Analysis
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max time kernel
118s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
25-04-2024 09:42
Static task
static1
Behavioral task
behavioral1
Sample
POP.exe
Resource
win7-20240220-en
General
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Target
POP.exe
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Size
660KB
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MD5
46d06b32a50fd0c1a1981695e6504aa5
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SHA1
562f1b0f554ab339d851e7c031059d20a1c88af6
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SHA256
3796fdf35ca6c4557746dc1de61e477fe9972bc44a2fb23503e302c27fab4335
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SHA512
c6ff00d37a3d8f8716df5a67d5f6e16bec0ec1a5ea4625138651ca8bc43ffda9e4ff77c158803d3399aa7543ec88dd37551215f60e159d226ac307cfd6e4cb44
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SSDEEP
12288:nYIPXjeFKYoJyZTH5Zx161j9QMRLPfVtc1qHNanyP8POCxU:nYIPGKYokbF01j9b1tcoMyP8POCy
Malware Config
Extracted
nanocore
1.2.2.0
amechi.duckdns.org:4190
1e951a16-0899-4a49-9bed-fad9fc6657d1
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activate_away_mode
true
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backup_connection_host
amechi.duckdns.org
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2024-02-05T10:09:03.565293536Z
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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
4190
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default_group
clement
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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
1e951a16-0899-4a49-9bed-fad9fc6657d1
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
amechi.duckdns.org
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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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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
POP.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe" POP.exe -
Processes:
POP.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA POP.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
POP.exedescription pid process target process PID 2080 set thread context of 2412 2080 POP.exe POP.exe -
Drops file in Program Files directory 2 IoCs
Processes:
POP.exedescription ioc process File created C:\Program Files (x86)\TCP Subsystem\tcpss.exe POP.exe File opened for modification C:\Program Files (x86)\TCP Subsystem\tcpss.exe POP.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1756 2080 WerFault.exe POP.exe -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
POP.exepowershell.exepowershell.exePOP.exepid process 2080 POP.exe 2080 POP.exe 2080 POP.exe 2080 POP.exe 2080 POP.exe 2080 POP.exe 2564 powershell.exe 2568 powershell.exe 2412 POP.exe 2412 POP.exe 2412 POP.exe 2412 POP.exe 2412 POP.exe 2412 POP.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
POP.exepid process 2412 POP.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
POP.exepowershell.exepowershell.exePOP.exedescription pid process Token: SeDebugPrivilege 2080 POP.exe Token: SeDebugPrivilege 2568 powershell.exe Token: SeDebugPrivilege 2564 powershell.exe Token: SeDebugPrivilege 2412 POP.exe -
Suspicious use of WriteProcessMemory 29 IoCs
Processes:
POP.exedescription pid process target process PID 2080 wrote to memory of 2564 2080 POP.exe powershell.exe PID 2080 wrote to memory of 2564 2080 POP.exe powershell.exe PID 2080 wrote to memory of 2564 2080 POP.exe powershell.exe PID 2080 wrote to memory of 2564 2080 POP.exe powershell.exe PID 2080 wrote to memory of 2568 2080 POP.exe powershell.exe PID 2080 wrote to memory of 2568 2080 POP.exe powershell.exe PID 2080 wrote to memory of 2568 2080 POP.exe powershell.exe PID 2080 wrote to memory of 2568 2080 POP.exe powershell.exe PID 2080 wrote to memory of 2928 2080 POP.exe schtasks.exe PID 2080 wrote to memory of 2928 2080 POP.exe schtasks.exe PID 2080 wrote to memory of 2928 2080 POP.exe schtasks.exe PID 2080 wrote to memory of 2928 2080 POP.exe schtasks.exe PID 2080 wrote to memory of 2416 2080 POP.exe POP.exe PID 2080 wrote to memory of 2416 2080 POP.exe POP.exe PID 2080 wrote to memory of 2416 2080 POP.exe POP.exe PID 2080 wrote to memory of 2416 2080 POP.exe POP.exe PID 2080 wrote to memory of 2412 2080 POP.exe POP.exe PID 2080 wrote to memory of 2412 2080 POP.exe POP.exe PID 2080 wrote to memory of 2412 2080 POP.exe POP.exe PID 2080 wrote to memory of 2412 2080 POP.exe POP.exe PID 2080 wrote to memory of 2412 2080 POP.exe POP.exe PID 2080 wrote to memory of 2412 2080 POP.exe POP.exe PID 2080 wrote to memory of 2412 2080 POP.exe POP.exe PID 2080 wrote to memory of 2412 2080 POP.exe POP.exe PID 2080 wrote to memory of 2412 2080 POP.exe POP.exe PID 2080 wrote to memory of 1756 2080 POP.exe WerFault.exe PID 2080 wrote to memory of 1756 2080 POP.exe WerFault.exe PID 2080 wrote to memory of 1756 2080 POP.exe WerFault.exe PID 2080 wrote to memory of 1756 2080 POP.exe WerFault.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\POP.exe"C:\Users\Admin\AppData\Local\Temp\POP.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2080 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\POP.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2564 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CXAoYUE.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2568 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CXAoYUE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp50FD.tmp"2⤵
- Creates scheduled task(s)
PID:2928 -
C:\Users\Admin\AppData\Local\Temp\POP.exe"C:\Users\Admin\AppData\Local\Temp\POP.exe"2⤵PID:2416
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C:\Users\Admin\AppData\Local\Temp\POP.exe"C:\Users\Admin\AppData\Local\Temp\POP.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
PID:2412 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2080 -s 9162⤵
- Program crash
PID:1756
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5d12b1f1584ceaa70a5086466527516b2
SHA162b82de14630cc5b1689f44e142212c7185ffb11
SHA256e1dd88b95707e0a96e67ebdee121ef437c37bba2682e339cffd0de3baddc1491
SHA512a29c525572e02ea966695dee80d96b91874b773bcaa60a9226ed0164b906f16149c8311f19ec22d70621a03ba30130b19c4ef142c3b8e035343cc8078cda6bd9
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize7KB
MD5945480969aabfd5294c6ee025d52eb1f
SHA172cf6d77d513a21805fff6ffdcc5330236e35404
SHA256c688b8563b4700691fc48cd2f35cf30e2fe8e1dc39c0169c97a4b317fd3dc830
SHA512a7aa9130da5b085bfbe1c299e25370e71f653cccacdcc080da78c60deb413d4c233d1559651d64fcb5f07f51d64d0d2c4e519957878cfd705cd6648b6b733a5f