Analysis
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max time kernel
149s -
max time network
152s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
18-01-2021 07:10
Static task
static1
Behavioral task
behavioral1
Sample
PO-WJO-001, pdf.exe
Resource
win7v20201028
General
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Target
PO-WJO-001, pdf.exe
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Size
991KB
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MD5
2fd90b8363aeeb5cc86b8d30bb07fb94
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SHA1
eed92d6fb8d6fdbe2f77d36554efe2ee92f12543
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SHA256
438c02be74a4976a426c2b0e5da2d37f04772782e59739ce2acc79e9dc780ca1
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SHA512
2da272144fdbdcdf69a834d09910db4670629fc5275d6f5f0ce473ea88b5a948b4763fe0aaa50b3ad1d3d4651e0a185d452a2753d46a45da01644deadca5f0d1
Malware Config
Extracted
nanocore
1.2.2.0
graceland777.ddns.net:7771
796872ff-c930-4eaf-9163-b73e79f476e7
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activate_away_mode
true
- backup_connection_host
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2020-08-03T07:35:46.802724836Z
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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
7771
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default_group
BLESS ME ALI
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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
796872ff-c930-4eaf-9163-b73e79f476e7
-
mutex_timeout
5000
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prevent_system_sleep
true
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primary_connection_host
graceland777.ddns.net
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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
false
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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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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegSvcs.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Host = "C:\\Program Files (x86)\\WPA Host\\wpahost.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PO-WJO-001, pdf.exedescription pid process target process PID 1968 set thread context of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegSvcs.exedescription ioc process File created C:\Program Files (x86)\WPA Host\wpahost.exe RegSvcs.exe File opened for modification C:\Program Files (x86)\WPA Host\wpahost.exe RegSvcs.exe -
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:
PO-WJO-001, pdf.exeRegSvcs.exepid process 1968 PO-WJO-001, pdf.exe 1684 RegSvcs.exe 1684 RegSvcs.exe 1684 RegSvcs.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegSvcs.exepid process 1684 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
PO-WJO-001, pdf.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 1968 PO-WJO-001, pdf.exe Token: SeDebugPrivilege 1684 RegSvcs.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
PO-WJO-001, pdf.exedescription pid process target process PID 1968 wrote to memory of 800 1968 PO-WJO-001, pdf.exe schtasks.exe PID 1968 wrote to memory of 800 1968 PO-WJO-001, pdf.exe schtasks.exe PID 1968 wrote to memory of 800 1968 PO-WJO-001, pdf.exe schtasks.exe PID 1968 wrote to memory of 800 1968 PO-WJO-001, pdf.exe schtasks.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe PID 1968 wrote to memory of 1684 1968 PO-WJO-001, pdf.exe RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO-WJO-001, pdf.exe"C:\Users\Admin\AppData\Local\Temp\PO-WJO-001, pdf.exe"1⤵
- 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\RvjYSzjgKmKvPq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE0FC.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"{path}"2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpE0FC.tmpMD5
e1deb1536854e5e497b3907170923f6c
SHA1aba7523ff88512f123c0266b806b3190b664e537
SHA256c55a57da2e241d9e46a4a1020533b42ad25618e8fc24fcb2ecbbd0a8e7e6f26a
SHA51245fd6cf636b2c7a13c652f741793f711cbd8247ecade3b415f340946517d7f8444205da9377a0d98ad80760abd241d8263e6028b4f337d780133ab5f02bff9ec
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memory/800-5-0x0000000000000000-mapping.dmp
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memory/1684-7-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1684-8-0x000000000041E792-mapping.dmp
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memory/1684-11-0x0000000002221000-0x0000000002222000-memory.dmpFilesize
4KB
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memory/1684-10-0x0000000002220000-0x0000000002221000-memory.dmpFilesize
4KB
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memory/1684-12-0x0000000002226000-0x0000000002237000-memory.dmpFilesize
68KB
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memory/1968-2-0x0000000075ED1000-0x0000000075ED3000-memory.dmpFilesize
8KB
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memory/1968-3-0x0000000000C10000-0x0000000000C11000-memory.dmpFilesize
4KB
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memory/1968-4-0x0000000000C11000-0x0000000000C12000-memory.dmpFilesize
4KB