General
- Target MasonClient.exe
- Size 48KB
- Sample261015-jgxtlahs8s
- SHA256 a51e00c83d8f08d17ed55c14e14c81259a0f63bc644030ec7d1c4c71787cb3e6
- MD5 baa6e1afa94cc37c6b65ae289a099aae
- SHA1 c586298d31779440a87d58391057834670bb1a3d
- SHA512 26c7b9959d6aff0d812e6a9437a72f2053ef622cb0a863b73bc64998c8fa4259d95a6244be4e761e1b0044a4f8ad99cb42cdc39e04f8805aea7342468c8d35be
- SSDEEP 768:fWFKfqlmeypcHHn8SI2a/OsygHi8b4njonwqxMLbExel7aRAQhLOzbMJ:fMKfqlmtCnn8SI2a/Oso8b4njglobExN
- TLSH T13F23C59CA3D80131E4BF66B21E77524893B0AA938467D79F7CC401DA2B16B95CB41EF3
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
MasonClient.exe
Resource
win10ltsc2021-20260911-en
Malware Config
Extracted
-
neptunerat
-
adawdwadwwadwaodkwaida-44171.portmap.host:44171
-
filename
USB.exe
-
group
MasonGroup
-
key
hM2miNXAoNqn8yPI
-
rat_name
MasonRAT
Targets
-
- Target MasonClient.exe
- Size 48KB
- SHA256 a51e00c83d8f08d17ed55c14e14c81259a0f63bc644030ec7d1c4c71787cb3e6
- MD5 baa6e1afa94cc37c6b65ae289a099aae
- SHA1 c586298d31779440a87d58391057834670bb1a3d
- SHA512 26c7b9959d6aff0d812e6a9437a72f2053ef622cb0a863b73bc64998c8fa4259d95a6244be4e761e1b0044a4f8ad99cb42cdc39e04f8805aea7342468c8d35be
- SSDEEP 768:fWFKfqlmeypcHHn8SI2a/OsygHi8b4njonwqxMLbExel7aRAQhLOzbMJ:fMKfqlmtCnn8SI2a/Oso8b4njglobExN
- TLSH T13F23C59CA3D80131E4BF66B21E77524893B0AA938467D79F7CC401DA2B16B95CB41EF3
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Detects NeptuneRAT stealer
-
Boot or Logon Autostart Execution: Active Setup
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
-
Manipulates Digital Signatures
Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to make their binary seem validly signed.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
-
Executes dropped EXE
-
Modifies system executable filetype association
-
Accesses Microsoft Outlook profiles
-
Adds Run key to start application
-
Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
-
Drops file in System32 directory
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Event Triggered Execution
2Change Default File Association
1Component Object Model Hijacking
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Event Triggered Execution
2Change Default File Association
1Component Object Model Hijacking
1Defense Evasion
Modify Registry
6Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1SIP and Trust Provider Hijacking
1