Analysis
- max time kernel
151s - max time network
122s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system - submitted
30/03/2023, 00:49
Static task
static1
Behavioral task
behavioral1
Sample
setup.exe
Resource
win7-20230220-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
setup.exe
Resource
win10v2004-20230220-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target setup.exe
- Size 250KB
- Sample230330-a6dbtaca71
- SHA256 4d2d7253f92fabcfd3adc2b0f112f8ddde14c0e94b88c603fe332b2e5d77cd00
- MD5 639376664335231a89d68e63a091cf23
- SHA1 591946aa4917051b89305b73a981489fe3c43b47
- SHA512 aedac85f02b76cf5afe7784e3d5668fa821bb87c3c5f6fed73779090dbc865ad72f1b6588afee397ab28c84366da7eaa220977c2faab3cc597009d16b1b3a44d
- SSDEEP 3072:F9NHUpV5g8XLj5bzLXG5FEELTPvaI4nh1/wbsHEvDxdoegx4cj:ZHUj9Lj53LXKzYnToIH4xdc
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Botnet
-
lab
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 4668 hjccbjf 2544 hjccbjf - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3948 set thread context of 1436 3948 setup.exe 85 PID 4668 set thread context of 2544 4668 hjccbjf 94 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI hjccbjf Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI hjccbjf Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI hjccbjf - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1436 setup.exe 1436 setup.exe 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found 3216 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3216 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1436 setup.exe 2544 hjccbjf - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 3216 Process not Found Token: SeCreatePagefilePrivilege 3216 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3948 wrote to memory of 1436 3948 setup.exe 85 PID 3948 wrote to memory of 1436 3948 setup.exe 85 PID 3948 wrote to memory of 1436 3948 setup.exe 85 PID 3948 wrote to memory of 1436 3948 setup.exe 85 PID 3948 wrote to memory of 1436 3948 setup.exe 85 PID 3948 wrote to memory of 1436 3948 setup.exe 85 PID 4668 wrote to memory of 2544 4668 hjccbjf 94 PID 4668 wrote to memory of 2544 4668 hjccbjf 94 PID 4668 wrote to memory of 2544 4668 hjccbjf 94 PID 4668 wrote to memory of 2544 4668 hjccbjf 94 PID 4668 wrote to memory of 2544 4668 hjccbjf 94 PID 4668 wrote to memory of 2544 4668 hjccbjf 94 - 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\setup.exe"C:\Users\Admin\AppData\Local\Temp\setup.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3948 -
C:\Users\Admin\AppData\Local\Temp\setup.exe"C:\Users\Admin\AppData\Local\Temp\setup.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1436
-
-
C:\Users\Admin\AppData\Roaming\hjccbjfC:\Users\Admin\AppData\Roaming\hjccbjf1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4668 -
C:\Users\Admin\AppData\Roaming\hjccbjfC:\Users\Admin\AppData\Roaming\hjccbjf2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2544
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Roaming\hjccbjf
- Size 250KB
- SHA256 4d2d7253f92fabcfd3adc2b0f112f8ddde14c0e94b88c603fe332b2e5d77cd00
- MD5 639376664335231a89d68e63a091cf23
- SHA1 591946aa4917051b89305b73a981489fe3c43b47
- SHA512 aedac85f02b76cf5afe7784e3d5668fa821bb87c3c5f6fed73779090dbc865ad72f1b6588afee397ab28c84366da7eaa220977c2faab3cc597009d16b1b3a44d
- SSDEEP 3072:F9NHUpV5g8XLj5bzLXG5FEELTPvaI4nh1/wbsHEvDxdoegx4cj:ZHUj9Lj53LXKzYnToIH4xdc
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\hjccbjf
- Size 250KB
- SHA256 4d2d7253f92fabcfd3adc2b0f112f8ddde14c0e94b88c603fe332b2e5d77cd00
- MD5 639376664335231a89d68e63a091cf23
- SHA1 591946aa4917051b89305b73a981489fe3c43b47
- SHA512 aedac85f02b76cf5afe7784e3d5668fa821bb87c3c5f6fed73779090dbc865ad72f1b6588afee397ab28c84366da7eaa220977c2faab3cc597009d16b1b3a44d
- SSDEEP 3072:F9NHUpV5g8XLj5bzLXG5FEELTPvaI4nh1/wbsHEvDxdoegx4cj:ZHUj9Lj53LXKzYnToIH4xdc
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\hjccbjf
- Size 250KB
- SHA256 4d2d7253f92fabcfd3adc2b0f112f8ddde14c0e94b88c603fe332b2e5d77cd00
- MD5 639376664335231a89d68e63a091cf23
- SHA1 591946aa4917051b89305b73a981489fe3c43b47
- SHA512 aedac85f02b76cf5afe7784e3d5668fa821bb87c3c5f6fed73779090dbc865ad72f1b6588afee397ab28c84366da7eaa220977c2faab3cc597009d16b1b3a44d
- SSDEEP 3072:F9NHUpV5g8XLj5bzLXG5FEELTPvaI4nh1/wbsHEvDxdoegx4cj:ZHUj9Lj53LXKzYnToIH4xdc
- MD5 SHA1 SHA512 SSDEEP