smokeloader | 45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0 | Triage

Analysis

max time kernel
112s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
07-07-2022 10:38

Sharing

Report Analysis Logs

General

Target

45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
Size

184KB
MD5

ff120b666660d1159602b401d183bbc6
SHA1

c9e61809982b255c61e0240720c50979a0a8be8f
SHA256

45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0
SHA512

d2e95f076757d3af0215e5591569b61ec6c666b451ffba003b67fac9d5bb9f9c8551592f83b65c2901577ff3383467d0e1dd8fd1b1742ecbbf74ed5063df827c

Score

10^/10

smokeloader backdoor trojan

Malware Config

Extracted

Family

smokeloader

Version

2018

C2

http://klub11n.us/my/

rc4.i32

rc4.i32

Signatures

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

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

System Information Discovery

Processes:

45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe

description	pid	process	target process
PID 2796 set thread context of 484	2796	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe

Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe

pid	process
484	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
484	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe

pid	process
2796	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
2796	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
2796	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
2796	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe

description	pid	process	target process
PID 2796 wrote to memory of 484	2796	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
PID 2796 wrote to memory of 484	2796	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
PID 2796 wrote to memory of 484	2796	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
PID 2796 wrote to memory of 484	2796	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe	45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe

C:\Users\Admin\AppData\Local\Temp\45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
"C:\Users\Admin\AppData\Local\Temp\45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2796

C:\Users\Admin\AppData\Local\Temp\45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe
"C:\Users\Admin\AppData\Local\Temp\45d98cc3717877368dfd239949a424619f702c1c6170528b619815a2f00a78c0.exe"
2⤵
- Maps connected drives based on registry
- Suspicious behavior: MapViewOfSection
PID:484

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

Peripheral Device Discovery

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/484-131-0x0000000000000000-mapping.dmp

Download
memory/484-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2092-132-0x0000000000780000-0x0000000000795000-memory.dmp

Filesize
84KB

Download
memory/2796-130-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download