Malware Analysis Report

2024-11-13 18:57

Sample ID 240219-fel3jaaa88
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

Deletes itself

Executes dropped EXE

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Checks SCSI registry key(s)

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-19 04:47

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-19 04:47

Reported

2024-02-19 04:52

Platform

win7-20231215-en

Max time kernel

300s

Max time network

120s

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\efrdrbj N/A

Checks SCSI registry key(s)

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

Suspicious behavior: EnumeratesProcesses

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\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.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\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\efrdrbj N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1916 wrote to memory of 2144 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\efrdrbj
PID 1916 wrote to memory of 2144 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\efrdrbj
PID 1916 wrote to memory of 2144 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\efrdrbj
PID 1916 wrote to memory of 2144 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\efrdrbj

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\system32\taskeng.exe

taskeng.exe {1418EED2-CBF2-4FE6-8700-0C4AFB633B93} S-1-5-21-3818056530-936619650-3554021955-1000:SFVRQGEO\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\efrdrbj

C:\Users\Admin\AppData\Roaming\efrdrbj

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjyey.com udp
MK 95.86.30.3:80 sjyey.com tcp
MK 95.86.30.3:80 sjyey.com tcp
MK 95.86.30.3:80 sjyey.com tcp
MK 95.86.30.3:80 sjyey.com tcp
MK 95.86.30.3:80 sjyey.com tcp
MK 95.86.30.3:80 sjyey.com tcp
MK 95.86.30.3:80 sjyey.com tcp

Files

memory/1984-1-0x0000000000290000-0x0000000000390000-memory.dmp

memory/1984-2-0x00000000001B0000-0x00000000001BB000-memory.dmp

memory/1984-3-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1220-4-0x00000000024C0000-0x00000000024D6000-memory.dmp

memory/1984-5-0x0000000000400000-0x000000000044B000-memory.dmp

C:\Users\Admin\AppData\Roaming\efrdrbj

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

memory/2144-14-0x00000000004F0000-0x00000000005F0000-memory.dmp

memory/2144-15-0x0000000000400000-0x000000000044B000-memory.dmp

memory/1220-16-0x0000000002E70000-0x0000000002E86000-memory.dmp

memory/2144-17-0x0000000000400000-0x000000000044B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-19 04:47

Reported

2024-02-19 04:52

Platform

win10-20240214-en

Max time kernel

300s

Max time network

293s

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

Suspicious behavior: EnumeratesProcesses

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\Local\Temp\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.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\18d4c4325fa3930646e04f03a812ccc0c3b8907297db98317bde5a77fed7ea08.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\gertgcd 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\gertgcd

C:\Users\Admin\AppData\Roaming\gertgcd

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 sjyey.com udp
IR 151.233.51.166:80 sjyey.com tcp
IR 151.233.51.166:80 sjyey.com tcp
US 8.8.8.8:53 166.51.233.151.in-addr.arpa udp
IR 151.233.51.166:80 sjyey.com tcp
IR 151.233.51.166:80 sjyey.com tcp
IR 151.233.51.166:80 sjyey.com tcp
IR 151.233.51.166:80 sjyey.com tcp
IR 151.233.51.166:80 sjyey.com tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 10.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/2836-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

memory/2836-2-0x00000000004B0000-0x00000000004BB000-memory.dmp

memory/2836-3-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3396-4-0x0000000001090000-0x00000000010A6000-memory.dmp

memory/2836-5-0x0000000000400000-0x000000000044B000-memory.dmp

C:\Users\Admin\AppData\Roaming\gertgcd

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

memory/348-14-0x00000000006C0000-0x00000000007C0000-memory.dmp

memory/348-15-0x0000000000400000-0x000000000044B000-memory.dmp

memory/3396-16-0x0000000002C30000-0x0000000002C46000-memory.dmp

memory/348-19-0x0000000000400000-0x000000000044B000-memory.dmp