smokeloader | 4e5f3fb701c0ba7a67dfbe0f1578fd497769f2d3397cc6310a444e9e0740afb6

Analysis

max time kernel
151s
max time network
151s
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 01:15

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General

Target

setup.exe
Size

250KB
MD5

04e32b3bd11f6233afb0e106da867aa8
SHA1

c4750a98073df743fe04bf542df0faee2bdea4c5
SHA256

4e5f3fb701c0ba7a67dfbe0f1578fd497769f2d3397cc6310a444e9e0740afb6
SHA512

233f6d94ab81501e652cc6dd326f61416b37429b068dd0105951c8f8f01e61f57f27b20492309858e188d8cb639e34fecc0e0b9880bd846e3e5fac4420356c16
SSDEEP

3072:nVuaHyfVd/lxLLqfe5FRPN4pdWBVAyeO3jBJr2GOOIpzjdwj5Ev/Hc:oOyfJxLeEidnGOTFjb

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:

setup.exe

description pid process target process

PID 3208 set thread context of 2380 3208 setup.exe setup.exe

description	pid	process	target process
PID 3208 set thread context of 2380	3208	setup.exe	setup.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:

setup.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

setup.exe

pid	process
2380	setup.exe
2380	setup.exe
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

3148
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

setup.exe

pid process

2380 setup.exe

pid	process
3148

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

setup.exe

description	pid	process	target process
PID 3208 wrote to memory of 2380	3208	setup.exe	setup.exe
PID 3208 wrote to memory of 2380	3208	setup.exe	setup.exe
PID 3208 wrote to memory of 2380	3208	setup.exe	setup.exe
PID 3208 wrote to memory of 2380	3208	setup.exe	setup.exe
PID 3208 wrote to memory of 2380	3208	setup.exe	setup.exe
PID 3208 wrote to memory of 2380	3208	setup.exe	setup.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\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3208

C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2380

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/2380-134-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2380-136-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2380-138-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3148-137-0x0000000000A40000-0x0000000000A56000-memory.dmp

Filesize
88KB

Download
memory/3208-135-0x00000000001F0000-0x00000000001F9000-memory.dmp

Filesize
36KB

Download