Analysis
- max time kernel
300s - max time network
260s - platform
windows10-1703_x64 - resource
win10-20230915-en - resource tags
arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system - submitted
16/09/2023, 04:48
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
Resource
win7-20230831-en
windows7-x64
11 signatures
300 seconds
Behavioral task
behavioral2
Sample
8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
Resource
win10-20230915-en
windows10-1703-x64
11 signatures
300 seconds
General
- Target 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
- Size 267KB
- Sample230916-fe56eagh5y
- SHA256 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b
- MD5 94bc47f91a540c7d4f293bd3208ca79d
- SHA1 641aa079c31390ee951a0eb40ead4634d4180736
- SHA512 a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713
- SSDEEP 3072:NrW2PMtQv+oFD63pXAZwID4BhWL4M9ME7YvTYpBxMCOoQGbQpnxNBYrcxqbY:VW2pv+oFD63py6oD9MSxC7EQpNYrY
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Botnet
-
pub1
Extracted
Family
-
smokeloader
Version
-
2020
C2
-
http://host-file-host6.com/
-
http://host-host-file8.com/
rc4.i32
rc4.i32
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Deletes itself 1 IoCs
pid Process 3164 Process not Found - Executes dropped EXE 2 IoCs
pid Process 4428 gcuabfw 2096 gcuabfw - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 608 set thread context of 3936 608 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe 70 PID 4428 set thread context of 2096 4428 gcuabfw 72 - 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 gcuabfw Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI gcuabfw Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI gcuabfw Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3936 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe 3936 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found 3164 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3164 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 3936 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe 2096 gcuabfw - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeShutdownPrivilege 3164 Process not Found Token: SeCreatePagefilePrivilege 3164 Process not Found Token: SeShutdownPrivilege 3164 Process not Found Token: SeCreatePagefilePrivilege 3164 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 608 wrote to memory of 3936 608 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe 70 PID 608 wrote to memory of 3936 608 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe 70 PID 608 wrote to memory of 3936 608 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe 70 PID 608 wrote to memory of 3936 608 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe 70 PID 608 wrote to memory of 3936 608 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe 70 PID 608 wrote to memory of 3936 608 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe 70 PID 4428 wrote to memory of 2096 4428 gcuabfw 72 PID 4428 wrote to memory of 2096 4428 gcuabfw 72 PID 4428 wrote to memory of 2096 4428 gcuabfw 72 PID 4428 wrote to memory of 2096 4428 gcuabfw 72 PID 4428 wrote to memory of 2096 4428 gcuabfw 72 PID 4428 wrote to memory of 2096 4428 gcuabfw 72 - Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:608 -
C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3936
-
-
C:\Users\Admin\AppData\Roaming\gcuabfwC:\Users\Admin\AppData\Roaming\gcuabfw1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4428 -
C:\Users\Admin\AppData\Roaming\gcuabfwC:\Users\Admin\AppData\Roaming\gcuabfw2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2096
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\gcuabfw
- Size 267KB
- SHA256 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b
- MD5 94bc47f91a540c7d4f293bd3208ca79d
- SHA1 641aa079c31390ee951a0eb40ead4634d4180736
- SHA512 a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713
- SSDEEP 3072:NrW2PMtQv+oFD63pXAZwID4BhWL4M9ME7YvTYpBxMCOoQGbQpnxNBYrcxqbY:VW2pv+oFD63py6oD9MSxC7EQpNYrY
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\gcuabfw
- Size 267KB
- SHA256 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b
- MD5 94bc47f91a540c7d4f293bd3208ca79d
- SHA1 641aa079c31390ee951a0eb40ead4634d4180736
- SHA512 a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713
- SSDEEP 3072:NrW2PMtQv+oFD63pXAZwID4BhWL4M9ME7YvTYpBxMCOoQGbQpnxNBYrcxqbY:VW2pv+oFD63py6oD9MSxC7EQpNYrY
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\gcuabfw
- Size 267KB
- SHA256 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b
- MD5 94bc47f91a540c7d4f293bd3208ca79d
- SHA1 641aa079c31390ee951a0eb40ead4634d4180736
- SHA512 a589d56bf07e7de9a9a472766e764165789064e6c9dfb0b4bd10bdfe731d07ef994811b5b0327a4dbc3adb95d819dfa91a532b40c3646fcd748c3e5efc3f6713
- SSDEEP 3072:NrW2PMtQv+oFD63pXAZwID4BhWL4M9ME7YvTYpBxMCOoQGbQpnxNBYrcxqbY:VW2pv+oFD63py6oD9MSxC7EQpNYrY
- MD5 SHA1 SHA512 SSDEEP