Analysis
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max time kernel
117s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
25-04-2024 09:41
Static task
static1
Behavioral task
behavioral1
Sample
POP.exe
Resource
win7-20240221-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\NAS Host = "C:\\Program Files (x86)\\NAS Host\\nashost.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 2040 set thread context of 2448 2040 POP.exe POP.exe -
Drops file in Program Files directory 2 IoCs
Processes:
POP.exedescription ioc process File opened for modification C:\Program Files (x86)\NAS Host\nashost.exe POP.exe File created C:\Program Files (x86)\NAS Host\nashost.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 2800 2040 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 19 IoCs
Processes:
POP.exepowershell.exepowershell.exePOP.exepid process 2040 POP.exe 2040 POP.exe 2040 POP.exe 2040 POP.exe 2040 POP.exe 2540 powershell.exe 2392 powershell.exe 2040 POP.exe 2040 POP.exe 2040 POP.exe 2448 POP.exe 2448 POP.exe 2448 POP.exe 2448 POP.exe 2448 POP.exe 2448 POP.exe 2448 POP.exe 2448 POP.exe 2448 POP.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
POP.exepid process 2448 POP.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
POP.exepowershell.exepowershell.exePOP.exedescription pid process Token: SeDebugPrivilege 2040 POP.exe Token: SeDebugPrivilege 2540 powershell.exe Token: SeDebugPrivilege 2392 powershell.exe Token: SeDebugPrivilege 2448 POP.exe -
Suspicious use of WriteProcessMemory 29 IoCs
Processes:
POP.exedescription pid process target process PID 2040 wrote to memory of 2540 2040 POP.exe powershell.exe PID 2040 wrote to memory of 2540 2040 POP.exe powershell.exe PID 2040 wrote to memory of 2540 2040 POP.exe powershell.exe PID 2040 wrote to memory of 2540 2040 POP.exe powershell.exe PID 2040 wrote to memory of 2392 2040 POP.exe powershell.exe PID 2040 wrote to memory of 2392 2040 POP.exe powershell.exe PID 2040 wrote to memory of 2392 2040 POP.exe powershell.exe PID 2040 wrote to memory of 2392 2040 POP.exe powershell.exe PID 2040 wrote to memory of 3044 2040 POP.exe schtasks.exe PID 2040 wrote to memory of 3044 2040 POP.exe schtasks.exe PID 2040 wrote to memory of 3044 2040 POP.exe schtasks.exe PID 2040 wrote to memory of 3044 2040 POP.exe schtasks.exe PID 2040 wrote to memory of 2404 2040 POP.exe POP.exe PID 2040 wrote to memory of 2404 2040 POP.exe POP.exe PID 2040 wrote to memory of 2404 2040 POP.exe POP.exe PID 2040 wrote to memory of 2404 2040 POP.exe POP.exe PID 2040 wrote to memory of 2448 2040 POP.exe POP.exe PID 2040 wrote to memory of 2448 2040 POP.exe POP.exe PID 2040 wrote to memory of 2448 2040 POP.exe POP.exe PID 2040 wrote to memory of 2448 2040 POP.exe POP.exe PID 2040 wrote to memory of 2448 2040 POP.exe POP.exe PID 2040 wrote to memory of 2448 2040 POP.exe POP.exe PID 2040 wrote to memory of 2448 2040 POP.exe POP.exe PID 2040 wrote to memory of 2448 2040 POP.exe POP.exe PID 2040 wrote to memory of 2448 2040 POP.exe POP.exe PID 2040 wrote to memory of 2800 2040 POP.exe WerFault.exe PID 2040 wrote to memory of 2800 2040 POP.exe WerFault.exe PID 2040 wrote to memory of 2800 2040 POP.exe WerFault.exe PID 2040 wrote to memory of 2800 2040 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:2040 -
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:2540 -
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:2392 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CXAoYUE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6C4A.tmp"2⤵
- Creates scheduled task(s)
PID:3044 -
C:\Users\Admin\AppData\Local\Temp\POP.exe"C:\Users\Admin\AppData\Local\Temp\POP.exe"2⤵PID:2404
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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:2448 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 10162⤵
- Program crash
PID:2800
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD56d0ab94f6c663e059ad168638f8e09e5
SHA17de762472144dabcdb85d166feb5ac53bcf22bc1
SHA2563c9eedf6d3874ecd7fe0bfb039cf3153ad130528b7ae6b487e42686ca92f1158
SHA512e179e3a09f200f4a82702b60ca4029ab78747d2b681194605bd2939e1c064f13eb0bfbf295fdbc0d8dc8aa5d76d626e2fa63a7acfd7158975d1f11b762e2ef9a
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\NAQQNZ0BRQJ95FF7RXTP.temp
Filesize7KB
MD561d1bf8c5656905f60783b0bf6816dec
SHA1a177bf64f3d6e078428ffa7bb7d7314531af62f7
SHA25648742b0c9d56b2ad68aac4abb697c91b2a3ce820300cd63699acaa0e312096e7
SHA51242b2fc0500d8e1437d33b5add920ce7760b1f4ff7822c996879f631dd50951e7fd4c26e9acd212eeea3357c1fb627fcd85cda75914591b7f274a4085215190eb