smokeloader | 1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-04-2024 16:09

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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-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Policies = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\euewvafe\\sjvtfwwc.exe"	explorer.exe

Deletes itself 1 IoCs

Processes:

explorer.exe

pid process

2936 explorer.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2936	explorer.exe

Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe

pid	process
2120	1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe
2120	1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe

description	pid	process	target process
PID 2120 wrote to memory of 2936	2120	1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe	explorer.exe
PID 2120 wrote to memory of 2936	2120	1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe	explorer.exe
PID 2120 wrote to memory of 2936	2120	1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe	explorer.exe
PID 2120 wrote to memory of 2936	2120	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:2120

C:\Windows\SysWOW64\explorer.exe
explorer.exe
2⤵
- Adds policy Run key to start application
- Deletes itself
PID:2936

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

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Downloads

memory/2120-6-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download
memory/2120-14-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download
memory/2120-2-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2120-3-0x0000000002460000-0x00000000024E0000-memory.dmp

Filesize
512KB

Download
memory/2120-4-0x00000000002D0000-0x00000000002E0000-memory.dmp

Filesize
64KB

Download
memory/2120-5-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/2120-1-0x0000000002460000-0x00000000024E0000-memory.dmp

Filesize
512KB

Download
memory/2120-7-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2120-0-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/2936-9-0x0000000000F00000-0x0000000001181000-memory.dmp

Filesize
2.5MB

Download
memory/2936-11-0x0000000000080000-0x000000000008A000-memory.dmp

Filesize
40KB

Download
memory/2936-10-0x0000000000F00000-0x0000000001181000-memory.dmp

Filesize
2.5MB

Download
memory/2936-19-0x0000000000080000-0x000000000008A000-memory.dmp

Filesize
40KB

Download
memory/2936-20-0x0000000000080000-0x000000000008A000-memory.dmp

Filesize
40KB

Download
memory/2936-22-0x0000000000080000-0x000000000008A000-memory.dmp

Filesize
40KB

Download