Analysis
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max time kernel
171s -
max time network
188s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
20-05-2022 22:49
Static task
static1
Behavioral task
behavioral1
Sample
Folha de dados de cotação para nossa empresa doc.exe
Resource
win7-20220414-en
General
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Target
Folha de dados de cotação para nossa empresa doc.exe
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Size
353KB
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MD5
d2218723958925fa4f1db0e3c8fcd5ec
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SHA1
be24d6aa66b1e33b1d17fa749e76dad3a57ec0df
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SHA256
18d75d5ac1ab85ab35e56305bcda420a6afd91c431ff002d2ba4887cdfd6fb1e
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SHA512
133b83bd4109e0c1adf36c4f05753a2f2d74e11a8dc2cf8350e609f028caa791152055cd591a66ce2ac83f12ffd84abf0cab3d8627e9a7e802780f005a9f967f
Malware Config
Extracted
nanocore
1.2.2.0
24thmatch2020.duckdns.org:5626
127.0.0.1:5626
1d5c6dc1-3b0f-4759-9757-c47b26dc4c4d
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activate_away_mode
true
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backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2020-04-05T07:10:58.206265736Z
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bypass_user_account_control
true
- bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
true
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connect_delay
4000
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connection_port
5626
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default_group
24thMarch
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enable_debug_mode
true
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gc_threshold
1.048576e+07
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keep_alive_timeout
30000
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keyboard_logging
false
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lan_timeout
2500
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max_packet_size
1.048576e+07
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mutex
1d5c6dc1-3b0f-4759-9757-c47b26dc4c4d
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mutex_timeout
5000
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prevent_system_sleep
true
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primary_connection_host
24thmatch2020.duckdns.org
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primary_dns_server
8.8.8.8
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request_elevation
true
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restart_delay
5000
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run_delay
0
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run_on_startup
true
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set_critical_process
true
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timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
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wan_timeout
8000
Signatures
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Looks for VirtualBox Guest Additions in registry 2 TTPs
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Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
Folha de dados de cotação para nossa empresa doc.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Folha de dados de cotação para nossa empresa doc.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Folha de dados de cotação para nossa empresa doc.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Folha de dados de cotação para nossa empresa doc.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation Folha de dados de cotação para nossa empresa doc.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
Folha de dados de cotação para nossa empresa doc.exedescription ioc process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 Folha de dados de cotação para nossa empresa doc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum Folha de dados de cotação para nossa empresa doc.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Folha de dados de cotação para nossa empresa doc.exedescription pid process target process PID 2856 set thread context of 5004 2856 Folha de dados de cotação para nossa empresa doc.exe MSBuild.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: EnumeratesProcesses 4 IoCs
Processes:
Folha de dados de cotação para nossa empresa doc.exeMSBuild.exepid process 2856 Folha de dados de cotação para nossa empresa doc.exe 5004 MSBuild.exe 5004 MSBuild.exe 5004 MSBuild.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
MSBuild.exepid process 5004 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Folha de dados de cotação para nossa empresa doc.exeMSBuild.exedescription pid process Token: SeDebugPrivilege 2856 Folha de dados de cotação para nossa empresa doc.exe Token: SeDebugPrivilege 5004 MSBuild.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
Folha de dados de cotação para nossa empresa doc.exedescription pid process target process PID 2856 wrote to memory of 1696 2856 Folha de dados de cotação para nossa empresa doc.exe schtasks.exe PID 2856 wrote to memory of 1696 2856 Folha de dados de cotação para nossa empresa doc.exe schtasks.exe PID 2856 wrote to memory of 1696 2856 Folha de dados de cotação para nossa empresa doc.exe schtasks.exe PID 2856 wrote to memory of 5004 2856 Folha de dados de cotação para nossa empresa doc.exe MSBuild.exe PID 2856 wrote to memory of 5004 2856 Folha de dados de cotação para nossa empresa doc.exe MSBuild.exe PID 2856 wrote to memory of 5004 2856 Folha de dados de cotação para nossa empresa doc.exe MSBuild.exe PID 2856 wrote to memory of 5004 2856 Folha de dados de cotação para nossa empresa doc.exe MSBuild.exe PID 2856 wrote to memory of 5004 2856 Folha de dados de cotação para nossa empresa doc.exe MSBuild.exe PID 2856 wrote to memory of 5004 2856 Folha de dados de cotação para nossa empresa doc.exe MSBuild.exe PID 2856 wrote to memory of 5004 2856 Folha de dados de cotação para nossa empresa doc.exe MSBuild.exe PID 2856 wrote to memory of 5004 2856 Folha de dados de cotação para nossa empresa doc.exe MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Folha de dados de cotação para nossa empresa doc.exe"C:\Users\Admin\AppData\Local\Temp\Folha de dados de cotação para nossa empresa doc.exe"1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zUkqffZjrSgg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8855.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp8855.tmpFilesize
1KB
MD532759f86f4753b99b0f940b6d7b4ca79
SHA13dfcc559618ca350c3080348bc876030df2173ac
SHA2567e4f8a1316a6b16a05a623cf9b113b75ee51281d8bf7c19ac372a2971e72bf1d
SHA51259ccc1231020b246de76a0903933b7756a4513d0b164cc2eea78684f922dc778f0b9fb66a8b8e4b8df3909110efedbf5a480d31a9f0fb493245f601d0c8d0b45
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memory/1696-131-0x0000000000000000-mapping.dmp
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memory/2856-130-0x00000000745D0000-0x0000000074B81000-memory.dmpFilesize
5.7MB
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memory/5004-133-0x0000000000000000-mapping.dmp
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memory/5004-134-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/5004-135-0x00000000745D0000-0x0000000074B81000-memory.dmpFilesize
5.7MB