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Analysis
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max time kernel
121s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
22/09/2024, 13:06
Static task
static1
Behavioral task
behavioral1
Sample
18d78dbc4fbda0d58ccae4aa8840e560.exe
Resource
win7-20240903-en
General
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Target
18d78dbc4fbda0d58ccae4aa8840e560.exe
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Size
593KB
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MD5
18d78dbc4fbda0d58ccae4aa8840e560
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SHA1
2951d8f45b9e1342beab4c8674bcce5672da1558
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SHA256
3af587731a4050cb520beeb1b67fd2d0654db2edf3968945419218b85461b568
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SHA512
2f8693e91b398e07998a6645f4790a9b61d1f75ebd07eb8d16cca7598594cf109bf535fb693d61bbc713237cfb2132285674e2cb8d73cde3a11a9249887e6f0b
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SSDEEP
12288:NHiwc0mNSj83IvhRNi/XAOtqkLmximdS8Irlmo5+Vh7kPzft7:NCwcSj8YvhRoAOAkLx4O+V9Sl
Malware Config
Extracted
nanocore
1.2.2.0
l3g3nd.sytes.net:3132
127.0.0.1:3132
84ab735e-1aa1-40a6-9462-ae2224636060
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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
2024-06-28T14:22:27.694177336Z
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bypass_user_account_control
false
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bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
false
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connect_delay
4000
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connection_port
3132
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default_group
l3g3nd
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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
84ab735e-1aa1-40a6-9462-ae2224636060
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
l3g3nd.sytes.net
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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
false
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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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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 3020 powershell.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\DOS Manager = "C:\\Program Files (x86)\\DOS Manager\\dosmgr.exe" 18d78dbc4fbda0d58ccae4aa8840e560.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 18d78dbc4fbda0d58ccae4aa8840e560.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2728 set thread context of 2552 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 32 -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\DOS Manager\dosmgr.exe 18d78dbc4fbda0d58ccae4aa8840e560.exe File opened for modification C:\Program Files (x86)\DOS Manager\dosmgr.exe 18d78dbc4fbda0d58ccae4aa8840e560.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 18d78dbc4fbda0d58ccae4aa8840e560.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 18d78dbc4fbda0d58ccae4aa8840e560.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2564 schtasks.exe 2148 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 3020 powershell.exe 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3020 powershell.exe Token: SeDebugPrivilege 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 2728 wrote to memory of 3020 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 30 PID 2728 wrote to memory of 3020 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 30 PID 2728 wrote to memory of 3020 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 30 PID 2728 wrote to memory of 3020 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 30 PID 2728 wrote to memory of 2552 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 32 PID 2728 wrote to memory of 2552 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 32 PID 2728 wrote to memory of 2552 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 32 PID 2728 wrote to memory of 2552 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 32 PID 2728 wrote to memory of 2552 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 32 PID 2728 wrote to memory of 2552 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 32 PID 2728 wrote to memory of 2552 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 32 PID 2728 wrote to memory of 2552 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 32 PID 2728 wrote to memory of 2552 2728 18d78dbc4fbda0d58ccae4aa8840e560.exe 32 PID 2552 wrote to memory of 2564 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 33 PID 2552 wrote to memory of 2564 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 33 PID 2552 wrote to memory of 2564 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 33 PID 2552 wrote to memory of 2564 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 33 PID 2552 wrote to memory of 2148 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 35 PID 2552 wrote to memory of 2148 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 35 PID 2552 wrote to memory of 2148 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 35 PID 2552 wrote to memory of 2148 2552 18d78dbc4fbda0d58ccae4aa8840e560.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe"C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3020
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C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe"C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2552 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DOS Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7CFD.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2564
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DOS Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7E55.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2148
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5a70c3b8a313c9b78ab56fe2e9e899786
SHA1497d5c359f2cb18cc4e16b4f160b372022ae958c
SHA256d6df7fedbe97712b87fa45d550e0e2f14967ada39480898b7b8b8d5a254f4d9c
SHA5129042508d38af9f2191f13d839f43d1ceef3d72bff804bb0e5a1afa0321f0a2a9fa795c76618cc3447b2cb5f81f365870f6b625bb5a9ef056e1b3cae3e7ec21c6
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Filesize
1KB
MD58f5713b14cee3089852f6c8d2a7a7d57
SHA18bffbea05715c6434ad593cce8a2c737f80ff788
SHA256ab3ce102242c3144f87bcbfe83984a478821cd09e62c0e5211b2ab37dde02d2c
SHA51282bd2378c2d6bb34a1ad3f2d26bfea583fc8403691bed6668521ba3e8bc7bdbdf142f872ddbc8e5251550f47c9bbee4eb3d0d6096f80d85259082cf68a454c72