Analysis
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max time kernel
149s -
max time network
157s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
12-10-2022 10:44
Static task
static1
Behavioral task
behavioral1
Sample
vbc.exe
Resource
win7-20220901-en
General
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Target
vbc.exe
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Size
931KB
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MD5
90af5bffeb1c24c1f9f02ec8566af684
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SHA1
d07c1a371a93be377b0dc8ce6f3c331d01f1ee3f
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SHA256
e801e38f603136aa52c0f83ea0169b732b0d5aafd7e01ba1cc5b33add09a36b6
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SHA512
dadcf1437cfea1f401daf0c86c6dc94c8804256c091b190c17918e8f9ef3c37f9acaed5cc98f1ea60ab63a76e9e36ec650fc4797c7c3b69d1fa244cc13ef5465
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SSDEEP
12288:xrHx6UJg5sRMQfw4Wx7egMLYVfYJ9mgDHBk/dVF5OtZoRNFIzRMg:xUUC6MkUYH9hHW/d9
Malware Config
Extracted
nanocore
1.2.2.0
albertsamco76.ddns.net:7480
79.134.225.71:7480
595ac7be-87a8-4935-8bed-199af086cae8
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activate_away_mode
true
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backup_connection_host
79.134.225.71
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2022-07-15T18:29:52.126272236Z
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bypass_user_account_control
false
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bypass_user_account_control_data
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+
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clear_access_control
true
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clear_zone_identifier
false
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connect_delay
5000
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connection_port
7480
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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
595ac7be-87a8-4935-8bed-199af086cae8
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
albertsamco76.ddns.net
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primary_dns_server
8.8.8.8
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request_elevation
false
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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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Uses the VBS compiler for execution 1 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
vbc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\AGP Manager = "C:\\Program Files (x86)\\AGP Manager\\agpmgr.exe" vbc.exe -
Processes:
vbc.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA vbc.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
vbc.exedescription pid process target process PID 960 set thread context of 688 960 vbc.exe vbc.exe -
Drops file in Program Files directory 2 IoCs
Processes:
vbc.exedescription ioc process File created C:\Program Files (x86)\AGP Manager\agpmgr.exe vbc.exe File opened for modification C:\Program Files (x86)\AGP Manager\agpmgr.exe vbc.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 1404 schtasks.exe 1040 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 11 IoCs
Processes:
vbc.exevbc.exepid process 960 vbc.exe 960 vbc.exe 960 vbc.exe 960 vbc.exe 960 vbc.exe 688 vbc.exe 688 vbc.exe 688 vbc.exe 688 vbc.exe 688 vbc.exe 688 vbc.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
vbc.exepid process 688 vbc.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
vbc.exevbc.exedescription pid process Token: SeDebugPrivilege 960 vbc.exe Token: SeDebugPrivilege 688 vbc.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
vbc.exevbc.exedescription pid process target process PID 960 wrote to memory of 688 960 vbc.exe vbc.exe PID 960 wrote to memory of 688 960 vbc.exe vbc.exe PID 960 wrote to memory of 688 960 vbc.exe vbc.exe PID 960 wrote to memory of 688 960 vbc.exe vbc.exe PID 960 wrote to memory of 688 960 vbc.exe vbc.exe PID 960 wrote to memory of 688 960 vbc.exe vbc.exe PID 960 wrote to memory of 688 960 vbc.exe vbc.exe PID 960 wrote to memory of 688 960 vbc.exe vbc.exe PID 960 wrote to memory of 688 960 vbc.exe vbc.exe PID 688 wrote to memory of 1404 688 vbc.exe schtasks.exe PID 688 wrote to memory of 1404 688 vbc.exe schtasks.exe PID 688 wrote to memory of 1404 688 vbc.exe schtasks.exe PID 688 wrote to memory of 1404 688 vbc.exe schtasks.exe PID 688 wrote to memory of 1040 688 vbc.exe schtasks.exe PID 688 wrote to memory of 1040 688 vbc.exe schtasks.exe PID 688 wrote to memory of 1040 688 vbc.exe schtasks.exe PID 688 wrote to memory of 1040 688 vbc.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "AGP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE10D.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "AGP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE246.tmp"3⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpE10D.tmpFilesize
1KB
MD5fd6482c8e3c8dacb7f6635ac6681aa5d
SHA1c11d7e5d72c35ffbc79ac9811d0f4757f7f015fe
SHA2567a2d7675bdb72946abf108f24ad568916819c8cfc8ef487d55c111145f2b0afc
SHA51253746f4359c63cf55619314204cc4c3320dfdcfaed5c778e4bb0f496a557084d9b6c882c70c9e01ae0101dee6bdde72e8e7a80f6950212cf4a66b1a625794da3
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C:\Users\Admin\AppData\Local\Temp\tmpE246.tmpFilesize
1KB
MD5885d6dd30570594e167fadb59d9ca0ea
SHA19981e583644c4eb9cf5056615a0e1c2913c8983b
SHA2567155bc082d1713d77c2797575ee0ade8467fb7012f5376c1d6f4aa618141a7d2
SHA5121623218143c2c25a7c85fa9da8e0f251f04a5eb848c4d0aa10bfb78688518b82393a2b3c7f287a9dc06a366ef9f46d0d4e2d246ad4cef4554a74c0bb6ff9dd2a
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memory/688-64-0x000000000041E792-mapping.dmp
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memory/688-66-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/688-58-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/688-60-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/688-61-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/688-63-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/688-76-0x00000000749D0000-0x0000000074F7B000-memory.dmpFilesize
5.7MB
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memory/688-57-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/688-68-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/688-71-0x00000000749D0000-0x0000000074F7B000-memory.dmpFilesize
5.7MB
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memory/960-70-0x00000000749D0000-0x0000000074F7B000-memory.dmpFilesize
5.7MB
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memory/960-56-0x00000000749D0000-0x0000000074F7B000-memory.dmpFilesize
5.7MB
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memory/960-55-0x00000000749D0000-0x0000000074F7B000-memory.dmpFilesize
5.7MB
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memory/960-54-0x00000000757A1000-0x00000000757A3000-memory.dmpFilesize
8KB
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memory/1040-74-0x0000000000000000-mapping.dmp
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memory/1404-72-0x0000000000000000-mapping.dmp