smokeloader | 17dcd596f892d31a220fba0fa1752b2442397d4aaec547a672d36fb1e533293d

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2023 12:31

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General

Target

file.exe
Size

295KB
MD5

8e2aa331b5a83da49e8ad2a5ebfe16ef
SHA1

f660843b6bd05f25fe28ef6f8223a38d5e5d7527
SHA256

17dcd596f892d31a220fba0fa1752b2442397d4aaec547a672d36fb1e533293d
SHA512

1abd604949e6e5a52de0b8ae18b3a0d7d59875b83fb7f7faef7719658c3d52a16706e0c199867929ed6cc290c0c8bc70758c2f4fa838129f0f6989e6b891658c
SSDEEP

3072:1l88VLE8LwYJejxRF3hh9Ion6xPVC2X3S8qas035phZO0mklmc2toiDTNg:P3ECrej93h0ZSO/6tDDTO

Score

10^/10

smokeloader lab backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

lab

Extracted

Family

smokeloader

Version

2020

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Suspicious use of SetThreadContext 1 IoCs

Processes:

file.exe

description pid process target process

PID 436 set thread context of 4456 436 file.exe file.exe

description	pid	process	target process
PID 436 set thread context of 4456	436	file.exe	file.exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

file.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

file.exe

pid	process
4456	file.exe
4456	file.exe
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

684
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

file.exe

pid process

4456 file.exe

pid	process
684

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

file.exe

description	pid	process	target process
PID 436 wrote to memory of 4456	436	file.exe	file.exe
PID 436 wrote to memory of 4456	436	file.exe	file.exe
PID 436 wrote to memory of 4456	436	file.exe	file.exe
PID 436 wrote to memory of 4456	436	file.exe	file.exe
PID 436 wrote to memory of 4456	436	file.exe	file.exe
PID 436 wrote to memory of 4456	436	file.exe	file.exe

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.
persistence

Query Registry
T1012

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:436

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:4456

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/436-135-0x0000000002C50000-0x0000000002C59000-memory.dmp

Filesize
36KB

Download
memory/684-137-0x00000000026A0000-0x00000000026B6000-memory.dmp

Filesize
88KB

Download
memory/4456-134-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4456-136-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4456-138-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download