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Analysis
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max time kernel
117s -
max time network
121s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
22/09/2024, 19:52
Static task
static1
Behavioral task
behavioral1
Sample
15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe
Resource
win7-20240903-en
General
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Target
15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe
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Size
1.1MB
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MD5
bc1580083136b4d78a75b461c96b0360
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SHA1
9ba817f1337cb7750b677d66bcf234b20448ae54
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SHA256
15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601
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SHA512
9aedb647c349bace67e0de0747f020c8916559680f9ac6d5647eb891d56d78b58f7685e8d423c7e7638e4b95c61157abb1aec51247579e8abd455e966b438908
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SSDEEP
24576:1AHnh+eWsN3skA4RV1Hom2KXMmHahZB/Nep86f3YAm4W5g:kh+ZkldoPK8Yahb/NKKAm9g
Malware Config
Extracted
nanocore
1.2.2.0
160.202.163.242:6765
c0a66e70-712e-4e13-85d0-5362a812b1a5
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activate_away_mode
true
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backup_connection_host
160.202.163.242
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2019-02-24T16:03:16.653191036Z
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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
6765
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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
c0a66e70-712e-4e13-85d0-5362a812b1a5
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
160.202.163.242
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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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Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VsGraphicsDesktopEngine.lnk 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.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\DNS Monitor = "C:\\Program Files (x86)\\DNS Monitor\\dnsmon.exe" RegAsm.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 1896 set thread context of 3000 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 92 -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\DNS Monitor\dnsmon.exe RegAsm.exe File opened for modification C:\Program Files (x86)\DNS Monitor\dnsmon.exe RegAsm.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 4 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 RegAsm.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 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.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 3036 schtasks.exe 4372 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 19 IoCs
pid Process 3000 RegAsm.exe 3000 RegAsm.exe 3000 RegAsm.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3000 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3000 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe -
Suspicious use of SendNotifyMessage 3 IoCs
pid Process 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1896 wrote to memory of 3000 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 92 PID 1896 wrote to memory of 3000 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 92 PID 1896 wrote to memory of 3000 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 92 PID 1896 wrote to memory of 3000 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 92 PID 1896 wrote to memory of 3000 1896 15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe 92 PID 3000 wrote to memory of 3036 3000 RegAsm.exe 94 PID 3000 wrote to memory of 3036 3000 RegAsm.exe 94 PID 3000 wrote to memory of 3036 3000 RegAsm.exe 94 PID 3000 wrote to memory of 4372 3000 RegAsm.exe 96 PID 3000 wrote to memory of 4372 3000 RegAsm.exe 96 PID 3000 wrote to memory of 4372 3000 RegAsm.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe"C:\Users\Admin\AppData\Local\Temp\15b2089990f297343963c24da6578e2f45573c1f521e07a8a952cf53cf445601N.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1896 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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:3000 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DNS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4282.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:3036
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DNS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp42E1.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4372
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Network
MITRE ATT&CK Enterprise v15
Persistence
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
MD5c6f0625bf4c1cdfb699980c9243d3b22
SHA143de1fe580576935516327f17b5da0c656c72851
SHA2568dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA5129ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
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Filesize
1KB
MD57620b805f7bc12c79e126656c858d0e0
SHA189f09b8b4ef1fc421ddf5ed0cbbe012fab7fd666
SHA2564d6ea014d135bdc4a5fd4281ce705672561b0279deab4302e06cbfe95e1080a6
SHA512b02ac735c98b20020251a23ffa1b0308ad3a1c99593a15a8020d742472b0d5c36caa31c6ca2372e88cfd3b6792206ea7920162c2a33c83da24f0098c0513f562