Analysis
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max time kernel
147s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
26-04-2024 15:44
Static task
static1
Behavioral task
behavioral1
Sample
011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe
Resource
win7-20240221-en
General
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Target
011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe
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Size
542KB
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MD5
011c9344620bfd478f5d5cd2e086906f
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SHA1
0cf2f268bb8bee1dc3bc7abc740856401a2dbb11
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SHA256
e4e8614432443bd5bb00a2b4ec2bb75c000ecbc5e953ed48b3b591b49a927f95
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SHA512
056669240c96d3f8d0b8f31c7c16b7ab9b104a7b87639da8af9c7ac45c3a47f7d403f2afdba259f8d50b31cd526d660ca446a8e82c1b9a1adc8bcf5f64157314
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SSDEEP
12288:2MT4CbWhzzCGI2iWdYT/IUppED7zaR6I9+c/73KPo1CSj0w:244pHbsWdiI46D7C6IhDlLj
Malware Config
Extracted
nanocore
1.2.2.0
95.141.43.197:1990
127.0.0.1:1990
657717bf-3186-46ac-b768-4ebefec20c1b
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activate_away_mode
true
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backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2018-08-17T11:41:28.894134736Z
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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
1990
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default_group
NOVEMBER 5
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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
657717bf-3186-46ac-b768-4ebefec20c1b
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
95.141.43.197
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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 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3411335054-1982420046-2118495756-1000\Control Panel\International\Geo\Nation 011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe -
Executes dropped EXE 2 IoCs
Processes:
SystemObi.exeSystemObi.exepid process 1204 SystemObi.exe 4688 SystemObi.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
SystemObi.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3411335054-1982420046-2118495756-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SystemObi = "C:\\Users\\Admin\\AppData\\Local\\SystemObi.exe -boot" SystemObi.exe -
Processes:
SystemObi.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA SystemObi.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
SystemObi.exedescription pid process target process PID 1204 set thread context of 4688 1204 SystemObi.exe SystemObi.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
SystemObi.exepid process 4688 SystemObi.exe 4688 SystemObi.exe 4688 SystemObi.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
SystemObi.exepid process 4688 SystemObi.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exeSystemObi.exeSystemObi.exedescription pid process Token: SeDebugPrivilege 1624 011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe Token: SeDebugPrivilege 1204 SystemObi.exe Token: SeDebugPrivilege 4688 SystemObi.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.execmd.exeSystemObi.exedescription pid process target process PID 1624 wrote to memory of 2260 1624 011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe cmd.exe PID 1624 wrote to memory of 2260 1624 011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe cmd.exe PID 1624 wrote to memory of 2260 1624 011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe cmd.exe PID 1624 wrote to memory of 3768 1624 011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe cmd.exe PID 1624 wrote to memory of 3768 1624 011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe cmd.exe PID 1624 wrote to memory of 3768 1624 011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe cmd.exe PID 3768 wrote to memory of 1204 3768 cmd.exe SystemObi.exe PID 3768 wrote to memory of 1204 3768 cmd.exe SystemObi.exe PID 3768 wrote to memory of 1204 3768 cmd.exe SystemObi.exe PID 1204 wrote to memory of 4688 1204 SystemObi.exe SystemObi.exe PID 1204 wrote to memory of 4688 1204 SystemObi.exe SystemObi.exe PID 1204 wrote to memory of 4688 1204 SystemObi.exe SystemObi.exe PID 1204 wrote to memory of 4688 1204 SystemObi.exe SystemObi.exe PID 1204 wrote to memory of 4688 1204 SystemObi.exe SystemObi.exe PID 1204 wrote to memory of 4688 1204 SystemObi.exe SystemObi.exe PID 1204 wrote to memory of 4688 1204 SystemObi.exe SystemObi.exe PID 1204 wrote to memory of 4688 1204 SystemObi.exe SystemObi.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe"1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1624 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\011c9344620bfd478f5d5cd2e086906f_JaffaCakes118.exe" "C:\Users\Admin\AppData\Local\SystemObi.exe"2⤵PID:2260
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Local\SystemObi.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:3768 -
C:\Users\Admin\AppData\Local\SystemObi.exe"C:\Users\Admin\AppData\Local\SystemObi.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1204 -
C:\Users\Admin\AppData\Local\SystemObi.exe"C:\Users\Admin\AppData\Local\SystemObi.exe"4⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4688
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
542KB
MD5011c9344620bfd478f5d5cd2e086906f
SHA10cf2f268bb8bee1dc3bc7abc740856401a2dbb11
SHA256e4e8614432443bd5bb00a2b4ec2bb75c000ecbc5e953ed48b3b591b49a927f95
SHA512056669240c96d3f8d0b8f31c7c16b7ab9b104a7b87639da8af9c7ac45c3a47f7d403f2afdba259f8d50b31cd526d660ca446a8e82c1b9a1adc8bcf5f64157314