Analysis
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max time kernel
134s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
18-05-2024 18:27
Behavioral task
behavioral1
Sample
09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe
Resource
win7-20240221-en
General
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Target
09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe
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Size
646KB
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MD5
a11a5c3d99bb0e32eb2aaf1844701804
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SHA1
30315f81b09f88d1362bf21544b850aa9ec117ec
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SHA256
09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5
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SHA512
9b1961b4351abf48cc6cc153cc3d1a393007282341de3d08304baad9f7352c316c52356104ea2e74568234548389fd374457c6ed96e8e3813c5f79380721f67b
-
SSDEEP
12288:Eu/osQMgL96w0SVvV6fcaubLH31O2lxvdJGtKc/5kkfi1MgxdsKfr3e3g8C1DuRj:Eur9gkEPGcHHX1OSr/cnqGodhz3cp4oj
Malware Config
Extracted
nanocore
1.2.2.0
213.184.126.143:1993
023e0719-23ff-48a0-a14a-16f92fea10e1
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activate_away_mode
true
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backup_connection_host
213.184.126.143
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2019-01-21T14:43:07.916268436Z
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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
1993
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default_group
isreal
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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
023e0719-23ff-48a0-a14a-16f92fea10e1
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
213.184.126.143
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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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UPX dump on OEP (original entry point) 8 IoCs
Processes:
resource yara_rule behavioral2/memory/2628-0-0x0000000000DA0000-0x0000000000EE8000-memory.dmp UPX behavioral2/memory/2628-1-0x0000000000DA0000-0x0000000000EE8000-memory.dmp UPX behavioral2/memory/2628-2-0x0000000000DA0000-0x0000000000EE8000-memory.dmp UPX behavioral2/memory/2628-3-0x0000000000DA0000-0x0000000000EE8000-memory.dmp UPX behavioral2/memory/2628-4-0x0000000000DA0000-0x0000000000EE8000-memory.dmp UPX behavioral2/memory/2628-5-0x0000000000DA0000-0x0000000000EE8000-memory.dmp UPX behavioral2/memory/2628-6-0x0000000000DA0000-0x0000000000EE8000-memory.dmp UPX behavioral2/memory/2628-23-0x0000000000DA0000-0x0000000000EE8000-memory.dmp UPX -
Drops startup file 1 IoCs
Processes:
09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe -
Processes:
resource yara_rule behavioral2/memory/2628-0-0x0000000000DA0000-0x0000000000EE8000-memory.dmp upx behavioral2/memory/2628-1-0x0000000000DA0000-0x0000000000EE8000-memory.dmp upx behavioral2/memory/2628-2-0x0000000000DA0000-0x0000000000EE8000-memory.dmp upx behavioral2/memory/2628-3-0x0000000000DA0000-0x0000000000EE8000-memory.dmp upx behavioral2/memory/2628-4-0x0000000000DA0000-0x0000000000EE8000-memory.dmp upx behavioral2/memory/2628-5-0x0000000000DA0000-0x0000000000EE8000-memory.dmp upx behavioral2/memory/2628-6-0x0000000000DA0000-0x0000000000EE8000-memory.dmp upx behavioral2/memory/2628-23-0x0000000000DA0000-0x0000000000EE8000-memory.dmp upx behavioral2/memory/2628-24-0x0000000000DA0000-0x0000000000EE8000-memory.dmp upx behavioral2/memory/2628-28-0x0000000000DA0000-0x0000000000EE8000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegAsm.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Subsystem = "C:\\Program Files (x86)\\DHCP Subsystem\\dhcpss.exe" RegAsm.exe -
Processes:
RegAsm.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe -
AutoIT Executable 7 IoCs
AutoIT scripts compiled to PE executables.
Processes:
resource yara_rule behavioral2/memory/2628-1-0x0000000000DA0000-0x0000000000EE8000-memory.dmp autoit_exe behavioral2/memory/2628-2-0x0000000000DA0000-0x0000000000EE8000-memory.dmp autoit_exe behavioral2/memory/2628-3-0x0000000000DA0000-0x0000000000EE8000-memory.dmp autoit_exe behavioral2/memory/2628-4-0x0000000000DA0000-0x0000000000EE8000-memory.dmp autoit_exe behavioral2/memory/2628-5-0x0000000000DA0000-0x0000000000EE8000-memory.dmp autoit_exe behavioral2/memory/2628-6-0x0000000000DA0000-0x0000000000EE8000-memory.dmp autoit_exe behavioral2/memory/2628-23-0x0000000000DA0000-0x0000000000EE8000-memory.dmp autoit_exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exedescription pid process target process PID 2628 set thread context of 4688 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe RegAsm.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegAsm.exedescription ioc process File created C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe RegAsm.exe File opened for modification C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe RegAsm.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 4868 schtasks.exe 4544 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegAsm.exepid process 4688 RegAsm.exe 4688 RegAsm.exe 4688 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 4688 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 4688 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exepid process 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exepid process 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exeRegAsm.exedescription pid process target process PID 2628 wrote to memory of 4688 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe RegAsm.exe PID 2628 wrote to memory of 4688 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe RegAsm.exe PID 2628 wrote to memory of 4688 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe RegAsm.exe PID 2628 wrote to memory of 4688 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe RegAsm.exe PID 2628 wrote to memory of 4688 2628 09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe RegAsm.exe PID 4688 wrote to memory of 4868 4688 RegAsm.exe schtasks.exe PID 4688 wrote to memory of 4868 4688 RegAsm.exe schtasks.exe PID 4688 wrote to memory of 4868 4688 RegAsm.exe schtasks.exe PID 4688 wrote to memory of 4544 4688 RegAsm.exe schtasks.exe PID 4688 wrote to memory of 4544 4688 RegAsm.exe schtasks.exe PID 4688 wrote to memory of 4544 4688 RegAsm.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe"C:\Users\Admin\AppData\Local\Temp\09bc8f508d13b32a88d742229c4d33cbec3399c54e6259c6a0f8d499e6f229a5.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2628 -
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
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4688 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4C27.tmp"3⤵
- Creates scheduled task(s)
PID:4868 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4C57.tmp"3⤵
- Creates scheduled task(s)
PID:4544
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp4C27.tmpFilesize
1KB
MD5c6f0625bf4c1cdfb699980c9243d3b22
SHA143de1fe580576935516327f17b5da0c656c72851
SHA2568dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA5129ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
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C:\Users\Admin\AppData\Local\Temp\tmp4C57.tmpFilesize
1KB
MD52f26d92c1eeead3896820e56ec46f6f1
SHA1d95533b61eed7d89e4ada56bc566d60e42ac1f61
SHA25699a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa
SHA5126c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892
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memory/2628-4-0x0000000000DA0000-0x0000000000EE8000-memory.dmpFilesize
1.3MB
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memory/2628-24-0x0000000000DA0000-0x0000000000EE8000-memory.dmpFilesize
1.3MB
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memory/2628-0-0x0000000000DA0000-0x0000000000EE8000-memory.dmpFilesize
1.3MB
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memory/2628-5-0x0000000000DA0000-0x0000000000EE8000-memory.dmpFilesize
1.3MB
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memory/2628-6-0x0000000000DA0000-0x0000000000EE8000-memory.dmpFilesize
1.3MB
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memory/2628-12-0x0000000000AD0000-0x0000000000AD1000-memory.dmpFilesize
4KB
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memory/2628-28-0x0000000000DA0000-0x0000000000EE8000-memory.dmpFilesize
1.3MB
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memory/2628-3-0x0000000000DA0000-0x0000000000EE8000-memory.dmpFilesize
1.3MB
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memory/2628-23-0x0000000000DA0000-0x0000000000EE8000-memory.dmpFilesize
1.3MB
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memory/2628-1-0x0000000000DA0000-0x0000000000EE8000-memory.dmpFilesize
1.3MB
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memory/2628-2-0x0000000000DA0000-0x0000000000EE8000-memory.dmpFilesize
1.3MB
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memory/4688-8-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/4688-15-0x0000000073F20000-0x00000000744D1000-memory.dmpFilesize
5.7MB
-
memory/4688-14-0x0000000073F20000-0x00000000744D1000-memory.dmpFilesize
5.7MB
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memory/4688-13-0x0000000073F22000-0x0000000073F23000-memory.dmpFilesize
4KB
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memory/4688-30-0x0000000073F20000-0x00000000744D1000-memory.dmpFilesize
5.7MB
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memory/4688-29-0x0000000073F22000-0x0000000073F23000-memory.dmpFilesize
4KB