Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
03-06-2024 07:16
Static task
static1
Behavioral task
behavioral1
Sample
90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe
Resource
win7-20240508-en
General
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Target
90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe
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Size
1.4MB
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MD5
90ed1ecaaf3e45be409db491c473146a
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SHA1
1940d4fa5e7a112ef0c47d5fd3be49755f708a4f
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SHA256
71a63ee32124b1be8c33c6ba8a1879409b038af07fba17dc40d2df78614dd40b
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SHA512
9e833aa8ecc6e3f559a620de468ff64724224af1f9d8c48c6e46b2f1caf2580bd078e6cd75686029c0451b700cb64a60201d0562a134b0817f4d28a62199dbf6
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SSDEEP
24576:9AHnh+eWsN3skA4RV1Hom2KXMmHaUpFUp700KCHRr5uaW5:ch+ZkldoPK8YaUZ
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:
VsGraphicsDesktopEngine.exeVsGraphicsDesktopEngine.exe90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation VsGraphicsDesktopEngine.exe Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation VsGraphicsDesktopEngine.exe Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation 90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe -
Executes dropped EXE 2 IoCs
Processes:
VsGraphicsDesktopEngine.exeVsGraphicsDesktopEngine.exepid process 4492 VsGraphicsDesktopEngine.exe 4152 VsGraphicsDesktopEngine.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\AppData\Roaming\catsrv\VsGraphicsDesktopEngine.exe autoit_exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exeVsGraphicsDesktopEngine.exeVsGraphicsDesktopEngine.exedescription pid process target process PID 1232 set thread context of 2024 1232 90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe RegAsm.exe PID 4492 set thread context of 1288 4492 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4152 set thread context of 544 4152 VsGraphicsDesktopEngine.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 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 2696 schtasks.exe 1752 schtasks.exe 4464 schtasks.exe 5016 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegAsm.exepid process 2024 RegAsm.exe 2024 RegAsm.exe 2024 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 2024 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 2024 RegAsm.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exeRegAsm.exeVsGraphicsDesktopEngine.exeVsGraphicsDesktopEngine.exedescription pid process target process PID 1232 wrote to memory of 2024 1232 90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe RegAsm.exe PID 1232 wrote to memory of 2024 1232 90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe RegAsm.exe PID 1232 wrote to memory of 2024 1232 90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe RegAsm.exe PID 1232 wrote to memory of 2024 1232 90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe RegAsm.exe PID 1232 wrote to memory of 2024 1232 90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe RegAsm.exe PID 2024 wrote to memory of 2696 2024 RegAsm.exe schtasks.exe PID 2024 wrote to memory of 2696 2024 RegAsm.exe schtasks.exe PID 2024 wrote to memory of 2696 2024 RegAsm.exe schtasks.exe PID 1232 wrote to memory of 1752 1232 90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe schtasks.exe PID 1232 wrote to memory of 1752 1232 90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe schtasks.exe PID 1232 wrote to memory of 1752 1232 90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe schtasks.exe PID 4492 wrote to memory of 1288 4492 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4492 wrote to memory of 1288 4492 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4492 wrote to memory of 1288 4492 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4492 wrote to memory of 1288 4492 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4492 wrote to memory of 1288 4492 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4492 wrote to memory of 4464 4492 VsGraphicsDesktopEngine.exe schtasks.exe PID 4492 wrote to memory of 4464 4492 VsGraphicsDesktopEngine.exe schtasks.exe PID 4492 wrote to memory of 4464 4492 VsGraphicsDesktopEngine.exe schtasks.exe PID 4152 wrote to memory of 544 4152 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4152 wrote to memory of 544 4152 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4152 wrote to memory of 544 4152 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4152 wrote to memory of 544 4152 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4152 wrote to memory of 544 4152 VsGraphicsDesktopEngine.exe RegAsm.exe PID 4152 wrote to memory of 5016 4152 VsGraphicsDesktopEngine.exe schtasks.exe PID 4152 wrote to memory of 5016 4152 VsGraphicsDesktopEngine.exe schtasks.exe PID 4152 wrote to memory of 5016 4152 VsGraphicsDesktopEngine.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\90ed1ecaaf3e45be409db491c473146a_JaffaCakes118.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 "LAN Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5DEF.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\SysWOW64\schtasks.exe" /create /tn SgrmBroker /tr "C:\Users\Admin\AppData\Roaming\catsrv\VsGraphicsDesktopEngine.exe" /sc minute /mo 1 /F2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Roaming\catsrv\VsGraphicsDesktopEngine.exeC:\Users\Admin\AppData\Roaming\catsrv\VsGraphicsDesktopEngine.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 SgrmBroker /tr "C:\Users\Admin\AppData\Roaming\catsrv\VsGraphicsDesktopEngine.exe" /sc minute /mo 1 /F2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Roaming\catsrv\VsGraphicsDesktopEngine.exeC:\Users\Admin\AppData\Roaming\catsrv\VsGraphicsDesktopEngine.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 SgrmBroker /tr "C:\Users\Admin\AppData\Roaming\catsrv\VsGraphicsDesktopEngine.exe" /sc minute /mo 1 /F2⤵
- Creates scheduled task(s)
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\tmp5DEF.tmpFilesize
1KB
MD5c6f0625bf4c1cdfb699980c9243d3b22
SHA143de1fe580576935516327f17b5da0c656c72851
SHA2568dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA5129ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
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C:\Users\Admin\AppData\Roaming\catsrv\VsGraphicsDesktopEngine.exeFilesize
1.4MB
MD5aef150982be8e257b6552a3cfd24d36c
SHA16816d737bb82024242c04d95023dab9c31bf6384
SHA256d59d97897e2c35dc050bd0f81f69c80616e8700b5878d53263d2a08410b964c1
SHA5121d3035edd3da87b99ebd5691d91afa23c1adc25990f8d0a0dbbfa85754df07abf5a3dff64480aa0392f89c905c962ec733adccc9693d4380d70d7807d9e66d8e
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memory/1232-0-0x0000000000C70000-0x0000000000C71000-memory.dmpFilesize
4KB
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memory/2024-1-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2024-6-0x0000000073AD2000-0x0000000073AD3000-memory.dmpFilesize
4KB
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memory/2024-7-0x0000000073AD0000-0x0000000074081000-memory.dmpFilesize
5.7MB
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memory/2024-8-0x0000000073AD0000-0x0000000074081000-memory.dmpFilesize
5.7MB
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memory/2024-14-0x0000000073AD0000-0x0000000074081000-memory.dmpFilesize
5.7MB
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memory/2024-15-0x0000000073AD2000-0x0000000073AD3000-memory.dmpFilesize
4KB
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memory/2024-16-0x0000000073AD0000-0x0000000074081000-memory.dmpFilesize
5.7MB