Analysis
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max time kernel
122s -
max time network
120s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
03-03-2021 15:35
Behavioral task
behavioral1
Sample
March.xlsb
Resource
win7v20201028
General
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Target
March.xlsb
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Size
156KB
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MD5
aee94cb5bce75ff1d2e9bb2ca41b40e7
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SHA1
fa7239382fb2a406efde23ab0e9ef58ef649c5d2
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SHA256
394860f08ba108fbf31adeb687c911f381dced87d1fe78607546397cb78cdfb0
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SHA512
f748cfb700318762bda70bb4847ddfd1dc6c6681d801d52537cf8b7f76292f92110d1f04a571f2bccf8eac608d90aa707aa18af4cdd52c743e47d8f554dba31c
Malware Config
Extracted
http://195.123.219.72/haurf/n3/n3
Extracted
trickbot
100013
mon102
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 1728 1340 rundll32.exe EXCEL.EXE -
Templ.dll packer 3 IoCs
Detects Templ.dll packer which usually loads Trickbot.
Processes:
resource yara_rule behavioral1/memory/1728-14-0x0000000000870000-0x00000000008A7000-memory.dmp templ_dll behavioral1/memory/1728-13-0x0000000000310000-0x0000000000349000-memory.dmp templ_dll behavioral1/memory/1728-16-0x00000000002D0000-0x0000000000306000-memory.dmp templ_dll -
Loads dropped DLL 4 IoCs
Processes:
rundll32.exepid process 1728 rundll32.exe 1728 rundll32.exe 1728 rundll32.exe 1728 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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1340 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
wermgr.exedescription pid process Token: SeDebugPrivilege 1692 wermgr.exe -
Suspicious use of SetWindowsHookEx 5 IoCs
Processes:
EXCEL.EXEpid process 1340 EXCEL.EXE 1340 EXCEL.EXE 1340 EXCEL.EXE 1340 EXCEL.EXE 1340 EXCEL.EXE -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
EXCEL.EXErundll32.exedescription pid process target process PID 1340 wrote to memory of 1728 1340 EXCEL.EXE rundll32.exe PID 1340 wrote to memory of 1728 1340 EXCEL.EXE rundll32.exe PID 1340 wrote to memory of 1728 1340 EXCEL.EXE rundll32.exe PID 1340 wrote to memory of 1728 1340 EXCEL.EXE rundll32.exe PID 1340 wrote to memory of 1728 1340 EXCEL.EXE rundll32.exe PID 1340 wrote to memory of 1728 1340 EXCEL.EXE rundll32.exe PID 1340 wrote to memory of 1728 1340 EXCEL.EXE rundll32.exe PID 1728 wrote to memory of 1040 1728 rundll32.exe wermgr.exe PID 1728 wrote to memory of 1040 1728 rundll32.exe wermgr.exe PID 1728 wrote to memory of 1040 1728 rundll32.exe wermgr.exe PID 1728 wrote to memory of 1040 1728 rundll32.exe wermgr.exe PID 1728 wrote to memory of 1692 1728 rundll32.exe wermgr.exe PID 1728 wrote to memory of 1692 1728 rundll32.exe wermgr.exe PID 1728 wrote to memory of 1692 1728 rundll32.exe wermgr.exe PID 1728 wrote to memory of 1692 1728 rundll32.exe wermgr.exe PID 1728 wrote to memory of 1692 1728 rundll32.exe wermgr.exe PID 1728 wrote to memory of 1692 1728 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\March.xlsb1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1340 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\ProgramData\uveoq\69.dll,DllRegisterServer12⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1728 -
C:\Windows\system32\wermgr.exeC:\Windows\system32\wermgr.exe3⤵PID:1040
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C:\Windows\system32\wermgr.exeC:\Windows\system32\wermgr.exe3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1692
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
75378e60ba4f150d6adb5468edef655b
SHA151b17236d40ef2c354916d6f758191b3128bf58d
SHA256ff6554ab27fa28c602add0c4824a651b42f0d9b45e7d0a758ba66e2e650598db
SHA512c101fc303c3c88a982ac10324941d6b67f5b7880b3c98e4eb5a3aa1717688516e25ed70823cdacc02081ab06cc5890588aab396e4970f4c008699ce0289f1683
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
MD5aa39c2cc449d85b4cdc1570fda91e840
SHA18591448e069801f3afd63702a5a1021fd46ee371
SHA256c1d8efe7c3f865dd582e58ba0b1034104dfe90758aeb8c41517201388d429cf9
SHA51239016617261d180b662c5b68607961c2f027799f6d7c51bdf3e053c2140247a92aa3fb76dcd50494d275a67fe636ebedecc2193ddf772924cbaca5b3dd973b25
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MD5
75378e60ba4f150d6adb5468edef655b
SHA151b17236d40ef2c354916d6f758191b3128bf58d
SHA256ff6554ab27fa28c602add0c4824a651b42f0d9b45e7d0a758ba66e2e650598db
SHA512c101fc303c3c88a982ac10324941d6b67f5b7880b3c98e4eb5a3aa1717688516e25ed70823cdacc02081ab06cc5890588aab396e4970f4c008699ce0289f1683
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MD5
75378e60ba4f150d6adb5468edef655b
SHA151b17236d40ef2c354916d6f758191b3128bf58d
SHA256ff6554ab27fa28c602add0c4824a651b42f0d9b45e7d0a758ba66e2e650598db
SHA512c101fc303c3c88a982ac10324941d6b67f5b7880b3c98e4eb5a3aa1717688516e25ed70823cdacc02081ab06cc5890588aab396e4970f4c008699ce0289f1683
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MD5
75378e60ba4f150d6adb5468edef655b
SHA151b17236d40ef2c354916d6f758191b3128bf58d
SHA256ff6554ab27fa28c602add0c4824a651b42f0d9b45e7d0a758ba66e2e650598db
SHA512c101fc303c3c88a982ac10324941d6b67f5b7880b3c98e4eb5a3aa1717688516e25ed70823cdacc02081ab06cc5890588aab396e4970f4c008699ce0289f1683
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MD5
75378e60ba4f150d6adb5468edef655b
SHA151b17236d40ef2c354916d6f758191b3128bf58d
SHA256ff6554ab27fa28c602add0c4824a651b42f0d9b45e7d0a758ba66e2e650598db
SHA512c101fc303c3c88a982ac10324941d6b67f5b7880b3c98e4eb5a3aa1717688516e25ed70823cdacc02081ab06cc5890588aab396e4970f4c008699ce0289f1683