isrstealer | 563dd975f0211df190d9c1ac1538c16ea3a82aba413f199b5b7000c08570a1e2 | Triage

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Reports

Overview

overview

Static

static

3

8c5f105eb2...18.exe

windows7-x64

8c5f105eb2...18.exe

windows10-2004-x64

Resubmissions

11/08/2024, 23:53 UTC

240811-3xms4svfql 10

11/08/2024, 23:16 UTC

240811-288paatekn 10

Sharing

General

Target

8c5f105eb24d29e66e1b89a734f0aada_JaffaCakes118
Size

240KB
Sample

240811-288paatekn
MD5

8c5f105eb24d29e66e1b89a734f0aada
SHA1

2d3fbdd86bd1e441f7050436e5eac56dade36541
SHA256

563dd975f0211df190d9c1ac1538c16ea3a82aba413f199b5b7000c08570a1e2
SHA512

b836ee8b2637d5122735618935caefa0d8359590357aa1ad90469f14028e9d1ce1edfa569aeb76bcf55895f253a7735f8891e9076570f79a45ae0bd4383e092b
SSDEEP

6144:wLa94GN7fiIEAeLHJx0ZW6x6FJzw4E5i3ZUp/yq0DASrikrhwKACS:wW94GN7fiIEAeLHJx0ZWJjjNJcyq8rzs

Score

10^/10

isrstealer bootkit credential_access discovery persistence spyware stealer trojan upx

Static task

static1

1 signatures

Behavioral task

behavioral1

Sample

8c5f105eb24d29e66e1b89a734f0aada_JaffaCakes118.exe

Resource

win7-20240708-en

isrstealer bootkit credential_access discovery persistence spyware stealer trojan upx

windows7-x64

10 signatures

150 seconds

Behavioral task

behavioral2

Sample

8c5f105eb24d29e66e1b89a734f0aada_JaffaCakes118.exe

Resource

win10v2004-20240802-en

isrstealer bootkit credential_access discovery persistence spyware stealer trojan upx

windows10-2004-x64

10 signatures

150 seconds

Malware Config

Targets

- Target
  
  8c5f105eb24d29e66e1b89a734f0aada_JaffaCakes118
- Size
  
  240KB
- MD5
  
  8c5f105eb24d29e66e1b89a734f0aada
- SHA1
  
  2d3fbdd86bd1e441f7050436e5eac56dade36541
- SHA256
  
  563dd975f0211df190d9c1ac1538c16ea3a82aba413f199b5b7000c08570a1e2
- SHA512
  
  b836ee8b2637d5122735618935caefa0d8359590357aa1ad90469f14028e9d1ce1edfa569aeb76bcf55895f253a7735f8891e9076570f79a45ae0bd4383e092b
- SSDEEP
  
  6144:wLa94GN7fiIEAeLHJx0ZW6x6FJzw4E5i3ZUp/yq0DASrikrhwKACS:wW94GN7fiIEAeLHJx0ZWJjjNJcyq8rzs
Score

10^/10

isrstealer bootkit credential_access discovery 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
- Credentials from Password Stores: Credentials from Web Browsers
  Malicious Access or copy of Web Browser Credential store.
  credential_access stealer
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- UPX packed file
  Detects executables packed with UPX/modified UPX open source packer.
  upx
- Writes to the Master Boot Record (MBR)
  Bootkits write to the MBR to gain persistence at a level below the operating system.
  bootkit persistence
- Suspicious use of SetThreadContext
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

Bootkit

Privilege Escalation

Defense Evasion

Pre-OS Boot

Bootkit

Credential Access

Credentials from Password Stores

Credentials from Web Browsers

Unsecured Credentials

Credentials In Files

Discovery

System Location Discovery

System Language Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

isrstealerbootkitcredential_accessdiscoverypersistencespywarestealertrojanupx

behavioral2

isrstealerbootkitcredential_accessdiscoverypersistencespywarestealertrojanupx

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