Analysis
- max time kernel
120s - max time network
123s - platform
windows7_x64 - resource
win7-20231025-en - resource tags
arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system - submitted
27/11/2023, 15:24
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
b92f9a4d53ddaa32a6a42d348744cabd.exe
Resource
win7-20231025-en
windows7-x64
14 signatures
150 seconds
Behavioral task
behavioral2
Sample
b92f9a4d53ddaa32a6a42d348744cabd.exe
Resource
win10v2004-20231023-en
windows10-2004-x64
16 signatures
150 seconds
General
- Target b92f9a4d53ddaa32a6a42d348744cabd.exe
- Size 289KB
- Sample231127-ss3zeshd83
- SHA256 0e1c1f54576e5ea6f024852228ef877537849db15a46633d77e36d8439e9609a
- MD5 b92f9a4d53ddaa32a6a42d348744cabd
- SHA1 d70ee7a27b5c376552c1f62d70efefc68d6d5a50
- SHA512 747ffb90b0744964ed3ebc459c9b965937e68ee52c554987e7af20b7769310594c92948f4e3db849ace24fff015b8663063e9ffcf7b604b11d036a3c67685d3e
- SSDEEP 3072:B52jCnuzHwEtL4O/S1NUATrBcN11F0p0alESA38ItQ5mESUem9Qj+/:3wCnu7wEtLp/MUATgv8IC/H
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Botnet
-
up4
Extracted
Family
-
smokeloader
Version
-
2020
C2
-
http://host-file-file0.com/
-
http://file-file-file1.com/
rc4.i32
rc4.i32
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Modifies Installed Components in the registry 2 TTPs 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe - Deletes itself 1 IoCs
pid Process 1212 Process not Found - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1620 set thread context of 2276 1620 b92f9a4d53ddaa32a6a42d348744cabd.exe 28 - Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b92f9a4d53ddaa32a6a42d348744cabd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b92f9a4d53ddaa32a6a42d348744cabd.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b92f9a4d53ddaa32a6a42d348744cabd.exe - Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff explorer.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2276 b92f9a4d53ddaa32a6a42d348744cabd.exe 2276 b92f9a4d53ddaa32a6a42d348744cabd.exe 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found 1212 Process not Found - Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 1212 Process not Found 2592 explorer.exe - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2276 b92f9a4d53ddaa32a6a42d348744cabd.exe - Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe Token: SeShutdownPrivilege 2592 explorer.exe - Suspicious use of FindShellTrayWindow 28 IoCs
pid Process 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe - Suspicious use of SendNotifyMessage 22 IoCs
pid Process 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe 2592 explorer.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1620 wrote to memory of 2276 1620 b92f9a4d53ddaa32a6a42d348744cabd.exe 28 PID 1620 wrote to memory of 2276 1620 b92f9a4d53ddaa32a6a42d348744cabd.exe 28 PID 1620 wrote to memory of 2276 1620 b92f9a4d53ddaa32a6a42d348744cabd.exe 28 PID 1620 wrote to memory of 2276 1620 b92f9a4d53ddaa32a6a42d348744cabd.exe 28 PID 1620 wrote to memory of 2276 1620 b92f9a4d53ddaa32a6a42d348744cabd.exe 28 PID 1620 wrote to memory of 2276 1620 b92f9a4d53ddaa32a6a42d348744cabd.exe 28 PID 1620 wrote to memory of 2276 1620 b92f9a4d53ddaa32a6a42d348744cabd.exe 28 - 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\b92f9a4d53ddaa32a6a42d348744cabd.exe"C:\Users\Admin\AppData\Local\Temp\b92f9a4d53ddaa32a6a42d348744cabd.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1620 -
C:\Users\Admin\AppData\Local\Temp\b92f9a4d53ddaa32a6a42d348744cabd.exe"C:\Users\Admin\AppData\Local\Temp\b92f9a4d53ddaa32a6a42d348744cabd.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2276
-
-
C:\Windows\explorer.exeexplorer.exe1⤵
- Modifies Installed Components in the registry
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2592