smokeloader | 39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 14:46

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General

Target

39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657.exe
Size

228KB
MD5

6dd21638dac079e394096b1b018d5638
SHA1

b57f820d6bda6109f67155a5636965b034fd96d2
SHA256

39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657
SHA512

9b9d808236d9c432b9c9d87e5812daa99b3d0cf31c34da8477713dd575b5f0b9a05b362e367f530815a1e1a10789ae1aa93f9759e42fe309eea7f05b9a5e0d27
SSDEEP

3072:Ar9ft1WgkACOZVw+UmB4dlXny76VrY4TKQHBAgzVLK0ImGTXuVnuBZ40Uda:AEdtKyVHRxBBYDmeuRCZ40

Score

10^/10

smokeloader rbrn backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

rbrn

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

2700 2408 WerFault.exe 39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657.exe

pid	pid_target	process	target process
2700	2408	WerFault.exe	39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657.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:

39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657.exe

C:\Users\Admin\AppData\Local\Temp\39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657.exe
"C:\Users\Admin\AppData\Local\Temp\39f93bf9c8075a8fdf1e55593313db8dff9e2c234edc5b2854da91e83fa06657.exe"
1⤵
- Checks SCSI registry key(s)
PID:2408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2408 -s 264
2⤵
- Program crash
PID:2700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2408 -ip 2408
1⤵
PID:3936

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/2408-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/2408-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2408-2-0x00000000005F0000-0x00000000005FB000-memory.dmp

Filesize
44KB

Download
memory/2408-4-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download