Analysis
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max time kernel
135s -
max time network
131s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
09-03-2021 06:24
Static task
static1
Behavioral task
behavioral1
Sample
inv-1980503679-1392467713.xls
Resource
win7v20201028
General
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Target
inv-1980503679-1392467713.xls
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Size
192KB
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MD5
619999c46da65062f421ab6d5418a314
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SHA1
279e14c25a344eafcf93fc32d3b61063d0309b38
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SHA256
c3a67357a370aff945f2a0ac69b23b0bf54d1e6cc5a72cf314cb960e4d7289be
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SHA512
836f893cee2a8ec6a0ffeb87db0cb7267e8e0ab6b04d62a63b23cd4daf3c89765ceef4772a3bc298d9a1c3f6fac4e8ae8cd1c924e1c039c7a1d1a9a5dc8af813
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 204 3888 rundll32.exe EXCEL.EXE -
Templ.dll packer 3 IoCs
Detects Templ.dll packer which usually loads Trickbot.
Processes:
resource yara_rule behavioral2/memory/2632-11-0x0000000004BA0000-0x0000000004BD9000-memory.dmp templ_dll behavioral2/memory/2632-12-0x0000000005000000-0x0000000005037000-memory.dmp templ_dll behavioral2/memory/2632-14-0x0000000004AD0000-0x0000000004B06000-memory.dmp templ_dll -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 2632 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 49 ipecho.net -
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 opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 3888 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
wermgr.exedescription pid process Token: SeDebugPrivilege 3980 wermgr.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 3888 EXCEL.EXE 3888 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
EXCEL.EXErundll32.exerundll32.exedescription pid process target process PID 3888 wrote to memory of 204 3888 EXCEL.EXE rundll32.exe PID 3888 wrote to memory of 204 3888 EXCEL.EXE rundll32.exe PID 204 wrote to memory of 2632 204 rundll32.exe rundll32.exe PID 204 wrote to memory of 2632 204 rundll32.exe rundll32.exe PID 204 wrote to memory of 2632 204 rundll32.exe rundll32.exe PID 2632 wrote to memory of 3988 2632 rundll32.exe cmd.exe PID 2632 wrote to memory of 3988 2632 rundll32.exe cmd.exe PID 2632 wrote to memory of 3988 2632 rundll32.exe cmd.exe PID 2632 wrote to memory of 3980 2632 rundll32.exe wermgr.exe PID 2632 wrote to memory of 3980 2632 rundll32.exe wermgr.exe PID 2632 wrote to memory of 3980 2632 rundll32.exe wermgr.exe PID 2632 wrote to memory of 3980 2632 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\inv-1980503679-1392467713.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:3888 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Frost.bitte,DllRegisterServer12⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:204 -
C:\Windows\SysWOW64\rundll32.exerundll32 ..\Frost.bitte,DllRegisterServer13⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2632 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe4⤵PID:3988
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C:\Windows\system32\wermgr.exeC:\Windows\system32\wermgr.exe4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3980
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/204-7-0x0000000000000000-mapping.dmp
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memory/2632-14-0x0000000004AD0000-0x0000000004B06000-memory.dmpFilesize
216KB
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memory/2632-12-0x0000000005000000-0x0000000005037000-memory.dmpFilesize
220KB
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memory/2632-20-0x0000000010000000-0x0000000010037000-memory.dmpFilesize
220KB
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memory/2632-17-0x0000000005111000-0x0000000005113000-memory.dmpFilesize
8KB
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memory/2632-9-0x0000000000000000-mapping.dmp
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memory/2632-15-0x0000000005040000-0x0000000005083000-memory.dmpFilesize
268KB
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memory/2632-11-0x0000000004BA0000-0x0000000004BD9000-memory.dmpFilesize
228KB
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memory/2632-16-0x0000000005130000-0x0000000005131000-memory.dmpFilesize
4KB
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memory/3888-2-0x00007FFF49320000-0x00007FFF49330000-memory.dmpFilesize
64KB
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memory/3888-6-0x00007FFF49320000-0x00007FFF49330000-memory.dmpFilesize
64KB
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memory/3888-3-0x00007FFF49320000-0x00007FFF49330000-memory.dmpFilesize
64KB
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memory/3888-4-0x00007FFF49320000-0x00007FFF49330000-memory.dmpFilesize
64KB
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memory/3888-5-0x00007FFF6D2A0000-0x00007FFF6D8D7000-memory.dmpFilesize
6.2MB
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memory/3980-13-0x0000000000000000-mapping.dmp
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memory/3980-18-0x0000022621210000-0x0000022621238000-memory.dmpFilesize
160KB
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memory/3980-19-0x0000022621420000-0x0000022621421000-memory.dmpFilesize
4KB