Analysis
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max time kernel
218s -
max time network
233s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
27/11/2022, 00:10
Static task
static1
Behavioral task
behavioral1
Sample
7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe
Resource
win7-20221111-en
General
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Target
7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe
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Size
1.0MB
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MD5
046ab73a83a70a4113f76b8e20b88296
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SHA1
3b56301250b3065c61e73700a3b219b0d5bd7cd6
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SHA256
7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3
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SHA512
30c10c87a6596529f8b1d049b394e09742bc0d865eae917750628d0a3f77ecb1a0b5f9724e3be8ebb4ff3c06880286756a5dd0ee076d4c987312af07a22e5d1b
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SSDEEP
24576:MRmJkcoQricOIQxiZY1iajcoFF68Xckkz+:ZJZoQrbTFZY1iajcoFF68MkkS
Malware Config
Extracted
nanocore
1.2.2.0
zebookis.ddns.net:9033
563a81fb-1703-4893-a1a8-e5ccb5a1f13a
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activate_away_mode
false
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backup_connection_host
zebookis.ddns.net
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2015-03-11T23:01:34.113398036Z
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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
false
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connect_delay
4000
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connection_port
9033
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default_group
Default
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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
563a81fb-1703-4893-a1a8-e5ccb5a1f13a
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mutex_timeout
5000
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prevent_system_sleep
true
- primary_connection_host
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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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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Users\\Admin\\AppData\\Local\\Temp\\filename.exe\\Windows,explorer.exe" 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft = "C:\\Users\\Admin\\AppData\\Local\\Temp\\filename.exe\\Windows" 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4988 set thread context of 4568 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 81 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 4568 RegAsm.exe 4568 RegAsm.exe 4568 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4568 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4568 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4988 wrote to memory of 4568 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 81 PID 4988 wrote to memory of 4568 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 81 PID 4988 wrote to memory of 4568 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 81 PID 4988 wrote to memory of 4568 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 81 PID 4988 wrote to memory of 4568 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 81 PID 4988 wrote to memory of 4568 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 81 PID 4988 wrote to memory of 4568 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 81 PID 4988 wrote to memory of 4568 4988 7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe"C:\Users\Admin\AppData\Local\Temp\7859c98430574c0efb43930e4e159787bb1a99345c8aa6d0a8d8c52e97d149f3.exe"1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4988 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4568
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