Analysis
- max time kernel
148s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
31/10/2022, 04:26
General
- Target file.exe
- Size 326KB
- Sample221031-e2hsysabb7
- SHA256 b8b36f9b4df37140b223bf5231e8c8ee77f8f7626e6d2d07e402b427d398e52d
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 3 IoCs
- Downloads MZ/PE file
- Executes dropped EXE 4 IoCs
- Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 32 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 60 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\CFD3.exeC:\Users\Admin\AppData\Local\Temp\CFD3.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 6282⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 8962⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 9722⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 11122⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 11402⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 11402⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 11722⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\CFD3.exe"C:\Users\Admin\AppData\Local\Temp\CFD3.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1316 -s 6003⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1316 -s 9683⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1316 -s 9803⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1316 -s 9803⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1316 -s 10643⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1316 -s 11043⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1316 -s 10963⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\CFD3.exe"C:\Users\Admin\AppData\Local\Temp\CFD3.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 6004⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 9684⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 9724⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 9684⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 10924⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 11164⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 10724⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 10884⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\CFD3.exe"C:\Users\Admin\AppData\Local\Temp\CFD3.exe"4⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 6005⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 9965⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 10045⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 10685⤵
- Program crash
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Dydhshsoe.dll,start4⤵
- Blocklisted process makes network request
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 10044⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 12724⤵
- Program crash
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Dydhshsoe.dll,start3⤵
- Blocklisted process makes network request
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1316 -s 10043⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1316 -s 12763⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 10482⤵
- Program crash
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Dydhshsoe.dll,start2⤵
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 13002⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4076 -ip 40761⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4076 -ip 40761⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4076 -ip 40761⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4076 -ip 40761⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 4076 -ip 40761⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4076 -ip 40761⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4076 -ip 40761⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4076 -ip 40761⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1316 -ip 13161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1316 -ip 13161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 1316 -ip 13161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1316 -ip 13161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1316 -ip 13161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 4076 -ip 40761⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1316 -ip 13161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1316 -ip 13161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 1316 -ip 13161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1316 -ip 13161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4972 -ip 49721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 4972 -ip 49721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 4972 -ip 49721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4972 -ip 49721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4972 -ip 49721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4972 -ip 49721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4972 -ip 49721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 4972 -ip 49721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4972 -ip 49721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4972 -ip 49721⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 2764 -ip 27641⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 2764 -ip 27641⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 2764 -ip 27641⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 2764 -ip 27641⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
CFD3.exe
CFD3.exe
CFD3.exe
CFD3.exe
CFD3.exe
Dydhshsoe.dll
Dydhshsoe.dll
Dydhshsoe.dll
Dydhshsoe.dll
memory/1068-165-0x0000000000400000-0x000000000074D000-memory.dmp
memory/1316-144-0x000000000360A000-0x0000000003BF4000-memory.dmp
memory/1316-145-0x0000000000400000-0x0000000003215000-memory.dmp
memory/1316-157-0x0000000000400000-0x0000000003215000-memory.dmp
memory/2560-167-0x0000000000400000-0x000000000074D000-memory.dmp
memory/2560-156-0x0000000000400000-0x000000000074D000-memory.dmp
memory/2668-160-0x0000000000400000-0x000000000074D000-memory.dmp
memory/2668-151-0x0000000000400000-0x000000000074D000-memory.dmp
memory/2764-169-0x0000000000400000-0x0000000003215000-memory.dmp
memory/2764-168-0x00000000034D2000-0x0000000003ABC000-memory.dmp
memory/3708-135-0x0000000000400000-0x0000000002C40000-memory.dmp
memory/3708-134-0x0000000000400000-0x0000000002C40000-memory.dmp
memory/3708-133-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/3708-132-0x0000000002EB3000-0x0000000002EC9000-memory.dmp
memory/4076-141-0x0000000000400000-0x0000000003215000-memory.dmp
memory/4076-148-0x0000000000400000-0x0000000003215000-memory.dmp
memory/4076-146-0x0000000000400000-0x0000000003215000-memory.dmp
memory/4076-140-0x0000000005460000-0x0000000005A80000-memory.dmp
memory/4076-139-0x00000000034CB000-0x0000000003AB5000-memory.dmp
memory/4972-159-0x0000000000400000-0x0000000003215000-memory.dmp
memory/4972-158-0x00000000037FD000-0x0000000003DE7000-memory.dmp
memory/4972-166-0x0000000000400000-0x0000000003215000-memory.dmp