Analysis
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max time kernel
69s -
max time network
150s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
09-03-2021 03:36
Static task
static1
Behavioral task
behavioral1
Sample
SecuriteInfo.com.Heur.20491.4771.xls
Resource
win7v20201028
Behavioral task
behavioral2
Sample
SecuriteInfo.com.Heur.20491.4771.xls
Resource
win10v20201028
General
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Target
SecuriteInfo.com.Heur.20491.4771.xls
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Size
192KB
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MD5
a7bee5a5d096719b81da34591415d866
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SHA1
1e94940395b2052e7a314d56e90d9ae25f116b30
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SHA256
e2a455e64ed4f48545fc175f8c867160cad738690e5ce6d2e7bc8cbe3a0ce6af
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SHA512
bb8613cd1e4bfb5d35955a1227a1455d7e68448d92c5d0d0340371c62826898329ec353f35424bf92bb6f4e620383b90beefae6e9ea1bef25204f1dd17a5fe8c
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 760 1904 rundll32.exe EXCEL.EXE -
Templ.dll packer 3 IoCs
Detects Templ.dll packer which usually loads Trickbot.
Processes:
resource yara_rule behavioral1/memory/760-10-0x00000000002A0000-0x00000000002D9000-memory.dmp templ_dll behavioral1/memory/760-11-0x00000000002E0000-0x0000000000317000-memory.dmp templ_dll behavioral1/memory/760-12-0x0000000000210000-0x0000000000246000-memory.dmp templ_dll -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 760 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 10 ipecho.net -
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 (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 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 Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar 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 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 (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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1904 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
wermgr.exedescription pid process Token: SeDebugPrivilege 952 wermgr.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1904 EXCEL.EXE 1904 EXCEL.EXE 1904 EXCEL.EXE -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
EXCEL.EXErundll32.exedescription pid process target process PID 1904 wrote to memory of 760 1904 EXCEL.EXE rundll32.exe PID 1904 wrote to memory of 760 1904 EXCEL.EXE rundll32.exe PID 1904 wrote to memory of 760 1904 EXCEL.EXE rundll32.exe PID 1904 wrote to memory of 760 1904 EXCEL.EXE rundll32.exe PID 1904 wrote to memory of 760 1904 EXCEL.EXE rundll32.exe PID 1904 wrote to memory of 760 1904 EXCEL.EXE rundll32.exe PID 1904 wrote to memory of 760 1904 EXCEL.EXE rundll32.exe PID 760 wrote to memory of 1528 760 rundll32.exe cmd.exe PID 760 wrote to memory of 1528 760 rundll32.exe cmd.exe PID 760 wrote to memory of 1528 760 rundll32.exe cmd.exe PID 760 wrote to memory of 1528 760 rundll32.exe cmd.exe PID 760 wrote to memory of 952 760 rundll32.exe wermgr.exe PID 760 wrote to memory of 952 760 rundll32.exe wermgr.exe PID 760 wrote to memory of 952 760 rundll32.exe wermgr.exe PID 760 wrote to memory of 952 760 rundll32.exe wermgr.exe PID 760 wrote to memory of 952 760 rundll32.exe wermgr.exe PID 760 wrote to memory of 952 760 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\SecuriteInfo.com.Heur.20491.4771.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/760-10-0x00000000002A0000-0x00000000002D9000-memory.dmpFilesize
228KB
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memory/760-15-0x0000000010000000-0x0000000010037000-memory.dmpFilesize
220KB
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memory/760-6-0x0000000000000000-mapping.dmp
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memory/760-7-0x00000000766F1000-0x00000000766F3000-memory.dmpFilesize
8KB
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memory/760-17-0x00000000001E1000-0x00000000001E3000-memory.dmpFilesize
8KB
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memory/760-16-0x0000000000250000-0x0000000000251000-memory.dmpFilesize
4KB
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memory/760-14-0x00000000009A0000-0x00000000009E3000-memory.dmpFilesize
268KB
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memory/760-11-0x00000000002E0000-0x0000000000317000-memory.dmpFilesize
220KB
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memory/760-12-0x0000000000210000-0x0000000000246000-memory.dmpFilesize
216KB
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memory/952-13-0x0000000000000000-mapping.dmp
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memory/952-18-0x0000000000060000-0x0000000000088000-memory.dmpFilesize
160KB
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memory/952-19-0x0000000000190000-0x0000000000191000-memory.dmpFilesize
4KB
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memory/1844-5-0x000007FEF63D0000-0x000007FEF664A000-memory.dmpFilesize
2.5MB
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memory/1904-2-0x000000002FFA1000-0x000000002FFA4000-memory.dmpFilesize
12KB
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memory/1904-3-0x00000000715E1000-0x00000000715E3000-memory.dmpFilesize
8KB
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memory/1904-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB