45E0000-0x00007FF4B46DA000-memory.dmp

Filesize
1000KB

Download
memory/4144-149-0x000001AD38430000-0x000001AD38437000-memory.dmp

Filesize
28KB

Download
memory/4144-152-0x00007FF4B45E0000-0x00007FF4B46DA000-memory.dmp

Filesize
1000KB

Download
memory/4144-153-0x00007FFCD4B60000-0x00007FFCD4B72000-memory.dmp

Filesize
72KB

Download
memory/4924-144-0x0000000002330000-0x000000000234D000-memory.dmp

Filesize
116KB

Download
memory/4924-145-0x00000000025E0000-0x00000000035E0000-memory.dmp

Filesize
16.0MB

Download
memory/4924-141-0x00000000004C0000-0x00000000004F9000-memory.dmp

Filesize
228KB

Download
memory/4924-135-0x00000000004C0000-0x00000000004F9000-memory.dmp

Filesize
228KB

Download
memory/4924-151-0x0000000002330000-0x000000000234D000-memory.dmp

Filesize
116KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads