Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
12-05-2021 23:48
Behavioral task
behavioral1
Sample
SecuriteInfo.com.Heur.32219.22782.xls
Resource
win7v20210410
General
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Target
SecuriteInfo.com.Heur.32219.22782.xls
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Size
277KB
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MD5
1ce9bb4784ef70cd5d09291a5005ab51
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SHA1
f4c3e4d7be3e6855c0272b0c2f3a2833bd6963a1
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SHA256
dfae46a2c8083b6cf4f91691289ca97cbcc002126058a2900f09564edccffdfb
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SHA512
da8a19266f2fc2be4693746961d4ad80f7da10d4956e315c6a8b89d500383c563300ca456c85680bc660783f5e570ccc447840ccdd20931cec57065c9988022a
Malware Config
Extracted
http://koneckotechnology.com/netmons.dll
Extracted
trickbot
2000029
net15
103.66.72.217:443
117.252.68.211:443
103.124.173.35:443
115.73.211.230:443
117.54.250.246:443
131.0.112.122:443
102.176.221.78:443
181.176.161.143:443
154.79.251.172:443
103.111.199.76:443
103.54.41.193:443
154.79.244.182:443
154.79.245.158:443
139.255.116.42:443
178.254.161.250:443
178.134.47.166:443
158.181.179.229:443
103.90.197.33:443
109.207.165.40:443
178.72.192.20:443
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autorunName:pwgrabbName:pwgrabc
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 436 1116 rundll32.exe EXCEL.EXE -
Templ.dll packer 3 IoCs
Detects Templ.dll packer which usually loads Trickbot.
Processes:
resource yara_rule behavioral1/memory/436-66-0x0000000000330000-0x0000000000369000-memory.dmp templ_dll behavioral1/memory/436-69-0x0000000000530000-0x0000000000567000-memory.dmp templ_dll behavioral1/memory/436-71-0x0000000000190000-0x00000000001C6000-memory.dmp templ_dll -
Downloads MZ/PE file
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Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 436 rundll32.exe -
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 Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1116 EXCEL.EXE -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
EXCEL.EXEpid process 1116 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
wermgr.exedescription pid process Token: SeDebugPrivilege 1088 wermgr.exe -
Suspicious use of SetWindowsHookEx 11 IoCs
Processes:
EXCEL.EXEpid process 1116 EXCEL.EXE 1116 EXCEL.EXE 1116 EXCEL.EXE 1116 EXCEL.EXE 1116 EXCEL.EXE 1116 EXCEL.EXE 1116 EXCEL.EXE 1116 EXCEL.EXE 1116 EXCEL.EXE 1116 EXCEL.EXE 1116 EXCEL.EXE -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
EXCEL.EXErundll32.exedescription pid process target process PID 1116 wrote to memory of 436 1116 EXCEL.EXE rundll32.exe PID 1116 wrote to memory of 436 1116 EXCEL.EXE rundll32.exe PID 1116 wrote to memory of 436 1116 EXCEL.EXE rundll32.exe PID 1116 wrote to memory of 436 1116 EXCEL.EXE rundll32.exe PID 1116 wrote to memory of 436 1116 EXCEL.EXE rundll32.exe PID 1116 wrote to memory of 436 1116 EXCEL.EXE rundll32.exe PID 1116 wrote to memory of 436 1116 EXCEL.EXE rundll32.exe PID 436 wrote to memory of 1088 436 rundll32.exe wermgr.exe PID 436 wrote to memory of 1088 436 rundll32.exe wermgr.exe PID 436 wrote to memory of 1088 436 rundll32.exe wermgr.exe PID 436 wrote to memory of 1088 436 rundll32.exe wermgr.exe PID 436 wrote to memory of 1088 436 rundll32.exe wermgr.exe PID 436 wrote to memory of 1088 436 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.32219.22782.xls1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1116 -
C:\Windows\SysWOW64\rundll32.exerundll32 ..\hsdksksk.iem,StartW2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:436 -
C:\Windows\system32\wermgr.exeC:\Windows\system32\wermgr.exe3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1088
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\hsdksksk.iemMD5
3bb9fe6b7e6b4d9c3a3c83de6aacd952
SHA157c343ae5e95fe702b759737522e85fe9e97fe5e
SHA256697dea4b154178e8de096c66167b539aa4465155d294b11765f1a1886eb7c56d
SHA5121e98417c6c48e0bf405ae5feda4193c91a3b385f387f33d79fba3dc6f7aa7571444885e6628b7ca6075887bfbec3bd17e0782c11a1c45a7d4b1a139849ca4df0
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\Users\Admin\hsdksksk.iemMD5
3bb9fe6b7e6b4d9c3a3c83de6aacd952
SHA157c343ae5e95fe702b759737522e85fe9e97fe5e
SHA256697dea4b154178e8de096c66167b539aa4465155d294b11765f1a1886eb7c56d
SHA5121e98417c6c48e0bf405ae5feda4193c91a3b385f387f33d79fba3dc6f7aa7571444885e6628b7ca6075887bfbec3bd17e0782c11a1c45a7d4b1a139849ca4df0
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memory/436-69-0x0000000000530000-0x0000000000567000-memory.dmpFilesize
220KB
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memory/436-74-0x00000000002C0000-0x00000000002D1000-memory.dmpFilesize
68KB
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memory/436-63-0x00000000767B1000-0x00000000767B3000-memory.dmpFilesize
8KB
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memory/436-73-0x0000000000680000-0x00000000006C3000-memory.dmpFilesize
268KB
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memory/436-62-0x0000000000000000-mapping.dmp
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memory/436-66-0x0000000000330000-0x0000000000369000-memory.dmpFilesize
228KB
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memory/436-75-0x00000000001F1000-0x00000000001F3000-memory.dmpFilesize
8KB
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memory/436-71-0x0000000000190000-0x00000000001C6000-memory.dmpFilesize
216KB
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memory/1088-72-0x0000000000000000-mapping.dmp
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memory/1088-77-0x0000000000110000-0x0000000000111000-memory.dmpFilesize
4KB
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memory/1088-76-0x0000000000060000-0x0000000000088000-memory.dmpFilesize
160KB
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memory/1116-59-0x000000002FB11000-0x000000002FB14000-memory.dmpFilesize
12KB
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memory/1116-60-0x0000000071B01000-0x0000000071B03000-memory.dmpFilesize
8KB
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memory/1116-61-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB