Analysis
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max time kernel
119s -
max time network
96s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
07-08-2024 04:03
Static task
static1
Behavioral task
behavioral1
Sample
5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exe
Resource
win7-20240704-en
General
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Target
5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exe
-
Size
281KB
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MD5
5f3d5f8eae7c4bafe2f1e0ca83edf2e0
-
SHA1
c4bee44faaa77967652f34304091e9ea2418320b
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SHA256
ceac954cc8a5912ee568c933fdf0c862abfa80a0638a6f1541ac3c4b691f8e92
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SHA512
d485c791d0f6342acc8222581230877131183a6a069f2a66081f433fdcab7ca1906d7c52a8f7f1957f09a4b6eadf3efe18474cbe46b1e7b5ddf7ea99ee4ea301
-
SSDEEP
6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfm:boSeGUA5YZazpXUmZhZ6S7
Malware Config
Extracted
nanocore
1.2.2.0
sysupdate24.ddns.net:45400
ae82ab7f-db07-49ee-9d2b-76075d76f37f
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activate_away_mode
true
- backup_connection_host
- backup_dns_server
-
buffer_size
65535
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build_time
2020-04-24T17:41:53.492468936Z
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bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
45400
-
default_group
Default
-
enable_debug_mode
true
-
gc_threshold
1.048576e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
-
mutex
ae82ab7f-db07-49ee-9d2b-76075d76f37f
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
sysupdate24.ddns.net
- primary_dns_server
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request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
true
-
set_critical_process
true
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.2.0
-
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:
5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation 5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exe -
Executes dropped EXE 2 IoCs
Processes:
a1punf5t2of.exea1punf5t2of.exepid process 716 a1punf5t2of.exe 3600 a1punf5t2of.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" 5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exe -
Processes:
a1punf5t2of.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a1punf5t2of.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
a1punf5t2of.exedescription pid process target process PID 716 set thread context of 3600 716 a1punf5t2of.exe a1punf5t2of.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exea1punf5t2of.exea1punf5t2of.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1punf5t2of.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1punf5t2of.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
a1punf5t2of.exepid process 3600 a1punf5t2of.exe 3600 a1punf5t2of.exe 3600 a1punf5t2of.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
a1punf5t2of.exepid process 3600 a1punf5t2of.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
a1punf5t2of.exedescription pid process Token: SeDebugPrivilege 3600 a1punf5t2of.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exea1punf5t2of.exedescription pid process target process PID 2952 wrote to memory of 716 2952 5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exe a1punf5t2of.exe PID 2952 wrote to memory of 716 2952 5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exe a1punf5t2of.exe PID 2952 wrote to memory of 716 2952 5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exe a1punf5t2of.exe PID 716 wrote to memory of 3600 716 a1punf5t2of.exe a1punf5t2of.exe PID 716 wrote to memory of 3600 716 a1punf5t2of.exe a1punf5t2of.exe PID 716 wrote to memory of 3600 716 a1punf5t2of.exe a1punf5t2of.exe PID 716 wrote to memory of 3600 716 a1punf5t2of.exe a1punf5t2of.exe PID 716 wrote to memory of 3600 716 a1punf5t2of.exe a1punf5t2of.exe PID 716 wrote to memory of 3600 716 a1punf5t2of.exe a1punf5t2of.exe PID 716 wrote to memory of 3600 716 a1punf5t2of.exe a1punf5t2of.exe PID 716 wrote to memory of 3600 716 a1punf5t2of.exe a1punf5t2of.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exe"C:\Users\Admin\AppData\Local\Temp\5f3d5f8eae7c4bafe2f1e0ca83edf2e0N.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2952 -
C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:716 -
C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"3⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:3600
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
281KB
MD56aed1cd6a9b200867eb07e224370ca2b
SHA1d630b236e3ad79e3ba2824d2cec73a780bcb0e93
SHA2568bf34445c733c8dcfc65b38a13dc72daee33dd4675a5f2efe4dad78c5b0f48e2
SHA5123a9ece8549c52a013341d1cc61d21a0410cc2012abf88e72cf4991de8eef3a77bcaaa79cf59265b0edce86a8031d71ef290e56717e884364eb0f28ea9daa2625