Malware Analysis Report

2024-11-13 18:57

Sample ID 240222-ffls6abg5w
Target 77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428
SHA256 77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428
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

77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428

Threat Level: Known bad

The file 77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428 was found to be: Known bad.

Malicious Activity Summary

smokeloader pub3 backdoor trojan

SmokeLoader

Executes dropped EXE

Deletes itself

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Checks SCSI registry key(s)

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-22 04:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-22 04:48

Reported

2024-02-22 04:54

Platform

win7-20240221-en

Max time kernel

300s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.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\afrifiv 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\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\afrifiv N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\afrifiv N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\afrifiv N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\afrifiv 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 2504 wrote to memory of 1976 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\afrifiv
PID 2504 wrote to memory of 1976 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\afrifiv
PID 2504 wrote to memory of 1976 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\afrifiv
PID 2504 wrote to memory of 1976 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\afrifiv

Processes

C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe

"C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {C7A08A51-5EBD-4221-BD25-E0DAFB7E3C3C} S-1-5-21-3452737119-3959686427-228443150-1000:QGTQZTRE\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\afrifiv

C:\Users\Admin\AppData\Roaming\afrifiv

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjyey.com udp
MX 201.119.117.233:80 sjyey.com tcp
MX 201.119.117.233:80 sjyey.com tcp
MX 201.119.117.233:80 sjyey.com tcp
MX 201.119.117.233:80 sjyey.com tcp
MX 201.119.117.233:80 sjyey.com tcp
MX 201.119.117.233:80 sjyey.com tcp

Files

memory/1968-1-0x0000000002E50000-0x0000000002F50000-memory.dmp

memory/1968-2-0x0000000000220000-0x000000000022B000-memory.dmp

memory/1968-3-0x0000000000400000-0x0000000002D35000-memory.dmp

memory/1968-5-0x0000000000400000-0x0000000002D35000-memory.dmp

memory/1200-4-0x0000000002F20000-0x0000000002F36000-memory.dmp

C:\Users\Admin\AppData\Roaming\afrifiv

MD5 100f4f22057827ac5d99eaf584e5b19e
SHA1 8114fa644df30503d6ea1f66b4ceb3a46be8722b
SHA256 77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428
SHA512 5da698636c2ec0530193c45314ee197c0f4ce984d7297a1cdfcb335489822dbd7a7d98f046452a2d7610dbc1497854a972a4791984ed897fc5b4861510048939

memory/1976-14-0x0000000002EE0000-0x0000000002FE0000-memory.dmp

memory/1976-15-0x0000000000400000-0x0000000002D35000-memory.dmp

memory/1200-16-0x00000000030A0000-0x00000000030B6000-memory.dmp

memory/1976-17-0x0000000000400000-0x0000000002D35000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-22 04:48

Reported

2024-02-22 04:54

Platform

win10-20240221-en

Max time kernel

300s

Max time network

255s

Command Line

"C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.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\rrbfvrr 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\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\rrbfvrr N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\rrbfvrr N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\rrbfvrr N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\rrbfvrr 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\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe

"C:\Users\Admin\AppData\Local\Temp\77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428.exe"

C:\Users\Admin\AppData\Roaming\rrbfvrr

C:\Users\Admin\AppData\Roaming\rrbfvrr

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjyey.com udp
MX 201.119.117.233:80 sjyey.com tcp
MX 201.119.117.233:80 sjyey.com tcp
MX 201.119.117.233:80 sjyey.com tcp
US 8.8.8.8:53 233.117.119.201.in-addr.arpa udp
MX 201.119.117.233:80 sjyey.com tcp
MX 201.119.117.233:80 sjyey.com tcp
MX 201.119.117.233:80 sjyey.com tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 27.178.89.13.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp

Files

memory/316-1-0x0000000002FC0000-0x00000000030C0000-memory.dmp

memory/316-2-0x0000000002DA0000-0x0000000002DAB000-memory.dmp

memory/316-3-0x0000000000400000-0x0000000002D35000-memory.dmp

memory/3388-4-0x00000000006E0000-0x00000000006F6000-memory.dmp

memory/316-5-0x0000000000400000-0x0000000002D35000-memory.dmp

C:\Users\Admin\AppData\Roaming\rrbfvrr

MD5 100f4f22057827ac5d99eaf584e5b19e
SHA1 8114fa644df30503d6ea1f66b4ceb3a46be8722b
SHA256 77d4e1a7b1dc1a646cb0955793d2cd8734d04d2f0ed48c8a72a029b94063a428
SHA512 5da698636c2ec0530193c45314ee197c0f4ce984d7297a1cdfcb335489822dbd7a7d98f046452a2d7610dbc1497854a972a4791984ed897fc5b4861510048939

memory/2824-14-0x0000000002E90000-0x0000000002F90000-memory.dmp

memory/2824-15-0x0000000000400000-0x0000000002D35000-memory.dmp

memory/3388-16-0x00000000022A0000-0x00000000022B6000-memory.dmp

memory/2824-17-0x0000000000400000-0x0000000002D35000-memory.dmp