Analysis
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max time kernel
150s -
max time network
152s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
14-01-2021 16:01
Static task
static1
Behavioral task
behavioral1
Sample
Document#20014464370.pdf.exe
Resource
win7v20201028
General
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Target
Document#20014464370.pdf.exe
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Size
984KB
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MD5
7b53dd81534cbd1e8ab438f308818644
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SHA1
b386ee8a5faa3890d34916be7dacb8ae164ebbaa
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SHA256
3360f77209c2a2a5d393eefcb0229f34230fa261199aef2bdf17e8dda0ef540f
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SHA512
77603fb83b0a36028561fb0a1ba95858bc9ab1d1f2e7eee863cc3854df78bc5dfe94dcf5281c64d09b9d590d305b5da82fcde990fe8836194177c1fdfe3a9ffa
Malware Config
Extracted
nanocore
1.2.2.0
185.162.88.26:20911
fenixalec.ddns.net:20911
4c844ad7-de78-4c04-815b-d468ebb89811
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activate_away_mode
true
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backup_connection_host
fenixalec.ddns.net
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2020-10-25T21:31:56.793896536Z
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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
true
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connect_delay
4000
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connection_port
20911
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default_group
2021 GREATEST
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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
4c844ad7-de78-4c04-815b-d468ebb89811
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mutex_timeout
5000
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prevent_system_sleep
true
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primary_connection_host
185.162.88.26
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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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Executes dropped EXE 2 IoCs
Processes:
hdbdgdvf.exeInstallUtil.exepid process 624 hdbdgdvf.exe 1500 InstallUtil.exe -
Loads dropped DLL 2 IoCs
Processes:
Document#20014464370.pdf.exehdbdgdvf.exepid process 1080 Document#20014464370.pdf.exe 624 hdbdgdvf.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
reg.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\gddbbbx = "C:\\Users\\Admin\\AppData\\Roaming\\hdbdgdvf.exe" reg.exe -
Processes:
InstallUtil.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA InstallUtil.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
hdbdgdvf.exedescription pid process target process PID 624 set thread context of 1500 624 hdbdgdvf.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
Document#20014464370.pdf.exehdbdgdvf.exeInstallUtil.exepid process 1080 Document#20014464370.pdf.exe 1080 Document#20014464370.pdf.exe 1080 Document#20014464370.pdf.exe 1080 Document#20014464370.pdf.exe 1080 Document#20014464370.pdf.exe 624 hdbdgdvf.exe 624 hdbdgdvf.exe 1500 InstallUtil.exe 1500 InstallUtil.exe 1500 InstallUtil.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
InstallUtil.exepid process 1500 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
Document#20014464370.pdf.exehdbdgdvf.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 1080 Document#20014464370.pdf.exe Token: SeDebugPrivilege 624 hdbdgdvf.exe Token: SeDebugPrivilege 1500 InstallUtil.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
Document#20014464370.pdf.execmd.exehdbdgdvf.exedescription pid process target process PID 1080 wrote to memory of 1684 1080 Document#20014464370.pdf.exe cmd.exe PID 1080 wrote to memory of 1684 1080 Document#20014464370.pdf.exe cmd.exe PID 1080 wrote to memory of 1684 1080 Document#20014464370.pdf.exe cmd.exe PID 1080 wrote to memory of 1684 1080 Document#20014464370.pdf.exe cmd.exe PID 1684 wrote to memory of 1532 1684 cmd.exe reg.exe PID 1684 wrote to memory of 1532 1684 cmd.exe reg.exe PID 1684 wrote to memory of 1532 1684 cmd.exe reg.exe PID 1684 wrote to memory of 1532 1684 cmd.exe reg.exe PID 1080 wrote to memory of 624 1080 Document#20014464370.pdf.exe hdbdgdvf.exe PID 1080 wrote to memory of 624 1080 Document#20014464370.pdf.exe hdbdgdvf.exe PID 1080 wrote to memory of 624 1080 Document#20014464370.pdf.exe hdbdgdvf.exe PID 1080 wrote to memory of 624 1080 Document#20014464370.pdf.exe hdbdgdvf.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe PID 624 wrote to memory of 1500 624 hdbdgdvf.exe InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Document#20014464370.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Document#20014464370.pdf.exe"1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "gddbbbx" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\hdbdgdvf.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "gddbbbx" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\hdbdgdvf.exe"3⤵
- Adds Run key to start application
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C:\Users\Admin\AppData\Roaming\hdbdgdvf.exe"C:\Users\Admin\AppData\Roaming\hdbdgdvf.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"3⤵
- Executes dropped EXE
- 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\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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C:\Users\Admin\AppData\Roaming\hdbdgdvf.exeMD5
7b53dd81534cbd1e8ab438f308818644
SHA1b386ee8a5faa3890d34916be7dacb8ae164ebbaa
SHA2563360f77209c2a2a5d393eefcb0229f34230fa261199aef2bdf17e8dda0ef540f
SHA51277603fb83b0a36028561fb0a1ba95858bc9ab1d1f2e7eee863cc3854df78bc5dfe94dcf5281c64d09b9d590d305b5da82fcde990fe8836194177c1fdfe3a9ffa
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C:\Users\Admin\AppData\Roaming\hdbdgdvf.exeMD5
7b53dd81534cbd1e8ab438f308818644
SHA1b386ee8a5faa3890d34916be7dacb8ae164ebbaa
SHA2563360f77209c2a2a5d393eefcb0229f34230fa261199aef2bdf17e8dda0ef540f
SHA51277603fb83b0a36028561fb0a1ba95858bc9ab1d1f2e7eee863cc3854df78bc5dfe94dcf5281c64d09b9d590d305b5da82fcde990fe8836194177c1fdfe3a9ffa
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\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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\Users\Admin\AppData\Roaming\hdbdgdvf.exeMD5
7b53dd81534cbd1e8ab438f308818644
SHA1b386ee8a5faa3890d34916be7dacb8ae164ebbaa
SHA2563360f77209c2a2a5d393eefcb0229f34230fa261199aef2bdf17e8dda0ef540f
SHA51277603fb83b0a36028561fb0a1ba95858bc9ab1d1f2e7eee863cc3854df78bc5dfe94dcf5281c64d09b9d590d305b5da82fcde990fe8836194177c1fdfe3a9ffa
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memory/624-14-0x0000000000EB0000-0x0000000000EB1000-memory.dmpFilesize
4KB
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memory/624-10-0x0000000000000000-mapping.dmp
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memory/624-19-0x00000000006A0000-0x00000000006A1000-memory.dmpFilesize
4KB
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memory/624-18-0x00000000004F0000-0x00000000004FB000-memory.dmpFilesize
44KB
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memory/624-13-0x0000000074CF0000-0x00000000753DE000-memory.dmpFilesize
6.9MB
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memory/1080-6-0x0000000000520000-0x0000000000521000-memory.dmpFilesize
4KB
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memory/1080-3-0x0000000001080000-0x0000000001081000-memory.dmpFilesize
4KB
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memory/1080-5-0x00000000004F0000-0x000000000050E000-memory.dmpFilesize
120KB
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memory/1080-2-0x0000000074CF0000-0x00000000753DE000-memory.dmpFilesize
6.9MB
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memory/1500-22-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1500-23-0x000000000041E792-mapping.dmp
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memory/1500-25-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1500-26-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1500-27-0x0000000074CF0000-0x00000000753DE000-memory.dmpFilesize
6.9MB
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memory/1500-30-0x00000000003B0000-0x00000000003B5000-memory.dmpFilesize
20KB
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memory/1500-31-0x00000000003C0000-0x00000000003D9000-memory.dmpFilesize
100KB
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memory/1500-32-0x00000000003E0000-0x00000000003E3000-memory.dmpFilesize
12KB
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memory/1532-8-0x0000000000000000-mapping.dmp
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memory/1684-7-0x0000000000000000-mapping.dmp