smokeloader | 9a5332f62b382da141cb5e72abe6b48f2b293e7f97367da0981908cdac532daf

Analysis

max time kernel
150s
max time network
106s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
06-02-2023 16:10

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General

Target

file.exe
Size

319KB
MD5

34482ccfec4adc294c97920e46b19bc9
SHA1

4e5aa8da8bd593e4e9de724b3968cf1ac3e2136d
SHA256

9a5332f62b382da141cb5e72abe6b48f2b293e7f97367da0981908cdac532daf
SHA512

364fb66e09667583a6041481b256cca3ada25feaeec632aea8c1213f8e24904740511208dc37821f67951cb5aed57688ffc294cc2f73d1948754991f19be3882
SSDEEP

3072:fzr/FLF5LbR60YDprphzm1gxHAMJV9KMm/LC1//+sxA7r09BOdMsjV:rRLrLg0YdrbSyNAYHKxjClRkcwjV

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4928-133-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/2956-135-0x00000000021A0000-0x00000000021A9000-memory.dmp	family_smokeloader
behavioral2/memory/4928-136-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/4928-137-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

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 2956 set thread context of 4928 2956 file.exe file.exe

description	pid	process	target process
PID 2956 set thread context of 4928	2956	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
4928	file.exe
4928	file.exe
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2476
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

file.exe

pid process

4928 file.exe

pid	process
2476

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

file.exe

description	pid	process	target process
PID 2956 wrote to memory of 4928	2956	file.exe	file.exe
PID 2956 wrote to memory of 4928	2956	file.exe	file.exe
PID 2956 wrote to memory of 4928	2956	file.exe	file.exe
PID 2956 wrote to memory of 4928	2956	file.exe	file.exe
PID 2956 wrote to memory of 4928	2956	file.exe	file.exe
PID 2956 wrote to memory of 4928	2956	file.exe	file.exe

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:2956

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:4928

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

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Downloads

memory/2956-134-0x00000000006AE000-0x00000000006C4000-memory.dmp

Filesize
88KB

Download
memory/2956-135-0x00000000021A0000-0x00000000021A9000-memory.dmp

Filesize
36KB

Download
memory/4928-132-0x0000000000000000-mapping.dmp

Download
memory/4928-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4928-136-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4928-137-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download