Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system - submitted
06/12/2022, 17:37
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
windows7-x64
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
16 signatures
150 seconds
General
- Target file.exe
- Size 376KB
- Sample221206-v65raacc2v
- SHA256 e592274078619a6f8a3d290dc55fb213b6d3fa847979fa3d964e39c17f05cba8
- MD5 d0090829c8af3fbc3c65f10008c0ebfc
- SHA1 793b08834e173a25ec83581ab21310fbdb8859fb
- SHA512 76e25fe040243d6bbe8b0d1ad701fa17f43b112bba63d259f986d7903533c692fe8b4f4a6a1d096169b7f4200a161a4132580ac52ab89983a1b99413ed1c4210
- SSDEEP 6144:iRkXZseYLAqqcgVfljVW5nXPThfpC89WcoBlCyDYLaV:iRQZLYUqqjw/RpCpcWCyDYL
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral2/memory/3736-133-0x00000000001F0000-0x00000000001F9000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 2 IoCs
flow pid Process 42 4468 rundll32.exe 43 4468 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
pid Process 3232 8B48.exe - Loads dropped DLL 1 IoCs
pid Process 4468 rundll32.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
pid pid_target Process procid_target 540 3232 WerFault.exe 90 - Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe - Checks processor information in registry 2 TTPs 24 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet rundll32.exe Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Component Information rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\VendorIdentifier rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Configuration Data rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Status rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Configuration Data rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Previous Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\~MHz rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Previous Update Revision rundll32.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3736 file.exe 3736 file.exe 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2440 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 3736 file.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2440 Process not Found Token: SeCreatePagefilePrivilege 2440 Process not Found - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2440 wrote to memory of 3232 2440 Process not Found 90 PID 2440 wrote to memory of 3232 2440 Process not Found 90 PID 2440 wrote to memory of 3232 2440 Process not Found 90 PID 3232 wrote to memory of 4468 3232 8B48.exe 92 PID 3232 wrote to memory of 4468 3232 8B48.exe 92 PID 3232 wrote to memory of 4468 3232 8B48.exe 92
Processes
-
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
PID:3736
-
C:\Users\Admin\AppData\Local\Temp\8B48.exeC:\Users\Admin\AppData\Local\Temp\8B48.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3232 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Eshwsfeuryqqffi.tmp",Qiysidaatietut2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Checks processor information in registry
PID:4468
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 5202⤵
- Program crash
PID:540
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3232 -ip 32321⤵PID:3336
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\8B48.exe
- Size 1.2MB
- SHA256 a94b2533deba9a71ee47f193123d853a556398fa15327a275754c30231666b6b
- MD5 7c67cd61807076e96d0bc5a6f794968f
- SHA1 2720e9ecf0f757a1bad96e149b5bdc69c42fe51b
- SHA512 947cf1b69e17c6741d8b44cd6273c9b64abccd7c543999f31c193c9fd7667637b93f866fb50b537304adaf34d2dfbefb97b829395ca758b639ca4f582e6c1376
- SSDEEP 24576:s5hSlUWyYycJ/3vsqWdBzTdzksjVrJqD/AcWCa:s5hQdfsq2X5jJAjAci
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\8B48.exe
- Size 1.2MB
- SHA256 a94b2533deba9a71ee47f193123d853a556398fa15327a275754c30231666b6b
- MD5 7c67cd61807076e96d0bc5a6f794968f
- SHA1 2720e9ecf0f757a1bad96e149b5bdc69c42fe51b
- SHA512 947cf1b69e17c6741d8b44cd6273c9b64abccd7c543999f31c193c9fd7667637b93f866fb50b537304adaf34d2dfbefb97b829395ca758b639ca4f582e6c1376
- SSDEEP 24576:s5hSlUWyYycJ/3vsqWdBzTdzksjVrJqD/AcWCa:s5hQdfsq2X5jJAjAci
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Eshwsfeuryqqffi.tmp
- Size 768KB
- SHA256 36cb491e91dc40d4a24f25944c5dca41195e1e7eb9788028f72e38b08789616d
- MD5 96655ec3277ef2e9ea4b5723f60f5b04
- SHA1 b29e9005cedc5e0d63981e59b05a12f006bd8640
- SHA512 cb151e071426cba0ec433b4ff8b173a9e07fc922e2b9d9d9359bcd5367a79e5bb996e8afbbfe4dd11bde1a33724b7f70479ac248762f5c9d17f3e0d7d67c151c
- SSDEEP 12288:mlsJvFZSII8oNXnoYjxKwnTvKNKX3U7KHOEPPV6Qo:3vSR8QoYjxzqKoKuIV6z
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Eshwsfeuryqqffi.tmp
- Size 768KB
- SHA256 36cb491e91dc40d4a24f25944c5dca41195e1e7eb9788028f72e38b08789616d
- MD5 96655ec3277ef2e9ea4b5723f60f5b04
- SHA1 b29e9005cedc5e0d63981e59b05a12f006bd8640
- SHA512 cb151e071426cba0ec433b4ff8b173a9e07fc922e2b9d9d9359bcd5367a79e5bb996e8afbbfe4dd11bde1a33724b7f70479ac248762f5c9d17f3e0d7d67c151c
- SSDEEP 12288:mlsJvFZSII8oNXnoYjxKwnTvKNKX3U7KHOEPPV6Qo:3vSR8QoYjxzqKoKuIV6z
- MD5 SHA1 SHA512 SSDEEP