Analysis
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max time kernel
151s -
max time network
156s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 01:51
Static task
static1
Behavioral task
behavioral1
Sample
AOS Neptune_028E.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
AOS Neptune_028E.exe
Resource
win10v2004-20220414-en
General
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Target
AOS Neptune_028E.exe
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Size
868KB
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MD5
6113ddc1b5a8d0984b259768fa03a681
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SHA1
269592ed330417b87d325174e1a6ae180b0a4243
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SHA256
cc9cd3fab00a7ca68c26cbf9bfcf691aafd004232149c04d2d082a1fe06b9f32
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SHA512
7ef9de0d9952af32c408040920cb94445b4c166d33a8c25247cd28b75bce6360511f7fdc0954082f43202e2ba9bf0c1ba448df67876808c949c016d08c19e289
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\8506BBE7FF\Log.txt
masslogger
Signatures
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MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
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MassLogger Main Payload 32 IoCs
Processes:
resource yara_rule behavioral1/memory/1724-61-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-62-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-63-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-64-0x00000000004ACB6E-mapping.dmp family_masslogger behavioral1/memory/1724-66-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-68-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-70-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-72-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-76-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-74-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-78-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-80-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-82-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-84-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-86-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-88-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-90-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-92-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-94-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-96-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-98-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-100-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-102-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-104-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-106-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-108-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-110-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-112-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-114-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-116-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-118-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger behavioral1/memory/1724-120-0x0000000000400000-0x00000000004B2000-memory.dmp family_masslogger -
MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
Processes:
yara_rule masslogger_log_file -
ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
Processes:
resource yara_rule behavioral1/memory/1860-57-0x0000000005E40000-0x0000000005EF8000-memory.dmp rezer0 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
AOS Neptune_028E.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\International\Geo\Nation AOS Neptune_028E.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs
Processes:
AOS Neptune_028E.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe Key created \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe Key opened \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe Key queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook AOS Neptune_028E.exe Key created \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook AOS Neptune_028E.exe Key queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook AOS Neptune_028E.exe Key created \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe Key queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook AOS Neptune_028E.exe Key created \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe Key queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe Key opened \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe Key created \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook AOS Neptune_028E.exe Key created \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook AOS Neptune_028E.exe Key opened \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe Key queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
AOS Neptune_028E.exedescription pid process target process PID 1860 set thread context of 1724 1860 AOS Neptune_028E.exe AOS Neptune_028E.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
AOS Neptune_028E.exepid process 1724 AOS Neptune_028E.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
AOS Neptune_028E.exepid process 1724 AOS Neptune_028E.exe 1724 AOS Neptune_028E.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
AOS Neptune_028E.exedescription pid process Token: SeDebugPrivilege 1724 AOS Neptune_028E.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
AOS Neptune_028E.exepid process 1724 AOS Neptune_028E.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
AOS Neptune_028E.exedescription pid process target process PID 1860 wrote to memory of 1724 1860 AOS Neptune_028E.exe AOS Neptune_028E.exe PID 1860 wrote to memory of 1724 1860 AOS Neptune_028E.exe AOS Neptune_028E.exe PID 1860 wrote to memory of 1724 1860 AOS Neptune_028E.exe AOS Neptune_028E.exe PID 1860 wrote to memory of 1724 1860 AOS Neptune_028E.exe AOS Neptune_028E.exe PID 1860 wrote to memory of 1724 1860 AOS Neptune_028E.exe AOS Neptune_028E.exe PID 1860 wrote to memory of 1724 1860 AOS Neptune_028E.exe AOS Neptune_028E.exe PID 1860 wrote to memory of 1724 1860 AOS Neptune_028E.exe AOS Neptune_028E.exe PID 1860 wrote to memory of 1724 1860 AOS Neptune_028E.exe AOS Neptune_028E.exe PID 1860 wrote to memory of 1724 1860 AOS Neptune_028E.exe AOS Neptune_028E.exe -
outlook_office_path 1 IoCs
Processes:
AOS Neptune_028E.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe -
outlook_win_path 1 IoCs
Processes:
AOS Neptune_028E.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AOS Neptune_028E.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\AOS Neptune_028E.exe"C:\Users\Admin\AppData\Local\Temp\AOS Neptune_028E.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1860 -
C:\Users\Admin\AppData\Local\Temp\AOS Neptune_028E.exe"{path}"2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1724