Analysis
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max time kernel
99s -
max time network
111s -
platform
windows7_x64 -
resource
win7v20201028 -
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
http://gogorv.net/parseopml/intel.php
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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1612 792 rundll32.exe EXCEL.EXE -
Templ.dll packer 3 IoCs
Detects Templ.dll packer which usually loads Trickbot.
Processes:
resource yara_rule behavioral1/memory/1612-10-0x0000000000310000-0x0000000000349000-memory.dmp templ_dll behavioral1/memory/1612-11-0x0000000000930000-0x0000000000967000-memory.dmp templ_dll behavioral1/memory/1612-13-0x0000000000170000-0x00000000001A6000-memory.dmp templ_dll -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 1612 rundll32.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 14 ident.me 13 ident.me -
Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Processes:
EXCEL.EXEdescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 792 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
wermgr.exedescription pid process Token: SeDebugPrivilege 656 wermgr.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 792 EXCEL.EXE 792 EXCEL.EXE 792 EXCEL.EXE -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
EXCEL.EXErundll32.exedescription pid process target process PID 792 wrote to memory of 1612 792 EXCEL.EXE rundll32.exe PID 792 wrote to memory of 1612 792 EXCEL.EXE rundll32.exe PID 792 wrote to memory of 1612 792 EXCEL.EXE rundll32.exe PID 792 wrote to memory of 1612 792 EXCEL.EXE rundll32.exe PID 792 wrote to memory of 1612 792 EXCEL.EXE rundll32.exe PID 792 wrote to memory of 1612 792 EXCEL.EXE rundll32.exe PID 792 wrote to memory of 1612 792 EXCEL.EXE rundll32.exe PID 1612 wrote to memory of 884 1612 rundll32.exe cmd.exe PID 1612 wrote to memory of 884 1612 rundll32.exe cmd.exe PID 1612 wrote to memory of 884 1612 rundll32.exe cmd.exe PID 1612 wrote to memory of 884 1612 rundll32.exe cmd.exe PID 1612 wrote to memory of 656 1612 rundll32.exe wermgr.exe PID 1612 wrote to memory of 656 1612 rundll32.exe wermgr.exe PID 1612 wrote to memory of 656 1612 rundll32.exe wermgr.exe PID 1612 wrote to memory of 656 1612 rundll32.exe wermgr.exe PID 1612 wrote to memory of 656 1612 rundll32.exe wermgr.exe PID 1612 wrote to memory of 656 1612 rundll32.exe wermgr.exe
Processes
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C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\inv-1980503679-1392467713.xls1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32 ..\Frost.bitte,DllRegisterServer12⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe3⤵
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C:\Windows\system32\wermgr.exeC:\Windows\system32\wermgr.exe3⤵
- 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\Frost.bitteMD5
5af074c9bec5f91119e5deac1964207a
SHA1c2ea2dbcf5393dbc02fb5a8f8040b80aee8d546d
SHA25668eb43b8e87657e66f8b25400926f55498bfde185252ee24eb068928d698e90d
SHA512dbfdb8145992efe00f9f8d1a82da9113ec722a6e5a135b652c087400cb75a05a7323314ec26f82d3b0483b65213e00f4309d25770c272b2db419dedb0f062089
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\Users\Admin\Frost.bitteMD5
5af074c9bec5f91119e5deac1964207a
SHA1c2ea2dbcf5393dbc02fb5a8f8040b80aee8d546d
SHA25668eb43b8e87657e66f8b25400926f55498bfde185252ee24eb068928d698e90d
SHA512dbfdb8145992efe00f9f8d1a82da9113ec722a6e5a135b652c087400cb75a05a7323314ec26f82d3b0483b65213e00f4309d25770c272b2db419dedb0f062089
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memory/656-12-0x0000000000000000-mapping.dmp
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memory/656-19-0x0000000000110000-0x0000000000111000-memory.dmpFilesize
4KB
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memory/656-16-0x0000000000060000-0x0000000000088000-memory.dmpFilesize
160KB
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memory/792-3-0x0000000071CE1000-0x0000000071CE3000-memory.dmpFilesize
8KB
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memory/792-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/792-2-0x000000002F9C1000-0x000000002F9C4000-memory.dmpFilesize
12KB
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memory/1612-6-0x0000000000000000-mapping.dmp
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memory/1612-11-0x0000000000930000-0x0000000000967000-memory.dmpFilesize
220KB
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memory/1612-10-0x0000000000310000-0x0000000000349000-memory.dmpFilesize
228KB
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memory/1612-13-0x0000000000170000-0x00000000001A6000-memory.dmpFilesize
216KB
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memory/1612-7-0x0000000076861000-0x0000000076863000-memory.dmpFilesize
8KB
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memory/1612-17-0x0000000000271000-0x0000000000273000-memory.dmpFilesize
8KB
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memory/1612-14-0x00000000009F0000-0x0000000000A33000-memory.dmpFilesize
268KB
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memory/1612-15-0x0000000000350000-0x0000000000351000-memory.dmpFilesize
4KB
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memory/1612-18-0x0000000010000000-0x0000000010037000-memory.dmpFilesize
220KB
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memory/1812-5-0x000007FEF6A60000-0x000007FEF6CDA000-memory.dmpFilesize
2.5MB