Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
15-03-2021 17:03
Behavioral task
behavioral1
Sample
case_1978132122_1827517231.xlsm
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
case_1978132122_1827517231.xlsm
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
case_1978132122_1827517231.xlsm
-
Size
149KB
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MD5
54ff757c84e46cb4ba814ecc370f2083
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SHA1
d8357444374b2d6ad98cf3ee7535141d70f1dfc0
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SHA256
54094b2385ea86406ad20d865e6c03ec6233187e293d3d982d281d0237b552dc
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SHA512
061ba13876d1593f2e09e5ca188c8d6d688b7ba102d4a676c05b7e104f31df842c6c7396d4214f3e77f059b48c3fa3ad3f39335b4bfa42f16adaed59a6539f00
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
http://www.ceder-invest.be/sass/capital.php
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 1044 1856 rundll32.exe EXCEL.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\MenuExt 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 (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\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 (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 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\Toolbar EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1856 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 7 IoCs
Processes:
EXCEL.EXEpid process 1856 EXCEL.EXE 1856 EXCEL.EXE 1856 EXCEL.EXE 1856 EXCEL.EXE 1856 EXCEL.EXE 1856 EXCEL.EXE 1856 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1856 wrote to memory of 1044 1856 EXCEL.EXE rundll32.exe PID 1856 wrote to memory of 1044 1856 EXCEL.EXE rundll32.exe PID 1856 wrote to memory of 1044 1856 EXCEL.EXE rundll32.exe PID 1856 wrote to memory of 1044 1856 EXCEL.EXE rundll32.exe PID 1856 wrote to memory of 1044 1856 EXCEL.EXE rundll32.exe PID 1856 wrote to memory of 1044 1856 EXCEL.EXE rundll32.exe PID 1856 wrote to memory of 1044 1856 EXCEL.EXE rundll32.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\case_1978132122_1827517231.xlsm1⤵
- 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 ..\Krock.KOD,StartW2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1044-6-0x0000000000000000-mapping.dmp
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memory/1044-7-0x00000000767E1000-0x00000000767E3000-memory.dmpFilesize
8KB
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memory/1056-5-0x000007FEF67C0000-0x000007FEF6A3A000-memory.dmpFilesize
2.5MB
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memory/1856-2-0x000000002FA21000-0x000000002FA24000-memory.dmpFilesize
12KB
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memory/1856-3-0x00000000719D1000-0x00000000719D3000-memory.dmpFilesize
8KB
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memory/1856-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB