Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
09-07-2024 20:48
Static task
static1
Behavioral task
behavioral1
Sample
34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe
Resource
win7-20240704-en
General
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Target
34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe
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Size
1.4MB
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MD5
3b36c3d991fa41276b159ee069d36ed0
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SHA1
72a26f432db77d20ed92fbe2e8f0a140369c7478
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SHA256
34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633
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SHA512
af59725a9c3799c7e9501da0c70b3d6118f8982d95197f6ce6f489bb21afabc17943b3b5ff1f8338a742d69961604a53217c7f2207647b420b4f32ab2a43499f
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SSDEEP
24576:6AHnh+eWsN3skA4RV1Hom2KXMmHaYDBNkmBRGEMdSR5ADIAsG/jJ45h:Nh+ZkldoPK8YaZSeIAmh
Malware Config
Extracted
nanocore
1.2.2.0
bnow.duckdns.org:4156
fc4000c4-f8ec-42dc-a0ad-1edfd7548ceb
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activate_away_mode
true
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backup_connection_host
bnow.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
2018-08-20T04:39:27.808758936Z
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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
4156
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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
fc4000c4-f8ec-42dc-a0ad-1edfd7548ceb
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
bnow.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
true
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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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Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exeigfxEM.exeigfxEM.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe Key value queried \REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation igfxEM.exe Key value queried \REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation igfxEM.exe -
Executes dropped EXE 2 IoCs
Processes:
igfxEM.exeigfxEM.exepid process 3224 igfxEM.exe 1732 igfxEM.exe -
Processes:
RegAsm.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe -
AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
Processes:
resource yara_rule C:\Users\Admin\WinSAT\igfxEM.exe autoit_exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exeigfxEM.exeigfxEM.exedescription pid process target process PID 808 set thread context of 4632 808 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe RegAsm.exe PID 3224 set thread context of 5076 3224 igfxEM.exe RegAsm.exe PID 1732 set thread context of 2504 1732 igfxEM.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exeschtasks.exeschtasks.exepid process 2552 schtasks.exe 3908 schtasks.exe 4376 schtasks.exe 2024 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegAsm.exepid process 4632 RegAsm.exe 4632 RegAsm.exe 4632 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 4632 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 4632 RegAsm.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exeRegAsm.exeigfxEM.exeigfxEM.exedescription pid process target process PID 808 wrote to memory of 4632 808 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe RegAsm.exe PID 808 wrote to memory of 4632 808 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe RegAsm.exe PID 808 wrote to memory of 4632 808 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe RegAsm.exe PID 808 wrote to memory of 4632 808 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe RegAsm.exe PID 808 wrote to memory of 4632 808 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe RegAsm.exe PID 4632 wrote to memory of 2552 4632 RegAsm.exe schtasks.exe PID 4632 wrote to memory of 2552 4632 RegAsm.exe schtasks.exe PID 4632 wrote to memory of 2552 4632 RegAsm.exe schtasks.exe PID 808 wrote to memory of 3908 808 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe schtasks.exe PID 808 wrote to memory of 3908 808 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe schtasks.exe PID 808 wrote to memory of 3908 808 34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe schtasks.exe PID 3224 wrote to memory of 5076 3224 igfxEM.exe RegAsm.exe PID 3224 wrote to memory of 5076 3224 igfxEM.exe RegAsm.exe PID 3224 wrote to memory of 5076 3224 igfxEM.exe RegAsm.exe PID 3224 wrote to memory of 5076 3224 igfxEM.exe RegAsm.exe PID 3224 wrote to memory of 5076 3224 igfxEM.exe RegAsm.exe PID 3224 wrote to memory of 4376 3224 igfxEM.exe schtasks.exe PID 3224 wrote to memory of 4376 3224 igfxEM.exe schtasks.exe PID 3224 wrote to memory of 4376 3224 igfxEM.exe schtasks.exe PID 1732 wrote to memory of 2504 1732 igfxEM.exe RegAsm.exe PID 1732 wrote to memory of 2504 1732 igfxEM.exe RegAsm.exe PID 1732 wrote to memory of 2504 1732 igfxEM.exe RegAsm.exe PID 1732 wrote to memory of 2504 1732 igfxEM.exe RegAsm.exe PID 1732 wrote to memory of 2504 1732 igfxEM.exe RegAsm.exe PID 1732 wrote to memory of 2024 1732 igfxEM.exe schtasks.exe PID 1732 wrote to memory of 2024 1732 igfxEM.exe schtasks.exe PID 1732 wrote to memory of 2024 1732 igfxEM.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe"C:\Users\Admin\AppData\Local\Temp\34270186a18485241e8da987a4e588b744a363c6943eeb04b500495db752f633.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAT Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB045.tmp"3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\SysWOW64\schtasks.exe" /create /tn azroles /tr "C:\Users\Admin\WinSAT\igfxEM.exe" /sc minute /mo 1 /F2⤵
- Scheduled Task/Job: Scheduled Task
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C:\Users\Admin\WinSAT\igfxEM.exeC:\Users\Admin\WinSAT\igfxEM.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\SysWOW64\schtasks.exe" /create /tn azroles /tr "C:\Users\Admin\WinSAT\igfxEM.exe" /sc minute /mo 1 /F2⤵
- Scheduled Task/Job: Scheduled Task
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C:\Users\Admin\WinSAT\igfxEM.exeC:\Users\Admin\WinSAT\igfxEM.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\SysWOW64\schtasks.exe" /create /tn azroles /tr "C:\Users\Admin\WinSAT\igfxEM.exe" /sc minute /mo 1 /F2⤵
- Scheduled Task/Job: Scheduled Task
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\RegAsm.exe.logFilesize
496B
MD55b4789d01bb4d7483b71e1a35bce6a8b
SHA1de083f2131c9a763c0d1810c97a38732146cffbf
SHA256e248cef9500ed6e0c9f99d72a2a6a36955a5f0cfc0725748ef25a733cc8282f6
SHA512357e18ef30430e4b9cc4f2569b9735b1cd12f934c83162e4de78ac29ba9703b63ddb624ccc22afd5a5868f6e9d91a3c64581846abac22e9625f5b2e3d80b3ede
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C:\Users\Admin\AppData\Local\Temp\tmpB045.tmpFilesize
1KB
MD5c6f0625bf4c1cdfb699980c9243d3b22
SHA143de1fe580576935516327f17b5da0c656c72851
SHA2568dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA5129ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
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C:\Users\Admin\WinSAT\igfxEM.exeFilesize
1.4MB
MD5424140d255beaade0da647ee8837d374
SHA106be808895b33fc4ca04b37b1086376f5af03434
SHA2569ce0bb6224c26793d2e111bfdb45955f09bdf0009167c81d7c01f45a9d632f2f
SHA512e02c9e78a5a82c5dfcb2ee904dda019a219abdc73132335661d81b123cdaba75676a234662298a6bb17bb06eeefe2f31dd6c1e3ce02c60e1e918da7a745d5bf1
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C:\Users\Admin\azroles.lnkMD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
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memory/808-5-0x0000000003FE0000-0x0000000003FE1000-memory.dmpFilesize
4KB
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memory/4632-1-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/4632-6-0x0000000073582000-0x0000000073583000-memory.dmpFilesize
4KB
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memory/4632-7-0x0000000073580000-0x0000000073B31000-memory.dmpFilesize
5.7MB
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memory/4632-8-0x0000000073580000-0x0000000073B31000-memory.dmpFilesize
5.7MB
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memory/4632-16-0x0000000073582000-0x0000000073583000-memory.dmpFilesize
4KB
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memory/4632-17-0x0000000073580000-0x0000000073B31000-memory.dmpFilesize
5.7MB