Analysis
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max time kernel
136s -
max time network
120s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
09-03-2021 01:59
Static task
static1
Behavioral task
behavioral1
Sample
SecuriteInfo.com.Heur.27256.32226.xls
Resource
win7v20201028
General
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Target
SecuriteInfo.com.Heur.27256.32226.xls
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Size
192KB
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MD5
7500c42100f4998290e543d5889b5e28
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SHA1
bfb8d8db3c3b64d04ae77f8943c6c0cb10809f1a
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SHA256
6c9e3cfb53217e1838c60deba9f8b40e6cae60c8155a7ed8cc6344ab04beefa7
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SHA512
877b33242c182044627790ad039a5ac6b1df29121159c27e75e5b0757d709dd9c2142580ae48f65f986063cccb2c83e92e0783a8c99297a8e554a904030a13a3
Malware Config
Extracted
trickbot
100013
rob72
103.225.138.94:449
122.2.28.70:449
123.200.26.246:449
131.255.106.152:449
142.112.79.223:449
154.126.176.30:449
180.92.238.186:449
187.20.217.129:449
201.20.118.122:449
202.91.41.138:449
95.210.118.90:449
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autorunName:pwgrab
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 416 1192 rundll32.exe EXCEL.EXE -
Templ.dll packer 3 IoCs
Detects Templ.dll packer which usually loads Trickbot.
Processes:
resource yara_rule behavioral2/memory/2796-11-0x0000000000F20000-0x0000000000F59000-memory.dmp templ_dll behavioral2/memory/2796-12-0x0000000000F60000-0x0000000000F97000-memory.dmp templ_dll behavioral2/memory/2796-13-0x0000000000E60000-0x0000000000E96000-memory.dmp templ_dll -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 2796 rundll32.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 36 api.ipify.org -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1192 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
wermgr.exedescription pid process Token: SeDebugPrivilege 744 wermgr.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 1192 EXCEL.EXE 1192 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 1192 EXCEL.EXE 1192 EXCEL.EXE 1192 EXCEL.EXE 1192 EXCEL.EXE 1192 EXCEL.EXE 1192 EXCEL.EXE 1192 EXCEL.EXE 1192 EXCEL.EXE 1192 EXCEL.EXE 1192 EXCEL.EXE 1192 EXCEL.EXE 1192 EXCEL.EXE -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
EXCEL.EXErundll32.exerundll32.exedescription pid process target process PID 1192 wrote to memory of 416 1192 EXCEL.EXE rundll32.exe PID 1192 wrote to memory of 416 1192 EXCEL.EXE rundll32.exe PID 416 wrote to memory of 2796 416 rundll32.exe rundll32.exe PID 416 wrote to memory of 2796 416 rundll32.exe rundll32.exe PID 416 wrote to memory of 2796 416 rundll32.exe rundll32.exe PID 2796 wrote to memory of 3492 2796 rundll32.exe cmd.exe PID 2796 wrote to memory of 3492 2796 rundll32.exe cmd.exe PID 2796 wrote to memory of 3492 2796 rundll32.exe cmd.exe PID 2796 wrote to memory of 744 2796 rundll32.exe wermgr.exe PID 2796 wrote to memory of 744 2796 rundll32.exe wermgr.exe PID 2796 wrote to memory of 744 2796 rundll32.exe wermgr.exe PID 2796 wrote to memory of 744 2796 rundll32.exe wermgr.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Heur.27256.32226.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1192 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Frost.bitte,DllRegisterServer12⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:416 -
C:\Windows\SysWOW64\rundll32.exerundll32 ..\Frost.bitte,DllRegisterServer13⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2796 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe4⤵PID:3492
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C:\Windows\system32\wermgr.exeC:\Windows\system32\wermgr.exe4⤵
- Suspicious use of AdjustPrivilegeToken
PID:744
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\Frost.bitteMD5
5af074c9bec5f91119e5deac1964207a
SHA1c2ea2dbcf5393dbc02fb5a8f8040b80aee8d546d
SHA25668eb43b8e87657e66f8b25400926f55498bfde185252ee24eb068928d698e90d
SHA512dbfdb8145992efe00f9f8d1a82da9113ec722a6e5a135b652c087400cb75a05a7323314ec26f82d3b0483b65213e00f4309d25770c272b2db419dedb0f062089
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\Users\Admin\Frost.bitteMD5
5af074c9bec5f91119e5deac1964207a
SHA1c2ea2dbcf5393dbc02fb5a8f8040b80aee8d546d
SHA25668eb43b8e87657e66f8b25400926f55498bfde185252ee24eb068928d698e90d
SHA512dbfdb8145992efe00f9f8d1a82da9113ec722a6e5a135b652c087400cb75a05a7323314ec26f82d3b0483b65213e00f4309d25770c272b2db419dedb0f062089
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memory/416-7-0x0000000000000000-mapping.dmp
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memory/744-14-0x0000000000000000-mapping.dmp
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memory/744-20-0x0000023C1E6E0000-0x0000023C1E6E1000-memory.dmpFilesize
4KB
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memory/744-19-0x0000023C1E5C0000-0x0000023C1E5E8000-memory.dmpFilesize
160KB
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memory/1192-2-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmpFilesize
64KB
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memory/1192-5-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmpFilesize
64KB
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memory/1192-4-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmpFilesize
64KB
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memory/1192-3-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmpFilesize
64KB
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memory/1192-6-0x00007FFE21550000-0x00007FFE21B87000-memory.dmpFilesize
6.2MB
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memory/2796-12-0x0000000000F60000-0x0000000000F97000-memory.dmpFilesize
220KB
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memory/2796-13-0x0000000000E60000-0x0000000000E96000-memory.dmpFilesize
216KB
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memory/2796-15-0x0000000010000000-0x0000000010037000-memory.dmpFilesize
220KB
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memory/2796-16-0x0000000000FA0000-0x0000000000FE3000-memory.dmpFilesize
268KB
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memory/2796-18-0x0000000000991000-0x0000000000993000-memory.dmpFilesize
8KB
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memory/2796-17-0x0000000001080000-0x0000000001081000-memory.dmpFilesize
4KB
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memory/2796-11-0x0000000000F20000-0x0000000000F59000-memory.dmpFilesize
228KB
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memory/2796-9-0x0000000000000000-mapping.dmp