smokeloader | a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a

Analysis

max time kernel
146s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
03-07-2024 19:27

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General

Target

a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a.exe
Size

224KB
MD5

1a6a9b7a5e784c6ca40ee894f5c3ae70
SHA1

88c3f3ced16d3b2ffed0f0cb8c37eb3d39a3c70b
SHA256

a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a
SHA512

2e92c59262cf5ba6a979e95d8fa7db7a696057f347ca403efddf80896a27dda8fcb94a2166b5a22f9a1c0703ae9a708014fff80656c70e824e6e60ac259f8219
SSDEEP

3072:z/84BoZMyeq6umq/r+R4pgib+JbzLmAs+1CjBG3ywQzHadH0:zZkMqpmq/r+riM/LmAs+1yG3ywsad

Score

10^/10

smokeloader pub2 backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

pub2

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1868 3304 WerFault.exe a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a.exe

pid	pid_target	process	target process
1868	3304	WerFault.exe	a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a.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:

a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a.exe

C:\Users\Admin\AppData\Local\Temp\a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a.exe
"C:\Users\Admin\AppData\Local\Temp\a87bc31ea576b3c6cbc0d9a5970e39e4d842073b5b5b46930d99943590c33a3a.exe"
1⤵
- Checks SCSI registry key(s)
PID:3304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3304 -s 488
2⤵
- Program crash
PID:1868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3304 -ip 3304
1⤵
PID:2908

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/3304-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3304-1-0x0000000002D50000-0x0000000002E50000-memory.dmp

Filesize
1024KB

Download
memory/3304-2-0x0000000004900000-0x000000000490B000-memory.dmp

Filesize
44KB

Download
memory/3304-4-0x0000000000400000-0x0000000002BF1000-memory.dmp

Filesize
39.9MB

Download