Malware Analysis Report

2025-01-18 16:43

Sample ID 221001-3c3ntsbff6
Target 2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8
SHA256 2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8
Tags
isrstealer stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8

Threat Level: Known bad

The file 2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8 was found to be: Known bad.

Malicious Activity Summary

isrstealer stealer trojan

ISR Stealer

ISR Stealer payload

Suspicious use of SetThreadContext

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-10-01 23:23

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-01 23:22

Reported

2022-10-02 01:44

Platform

win7-20220901-en

Max time kernel

46s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer payload

Description Indicator Process Target
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: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1308 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1308 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1308 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1308 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1308 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1308 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1308 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1308 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe

"C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe"

C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe

"C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe"

Network

N/A

Files

memory/1308-54-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

memory/1308-55-0x0000000074180000-0x000000007472B000-memory.dmp

memory/1308-56-0x0000000074180000-0x000000007472B000-memory.dmp

memory/1844-57-0x00000000000C0000-0x0000000000102000-memory.dmp

memory/1844-58-0x00000000000C0000-0x0000000000102000-memory.dmp

memory/1844-60-0x00000000000C0000-0x0000000000102000-memory.dmp

memory/1844-63-0x0000000000401180-mapping.dmp

memory/1844-64-0x00000000000C0000-0x0000000000102000-memory.dmp

memory/1308-66-0x0000000074180000-0x000000007472B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-01 23:22

Reported

2022-10-02 01:44

Platform

win10v2004-20220901-en

Max time kernel

108s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer payload

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1760 wrote to memory of 2320 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1760 wrote to memory of 2320 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1760 wrote to memory of 2320 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1760 wrote to memory of 2320 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1760 wrote to memory of 2320 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1760 wrote to memory of 2320 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe
PID 1760 wrote to memory of 2320 N/A C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe

"C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe"

C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe

"C:\Users\Admin\AppData\Local\Temp\2725f195a28405f562832d8c180aee96e410c4f715b45fa1de754cb5f80f36a8.exe"

Network

Country Destination Domain Proto
US 52.182.141.63:443 tcp
FR 2.18.109.224:443 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 8.8.8.8:53 226.101.242.52.in-addr.arpa udp
US 93.184.221.240:80 tcp

Files

memory/1760-132-0x0000000074750000-0x0000000074D01000-memory.dmp

memory/1760-133-0x0000000074750000-0x0000000074D01000-memory.dmp

memory/2320-134-0x0000000000000000-mapping.dmp

memory/2320-136-0x0000000000D00000-0x0000000000D42000-memory.dmp

memory/1760-138-0x0000000074750000-0x0000000074D01000-memory.dmp