Malware Analysis Report

2024-11-30 05:02

Sample ID 240409-pswnkaac9z
Target 6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23
SHA256 6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23
Tags
smokeloader backdoor trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23

Threat Level: Known bad

The file 6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23 was found to be: Known bad.

Malicious Activity Summary

smokeloader backdoor trojan

SmokeLoader

Executes dropped EXE

Deletes itself

Program crash

Unsigned PE

Uses Task Scheduler COM API

Checks SCSI registry key(s)

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-09 12:36

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-09 12:36

Reported

2024-04-09 12:41

Platform

win7-20240215-en

Max time kernel

300s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

Description Indicator Process Target
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\ubchbts N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ubchbts N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ubchbts N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ubchbts N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\ubchbts N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A N/A N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2052 wrote to memory of 2396 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ubchbts
PID 2052 wrote to memory of 2396 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ubchbts
PID 2052 wrote to memory of 2396 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ubchbts
PID 2052 wrote to memory of 2396 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ubchbts

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe

"C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {C1AF57A3-BA4E-48E1-A9CC-E5A06390E6DA} S-1-5-21-2248906074-2862704502-246302768-1000:GHPZRGFC\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\ubchbts

C:\Users\Admin\AppData\Roaming\ubchbts

Network

Country Destination Domain Proto
US 8.8.8.8:53 selebration17io.io udp
RU 91.215.85.120:80 selebration17io.io tcp

Files

memory/1600-2-0x00000000003A0000-0x00000000003AB000-memory.dmp

memory/1600-1-0x0000000000230000-0x0000000000330000-memory.dmp

memory/1600-3-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/1088-4-0x0000000002560000-0x0000000002576000-memory.dmp

memory/1600-5-0x0000000000400000-0x00000000022D1000-memory.dmp

C:\Users\Admin\AppData\Roaming\ubchbts

MD5 5cddaacf9782c030db128e3ebfd8f301
SHA1 71bae291b66ecfad6ee79ab150c9b4bdc676f06c
SHA256 6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23
SHA512 bee3cbdeac5a317f58ebb2d621740f8b7e81e47db236327cb0e908bc49886e320e30a95191470953177740f702adfe704a626325ddd2a33f10c8ec3060059797

memory/2396-14-0x00000000002B0000-0x00000000003B0000-memory.dmp

memory/2396-15-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/1088-16-0x0000000002FB0000-0x0000000002FC6000-memory.dmp

memory/2396-19-0x0000000000400000-0x00000000022D1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-09 12:36

Reported

2024-04-09 12:41

Platform

win10-20240404-en

Max time kernel

291s

Max time network

263s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Checks SCSI registry key(s)

Description Indicator Process Target
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe

"C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4440 -s 492

Network

Country Destination Domain Proto
US 8.8.8.8:53 225.14.97.104.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 58.189.79.40.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp

Files

memory/4440-1-0x0000000002670000-0x0000000002770000-memory.dmp

memory/4440-2-0x0000000002410000-0x000000000241B000-memory.dmp

memory/4440-3-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/4440-6-0x0000000002670000-0x0000000002770000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-09 12:36

Reported

2024-04-09 12:41

Platform

win10v2004-20240226-en

Max time kernel

300s

Max time network

281s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

Description Indicator Process Target
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\djagava N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\djagava N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\djagava N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\djagava N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\djagava N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A N/A N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe

"C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe"

C:\Users\Admin\AppData\Roaming\djagava

C:\Users\Admin\AppData\Roaming\djagava

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 selebration17io.io udp
RU 91.215.85.120:80 selebration17io.io tcp
US 8.8.8.8:53 120.85.215.91.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/1684-1-0x0000000002560000-0x0000000002660000-memory.dmp

memory/1684-2-0x0000000004020000-0x000000000402B000-memory.dmp

memory/1684-3-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/3296-4-0x0000000001370000-0x0000000001386000-memory.dmp

memory/1684-5-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/1684-8-0x0000000004020000-0x000000000402B000-memory.dmp

C:\Users\Admin\AppData\Roaming\djagava

MD5 5cddaacf9782c030db128e3ebfd8f301
SHA1 71bae291b66ecfad6ee79ab150c9b4bdc676f06c
SHA256 6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23
SHA512 bee3cbdeac5a317f58ebb2d621740f8b7e81e47db236327cb0e908bc49886e320e30a95191470953177740f702adfe704a626325ddd2a33f10c8ec3060059797

memory/4168-15-0x00000000025B0000-0x00000000026B0000-memory.dmp

memory/4168-16-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/3296-17-0x00000000012E0000-0x00000000012F6000-memory.dmp

memory/4168-18-0x0000000000400000-0x00000000022D1000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2024-04-09 12:36

Reported

2024-04-09 12:41

Platform

win11-20240319-en

Max time kernel

211s

Max time network

286s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe

"C:\Users\Admin\AppData\Local\Temp\6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3136 -ip 3136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3136 -s 384

Network

Country Destination Domain Proto
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp

Files

memory/3136-1-0x0000000002450000-0x0000000002550000-memory.dmp

memory/3136-2-0x0000000002440000-0x000000000244B000-memory.dmp

memory/3136-3-0x0000000000400000-0x00000000022D1000-memory.dmp