Analysis
- max time kernel
160s - max time network
153s - platform
windows7_x64 - resource
win7-en-20211014 - submitted
13/11/2021, 19:21
Static task
static1
Behavioral task
behavioral1
Sample
21c90d672ce8b7f7b26a73a317a1e582.exe
Resource
win7-en-20211014
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
21c90d672ce8b7f7b26a73a317a1e582.exe
Resource
win10-en-20211104
windows10_x64
0 signatures
0 seconds
General
- Target 21c90d672ce8b7f7b26a73a317a1e582.exe
- Size 343KB
- Sample211113-x2ncjscdcm
- SHA256 6266bbc36a8b0d3046013224a77c22a79dd7f2e97d4d33689f76a92c6ab7f2f7
- MD5 21c90d672ce8b7f7b26a73a317a1e582
- SHA1 91545cc63b064b18a58d59934573dcb5931891de
- SHA512 6def31611a7d3054f8e300ec206b32a02f27085d980e84ba4b36736cbea4daefe467caef8a125e2c1b988295317590eb8a2a57c50da7e6e28eb4fd2045dbe787
- MD5 SHA1 SHA512
Score
10/10
Malware Config
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.
- Executes dropped EXE 2 IoCs
pid Process 1108 evjbuaw 960 evjbuaw - Deletes itself 1 IoCs
pid Process 1412 Process not Found - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1736 set thread context of 896 1736 21c90d672ce8b7f7b26a73a317a1e582.exe 28 PID 1108 set thread context of 960 1108 evjbuaw 31 - 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 evjbuaw Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI evjbuaw Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI evjbuaw Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 21c90d672ce8b7f7b26a73a317a1e582.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 21c90d672ce8b7f7b26a73a317a1e582.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 21c90d672ce8b7f7b26a73a317a1e582.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 896 21c90d672ce8b7f7b26a73a317a1e582.exe 896 21c90d672ce8b7f7b26a73a317a1e582.exe 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1412 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 896 21c90d672ce8b7f7b26a73a317a1e582.exe 960 evjbuaw - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1412 Process not Found 1412 Process not Found - Suspicious use of SendNotifyMessage 2 IoCs
pid Process 1412 Process not Found 1412 Process not Found - Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 1736 wrote to memory of 896 1736 21c90d672ce8b7f7b26a73a317a1e582.exe 28 PID 1736 wrote to memory of 896 1736 21c90d672ce8b7f7b26a73a317a1e582.exe 28 PID 1736 wrote to memory of 896 1736 21c90d672ce8b7f7b26a73a317a1e582.exe 28 PID 1736 wrote to memory of 896 1736 21c90d672ce8b7f7b26a73a317a1e582.exe 28 PID 1736 wrote to memory of 896 1736 21c90d672ce8b7f7b26a73a317a1e582.exe 28 PID 1736 wrote to memory of 896 1736 21c90d672ce8b7f7b26a73a317a1e582.exe 28 PID 1736 wrote to memory of 896 1736 21c90d672ce8b7f7b26a73a317a1e582.exe 28 PID 1996 wrote to memory of 1108 1996 taskeng.exe 30 PID 1996 wrote to memory of 1108 1996 taskeng.exe 30 PID 1996 wrote to memory of 1108 1996 taskeng.exe 30 PID 1996 wrote to memory of 1108 1996 taskeng.exe 30 PID 1108 wrote to memory of 960 1108 evjbuaw 31 PID 1108 wrote to memory of 960 1108 evjbuaw 31 PID 1108 wrote to memory of 960 1108 evjbuaw 31 PID 1108 wrote to memory of 960 1108 evjbuaw 31 PID 1108 wrote to memory of 960 1108 evjbuaw 31 PID 1108 wrote to memory of 960 1108 evjbuaw 31 PID 1108 wrote to memory of 960 1108 evjbuaw 31
Processes
-
C:\Users\Admin\AppData\Local\Temp\21c90d672ce8b7f7b26a73a317a1e582.exe"C:\Users\Admin\AppData\Local\Temp\21c90d672ce8b7f7b26a73a317a1e582.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1736 -
C:\Users\Admin\AppData\Local\Temp\21c90d672ce8b7f7b26a73a317a1e582.exe"C:\Users\Admin\AppData\Local\Temp\21c90d672ce8b7f7b26a73a317a1e582.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:896
-
-
C:\Windows\system32\taskeng.exetaskeng.exe {BB632901-81E6-41E5-89D6-D68E9C8898DA} S-1-5-21-2955169046-2371869340-1800780948-1000:UKNHJUQT\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1996 -
C:\Users\Admin\AppData\Roaming\evjbuawC:\Users\Admin\AppData\Roaming\evjbuaw2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1108 -
C:\Users\Admin\AppData\Roaming\evjbuawC:\Users\Admin\AppData\Roaming\evjbuaw3⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:960
-
-