Analysis
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max time kernel
151s -
max time network
136s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
13-01-2022 02:37
Behavioral task
behavioral1
Sample
SecuriteInfo.com.Trojan.Skarlet.3.Gen.29101.7523.xlsm
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
SecuriteInfo.com.Trojan.Skarlet.3.Gen.29101.7523.xlsm
Resource
win10-en-20211208
General
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Target
SecuriteInfo.com.Trojan.Skarlet.3.Gen.29101.7523.xlsm
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Size
83KB
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MD5
044c399cb95459d89ce15247a7f4fb0b
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SHA1
0621fb8e28e870a5b13229a2a18758ce306c9896
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SHA256
60610dee4927e907b5a6a4ac49f8c921fa8af7005b2e8deb2b26ffcc1cac6322
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SHA512
9362ecf9910eceb607f82d3af4e176b4dc51c9164904456ca4083a8a7140ac3c585bc021938bc12bfbce8d648992e3c0693d53a09bdda9d37536c65b4ec34233
Malware Config
Extracted
http://yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/
http://laserjetprintersreview.xyz/wp-includes/BJ6yUJ/
http://2021.posadamision.com/wp-admin/IoqaL08/
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\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3028 508 rundll32.exe EXCEL.EXE -
Downloads MZ/PE file
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Loads dropped DLL 2 IoCs
Processes:
rundll32.exerundll32.exepid process 3028 rundll32.exe 2484 rundll32.exe -
Drops file in System32 directory 1 IoCs
Processes:
rundll32.exedescription ioc process File opened for modification C:\Windows\SysWOW64\Epbyssdyizfz\qmmxs.vzy rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 508 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 508 EXCEL.EXE 508 EXCEL.EXE 508 EXCEL.EXE 508 EXCEL.EXE 508 EXCEL.EXE 508 EXCEL.EXE 508 EXCEL.EXE 508 EXCEL.EXE 508 EXCEL.EXE 508 EXCEL.EXE 508 EXCEL.EXE 508 EXCEL.EXE -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
EXCEL.EXErundll32.exerundll32.exedescription pid process target process PID 508 wrote to memory of 3028 508 EXCEL.EXE rundll32.exe PID 508 wrote to memory of 3028 508 EXCEL.EXE rundll32.exe PID 508 wrote to memory of 3028 508 EXCEL.EXE rundll32.exe PID 3028 wrote to memory of 2484 3028 rundll32.exe rundll32.exe PID 3028 wrote to memory of 2484 3028 rundll32.exe rundll32.exe PID 3028 wrote to memory of 2484 3028 rundll32.exe rundll32.exe PID 2484 wrote to memory of 2124 2484 rundll32.exe rundll32.exe PID 2484 wrote to memory of 2124 2484 rundll32.exe rundll32.exe PID 2484 wrote to memory of 2124 2484 rundll32.exe rundll32.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Skarlet.3.Gen.29101.7523.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:508 -
C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe ..\dwa.ocx,D"&"l"&"lR"&"egister"&"Server2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3028 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\dwa.ocx",DllRegisterServer3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2484 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Epbyssdyizfz\qmmxs.vzy",zsGu4⤵PID:2124
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\dwa.ocxMD5
b382aed028501715fcbb990ce05447fa
SHA1dd0a4e428cc7ad05df52c99b61dd36674f8e2ace
SHA2566e5cdf12d97aa6f56a60dd821f7cf0a6c7ccdda781e33dfc609504e252c296fa
SHA512e94bb16691459be336f8c1e5f6fd5d8c0b4c4c5d541f8be3fd27fccf685ecb6f6506e9c251f6eecd46c3eaf34f5d1a39a73cf412c1e89ce22e3ee3be401b24f4
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\Users\Admin\dwa.ocxMD5
b382aed028501715fcbb990ce05447fa
SHA1dd0a4e428cc7ad05df52c99b61dd36674f8e2ace
SHA2566e5cdf12d97aa6f56a60dd821f7cf0a6c7ccdda781e33dfc609504e252c296fa
SHA512e94bb16691459be336f8c1e5f6fd5d8c0b4c4c5d541f8be3fd27fccf685ecb6f6506e9c251f6eecd46c3eaf34f5d1a39a73cf412c1e89ce22e3ee3be401b24f4
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\Users\Admin\dwa.ocxMD5
b382aed028501715fcbb990ce05447fa
SHA1dd0a4e428cc7ad05df52c99b61dd36674f8e2ace
SHA2566e5cdf12d97aa6f56a60dd821f7cf0a6c7ccdda781e33dfc609504e252c296fa
SHA512e94bb16691459be336f8c1e5f6fd5d8c0b4c4c5d541f8be3fd27fccf685ecb6f6506e9c251f6eecd46c3eaf34f5d1a39a73cf412c1e89ce22e3ee3be401b24f4
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memory/508-119-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmpFilesize
64KB
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memory/508-116-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmpFilesize
64KB
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memory/508-120-0x0000013B99410000-0x0000013B99412000-memory.dmpFilesize
8KB
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memory/508-121-0x0000013B99410000-0x0000013B99412000-memory.dmpFilesize
8KB
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memory/508-122-0x0000013B99410000-0x0000013B99412000-memory.dmpFilesize
8KB
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memory/508-128-0x00007FFB36410000-0x00007FFB36420000-memory.dmpFilesize
64KB
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memory/508-129-0x00007FFB36410000-0x00007FFB36420000-memory.dmpFilesize
64KB
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memory/508-118-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmpFilesize
64KB
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memory/508-117-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmpFilesize
64KB
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memory/508-115-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmpFilesize
64KB
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memory/2124-286-0x0000000000000000-mapping.dmp
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memory/2484-280-0x0000000000000000-mapping.dmp
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memory/2484-285-0x00000000004D0000-0x000000000061A000-memory.dmpFilesize
1.3MB
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memory/3028-282-0x0000000003190000-0x00000000031B9000-memory.dmpFilesize
164KB
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memory/3028-273-0x0000000000000000-mapping.dmp