Analysis
- max time kernel
150s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
25/12/2022, 04:48
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target file.exe
- Size 223KB
- Sample221225-fe4ycabb36
- SHA256 69f5c8c4aa06f434fdc5ff048ef30a2ceb5a3838bae87a9b88d91f2e77968450
- MD5 2ddea33e6c12ac98cbddd32b3625eeca
- SHA1 55ea65feee1331b6c22d72d56bfe2d1d9f22a5e1
- SHA512 293075b5a8693ffed530697bb47d931026f4856d311cd6f9f9a16cfd64e233fb8b8b525ca7a941b4413b2f886fc7cdd85bc9ab265b56dc9e04114d5263d30132
- SSDEEP 3072:3DmO/gLJ25MPibBXiGbAlaUN/3+yjJA0cauDeH4V2GARf/ln:RYLJpPitSGEDuyjm0caMebRn
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/4764-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4280-135-0x00000000007B0000-0x00000000007B9000-memory.dmp family_smokeloader behavioral2/memory/4764-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4764-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/344-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/344-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 3120 eugcshw 344 eugcshw - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4280 set thread context of 4764 4280 file.exe 80 PID 3120 set thread context of 344 3120 eugcshw 89 - Checks SCSI registry key(s) 3 TTPs 6 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 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI eugcshw Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI eugcshw Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI eugcshw - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4764 file.exe 4764 file.exe 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found 1108 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1108 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4764 file.exe 344 eugcshw - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 1108 Process not Found Token: SeCreatePagefilePrivilege 1108 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4280 wrote to memory of 4764 4280 file.exe 80 PID 4280 wrote to memory of 4764 4280 file.exe 80 PID 4280 wrote to memory of 4764 4280 file.exe 80 PID 4280 wrote to memory of 4764 4280 file.exe 80 PID 4280 wrote to memory of 4764 4280 file.exe 80 PID 4280 wrote to memory of 4764 4280 file.exe 80 PID 3120 wrote to memory of 344 3120 eugcshw 89 PID 3120 wrote to memory of 344 3120 eugcshw 89 PID 3120 wrote to memory of 344 3120 eugcshw 89 PID 3120 wrote to memory of 344 3120 eugcshw 89 PID 3120 wrote to memory of 344 3120 eugcshw 89 PID 3120 wrote to memory of 344 3120 eugcshw 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4280 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4764
-
-
C:\Users\Admin\AppData\Roaming\eugcshwC:\Users\Admin\AppData\Roaming\eugcshw1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3120 -
C:\Users\Admin\AppData\Roaming\eugcshwC:\Users\Admin\AppData\Roaming\eugcshw2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:344
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\eugcshw
- Size 223KB
- SHA256 69f5c8c4aa06f434fdc5ff048ef30a2ceb5a3838bae87a9b88d91f2e77968450
- MD5 2ddea33e6c12ac98cbddd32b3625eeca
- SHA1 55ea65feee1331b6c22d72d56bfe2d1d9f22a5e1
- SHA512 293075b5a8693ffed530697bb47d931026f4856d311cd6f9f9a16cfd64e233fb8b8b525ca7a941b4413b2f886fc7cdd85bc9ab265b56dc9e04114d5263d30132
- SSDEEP 3072:3DmO/gLJ25MPibBXiGbAlaUN/3+yjJA0cauDeH4V2GARf/ln:RYLJpPitSGEDuyjm0caMebRn
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\eugcshw
- Size 223KB
- SHA256 69f5c8c4aa06f434fdc5ff048ef30a2ceb5a3838bae87a9b88d91f2e77968450
- MD5 2ddea33e6c12ac98cbddd32b3625eeca
- SHA1 55ea65feee1331b6c22d72d56bfe2d1d9f22a5e1
- SHA512 293075b5a8693ffed530697bb47d931026f4856d311cd6f9f9a16cfd64e233fb8b8b525ca7a941b4413b2f886fc7cdd85bc9ab265b56dc9e04114d5263d30132
- SSDEEP 3072:3DmO/gLJ25MPibBXiGbAlaUN/3+yjJA0cauDeH4V2GARf/ln:RYLJpPitSGEDuyjm0caMebRn
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\eugcshw
- Size 223KB
- SHA256 69f5c8c4aa06f434fdc5ff048ef30a2ceb5a3838bae87a9b88d91f2e77968450
- MD5 2ddea33e6c12ac98cbddd32b3625eeca
- SHA1 55ea65feee1331b6c22d72d56bfe2d1d9f22a5e1
- SHA512 293075b5a8693ffed530697bb47d931026f4856d311cd6f9f9a16cfd64e233fb8b8b525ca7a941b4413b2f886fc7cdd85bc9ab265b56dc9e04114d5263d30132
- SSDEEP 3072:3DmO/gLJ25MPibBXiGbAlaUN/3+yjJA0cauDeH4V2GARf/ln:RYLJpPitSGEDuyjm0caMebRn
- MD5 SHA1 SHA512 SSDEEP