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Analysis
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max time kernel
117s -
max time network
117s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
16/01/2025, 00:05
Static task
static1
Behavioral task
behavioral1
Sample
d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe
Resource
win7-20240903-en
General
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Target
d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe
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Size
256KB
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MD5
b172dbd342a0f600354cda3f5a068008
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SHA1
3ea34338e307ad428937c888bc780a7398f2d098
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SHA256
d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e
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SHA512
45b916616fa23fac7146c7c0ca3c8f44208f073fec72725b0fe34638e493458ca152f06c41292d8a52e21ca2e6f9f7b58cd2a26ec9bcf73d86b18bafcbe2c4f0
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SSDEEP
6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4R:EeGUA5YZazpXUmZhPR
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
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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
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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
45400
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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
ae82ab7f-db07-49ee-9d2b-76075d76f37f
-
mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
sysupdate24.ddns.net
- primary_dns_server
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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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Nanocore family
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Executes dropped EXE 2 IoCs
pid Process 3008 a1punf5t2of.exe 2640 a1punf5t2of.exe -
Loads dropped DLL 2 IoCs
pid Process 1196 d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe 3008 a1punf5t2of.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a1punf5t2of.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3008 set thread context of 2640 3008 a1punf5t2of.exe 32 -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.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
pid Process 2640 a1punf5t2of.exe 2640 a1punf5t2of.exe 2640 a1punf5t2of.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2640 a1punf5t2of.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2640 a1punf5t2of.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 1196 wrote to memory of 3008 1196 d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe 31 PID 1196 wrote to memory of 3008 1196 d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe 31 PID 1196 wrote to memory of 3008 1196 d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe 31 PID 1196 wrote to memory of 3008 1196 d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe 31 PID 1196 wrote to memory of 3008 1196 d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe 31 PID 1196 wrote to memory of 3008 1196 d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe 31 PID 1196 wrote to memory of 3008 1196 d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe 31 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32 PID 3008 wrote to memory of 2640 3008 a1punf5t2of.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe"C:\Users\Admin\AppData\Local\Temp\d4b9ae8ae5a3c7987da7abfb09914ba4141064bd3ff7315c664c30cb9aab191e.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1196 -
C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3008 -
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:2640
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
256KB
MD560b5f91ae3608dec621c85121def8464
SHA1e657df4e9b25e7b06e49260d3cff10cd527b6aa6
SHA2565c6fe756963b1ecc5b057c7e7cc56546b83c84c7a0079a989e2602fcdee77594
SHA512386fc011d619336da6a07d688f7cdfb265f6b24d55db487b59bfa041177a29173f0b724fa12493d5a0285679da572a2a9f8806c47d2d5364f1eda1df325e3e88