smokeloader | 4c269e43d99dbd557bd75b79ddf1ca143d006de9b096936403e75b1178751f66

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-11-2024 13:01

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General

Target

keygen-step-4/f2217e5f.exe
Size

270KB
MD5

0388a1ce1bb8c076387b69ffcb3b40ec
SHA1

3ec08a53ec024d9be6346440848c37d0e0d7bb80
SHA256

448febc4311881856de2c237285907fe9470818e169946b0dbf1362f332e070a
SHA512

ea5af764d0373c8b9a5faf6d7094c76c9c321e227713bceecd49df50fa888e8fd04b1dfe16c4b75a8727717582b06383825e5d4317db1b875951ee240edd71d5
SSDEEP

6144:MUL2hXyOiNcsRx/wxqbeU5bpG2jre0vzUWop:/2hXpi6sRxjbeQbpG29vzUJp

Score

10^/10

smokeloader pub1 backdoor discovery trojan

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Smokeloader family
smokeloader
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2732 2104 WerFault.exe f2217e5f.exe
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
discovery

System Language Discovery
T1614.001

Processes:

f2217e5f.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f2217e5f.exe

pid	pid_target	process	target process
2732	2104	WerFault.exe	f2217e5f.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f2217e5f.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

f2217e5f.exe

description	pid	process	target process
PID 2104 wrote to memory of 2732	2104	f2217e5f.exe	WerFault.exe
PID 2104 wrote to memory of 2732	2104	f2217e5f.exe	WerFault.exe
PID 2104 wrote to memory of 2732	2104	f2217e5f.exe	WerFault.exe
PID 2104 wrote to memory of 2732	2104	f2217e5f.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\keygen-step-4\f2217e5f.exe
"C:\Users\Admin\AppData\Local\Temp\keygen-step-4\f2217e5f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 136
  2⤵
  - Program crash
  PID:2732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2104-1-0x0000000002C30000-0x0000000002D30000-memory.dmp

Filesize
1024KB

Download
memory/2104-2-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/2104-3-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/2104-5-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/2104-4-0x0000000000400000-0x0000000002B4E000-memory.dmp

Filesize
39.3MB

Download