Analysis
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max time kernel
150s -
max time network
152s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
13-03-2021 02:56
Behavioral task
behavioral1
Sample
sample (2).xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
sample (2).xls
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
sample (2).xls
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Size
138KB
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MD5
4c710e53b2bf06ba9533737d774f7e94
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SHA1
aad3ae14bd3ef0cd27324d18c50c6f5d76434214
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SHA256
25e329501f96c4e2fea65e7b716109583be3dd651b4e52872a64352220c3f424
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SHA512
c5615ebc6a15a15b2a92374f71bad70e700949e88f6acd622ba9d7054dd1c0a99170d855fb7130ea35f3ca15904726686d4c82cebee908a2f671c39ff328277f
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
http://bqx12lnjk03rrdio.xyz/i.gif
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 832 528 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 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 Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar 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\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 Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt 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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 528 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 528 EXCEL.EXE 528 EXCEL.EXE 528 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 528 wrote to memory of 832 528 EXCEL.EXE rundll32.exe PID 528 wrote to memory of 832 528 EXCEL.EXE rundll32.exe PID 528 wrote to memory of 832 528 EXCEL.EXE rundll32.exe PID 528 wrote to memory of 832 528 EXCEL.EXE rundll32.exe PID 528 wrote to memory of 832 528 EXCEL.EXE rundll32.exe PID 528 wrote to memory of 832 528 EXCEL.EXE rundll32.exe PID 528 wrote to memory of 832 528 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\sample (2).xls"1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:528 -
C:\Windows\SysWOW64\rundll32.exerundll32 ..\zfbfg.ere,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:832
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/528-2-0x000000002F7E1000-0x000000002F7E4000-memory.dmpFilesize
12KB
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memory/528-3-0x0000000071C01000-0x0000000071C03000-memory.dmpFilesize
8KB
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memory/528-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/832-6-0x0000000000000000-mapping.dmp
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memory/832-7-0x0000000075D01000-0x0000000075D03000-memory.dmpFilesize
8KB
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memory/1952-5-0x000007FEF7D40000-0x000007FEF7FBA000-memory.dmpFilesize
2.5MB