Analysis
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max time kernel
130s -
max time network
140s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 03:23
Static task
static1
Behavioral task
behavioral1
Sample
RFQ_873821.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
RFQ_873821.exe
Resource
win10v2004-20220414-en
General
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Target
RFQ_873821.exe
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Size
836KB
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MD5
6cda2a931321f1fcdc0092a95d7c2b8a
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SHA1
4a1202631f6607e29f076b8d277f7101909c7a84
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SHA256
2b98c280d6a4bc8ab900831de9e049ed26f9db9ede66d0804b6581c8075ea1ee
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SHA512
3992f791bc8490cec3e7bfccdb9095367a54f2040e09efcdc6a6f1bbc2c33bb309b9a89b3379a5f53d74b9d81bc6f88f000268b6621ca5323b6f50afb1387e0c
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\19E979543A\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 1 IoCs
Processes:
resource yara_rule behavioral2/memory/1812-137-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger -
MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
Processes:
yara_rule masslogger_log_file -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
RFQ_873821.exeRFQ_873821.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation RFQ_873821.exe Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation RFQ_873821.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 18 IoCs
Processes:
RFQ_873821.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook RFQ_873821.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook RFQ_873821.exe Key queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook RFQ_873821.exe Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook RFQ_873821.exe Key queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook RFQ_873821.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook RFQ_873821.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 34 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
RFQ_873821.exedescription pid process target process PID 4264 set thread context of 1812 4264 RFQ_873821.exe RFQ_873821.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
RFQ_873821.exepid process 1812 RFQ_873821.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RFQ_873821.exepid process 1812 RFQ_873821.exe 1812 RFQ_873821.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RFQ_873821.exedescription pid process Token: SeDebugPrivilege 1812 RFQ_873821.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RFQ_873821.exepid process 1812 RFQ_873821.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
RFQ_873821.exedescription pid process target process PID 4264 wrote to memory of 2088 4264 RFQ_873821.exe schtasks.exe PID 4264 wrote to memory of 2088 4264 RFQ_873821.exe schtasks.exe PID 4264 wrote to memory of 2088 4264 RFQ_873821.exe schtasks.exe PID 4264 wrote to memory of 1812 4264 RFQ_873821.exe RFQ_873821.exe PID 4264 wrote to memory of 1812 4264 RFQ_873821.exe RFQ_873821.exe PID 4264 wrote to memory of 1812 4264 RFQ_873821.exe RFQ_873821.exe PID 4264 wrote to memory of 1812 4264 RFQ_873821.exe RFQ_873821.exe PID 4264 wrote to memory of 1812 4264 RFQ_873821.exe RFQ_873821.exe PID 4264 wrote to memory of 1812 4264 RFQ_873821.exe RFQ_873821.exe PID 4264 wrote to memory of 1812 4264 RFQ_873821.exe RFQ_873821.exe PID 4264 wrote to memory of 1812 4264 RFQ_873821.exe RFQ_873821.exe -
outlook_office_path 1 IoCs
Processes:
RFQ_873821.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe -
outlook_win_path 1 IoCs
Processes:
RFQ_873821.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RFQ_873821.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ_873821.exe"C:\Users\Admin\AppData\Local\Temp\RFQ_873821.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4264 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fRaDghVtXh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp35A1.tmp"2⤵
- Creates scheduled task(s)
PID:2088 -
C:\Users\Admin\AppData\Local\Temp\RFQ_873821.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:1812
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
507B
MD5ab4c71d3ff6255edd4e5c1e09540f49e
SHA122e06bf4e258741b5df918061871cba998c50cea
SHA2561690fec628f775dd3c3385b800eed126b37978ef2ffd592b024052724caafb5a
SHA5128fa7d0045796e6cda7c28e2b9a690ef550619828c1b5d0ebf8e8367aff4bf4d9f63121e5b4f199d30cb8006eb584c6767f4c59150749b8256dab9dd0ebd9f1af
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Filesize
1KB
MD54d2d8f20e988d6376178f44dad24f61a
SHA1efd9abf78c2c5d3e36260a1dd36421afd5e4c26c
SHA256cee42aa1e08eac8a789c1a3baf403f890dabb7c5c90a34b3cc2be6f794cf7de8
SHA51200f3dc3420e9389ab9b0dc272ee74361c65366ad448e536e75dc92886527b8fdeccb8e84c6d68c480b287c584347edbe87f3d089765f571e84528b73cdd65bef