Analysis
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max time kernel
146s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
29/11/2023, 16:51
Static task
static1
Behavioral task
behavioral1
Sample
87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe
Resource
win7-20231020-en
General
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Target
87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe
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Size
608KB
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MD5
1e864ccd8567053c95a02ca465fa9084
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SHA1
46aa417097ba4262d0502e64d241ffab2406c0c1
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SHA256
87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572
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SHA512
d3295b1b37f8f45b8324961ed065ee2a8c70745016a7b9dcb2d56f114d18f798823ed7b167138ad81d338d455d8de76112a372c34db4dd5792d7deb4ed354503
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SSDEEP
12288:pTCQmbCpzkh2Ob06/YNYSiF3F6QGP/juNXfl7p64zpDeh8JqM:ZoUO062YSw4upf/1pIkqM
Malware Config
Extracted
nanocore
1.2.2.0
rn72836.sytes.net:6696
127.0.0.1:6696
3f30b298-001f-4f08-b22c-606b0d3632bd
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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
2023-09-08T19:00:17.997607436Z
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bypass_user_account_control
false
-
bypass_user_account_control_data
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clear_access_control
true
-
clear_zone_identifier
false
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connect_delay
4000
-
connection_port
6696
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default_group
rn728
-
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
3f30b298-001f-4f08-b22c-606b0d3632bd
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
rn72836.sytes.net
-
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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Manager = "C:\\Program Files (x86)\\SMTP Manager\\smtpmgr.exe" 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2688 set thread context of 4752 2688 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 89 -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\SMTP Manager\smtpmgr.exe 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe File opened for modification C:\Program Files (x86)\SMTP Manager\smtpmgr.exe 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 3556 schtasks.exe 3396 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 2688 wrote to memory of 4752 2688 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 89 PID 2688 wrote to memory of 4752 2688 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 89 PID 2688 wrote to memory of 4752 2688 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 89 PID 2688 wrote to memory of 4752 2688 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 89 PID 2688 wrote to memory of 4752 2688 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 89 PID 2688 wrote to memory of 4752 2688 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 89 PID 2688 wrote to memory of 4752 2688 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 89 PID 2688 wrote to memory of 4752 2688 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 89 PID 4752 wrote to memory of 3556 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 90 PID 4752 wrote to memory of 3556 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 90 PID 4752 wrote to memory of 3556 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 90 PID 4752 wrote to memory of 3396 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 92 PID 4752 wrote to memory of 3396 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 92 PID 4752 wrote to memory of 3396 4752 87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe"C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2688 -
C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe"C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.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
PID:4752 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "SMTP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD8BC.tmp"3⤵
- Creates scheduled task(s)
PID:3556
-
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "SMTP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD979.tmp"3⤵
- Creates scheduled task(s)
PID:3396
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe.log
Filesize1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
1KB
MD547158b877b6bff2f98a58ab041bec04f
SHA1bfb2da813de1b3f20fa71c2b33ab673fa787c6e0
SHA2564d6d78cb97d61e2a0ac5c407d6b0e42be7d8c2580c41eee67fa0c7de211e7a17
SHA51266a65e28637cac72d75a384cc5f770d762980af6deb5cb7b00d8f6a1b63f7860dbfe0b3f2b62f1abfc0c4909f6aa1ba779b0e7586622dcbc1dba08bd2f68c611
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Filesize
1KB
MD5b3b017f9df206021717a11f11d895402
SHA1e4ea12823af6550ee634536eec1eb14490580a3b
SHA256654dfce2c28024364e679e1b958f3fb81fc6d29685d534d905d1c83a84351024
SHA51295666cb81aa1fd1ade04a32f63381ce8bff274d7d300c0b59cbb10a294c4d1eebaa3000365a2000b38793de030044995cf23e623c5e3648d9b00501f97ff9343