Malware Analysis Report

2024-11-13 18:57

Sample ID 240221-fmba1abh3v
Target 9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961
SHA256 9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961
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

9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961

Threat Level: Known bad

The file 9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961 was found to be: Known bad.

Malicious Activity Summary

smokeloader pub3 backdoor trojan

SmokeLoader

Deletes itself

Executes dropped EXE

Unsigned PE

Checks SCSI registry key(s)

Uses Task Scheduler COM API

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-21 04:58

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-21 04:58

Reported

2024-02-21 05:04

Platform

win7-20231215-en

Max time kernel

300s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.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\wseshvd 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\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\wseshvd N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\wseshvd N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\wseshvd N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\wseshvd 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 2644 wrote to memory of 2628 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\wseshvd
PID 2644 wrote to memory of 2628 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\wseshvd
PID 2644 wrote to memory of 2628 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\wseshvd
PID 2644 wrote to memory of 2628 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\wseshvd

Processes

C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe

"C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {0D65349E-D5BB-4496-A2CD-F0BBCBDFB233} S-1-5-21-452311807-3713411997-1028535425-1000:OZEMQECW\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\wseshvd

C:\Users\Admin\AppData\Roaming\wseshvd

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
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

Files

memory/2352-1-0x0000000000500000-0x0000000000600000-memory.dmp

memory/2352-2-0x0000000000220000-0x000000000022B000-memory.dmp

memory/2352-3-0x0000000000400000-0x0000000000448000-memory.dmp

memory/2352-5-0x0000000000400000-0x0000000000448000-memory.dmp

memory/1248-4-0x0000000002D20000-0x0000000002D36000-memory.dmp

memory/2352-8-0x0000000000220000-0x000000000022B000-memory.dmp

C:\Users\Admin\AppData\Roaming\wseshvd

MD5 d81520466e20cd92e3e5bb6602608925
SHA1 842af15ea1700297dfbd128193c7f7ea4e319802
SHA256 9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961
SHA512 fbe6d164985a96b97ad9552a6d319dfe60315e070c904bc2d68157dfaca9823e4e1e17dc3c6adef489b98e3fa160f62c92a6ae0c923866a40f58ea8077a34710

memory/2628-15-0x0000000000530000-0x0000000000630000-memory.dmp

memory/2628-16-0x0000000000400000-0x0000000000448000-memory.dmp

memory/1248-17-0x0000000003A10000-0x0000000003A26000-memory.dmp

memory/2628-18-0x0000000000400000-0x0000000000448000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-21 04:58

Reported

2024-02-21 05:03

Platform

win10-20240214-en

Max time kernel

300s

Max time network

292s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.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\sfwfwte N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sfwfwte N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sfwfwte N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sfwfwte N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\sfwfwte 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\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe

"C:\Users\Admin\AppData\Local\Temp\9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961.exe"

C:\Users\Admin\AppData\Roaming\sfwfwte

C:\Users\Admin\AppData\Roaming\sfwfwte

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjyey.com udp
PE 190.12.87.61:80 sjyey.com tcp
US 8.8.8.8:53 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.0.8.0.8.0.8.0.ip6.arpa udp
US 8.8.8.8:53 61.87.12.190.in-addr.arpa udp
US 8.8.8.8:53 babonwo.ru udp
RU 91.189.114.29:80 babonwo.ru tcp
US 8.8.8.8:53 mth.com.ua udp
US 8.8.8.8:53 29.114.189.91.in-addr.arpa udp
US 8.8.8.8:53 piratia.pw udp
US 104.21.79.117:80 piratia.pw tcp
US 104.21.79.117:443 piratia.pw tcp
US 104.21.79.117:443 piratia.pw tcp
US 8.8.8.8:53 go-piratia.ru udp
US 8.8.8.8:53 117.79.21.104.in-addr.arpa udp
US 104.21.51.101:80 go-piratia.ru tcp
US 104.21.51.101:443 go-piratia.ru tcp
US 8.8.8.8:53 101.51.21.104.in-addr.arpa udp
US 8.8.8.8:53 34.197.79.40.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp

Files

memory/292-1-0x0000000000590000-0x0000000000690000-memory.dmp

memory/292-2-0x00000000001F0000-0x00000000001FB000-memory.dmp

memory/292-3-0x0000000000400000-0x0000000000448000-memory.dmp

memory/3300-4-0x0000000000DF0000-0x0000000000E06000-memory.dmp

memory/292-5-0x0000000000400000-0x0000000000448000-memory.dmp

C:\Users\Admin\AppData\Roaming\sfwfwte

MD5 d81520466e20cd92e3e5bb6602608925
SHA1 842af15ea1700297dfbd128193c7f7ea4e319802
SHA256 9ea6617c365fb501b9df0e3f7d1e1faae075e7f5d6fc6853c344380afc00c961
SHA512 fbe6d164985a96b97ad9552a6d319dfe60315e070c904bc2d68157dfaca9823e4e1e17dc3c6adef489b98e3fa160f62c92a6ae0c923866a40f58ea8077a34710

memory/4544-14-0x0000000000550000-0x0000000000650000-memory.dmp

memory/4544-15-0x0000000000400000-0x0000000000448000-memory.dmp

memory/3300-16-0x00000000027D0000-0x00000000027E6000-memory.dmp

memory/4544-17-0x0000000000400000-0x0000000000448000-memory.dmp