smokeloader | b0707ded6960936877cf4a2a4a5a7191894ea5c19ee70296e7004b5431f5044e

Analysis

max time kernel
150s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 09:56

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General

Target

db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe
Size

269KB
MD5

7ec5ca4d34f4e800463edf4efb264e9f
SHA1

ff0a96b1b3e5f28a9fd9a288c5f6f65e1b1f26fa
SHA256

db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc
SHA512

419570d3ff5e58ef4d2fceaeb9ea2135d5b6e9835cc74bdedd0e9690fe7f5182db53fd5a0aad174ad2a8dd7a3a8bbd83e925fdae522cff8b89977818a04eab3d
SSDEEP

3072:bQTHC0ctZI6461YHBe6Itf1/iTY6ce6pn++RcNLkBHgDK6gpRnUuEeAg0FujDFzP:bQFctlMQMY6Vo++E0R6gFAOp9Z+g35

Score

10^/10

smokeloader backdoor trojan

Malware Config

Extracted

Family

smokeloader

Version

2022

http://77.91.68.29/fks/

rc4.i32

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe

description	pid	process	target process
PID 2200 set thread context of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2628 2200 WerFault.exe db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe

pid	pid_target	process	target process
2628	2200	WerFault.exe	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

AppLaunch.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

AppLaunch.exe

pid	process
1352	AppLaunch.exe
1352	AppLaunch.exe
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Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

AppLaunch.exe

pid process

1352 AppLaunch.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe

description	pid	process	target process
PID 2200 wrote to memory of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe
PID 2200 wrote to memory of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe
PID 2200 wrote to memory of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe
PID 2200 wrote to memory of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe
PID 2200 wrote to memory of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe
PID 2200 wrote to memory of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe
PID 2200 wrote to memory of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe
PID 2200 wrote to memory of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe
PID 2200 wrote to memory of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe
PID 2200 wrote to memory of 1352	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	AppLaunch.exe
PID 2200 wrote to memory of 2628	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	WerFault.exe
PID 2200 wrote to memory of 2628	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	WerFault.exe
PID 2200 wrote to memory of 2628	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	WerFault.exe
PID 2200 wrote to memory of 2628	2200	db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe	WerFault.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe
"C:\Users\Admin\AppData\Local\Temp\db77a8c0688fc65498578d6fb53ea4154ece1d8d958e3b911f81835c8aa908dc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2200

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 92
2⤵
- Program crash
PID:2628

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/1260-5-0x0000000002AE0000-0x0000000002AF6000-memory.dmp

Filesize
88KB

Download
memory/1352-3-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1352-2-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1352-1-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1352-0-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1352-4-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1352-6-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download