Malware Analysis Report

2024-11-30 05:02

Sample ID 240409-psxwmaad2s
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

Deletes itself

Executes dropped EXE

Program crash

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

Suspicious use of UnmapMainImage

Checks SCSI registry key(s)

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

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 12:56

Platform

win7-20240221-en

Max time kernel

1200s

Max time network

838s

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\jerjtgh N/A
N/A N/A C:\Users\Admin\AppData\Roaming\jerjtgh N/A

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 enumerated \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\Roaming\jerjtgh N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\jerjtgh N/A
Key queried \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\jerjtgh N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\jerjtgh N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\jerjtgh N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\jerjtgh 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
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Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeShutdownPrivilege 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:\Windows\system32\taskeng.exe

taskeng.exe {CD8F87B2-6F74-404F-85D1-41E939DA1ECE} S-1-5-21-1658372521-4246568289-2509113762-1000:PIRBKNPS\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\jerjtgh

C:\Users\Admin\AppData\Roaming\jerjtgh

C:\Windows\system32\taskeng.exe

taskeng.exe {A79E10C1-586F-41E0-9A10-03A7DA09373D} S-1-5-21-1658372521-4246568289-2509113762-1000:PIRBKNPS\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\jerjtgh

C:\Users\Admin\AppData\Roaming\jerjtgh

Network

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

Files

memory/2152-1-0x0000000000250000-0x0000000000350000-memory.dmp

memory/2152-2-0x00000000001B0000-0x00000000001BB000-memory.dmp

memory/2152-3-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/1256-4-0x0000000002A90000-0x0000000002AA6000-memory.dmp

memory/2152-5-0x0000000000400000-0x00000000022D1000-memory.dmp

C:\Users\Admin\AppData\Roaming\jerjtgh

MD5 5cddaacf9782c030db128e3ebfd8f301
SHA1 71bae291b66ecfad6ee79ab150c9b4bdc676f06c
SHA256 6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23
SHA512 bee3cbdeac5a317f58ebb2d621740f8b7e81e47db236327cb0e908bc49886e320e30a95191470953177740f702adfe704a626325ddd2a33f10c8ec3060059797

memory/320-14-0x0000000002740000-0x0000000002840000-memory.dmp

memory/320-15-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/1256-16-0x0000000002930000-0x0000000002946000-memory.dmp

memory/320-17-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/3008-23-0x0000000002370000-0x0000000002470000-memory.dmp

memory/3008-24-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/1256-25-0x0000000002960000-0x0000000002976000-memory.dmp

memory/3008-28-0x0000000000400000-0x00000000022D1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-09 12:36

Reported

2024-04-09 12:58

Platform

win10-20240404-en

Max time kernel

1192s

Max time network

868s

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 -u -p 944 -s 492

Network

Country Destination Domain Proto
US 8.8.8.8:53 26.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 100.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 85.65.42.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/944-1-0x00000000024E0000-0x00000000025E0000-memory.dmp

memory/944-2-0x0000000002340000-0x000000000234B000-memory.dmp

memory/944-3-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/944-6-0x00000000024E0000-0x00000000025E0000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-09 12:36

Reported

2024-04-09 12:59

Platform

win10v2004-20240226-en

Max time kernel

1200s

Max time network

1160s

Command Line

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

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

Description Indicator Process Target
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Executes dropped EXE

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

Checks SCSI registry key(s)

Description Indicator Process Target
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\buefffb N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\buefffb 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
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\buefffb 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
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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\buefffb 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
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
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\buefffb

C:\Users\Admin\AppData\Roaming\buefffb

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 239.249.30.184.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.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 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 120.85.215.91.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 99.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 84.65.42.20.in-addr.arpa udp
US 8.8.8.8:53 selebration17io.io udp
RU 91.215.85.120:80 selebration17io.io tcp

Files

memory/1944-1-0x0000000002570000-0x0000000002670000-memory.dmp

memory/1944-2-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/1944-3-0x0000000004030000-0x000000000403B000-memory.dmp

memory/3204-5-0x00000000024F0000-0x0000000002506000-memory.dmp

memory/1944-4-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/1944-8-0x0000000000400000-0x00000000022D1000-memory.dmp

C:\Users\Admin\AppData\Roaming\buefffb

MD5 5cddaacf9782c030db128e3ebfd8f301
SHA1 71bae291b66ecfad6ee79ab150c9b4bdc676f06c
SHA256 6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23
SHA512 bee3cbdeac5a317f58ebb2d621740f8b7e81e47db236327cb0e908bc49886e320e30a95191470953177740f702adfe704a626325ddd2a33f10c8ec3060059797

memory/2040-15-0x0000000002300000-0x0000000002400000-memory.dmp

memory/2040-16-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/3204-17-0x0000000000760000-0x0000000000776000-memory.dmp

memory/2040-18-0x0000000000400000-0x00000000022D1000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2024-04-09 12:36

Reported

2024-04-09 12:59

Platform

win11-20240221-en

Max time kernel

1200s

Max time network

1174s

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\rdgvfej N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\rdgvfej N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\rdgvfej N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\rdgvfej 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
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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\rdgvfej 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
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege 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\rdgvfej

C:\Users\Admin\AppData\Roaming\rdgvfej

Network

Country Destination Domain Proto
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
RU 91.215.85.120:80 selebration17io.io tcp

Files

memory/1436-1-0x0000000002380000-0x0000000002480000-memory.dmp

memory/1436-2-0x0000000004120000-0x000000000412B000-memory.dmp

memory/1436-3-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/3184-4-0x0000000001330000-0x0000000001346000-memory.dmp

memory/1436-5-0x0000000000400000-0x00000000022D1000-memory.dmp

C:\Users\Admin\AppData\Roaming\rdgvfej

MD5 5cddaacf9782c030db128e3ebfd8f301
SHA1 71bae291b66ecfad6ee79ab150c9b4bdc676f06c
SHA256 6d533c8a98cee42c8f797a0b982a0be0da8d7503da8c42e8da10a88bfee9bf23
SHA512 bee3cbdeac5a317f58ebb2d621740f8b7e81e47db236327cb0e908bc49886e320e30a95191470953177740f702adfe704a626325ddd2a33f10c8ec3060059797

memory/3500-14-0x0000000002530000-0x0000000002630000-memory.dmp

memory/3500-15-0x0000000000400000-0x00000000022D1000-memory.dmp

memory/3184-16-0x00000000011E0000-0x00000000011F6000-memory.dmp

memory/3500-19-0x0000000000400000-0x00000000022D1000-memory.dmp