Analysis
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max time kernel
119s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
06-08-2024 15:10
Static task
static1
Behavioral task
behavioral1
Sample
c28d8f0154ef63cbc5f84f8e9940a840N.exe
Resource
win7-20240708-en
General
-
Target
c28d8f0154ef63cbc5f84f8e9940a840N.exe
-
Size
281KB
-
MD5
c28d8f0154ef63cbc5f84f8e9940a840
-
SHA1
ea66d43a335ba6c6c101b599fa021b061caac04e
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SHA256
0c4c5d4afa47499f0b32310b8c6b042f55e8d3358096eb24706ebb199b2b7d2d
-
SHA512
a458597512bd91b88b743b5294fab143c12397e12018da985fe6e792efba2777540f7a306e8dcbd08629494ede8a342a80d34ac9bd0686b0fdc866eb8033260e
-
SSDEEP
6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfO:boSeGUA5YZazpXUmZhZ6S7
Malware Config
Extracted
nanocore
1.2.2.0
sysupdate24.ddns.net:45400
ae82ab7f-db07-49ee-9d2b-76075d76f37f
-
activate_away_mode
true
- backup_connection_host
- backup_dns_server
-
buffer_size
65535
-
build_time
2020-04-24T17:41:53.492468936Z
-
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
-
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:
c28d8f0154ef63cbc5f84f8e9940a840N.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation c28d8f0154ef63cbc5f84f8e9940a840N.exe -
Executes dropped EXE 2 IoCs
Processes:
a1punf5t2of.exea1punf5t2of.exepid process 2336 a1punf5t2of.exe 3848 a1punf5t2of.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
c28d8f0154ef63cbc5f84f8e9940a840N.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" c28d8f0154ef63cbc5f84f8e9940a840N.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 2336 set thread context of 3848 2336 a1punf5t2of.exe a1punf5t2of.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
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:
a1punf5t2of.exea1punf5t2of.exec28d8f0154ef63cbc5f84f8e9940a840N.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1punf5t2of.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1punf5t2of.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language c28d8f0154ef63cbc5f84f8e9940a840N.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
a1punf5t2of.exepid process 3848 a1punf5t2of.exe 3848 a1punf5t2of.exe 3848 a1punf5t2of.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
a1punf5t2of.exepid process 3848 a1punf5t2of.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
a1punf5t2of.exedescription pid process Token: SeDebugPrivilege 3848 a1punf5t2of.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
c28d8f0154ef63cbc5f84f8e9940a840N.exea1punf5t2of.exedescription pid process target process PID 4956 wrote to memory of 2336 4956 c28d8f0154ef63cbc5f84f8e9940a840N.exe a1punf5t2of.exe PID 4956 wrote to memory of 2336 4956 c28d8f0154ef63cbc5f84f8e9940a840N.exe a1punf5t2of.exe PID 4956 wrote to memory of 2336 4956 c28d8f0154ef63cbc5f84f8e9940a840N.exe a1punf5t2of.exe PID 2336 wrote to memory of 3848 2336 a1punf5t2of.exe a1punf5t2of.exe PID 2336 wrote to memory of 3848 2336 a1punf5t2of.exe a1punf5t2of.exe PID 2336 wrote to memory of 3848 2336 a1punf5t2of.exe a1punf5t2of.exe PID 2336 wrote to memory of 3848 2336 a1punf5t2of.exe a1punf5t2of.exe PID 2336 wrote to memory of 3848 2336 a1punf5t2of.exe a1punf5t2of.exe PID 2336 wrote to memory of 3848 2336 a1punf5t2of.exe a1punf5t2of.exe PID 2336 wrote to memory of 3848 2336 a1punf5t2of.exe a1punf5t2of.exe PID 2336 wrote to memory of 3848 2336 a1punf5t2of.exe a1punf5t2of.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe"C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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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
-
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
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exeFilesize
281KB
MD58bb2acedf6f8226c32cb5c41400d776e
SHA1260b7a30ed09eac1f1b58bc6e83108aff9877b3c
SHA256dd94a4579455adafa554498010fcff16e5f14539498ef7e61df58c5328ff38e8
SHA5124b3005c8f929a5f61b85d309274f9fd6ff365b6117e4ed75dcd52e80a68df986cb492db3c6ca385512ab1f8c1c793044e1c685e844ec6d10e95aaeedeb4b9500
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memory/2336-17-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/2336-32-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/2336-30-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/2336-19-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/3848-20-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/3848-25-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/3848-34-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/3848-33-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/3848-22-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/3848-21-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/3848-26-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/3848-29-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/3848-27-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/4956-18-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/4956-2-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/4956-1-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB
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memory/4956-0-0x0000000074852000-0x0000000074853000-memory.dmpFilesize
4KB
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memory/4956-3-0x0000000074850000-0x0000000074E01000-memory.dmpFilesize
5.7MB