Analysis
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max time kernel
130s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 02:08
Static task
static1
Behavioral task
behavioral1
Sample
No42113-No42114.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
No42113-No42114.exe
Resource
win10v2004-20220414-en
General
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Target
No42113-No42114.exe
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Size
922KB
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MD5
f199ca0e897812a4218b91a293a7656b
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SHA1
0c9ea2d1c5c0254a278940c3b5ca7c25942b50fb
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SHA256
9300260a0aa311aa5e53e3c015ba7c63bb52ccb40c9841d4f566a6019143257d
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SHA512
3dd1ba3483ac0ce0d4202ebcf400ed0abd7a17f5e5e595fbff9f08606a72d21a3f752b3fff72e91c966a6db1edd44a0807681ec6e901927275a2f3441d2464d5
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\3B8E3C2477\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 6 IoCs
Processes:
resource yara_rule behavioral1/memory/1800-62-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/1800-63-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/1800-64-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/1800-65-0x00000000004A2DBE-mapping.dmp family_masslogger behavioral1/memory/1800-67-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/1800-69-0x0000000000400000-0x00000000004A8000-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/1016-56-0x00000000077B0000-0x000000000785E000-memory.dmp rezer0 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
No42113-No42114.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation No42113-No42114.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:
No42113-No42114.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook No42113-No42114.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook No42113-No42114.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook No42113-No42114.exe Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook No42113-No42114.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook No42113-No42114.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook No42113-No42114.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 api.ipify.org 5 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
No42113-No42114.exedescription pid process target process PID 1016 set thread context of 1800 1016 No42113-No42114.exe No42113-No42114.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:
No42113-No42114.exepid process 1800 No42113-No42114.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
No42113-No42114.exeNo42113-No42114.exepid process 1016 No42113-No42114.exe 1016 No42113-No42114.exe 1800 No42113-No42114.exe 1800 No42113-No42114.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
No42113-No42114.exeNo42113-No42114.exedescription pid process Token: SeDebugPrivilege 1016 No42113-No42114.exe Token: SeDebugPrivilege 1800 No42113-No42114.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
No42113-No42114.exepid process 1800 No42113-No42114.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
No42113-No42114.exedescription pid process target process PID 1016 wrote to memory of 1768 1016 No42113-No42114.exe schtasks.exe PID 1016 wrote to memory of 1768 1016 No42113-No42114.exe schtasks.exe PID 1016 wrote to memory of 1768 1016 No42113-No42114.exe schtasks.exe PID 1016 wrote to memory of 1768 1016 No42113-No42114.exe schtasks.exe PID 1016 wrote to memory of 1800 1016 No42113-No42114.exe No42113-No42114.exe PID 1016 wrote to memory of 1800 1016 No42113-No42114.exe No42113-No42114.exe PID 1016 wrote to memory of 1800 1016 No42113-No42114.exe No42113-No42114.exe PID 1016 wrote to memory of 1800 1016 No42113-No42114.exe No42113-No42114.exe PID 1016 wrote to memory of 1800 1016 No42113-No42114.exe No42113-No42114.exe PID 1016 wrote to memory of 1800 1016 No42113-No42114.exe No42113-No42114.exe PID 1016 wrote to memory of 1800 1016 No42113-No42114.exe No42113-No42114.exe PID 1016 wrote to memory of 1800 1016 No42113-No42114.exe No42113-No42114.exe PID 1016 wrote to memory of 1800 1016 No42113-No42114.exe No42113-No42114.exe -
outlook_office_path 1 IoCs
Processes:
No42113-No42114.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe -
outlook_win_path 1 IoCs
Processes:
No42113-No42114.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 No42113-No42114.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\No42113-No42114.exe"C:\Users\Admin\AppData\Local\Temp\No42113-No42114.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1016 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qgklKc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp79F1.tmp"2⤵
- Creates scheduled task(s)
PID:1768 -
C:\Users\Admin\AppData\Local\Temp\No42113-No42114.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:1800
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD57043da73a82b1a0094e11be19b3bcd47
SHA10e212a3ac9766a88e93bcc4788aed488c2808dec
SHA25623cf477b2348bcaf804e26593ef2d408161b064399415e0b43277e9be3588833
SHA5129fd2383ed6a59922e546cc69a98b98e372c3a52dcd2907d2cf9d3caa7896e671dd3f8e2480c865592ac7f1af2932a1f7ec92d9a565b9e44a2201f69c5717a64b