General
- Target MasonClient.exe
- Size 91KB
- Sample260820-psaq4acl8s
- SHA256 6692c7c89786abee2e282eb91ae66d2f01097ac7c78f1c506594eeb7ccd54012
- MD5 d14c3361f874b4e0e6215c121ecd1dc2
- SHA1 42a5985671efe04f9f033f34d1a39eda6081d5e7
- SHA512 b1e7da495fb99f1ab2e1aa912f0b7df5d6c9c6de07681985173b0a31b630a9bfcd689f79733925f4d275ea09157fcfe71f96cc9e6150f630f74f406dda5505d6
- SSDEEP 1536:nBsuei8APJvGO7nuDhMPku8ouWrIQuaE/nQmLWUJWvT9K5n39vJIGmeUcUn:BsuewJeKPku8ArLuasnKmWvT9OnNvJIp
- TLSH T11B93F142A63C965CFC52B0732082413498A465AE3FFC639B5B68DF0407EDAA94F5CDDC
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
MasonClient.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
MasonClient.exe
Resource
win10ltsc2021-20260513-en
Behavioral task
behavioral3
Sample
MasonClient.exe
Resource
win11-20260513-en
Behavioral task
behavioral4
Sample
MasonClient.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Extracted
-
neptunerat
-
g0zpydlusm.localto.net:8565
-
filename
USB.exe
-
group
MasonGroup
-
key
3YvAEdUHcPLh6ds3
-
rat_name
MasonRAT
Targets
-
- Target MasonClient.exe
- Size 91KB
- SHA256 6692c7c89786abee2e282eb91ae66d2f01097ac7c78f1c506594eeb7ccd54012
- MD5 d14c3361f874b4e0e6215c121ecd1dc2
- SHA1 42a5985671efe04f9f033f34d1a39eda6081d5e7
- SHA512 b1e7da495fb99f1ab2e1aa912f0b7df5d6c9c6de07681985173b0a31b630a9bfcd689f79733925f4d275ea09157fcfe71f96cc9e6150f630f74f406dda5505d6
- SSDEEP 1536:nBsuei8APJvGO7nuDhMPku8ouWrIQuaE/nQmLWUJWvT9K5n39vJIGmeUcUn:BsuewJeKPku8ArLuasnKmWvT9OnNvJIp
- TLSH T11B93F142A63C965CFC52B0732082413498A465AE3FFC639B5B68DF0407EDAA94F5CDDC
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Detects DonutLoader
-
Detects NeptuneRAT stealer
-
Family: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
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Badlisted process makes network request
Network request originating from process or tool commonly abused by malware.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Executes dropped EXE
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Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.