isrstealer | 4fb5b0e71bcc81aba81d9f146da8bf94a2ce19c742a16cfd7570c423b56abbbe

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27-06-2024 15:54

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General

Target

169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
Size

784KB
MD5

169a02aca18a5f1bd5ab80218b894058
SHA1

12283dfb978b283c80008d099084f0276bbc8185
SHA256

4fb5b0e71bcc81aba81d9f146da8bf94a2ce19c742a16cfd7570c423b56abbbe
SHA512

412a0158b5b2e0fb03e69bbe457703fa50403b56d03392a7d16f0f6f3bf163e1325e67bf095c51ddcf2348d069b30b44940b8cb321a36269362cc151a6d1b69f
SSDEEP

12288:W6kFwFcxhV4hG6rrxGiWFP98apHuOf+MfL2rqNInYBt3S9/AyejK5IhAn:7kF8cxD4o6rxGiWRHtu2C+YylVjHhAn

Score

10^/10

isrstealer bootkit persistence spyware stealer trojan

Malware Config

Signatures

ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
trojan stealer isrstealer

ISR Stealer payload 4 IoCs

resource	yara_rule
behavioral1/memory/2572-27-0x0000000000400000-0x0000000000451000-memory.dmp	family_isrstealer
behavioral1/memory/2572-25-0x0000000000400000-0x0000000000451000-memory.dmp	family_isrstealer
behavioral1/memory/2572-21-0x0000000000400000-0x0000000000451000-memory.dmp	family_isrstealer
behavioral1/memory/2572-65-0x0000000000400000-0x0000000000451000-memory.dmp	family_isrstealer

NirSoft WebBrowserPassView 4 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2700-62-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/2700-61-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/2700-56-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/2700-67-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView

Nirsoft 4 IoCs

resource	yara_rule
behavioral1/memory/2700-62-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/2700-61-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/2700-56-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/2700-67-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1976 set thread context of 764	1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	28
PID 764 set thread context of 2572	764	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	29
PID 2572 set thread context of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2180 set thread context of 2700	2180	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
764	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 764	1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	28
PID 1976 wrote to memory of 764	1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	28
PID 1976 wrote to memory of 764	1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	28
PID 1976 wrote to memory of 764	1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	28
PID 1976 wrote to memory of 764	1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	28
PID 1976 wrote to memory of 764	1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	28
PID 1976 wrote to memory of 764	1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	28
PID 1976 wrote to memory of 764	1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	28
PID 1976 wrote to memory of 764	1976	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	28
PID 764 wrote to memory of 2572	764	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	29
PID 764 wrote to memory of 2572	764	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	29
PID 764 wrote to memory of 2572	764	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	29
PID 764 wrote to memory of 2572	764	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	29
PID 764 wrote to memory of 2572	764	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	29
PID 764 wrote to memory of 2572	764	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	29
PID 764 wrote to memory of 2572	764	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	29
PID 764 wrote to memory of 2572	764	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	29
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2572 wrote to memory of 2180	2572	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	30
PID 2180 wrote to memory of 2700	2180	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2700	2180	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2700	2180	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2700	2180	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2700	2180	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2700	2180	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe"
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:764
- - C:\Users\Admin\AppData\Local\Temp\169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2572
  - - C:\Users\Admin\AppData\Local\Temp\169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:2180
    - - C:\Users\Admin\AppData\Local\Temp\169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
        
        "C:\Users\Admin\AppData\Local\Temp\169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
        5⤵
        
        PID:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/764-6-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/764-12-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/764-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/764-4-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/764-2-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/764-14-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/764-30-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2180-37-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2180-59-0x0000000000401000-0x0000000000409000-memory.dmp

Filesize
32KB

Download
memory/2180-49-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2180-45-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2180-43-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2180-41-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2180-39-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2180-51-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2180-57-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2180-35-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2180-33-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2180-50-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2572-27-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2572-25-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2572-21-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2572-19-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2572-17-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2572-65-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2700-61-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2700-56-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2700-52-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2700-62-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2700-67-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download