smokeloader | ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65dea

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-01-2025 19:02

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General

Target

ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe
Size

153KB
MD5

d03522eb73c5821b756cad356c5c18e0
SHA1

b9b07b9e9a70a236570c569ebaf4ee6cd1f7e74a
SHA256

ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65dea
SHA512

309feee097f7f0b0844cc5120d7b8ed087b5d06233b6a55d15e353f39e3d7e49449bcc3cc19aa77bf5fefc0190d152ec594ffade99633a09d83693e09f6ce882
SSDEEP

3072:ETYpZuF8Ztvu/pQuQweBRce7ePeQH9WW:ETDwRuhdCkPeQHv

Score

10^/10

smokeloader new2 backdoor discovery trojan upx

Malware Config

Extracted

Family

smokeloader

Botnet

new2

Signatures

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

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2420 set thread context of 1256	2420	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe	30

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2420-6-0x0000000000400000-0x000000000578A000-memory.dmp	upx
behavioral1/memory/2420-3-0x0000000000400000-0x000000000578A000-memory.dmp	upx

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 1256	2420	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe	30
PID 2420 wrote to memory of 1256	2420	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe	30
PID 2420 wrote to memory of 1256	2420	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe	30
PID 2420 wrote to memory of 1256	2420	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe	30
PID 2420 wrote to memory of 1256	2420	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe	30
PID 2420 wrote to memory of 1256	2420	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe	30
PID 2420 wrote to memory of 1256	2420	ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe	30

C:\Users\Admin\AppData\Local\Temp\ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe
"C:\Users\Admin\AppData\Local\Temp\ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Users\Admin\AppData\Local\Temp\ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe
  "C:\Users\Admin\AppData\Local\Temp\ef059b331095741327d4ee779f61ad65a2054e169b7310f50751c4b87bf65deaN.exe"
  2⤵
  - Maps connected drives based on registry
  PID:1256

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1256-2-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1256-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1256-4-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2420-5-0x00000000002E4000-0x00000000002EF000-memory.dmp

Filesize
44KB

Download
memory/2420-6-0x0000000000400000-0x000000000578A000-memory.dmp

Filesize
83.5MB

Download
memory/2420-3-0x0000000000400000-0x000000000578A000-memory.dmp

Filesize
83.5MB

Download
memory/2420-7-0x0000000000400000-0x000000000578A000-memory.dmp

Filesize
83.5MB

Download