Analysis
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max time kernel
142s -
max time network
144s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
17-01-2021 13:38
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
611KB
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MD5
87437820810678730dc07ff0048c1b76
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SHA1
c8499e1ca4d93bdea294e9c841f33576f452ffce
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SHA256
42ec63d168aa68fc1408ef49e73fc9e0d70beec8add97cc2540a30ece7ca85ef
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SHA512
0547aff03fcd36778909a485a567537aea2dfcb73e0bd5f57f11f791774c0147bde40d597e42398400373b9da3033b3142e8e076c669052e62e2f1938d06a94d
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
-
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
-
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
-
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:
MSBuild.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Host = "C:\\Program Files (x86)\\WPA Host\\wpahost.exe" MSBuild.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PO-WJO-001, pdf.exedescription pid process target process PID 932 set thread context of 1708 932 PO-WJO-001, pdf.exe MSBuild.exe -
Drops file in Program Files directory 2 IoCs
Processes:
MSBuild.exedescription ioc process File created C:\Program Files (x86)\WPA Host\wpahost.exe MSBuild.exe File opened for modification C:\Program Files (x86)\WPA Host\wpahost.exe MSBuild.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.exeMSBuild.exepid process 932 PO-WJO-001, pdf.exe 1708 MSBuild.exe 1708 MSBuild.exe 1708 MSBuild.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
MSBuild.exepid process 1708 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
PO-WJO-001, pdf.exeMSBuild.exedescription pid process Token: SeDebugPrivilege 932 PO-WJO-001, pdf.exe Token: SeDebugPrivilege 1708 MSBuild.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
PO-WJO-001, pdf.exedescription pid process target process PID 932 wrote to memory of 1344 932 PO-WJO-001, pdf.exe schtasks.exe PID 932 wrote to memory of 1344 932 PO-WJO-001, pdf.exe schtasks.exe PID 932 wrote to memory of 1344 932 PO-WJO-001, pdf.exe schtasks.exe PID 932 wrote to memory of 1344 932 PO-WJO-001, pdf.exe schtasks.exe PID 932 wrote to memory of 1708 932 PO-WJO-001, pdf.exe MSBuild.exe PID 932 wrote to memory of 1708 932 PO-WJO-001, pdf.exe MSBuild.exe PID 932 wrote to memory of 1708 932 PO-WJO-001, pdf.exe MSBuild.exe PID 932 wrote to memory of 1708 932 PO-WJO-001, pdf.exe MSBuild.exe PID 932 wrote to memory of 1708 932 PO-WJO-001, pdf.exe MSBuild.exe PID 932 wrote to memory of 1708 932 PO-WJO-001, pdf.exe MSBuild.exe PID 932 wrote to memory of 1708 932 PO-WJO-001, pdf.exe MSBuild.exe PID 932 wrote to memory of 1708 932 PO-WJO-001, pdf.exe MSBuild.exe PID 932 wrote to memory of 1708 932 PO-WJO-001, pdf.exe MSBuild.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\RgnQOWXxJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB3E4.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.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
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpB3E4.tmpMD5
b0532901ed10e7e94eab49ffcf458f6c
SHA1019ea402296362ab6c6bef2edd4a9ce85d8f4171
SHA256aacbcc1b22dba1e0a0f3d699b5978e39119f13062b05c6c7333dbdd52d99c56a
SHA5129b39dd3d172c19d2433ca03474db6ba21299a1ae37a9f2192e7d18d0c8b7245a4df336da90f7e56a5668a0036d7138b86c222be3a1e70703698cd38194f52a22
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memory/1344-2-0x0000000000000000-mapping.dmp
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memory/1708-5-0x000000000041E792-mapping.dmp
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memory/1708-4-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1708-6-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1708-7-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB