isrstealer | aaf73a75ab5d1e2532f0a450681b30a517ef7615e6b8c99a4c472db21e56b0ad | Triage

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Overview

overview

Static

static

aaf73a75ab...ad.exe

windows7-x64

aaf73a75ab...ad.exe

windows10-2004-x64

8

Sharing

General

Target

aaf73a75ab5d1e2532f0a450681b30a517ef7615e6b8c99a4c472db21e56b0ad
Size

647KB
Sample

221106-jnvb2sdaej
MD5

127019d89fc4b4e83c0d2b757b8a4e70
SHA1

0115e3e2de4776861fe220ae6bd2a67efaad2ab8
SHA256

aaf73a75ab5d1e2532f0a450681b30a517ef7615e6b8c99a4c472db21e56b0ad
SHA512

dc941c2aede3202c85776e18149dacf07948bdea9601ce40fd037aab946643e60243e9fdb0b0f086f50889d4d4adfb69776a58bcea14589880b3eebc7fd85388
SSDEEP

12288:uwdrj3aLlVPKvzLm74ATZnFNVtnCVTJbMEdwDbLCXjkZXEBW:zH3uKL3AVFNjnomEdULqjKXE

Score

10^/10

isrstealer evasion persistence spyware stealer trojan upx

Static task

static1

Behavioral task

behavioral1

Sample

aaf73a75ab5d1e2532f0a450681b30a517ef7615e6b8c99a4c472db21e56b0ad.exe

Resource

win7-20220812-en

isrstealer evasion persistence spyware stealer trojan upx

windows7-x64

11 signatures

150 seconds

Behavioral task

behavioral2

Sample

aaf73a75ab5d1e2532f0a450681b30a517ef7615e6b8c99a4c472db21e56b0ad.exe

Resource

win10v2004-20220812-en

evasion persistence

windows10-2004-x64

4 signatures

150 seconds

Malware Config

Targets

- Target
  
  aaf73a75ab5d1e2532f0a450681b30a517ef7615e6b8c99a4c472db21e56b0ad
- Size
  
  647KB
- MD5
  
  127019d89fc4b4e83c0d2b757b8a4e70
- SHA1
  
  0115e3e2de4776861fe220ae6bd2a67efaad2ab8
- SHA256
  
  aaf73a75ab5d1e2532f0a450681b30a517ef7615e6b8c99a4c472db21e56b0ad
- SHA512
  
  dc941c2aede3202c85776e18149dacf07948bdea9601ce40fd037aab946643e60243e9fdb0b0f086f50889d4d4adfb69776a58bcea14589880b3eebc7fd85388
- SSDEEP
  
  12288:uwdrj3aLlVPKvzLm74ATZnFNVtnCVTJbMEdwDbLCXjkZXEBW:zH3uKL3AVFNjnomEdULqjKXE
Score

10^/10

isrstealer evasion persistence spyware stealer trojan upx
- ISR Stealer
  ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
  trojan stealer isrstealer
- ISR Stealer payload
- Disables Task Manager via registry modification
  evasion
- UPX packed file
  Detects executables packed with UPX/modified UPX open source packer.
  upx
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- Adds Run key to start application
  persistence
- Suspicious use of SetThreadContext
behavioral1 behavioral2

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Credentials in Files

Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

isrstealerevasionpersistencespywarestealertrojanupx

behavioral2

evasionpersistence

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