Analysis
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max time kernel
69s -
max time network
122s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
26-01-2021 20:24
Behavioral task
behavioral1
Sample
case (166).xls
Resource
win7v20201028
General
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Target
case (166).xls
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Size
153KB
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MD5
44b43922e08e0e8e1ec65300b3b1aa74
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SHA1
ec1a847009295036381af1b0a4383a61c3dcbb75
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SHA256
9b8516fcbe183de0a53ac47ea7f4289176e23fc82da1fe67c70cedc823f5dba6
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SHA512
f54baff4c52037180433a6b246bbf773924327e8ebc641e7a896a2a7ee79ae4e9326984cbd646be73f9d5fa97f2b8e8e5e7628f277df70deb2cb9e7771f69356
Malware Config
Extracted
https://rnollg.com/kev/scfrd.dll
Extracted
zloader
kev
26/01
https://gadgetswolf.com/post.php
https://homesoapmolds.com/post.php
https://govemedico.tk/post.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 924 1852 rundll32.exe EXCEL.EXE -
Blocklisted process makes network request 3 IoCs
Processes:
msiexec.exeflow pid process 11 832 msiexec.exe 13 832 msiexec.exe 15 832 msiexec.exe -
Loads dropped DLL 4 IoCs
Processes:
rundll32.exepid process 924 rundll32.exe 924 rundll32.exe 924 rundll32.exe 924 rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
rundll32.exedescription pid process target process PID 924 set thread context of 832 924 rundll32.exe msiexec.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 (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\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE 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 (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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1852 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
msiexec.exedescription pid process Token: SeSecurityPrivilege 832 msiexec.exe Token: SeSecurityPrivilege 832 msiexec.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1852 EXCEL.EXE 1852 EXCEL.EXE 1852 EXCEL.EXE -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
EXCEL.EXErundll32.exedescription pid process target process PID 1852 wrote to memory of 924 1852 EXCEL.EXE rundll32.exe PID 1852 wrote to memory of 924 1852 EXCEL.EXE rundll32.exe PID 1852 wrote to memory of 924 1852 EXCEL.EXE rundll32.exe PID 1852 wrote to memory of 924 1852 EXCEL.EXE rundll32.exe PID 1852 wrote to memory of 924 1852 EXCEL.EXE rundll32.exe PID 1852 wrote to memory of 924 1852 EXCEL.EXE rundll32.exe PID 1852 wrote to memory of 924 1852 EXCEL.EXE rundll32.exe PID 924 wrote to memory of 832 924 rundll32.exe msiexec.exe PID 924 wrote to memory of 832 924 rundll32.exe msiexec.exe PID 924 wrote to memory of 832 924 rundll32.exe msiexec.exe PID 924 wrote to memory of 832 924 rundll32.exe msiexec.exe PID 924 wrote to memory of 832 924 rundll32.exe msiexec.exe PID 924 wrote to memory of 832 924 rundll32.exe msiexec.exe PID 924 wrote to memory of 832 924 rundll32.exe msiexec.exe PID 924 wrote to memory of 832 924 rundll32.exe msiexec.exe PID 924 wrote to memory of 832 924 rundll32.exe msiexec.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 (166).xls"1⤵
- 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.exe"C:\Windows\System32\rundll32.exe" C:\ProgramData\formnet.dll,DllRegisterServer2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\msiexec.exemsiexec.exe3⤵
- Blocklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
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\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
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\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
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\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
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\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
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memory/832-15-0x0000000000000000-mapping.dmp
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memory/832-17-0x0000000000090000-0x00000000000B6000-memory.dmpFilesize
152KB
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memory/924-7-0x00000000756C1000-0x00000000756C3000-memory.dmpFilesize
8KB
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memory/924-6-0x0000000000000000-mapping.dmp
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memory/924-13-0x0000000001D70000-0x0000000001D96000-memory.dmpFilesize
152KB
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memory/924-14-0x00000000001B0000-0x00000000001B1000-memory.dmpFilesize
4KB
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memory/1280-5-0x000007FEF77D0000-0x000007FEF7A4A000-memory.dmpFilesize
2.5MB
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memory/1852-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1852-2-0x000000002F3C1000-0x000000002F3C4000-memory.dmpFilesize
12KB
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memory/1852-3-0x0000000071681000-0x0000000071683000-memory.dmpFilesize
8KB