smokeloader | 4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0

Analysis

max time kernel
301s
max time network
123s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
03/09/2023, 21:58

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General

Target

4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe
Size

245KB
MD5

3f8f5fca4372c7d1889b1294f78e2394
SHA1

21be72a7010b456c64444d247ef43c0f0616db72
SHA256

4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0
SHA512

99f8adcc9cd5cb3588e3b1457bc6cecef9764a9bbd4d27e53436f0b774e31df45227b11ffb3c38a7040d804e407cc3bbe6231b0acae4e8b2089001079feae3d2
SSDEEP

3072:g6tgzPSutyNF/OjsOYDexBHWsKNZi8zz4nwTOan87d:0RyesOlBHZOZi8zzawTBn8J

Score

10^/10

smokeloader pub1 backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2020

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32

Signatures

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

Deletes itself 1 IoCs

pid	Process
1256	Process not Found

Executes dropped EXE 2 IoCs

pid	Process
2856	sisdvvv
3036	sisdvvv

Loads dropped DLL 1 IoCs

pid	Process
2856	sisdvvv

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1672 set thread context of 2332	1672	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe	28
PID 2856 set thread context of 3036	2856	sisdvvv	33

Checks SCSI registry key(s) 3 TTPs 6 IoCs

SCSI 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 enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	sisdvvv
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	sisdvvv
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	sisdvvv
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2332	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe
2332	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found
1256	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1256	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2332	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe
3036	sisdvvv

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1256	Process not Found

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 2332	1672	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe	28
PID 1672 wrote to memory of 2332	1672	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe	28
PID 1672 wrote to memory of 2332	1672	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe	28
PID 1672 wrote to memory of 2332	1672	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe	28
PID 1672 wrote to memory of 2332	1672	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe	28
PID 1672 wrote to memory of 2332	1672	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe	28
PID 1672 wrote to memory of 2332	1672	4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe	28
PID 2652 wrote to memory of 2856	2652	taskeng.exe	32
PID 2652 wrote to memory of 2856	2652	taskeng.exe	32
PID 2652 wrote to memory of 2856	2652	taskeng.exe	32
PID 2652 wrote to memory of 2856	2652	taskeng.exe	32
PID 2856 wrote to memory of 3036	2856	sisdvvv	33
PID 2856 wrote to memory of 3036	2856	sisdvvv	33
PID 2856 wrote to memory of 3036	2856	sisdvvv	33
PID 2856 wrote to memory of 3036	2856	sisdvvv	33
PID 2856 wrote to memory of 3036	2856	sisdvvv	33
PID 2856 wrote to memory of 3036	2856	sisdvvv	33
PID 2856 wrote to memory of 3036	2856	sisdvvv	33

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\4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe
"C:\Users\Admin\AppData\Local\Temp\4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Users\Admin\AppData\Local\Temp\4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe
  "C:\Users\Admin\AppData\Local\Temp\4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0.exe"
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:2332

C:\Windows\system32\taskeng.exe
taskeng.exe {2817344A-CCD8-4567-8FC1-284D017C75E0} S-1-5-21-3185155662-718608226-894467740-1000:YETUIZPU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Users\Admin\AppData\Roaming\sisdvvv
  C:\Users\Admin\AppData\Roaming\sisdvvv
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2856
- - C:\Users\Admin\AppData\Roaming\sisdvvv
    C:\Users\Admin\AppData\Roaming\sisdvvv
    3⤵
    - Executes dropped EXE
    - Checks SCSI registry key(s)
    - Suspicious behavior: MapViewOfSection
    PID:3036

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\sisdvvv

Filesize
245KB

MD5
3f8f5fca4372c7d1889b1294f78e2394

SHA1
21be72a7010b456c64444d247ef43c0f0616db72

SHA256
4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0

SHA512
99f8adcc9cd5cb3588e3b1457bc6cecef9764a9bbd4d27e53436f0b774e31df45227b11ffb3c38a7040d804e407cc3bbe6231b0acae4e8b2089001079feae3d2

Download Submit
C:\Users\Admin\AppData\Roaming\sisdvvv

Filesize
245KB

MD5
3f8f5fca4372c7d1889b1294f78e2394

SHA1
21be72a7010b456c64444d247ef43c0f0616db72

SHA256
4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0

SHA512
99f8adcc9cd5cb3588e3b1457bc6cecef9764a9bbd4d27e53436f0b774e31df45227b11ffb3c38a7040d804e407cc3bbe6231b0acae4e8b2089001079feae3d2

Download Submit
C:\Users\Admin\AppData\Roaming\sisdvvv

Filesize
245KB

MD5
3f8f5fca4372c7d1889b1294f78e2394

SHA1
21be72a7010b456c64444d247ef43c0f0616db72

SHA256
4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0

SHA512
99f8adcc9cd5cb3588e3b1457bc6cecef9764a9bbd4d27e53436f0b774e31df45227b11ffb3c38a7040d804e407cc3bbe6231b0acae4e8b2089001079feae3d2

Download Submit
\Users\Admin\AppData\Roaming\sisdvvv

Filesize
245KB

MD5
3f8f5fca4372c7d1889b1294f78e2394

SHA1
21be72a7010b456c64444d247ef43c0f0616db72

SHA256
4acd3dfbdcedfe49f4d95a35592fa167333900f13e468d23128c4f787be713f0

SHA512
99f8adcc9cd5cb3588e3b1457bc6cecef9764a9bbd4d27e53436f0b774e31df45227b11ffb3c38a7040d804e407cc3bbe6231b0acae4e8b2089001079feae3d2

Download Submit
memory/1256-8-0x0000000002A20000-0x0000000002A36000-memory.dmp

Filesize
88KB

Download
memory/1256-24-0x0000000002A90000-0x0000000002AA6000-memory.dmp

Filesize
88KB

Download
memory/1672-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/1672-2-0x00000000001B0000-0x00000000001B9000-memory.dmp

Filesize
36KB

Download
memory/2332-7-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2332-9-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2332-6-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2332-5-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2332-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2856-19-0x0000000002090000-0x0000000002190000-memory.dmp

Filesize
1024KB

Download
memory/2856-28-0x0000000002090000-0x0000000002190000-memory.dmp

Filesize
1024KB

Download