Malware Analysis Report

2025-03-15 01:14

Sample ID 250213-mrqd2sxmfw
Target config.exe
SHA256 54deb76201d828c205a61f0b4e792ffa6c46aa617a4ae5802266d23da67e3799
Tags
silverrat execution 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 Overview

score
10/10

SHA256

54deb76201d828c205a61f0b4e792ffa6c46aa617a4ae5802266d23da67e3799

Threat Level: Known bad

The file config.exe was found to be: Known bad.

Malicious Activity Summary

silverrat execution trojan

Silverrat family

SilverRat

Checks computer location settings

Executes dropped EXE

Legitimate hosting services abused for malware hosting/C2

Command and Scripting Interpreter: PowerShell

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

Delays execution with timeout.exe

Scheduled Task/Job: Scheduled Task

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-02-13 10:42

Signatures

Silverrat family

silverrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-13 10:42

Reported

2025-02-13 10:42

Platform

win10ltsc2021-20250211-en

Max time kernel

4s

Max time network

7s

Command Line

"C:\Users\Admin\AppData\Local\Temp\config.exe"

Signatures

SilverRat

trojan silverrat

Silverrat family

silverrat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-156903528-2922517348-1168185335-1000\Control Panel\International\Geo\Nation C:\Users\Admin\discord\$77discord.exe.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\discord\$77discord.exe.exe N/A

Command and Scripting Interpreter: PowerShell

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

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Enumerates physical storage devices

Delays execution with timeout.exe

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

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\config.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\discord\$77discord.exe.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: 33 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: 34 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: 35 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: 36 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\discord\$77discord.exe.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\config.exe

"C:\Users\Admin\AppData\Local\Temp\config.exe"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB36.tmp.bat""

C:\Windows\system32\timeout.exe

timeout 3

C:\Users\Admin\discord\$77discord.exe.exe

"C:\Users\Admin\discord\$77discord.exe.exe"

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionExtension exe,bat,dll,ps1;exit

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /sc daily /tn "discord.exe_Task-DAILY-21PM" /TR "%MyFile%" /ST 21:00

Network

Country Destination Domain Proto
US 8.8.8.8:53 discord.com udp
US 162.159.136.232:443 discord.com tcp
US 8.8.8.8:53 pastebin.com udp
US 104.20.3.235:443 pastebin.com tcp
US 104.20.3.235:443 pastebin.com tcp
US 104.20.3.235:443 pastebin.com tcp

Files

memory/4936-0-0x00007FFACDE53000-0x00007FFACDE55000-memory.dmp

memory/4936-1-0x00000000001D0000-0x00000000001DE000-memory.dmp

memory/4936-2-0x00007FFACDE50000-0x00007FFACE912000-memory.dmp

memory/4936-8-0x00007FFACDE50000-0x00007FFACE912000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpB36.tmp.bat

MD5 4d1d7d72adbec60018be1df65a6cbed4
SHA1 45f62e5093133aeca7447c04c1b13378b1cc6f24
SHA256 c7cc17798ea8f3a0f4ef251d7ef60002a350d1a03d06cdef3e7716ea7d4708d2
SHA512 72872ad7935eea5e6f908daec6475ea1f26d73ef6dbc4f42b098a6d4bd739343a88c21447edae9b9f51e6c1582a74364ee0d50428f79343365e9ca60140e0c3b

C:\Users\Admin\discord\$77discord.exe.exe

MD5 82c63ff71723c1d7fd6d72ad6c38ca6f
SHA1 cebffc0a5145003e2d4ea9eeccf4911037505a36
SHA256 54deb76201d828c205a61f0b4e792ffa6c46aa617a4ae5802266d23da67e3799
SHA512 b780b1702b45d5f5c95f2c78e184ee9348ed667d686f1bdffd73c383d432ae44b6d228c3be0cb4e9c988940b1941fc342d063e826a53d757c98346f03e118c8d

memory/3496-12-0x00007FFACDE50000-0x00007FFACE912000-memory.dmp

memory/3496-13-0x00007FFACDE50000-0x00007FFACE912000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_csjlxf2m.fmj.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4824-20-0x0000020F149B0000-0x0000020F149D2000-memory.dmp