isrstealer | 4fb5b0e71bcc81aba81d9f146da8bf94a2ce19c742a16cfd7570c423b56abbbe

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 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3972-7-0x0000000000400000-0x0000000000451000-memory.dmp	family_isrstealer
behavioral2/memory/3972-10-0x0000000000400000-0x0000000000451000-memory.dmp	family_isrstealer
behavioral2/memory/3972-28-0x0000000000400000-0x0000000000451000-memory.dmp	family_isrstealer

NirSoft WebBrowserPassView 4 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/4484-17-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral2/memory/4484-23-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral2/memory/4484-24-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral2/memory/4484-26-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView

Nirsoft 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4484-17-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral2/memory/4484-23-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral2/memory/4484-24-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral2/memory/4484-26-0x0000000000400000-0x0000000000454000-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

Processes:

169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

description ioc process

File opened for modification \??\PhysicalDrive0 169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

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

Suspicious use of SetThreadContext 4 IoCs

Processes:

169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

description	pid	process	target process
PID 3832 set thread context of 2592	3832	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 2592 set thread context of 3972	2592	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 set thread context of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 1848 set thread context of 4484	1848	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

pid	process
3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

pid	process
3832	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
2592	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

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:3832
- 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:2592
- - 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:3972
  - - 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:1848
    - - 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:4484

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3936 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:2080

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1848-18-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1848-14-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1848-16-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1848-15-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1848-13-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2592-21-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2592-4-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2592-2-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3972-10-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3972-7-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3972-28-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4484-17-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4484-23-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4484-24-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4484-26-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download

description	pid	process	target process
PID 3832 wrote to memory of 2592	3832	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3832 wrote to memory of 2592	3832	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3832 wrote to memory of 2592	3832	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3832 wrote to memory of 2592	3832	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3832 wrote to memory of 2592	3832	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3832 wrote to memory of 2592	3832	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3832 wrote to memory of 2592	3832	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3832 wrote to memory of 2592	3832	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 2592 wrote to memory of 3972	2592	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 2592 wrote to memory of 3972	2592	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 2592 wrote to memory of 3972	2592	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 2592 wrote to memory of 3972	2592	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 2592 wrote to memory of 3972	2592	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 2592 wrote to memory of 3972	2592	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 2592 wrote to memory of 3972	2592	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 2592 wrote to memory of 3972	2592	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 3972 wrote to memory of 1848	3972	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 1848 wrote to memory of 4484	1848	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 1848 wrote to memory of 4484	1848	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 1848 wrote to memory of 4484	1848	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 1848 wrote to memory of 4484	1848	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe
PID 1848 wrote to memory of 4484	1848	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe	169a02aca18a5f1bd5ab80218b894058_JaffaCakes118.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads