Overview
overview
10Static
static
10MasonClient.exe
windows10-ltsc_2021-x64
10MasonClient.exe
windows10-2004-x64
10MasonClient.exe
windows11-21h2-x64
10MasonClient.exe
windows11-ltsc_2024-x64
10MasonClient.exe
ubuntu-22.04-amd64
MasonClient.exe
debian-9-armhf
MasonClient.exe
debian-9-mips
MasonClient.exe
debian-9-mipsel
General
- Target MasonClient.exe
- Size 48KB
- Sample260915-v6pp3age99
- SHA256 0868ade302ddc24703049e4274d51c6f0295e4007ed4de11c910ee5a40f44ec0
- MD5 c69d483b5b57136159447f8e998417d1
- SHA1 f9c58a07086d9789acc66eca17e271fc8bf23b4c
- SHA512 ffbcea56a18b078a8674ee0725ea92f9312ab6c3409aff7d4d6460d60ec5c1c9cfffe1d0d71dd8dff6fe60e093fad216d7294eb00ca3ce2139085c61e9b0fc82
- SSDEEP 1536:9bk9niyiiwRejSyAy/FXyK5EijqkPJWemOrCkmrCkqrCkhrCkgrCkFDGEl1bya9C:9bkZiyiiwRejSyAy/FXyK5EijqkPJWe3
- TLSH T15B23F99DA7E54111DAEF9EF01CB3C201D3B1AAA78926C52F6CD801CB2757B9886017F3
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
MasonClient.exe
Resource
win10ltsc2021-20260911-en
Behavioral task
behavioral2
Sample
MasonClient.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral3
Sample
MasonClient.exe
Resource
win11-20260911-en
Behavioral task
behavioral4
Sample
MasonClient.exe
Resource
win11ltsc2024-20260911-en
Behavioral task
behavioral5
Sample
MasonClient.exe
Resource
ubuntu2204-amd64-20260513-en
Behavioral task
behavioral6
Sample
MasonClient.exe
Resource
debian9-armhf-20260513-en
Behavioral task
behavioral7
Sample
MasonClient.exe
Resource
debian9-mipsbe-20260513-en
Behavioral task
behavioral8
Sample
MasonClient.exe
Resource
debian9-mipsel-20260513-en
Malware Config
Extracted
-
neptunerat
-
89.190.158.37:911
-
filename
USB.exe
-
group
<Neptune>
-
key
3C62Outx4Gy0Zewc
-
rat_name
<123456789>
Targets
-
- Target MasonClient.exe
- Size 48KB
- SHA256 0868ade302ddc24703049e4274d51c6f0295e4007ed4de11c910ee5a40f44ec0
- MD5 c69d483b5b57136159447f8e998417d1
- SHA1 f9c58a07086d9789acc66eca17e271fc8bf23b4c
- SHA512 ffbcea56a18b078a8674ee0725ea92f9312ab6c3409aff7d4d6460d60ec5c1c9cfffe1d0d71dd8dff6fe60e093fad216d7294eb00ca3ce2139085c61e9b0fc82
- SSDEEP 1536:9bk9niyiiwRejSyAy/FXyK5EijqkPJWemOrCkmrCkqrCkhrCkgrCkFDGEl1bya9C:9bkZiyiiwRejSyAy/FXyK5EijqkPJWe3
- TLSH T15B23F99DA7E54111DAEF9EF01CB3C201D3B1AAA78926C52F6CD801CB2757B9886017F3
- MD5 SHA1 SHA512 SSDEEP TLSH
Score10/10Detect Xworm Payload
Detects NeptuneRAT stealer
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
Executes dropped EXE
Adds Run key to start application
Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1