Malware Analysis Report

2024-11-13 18:57

Sample ID 240221-ffttrscc24
Target 18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08
SHA256 18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08
Tags
smokeloader pub3 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 Overview

score
10/10

SHA256

18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08

Threat Level: Known bad

The file 18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08 was found to be: Known bad.

Malicious Activity Summary

smokeloader pub3 backdoor trojan

SmokeLoader

Executes dropped EXE

Deletes itself

Unsigned PE

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Suspicious behavior: EnumeratesProcesses

Checks SCSI registry key(s)

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-21 04:49

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-21 04:49

Reported

2024-02-21 04:54

Platform

win7-20240215-en

Max time kernel

300s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.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\sawfagw N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sawfagw N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sawfagw N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sawfagw N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\sawfagw 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 2632 wrote to memory of 2416 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\sawfagw
PID 2632 wrote to memory of 2416 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\sawfagw
PID 2632 wrote to memory of 2416 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\sawfagw
PID 2632 wrote to memory of 2416 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\sawfagw

Processes

C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe

"C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {9DD027B0-3EDC-40B4-9851-84CC2ED3781F} S-1-5-21-2248906074-2862704502-246302768-1000:GHPZRGFC\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\sawfagw

C:\Users\Admin\AppData\Roaming\sawfagw

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjyey.com udp
CO 186.147.159.149:80 sjyey.com tcp
CO 186.147.159.149:80 sjyey.com tcp
CO 186.147.159.149:80 sjyey.com tcp
CO 186.147.159.149:80 sjyey.com tcp
CO 186.147.159.149:80 sjyey.com tcp
CO 186.147.159.149:80 sjyey.com tcp
CO 186.147.159.149:80 sjyey.com tcp

Files

memory/2908-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

memory/2908-2-0x0000000000220000-0x000000000022B000-memory.dmp

memory/2908-3-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1156-4-0x0000000002DF0000-0x0000000002E06000-memory.dmp

memory/2908-5-0x0000000000400000-0x000000000044B000-memory.dmp

C:\Users\Admin\AppData\Roaming\sawfagw

MD5 91279277b9cc7d43752c76dcaea5fce6
SHA1 5411e516c578887602f29e56294e841b854b8b7e
SHA256 18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08
SHA512 3f4fbd59734f694ce2079ac10769d34366ec3d376f166c406acda9dc71bfa203e1a958e96bd218c6b6c1f47c12600c4bfc137675b6b2d297eed2107c80064696

memory/2416-14-0x00000000005C0000-0x00000000006C0000-memory.dmp

memory/2416-15-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1156-16-0x0000000003D60000-0x0000000003D76000-memory.dmp

memory/2416-17-0x0000000000400000-0x000000000044B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-21 04:49

Reported

2024-02-21 04:54

Platform

win10-20240214-en

Max time kernel

300s

Max time network

297s

Command Line

"C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.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\juvwihb 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\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\juvwihb N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\juvwihb N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\juvwihb N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\juvwihb 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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe

"C:\Users\Admin\AppData\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe"

C:\Users\Admin\AppData\Roaming\juvwihb

C:\Users\Admin\AppData\Roaming\juvwihb

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjyey.com udp
KR 58.151.148.90:80 sjyey.com tcp
KR 58.151.148.90:80 sjyey.com tcp
US 8.8.8.8:53 90.148.151.58.in-addr.arpa udp
KR 58.151.148.90:80 sjyey.com tcp
KR 58.151.148.90:80 sjyey.com tcp
KR 58.151.148.90:80 sjyey.com tcp
KR 58.151.148.90:80 sjyey.com tcp
KR 58.151.148.90:80 sjyey.com tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 171.117.168.52.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp

Files

memory/4660-1-0x0000000000630000-0x0000000000730000-memory.dmp

memory/4660-2-0x0000000000580000-0x000000000058B000-memory.dmp

memory/4660-3-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3352-4-0x0000000001330000-0x0000000001346000-memory.dmp

memory/4660-5-0x0000000000400000-0x000000000044B000-memory.dmp

C:\Users\Admin\AppData\Roaming\juvwihb

MD5 91279277b9cc7d43752c76dcaea5fce6
SHA1 5411e516c578887602f29e56294e841b854b8b7e
SHA256 18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08
SHA512 3f4fbd59734f694ce2079ac10769d34366ec3d376f166c406acda9dc71bfa203e1a958e96bd218c6b6c1f47c12600c4bfc137675b6b2d297eed2107c80064696

memory/4328-14-0x00000000007B0000-0x00000000008B0000-memory.dmp

memory/4328-15-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3352-16-0x0000000003100000-0x0000000003116000-memory.dmp

memory/4328-19-0x0000000000400000-0x000000000044B000-memory.dmp