Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 02:49
Static task
static1
Behavioral task
behavioral1
Sample
purchase order_20200831_01178(2)pdf.exe
Resource
win7-20220414-en
General
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Target
purchase order_20200831_01178(2)pdf.exe
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Size
661KB
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MD5
08deb61053e419b20b241252a79ed01a
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SHA1
f095a4d8a3c8c5311db86d0361a404083e1d74cf
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SHA256
e847719a98762bcf7422064186c2cdbb2f58000622448c3adcb6769b7cfbea68
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SHA512
c350c7491a900439c47ade7e5805b265a34568a7b126fcd091b94c827cf9cf003d5638057794c0a3e80a2b6270b9dbd50d9832a991f8c549669196ea82f503e0
Malware Config
Extracted
nanocore
1.2.2.0
morelogs2020.myq-see.com:8181
127.0.0.1:8181
f657e408-3011-4108-8a74-8dfd51cc84f7
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activate_away_mode
false
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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
2020-02-28T01:47:25.360949536Z
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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
8181
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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
f657e408-3011-4108-8a74-8dfd51cc84f7
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
morelogs2020.myq-see.com
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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:
purchase order_20200831_01178(2)pdf.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation purchase order_20200831_01178(2)pdf.exe -
Processes:
purchase order_20200831_01178(2)pdf.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA purchase order_20200831_01178(2)pdf.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
purchase order_20200831_01178(2)pdf.exedescription pid process target process PID 4756 set thread context of 4676 4756 purchase order_20200831_01178(2)pdf.exe purchase order_20200831_01178(2)pdf.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
purchase order_20200831_01178(2)pdf.exepurchase order_20200831_01178(2)pdf.exepid process 4756 purchase order_20200831_01178(2)pdf.exe 4676 purchase order_20200831_01178(2)pdf.exe 4676 purchase order_20200831_01178(2)pdf.exe 4676 purchase order_20200831_01178(2)pdf.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
purchase order_20200831_01178(2)pdf.exepid process 4676 purchase order_20200831_01178(2)pdf.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
purchase order_20200831_01178(2)pdf.exepurchase order_20200831_01178(2)pdf.exedescription pid process Token: SeDebugPrivilege 4756 purchase order_20200831_01178(2)pdf.exe Token: SeDebugPrivilege 4676 purchase order_20200831_01178(2)pdf.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
purchase order_20200831_01178(2)pdf.exedescription pid process target process PID 4756 wrote to memory of 4824 4756 purchase order_20200831_01178(2)pdf.exe schtasks.exe PID 4756 wrote to memory of 4824 4756 purchase order_20200831_01178(2)pdf.exe schtasks.exe PID 4756 wrote to memory of 4824 4756 purchase order_20200831_01178(2)pdf.exe schtasks.exe PID 4756 wrote to memory of 4676 4756 purchase order_20200831_01178(2)pdf.exe purchase order_20200831_01178(2)pdf.exe PID 4756 wrote to memory of 4676 4756 purchase order_20200831_01178(2)pdf.exe purchase order_20200831_01178(2)pdf.exe PID 4756 wrote to memory of 4676 4756 purchase order_20200831_01178(2)pdf.exe purchase order_20200831_01178(2)pdf.exe PID 4756 wrote to memory of 4676 4756 purchase order_20200831_01178(2)pdf.exe purchase order_20200831_01178(2)pdf.exe PID 4756 wrote to memory of 4676 4756 purchase order_20200831_01178(2)pdf.exe purchase order_20200831_01178(2)pdf.exe PID 4756 wrote to memory of 4676 4756 purchase order_20200831_01178(2)pdf.exe purchase order_20200831_01178(2)pdf.exe PID 4756 wrote to memory of 4676 4756 purchase order_20200831_01178(2)pdf.exe purchase order_20200831_01178(2)pdf.exe PID 4756 wrote to memory of 4676 4756 purchase order_20200831_01178(2)pdf.exe purchase order_20200831_01178(2)pdf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\purchase order_20200831_01178(2)pdf.exe"C:\Users\Admin\AppData\Local\Temp\purchase order_20200831_01178(2)pdf.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NXeRdsjnXbA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7918.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\purchase order_20200831_01178(2)pdf.exe"C:\Users\Admin\AppData\Local\Temp\purchase order_20200831_01178(2)pdf.exe"2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp7918.tmpFilesize
1KB
MD55217159eca36ac917ed9feae9737a11e
SHA1d3ab89c167498667573f0229740c62d16fd73b95
SHA256be1d973aeab2f935abe29b920fd90165b327ad679da9033c96a689f63a36f815
SHA512dc3ad086f877d770e1215cd666ff884bffe896727d25fe991ebddfd3540274dfeabc150bdc8d5688950ad52f353044e9a14f72dd4080b363a0994d25b4f46be9
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memory/4676-133-0x0000000000000000-mapping.dmp
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memory/4676-134-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/4676-135-0x0000000074650000-0x0000000074C01000-memory.dmpFilesize
5.7MB
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memory/4756-130-0x0000000074650000-0x0000000074C01000-memory.dmpFilesize
5.7MB
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memory/4824-131-0x0000000000000000-mapping.dmp