smokeloader | 54e4cf67ef383099affe0a67d2c4a8abf1fc80950c31dd2e9177a6486734dab4

Analysis

max time kernel
153s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06-12-2022 05:45

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General

Target

file.exe
Size

320KB
MD5

8ceb0bfffa0681d59d4243f8670b941a
SHA1

2804b70de8b09e652b894f3990f0767f73f9c787
SHA256

54e4cf67ef383099affe0a67d2c4a8abf1fc80950c31dd2e9177a6486734dab4
SHA512

13fa69799c3287b17159a758e903b7c28e635db491853766ca21810c0cccfc31b18f6ac6311811a838cf87e025551d4ef70a15e92d7b085b65b3ccc85eadea4a
SSDEEP

3072:JB8X2H4v+bKynVuqtLkOxkP9bB5ayDNrKMTuyCzx3ntX4ffIm28DHWJds0Svth:sEbKynNLkvP9be824uyM3tInXaF

Score

10^/10

smokeloader backdoor trojan

Malware Config

Signatures

Detects Smokeloader packer 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1536-56-0x0000000000402DD8-mapping.dmp	family_smokeloader
behavioral1/memory/1536-55-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/1504-59-0x0000000000020000-0x0000000000029000-memory.dmp	family_smokeloader
behavioral1/memory/1536-60-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral1/memory/1536-61-0x0000000000400000-0x0000000000409000-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 1504 set thread context of 1536 1504 file.exe file.exe

description	pid	process	target process
PID 1504 set thread context of 1536	1504	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 enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	file.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

file.exe

pid	process
1536	file.exe
1536	file.exe
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Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

file.exe

pid process

1536 file.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

file.exe

description	pid	process	target process
PID 1504 wrote to memory of 1536	1504	file.exe	file.exe
PID 1504 wrote to memory of 1536	1504	file.exe	file.exe
PID 1504 wrote to memory of 1536	1504	file.exe	file.exe
PID 1504 wrote to memory of 1536	1504	file.exe	file.exe
PID 1504 wrote to memory of 1536	1504	file.exe	file.exe
PID 1504 wrote to memory of 1536	1504	file.exe	file.exe
PID 1504 wrote to memory of 1536	1504	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:1504

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:1536

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/1504-54-0x00000000002E8000-0x00000000002FE000-memory.dmp

Filesize
88KB

Download
memory/1504-57-0x00000000002E8000-0x00000000002FE000-memory.dmp

Filesize
88KB

Download
memory/1504-59-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/1536-58-0x00000000768A1000-0x00000000768A3000-memory.dmp

Filesize
8KB

Download
memory/1536-56-0x0000000000402DD8-mapping.dmp

Download
memory/1536-55-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1536-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1536-61-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download