Analysis
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max time kernel
150s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20250129-en -
resource tags
arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system -
submitted
04/02/2025, 03:46
Static task
static1
Behavioral task
behavioral1
Sample
P I copy.docs.x.exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
P I copy.docs.x.exe
Resource
win10v2004-20250129-en
General
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Target
P I copy.docs.x.exe
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Size
701KB
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MD5
87e76b3ab65fafd1506f411841c73e94
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SHA1
3810482f5a3187ccf1dbc8ce4fc0752bb7e44c18
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SHA256
e207ac84a52789e4f93b901bdc24a0b9930759d50aab651cc3d5d1f3be7a3e44
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SHA512
c51ab6b12270d827de00eaccd212468e24ce5510b9b8e8fda36efc7792ed72d1c2321af7a6552a576e9dcb0bb0dbed7ba5345cb959a4460b8a934f6fc67521d3
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SSDEEP
12288:AYyPYswecl9ZzHS49uH5hYLl4D4i4uS8zpAzh33gyAmLxOjrIy6NYxYQL:cweKyILwXRA133gK2rIw
Malware Config
Extracted
nanocore
1.2.2.0
91.92.240.88:2777
25449be1-a962-4d47-a9f7-c613578ec634
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activate_away_mode
true
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backup_connection_host
91.92.240.88
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2024-04-19T10:57:33.704241736Z
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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
2777
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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
25449be1-a962-4d47-a9f7-c613578ec634
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
91.92.240.88
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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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Nanocore family
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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" P I copy.docs.x.exe -
Checks whether UAC is enabled 1 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA P I copy.docs.x.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4328 set thread context of 1060 4328 P I copy.docs.x.exe 90 -
Drops file in Program Files directory 2 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\DOS Manager\dosmgr.exe P I copy.docs.x.exe File created C:\Program Files (x86)\DOS Manager\dosmgr.exe P I copy.docs.x.exe -
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 P I copy.docs.x.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language P I copy.docs.x.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.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 3340 schtasks.exe 4888 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 4328 P I copy.docs.x.exe 4328 P I copy.docs.x.exe 4328 P I copy.docs.x.exe 4328 P I copy.docs.x.exe 1060 P I copy.docs.x.exe 1060 P I copy.docs.x.exe 1060 P I copy.docs.x.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1060 P I copy.docs.x.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4328 P I copy.docs.x.exe Token: SeDebugPrivilege 1060 P I copy.docs.x.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 4328 wrote to memory of 4204 4328 P I copy.docs.x.exe 89 PID 4328 wrote to memory of 4204 4328 P I copy.docs.x.exe 89 PID 4328 wrote to memory of 4204 4328 P I copy.docs.x.exe 89 PID 4328 wrote to memory of 1060 4328 P I copy.docs.x.exe 90 PID 4328 wrote to memory of 1060 4328 P I copy.docs.x.exe 90 PID 4328 wrote to memory of 1060 4328 P I copy.docs.x.exe 90 PID 4328 wrote to memory of 1060 4328 P I copy.docs.x.exe 90 PID 4328 wrote to memory of 1060 4328 P I copy.docs.x.exe 90 PID 4328 wrote to memory of 1060 4328 P I copy.docs.x.exe 90 PID 4328 wrote to memory of 1060 4328 P I copy.docs.x.exe 90 PID 4328 wrote to memory of 1060 4328 P I copy.docs.x.exe 90 PID 1060 wrote to memory of 3340 1060 P I copy.docs.x.exe 91 PID 1060 wrote to memory of 3340 1060 P I copy.docs.x.exe 91 PID 1060 wrote to memory of 3340 1060 P I copy.docs.x.exe 91 PID 1060 wrote to memory of 4888 1060 P I copy.docs.x.exe 93 PID 1060 wrote to memory of 4888 1060 P I copy.docs.x.exe 93 PID 1060 wrote to memory of 4888 1060 P I copy.docs.x.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4328 -
C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"2⤵PID:4204
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C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.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:1060 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DOS Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF51E.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:3340
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DOS Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF56D.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4888
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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
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Downloads
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Filesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
1KB
MD501f9a86d9610760a6fef15b42f51421c
SHA16712e76ab3cde995d646c65b294201a63c23a221
SHA256ce259ad39d30c453057fc465a0b4106ddbb7d5b01abdc01d41cf8f0d77a4f1e8
SHA51210b5c22823e33eb169221ddfbc1119bb2c6e6ca61c143a90fb812973fe611df18afb4087d142b96705fdcd66bae880a29555ffd8eef85a68f3df6a69c7f97e04
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Filesize
1KB
MD58f5713b14cee3089852f6c8d2a7a7d57
SHA18bffbea05715c6434ad593cce8a2c737f80ff788
SHA256ab3ce102242c3144f87bcbfe83984a478821cd09e62c0e5211b2ab37dde02d2c
SHA51282bd2378c2d6bb34a1ad3f2d26bfea583fc8403691bed6668521ba3e8bc7bdbdf142f872ddbc8e5251550f47c9bbee4eb3d0d6096f80d85259082cf68a454c72