smokeloader | 1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc

Analysis

max time kernel
145s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22-04-2024 16:09

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe
Size

260KB
MD5

41c448b57f6dcf40b8f386f0a6787b04
SHA1

79fb684f1020df34971c3efc0177d2c90dfd1832
SHA256

1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc
SHA512

2c801614f76849d13c812abab1f1c47c62dd0f6e1c144b520a57c8a79fdb2d81fb655bfb27280b0f2d968dc1fc161a239c2634f5bcba732a8aa50760f24da1f1
SSDEEP

6144:6Pzon6O1k4ZmXquk9TrYQbhM4XXZy+gjLQz3jJ5Q2B:6PzojdmXqz9BhM4XZmjLs3j42B

Score

10^/10

smokeloader backdoor persistence trojan

Malware Config

Extracted

Family

smokeloader

Version

2017

http://requiremed.com/

http://epochtitle.com/

http://modifican.com/

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\RegisteredApplications = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\wvbafdfu\\grtdurgr.exe"	explorer.exe

Deletes itself 1 IoCs

Processes:

explorer.exe

pid process

3928 explorer.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3928	explorer.exe

Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe

pid	process
1640	1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe
1640	1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe

description	pid	process	target process
PID 1640 wrote to memory of 3928	1640	1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe	explorer.exe
PID 1640 wrote to memory of 3928	1640	1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe	explorer.exe
PID 1640 wrote to memory of 3928	1640	1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe	explorer.exe

C:\Users\Admin\AppData\Local\Temp\1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe
"C:\Users\Admin\AppData\Local\Temp\1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1640

C:\Windows\SysWOW64\explorer.exe
explorer.exe
2⤵
- Adds policy Run key to start application
- Deletes itself
PID:3928

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1640-8-0x0000000002380000-0x0000000002381000-memory.dmp

Filesize
4KB

Download
memory/1640-6-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/1640-2-0x0000000002380000-0x0000000002381000-memory.dmp

Filesize
4KB

Download
memory/1640-3-0x0000000002380000-0x0000000002381000-memory.dmp

Filesize
4KB

Download
memory/1640-0-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/1640-5-0x0000000002380000-0x0000000002390000-memory.dmp

Filesize
64KB

Download
memory/1640-1-0x00000000022F0000-0x0000000002370000-memory.dmp

Filesize
512KB

Download
memory/1640-7-0x0000000002680000-0x000000000268A000-memory.dmp

Filesize
40KB

Download
memory/1640-4-0x00000000022F0000-0x0000000002370000-memory.dmp

Filesize
512KB

Download
memory/1640-16-0x0000000002680000-0x000000000268A000-memory.dmp

Filesize
40KB

Download
memory/3928-12-0x0000000000EA0000-0x00000000012D3000-memory.dmp

Filesize
4.2MB

Download
memory/3928-13-0x0000000000A60000-0x0000000000A6A000-memory.dmp

Filesize
40KB

Download
memory/3928-10-0x0000000000EA0000-0x00000000012D3000-memory.dmp

Filesize
4.2MB

Download
memory/3928-20-0x0000000000A60000-0x0000000000A6A000-memory.dmp

Filesize
40KB

Download
memory/3928-21-0x0000000000A60000-0x0000000000A6A000-memory.dmp

Filesize
40KB

Download
memory/3928-24-0x0000000000A60000-0x0000000000A6A000-memory.dmp

Filesize
40KB

Download