isrstealer | 559500c657588d8d013fe4276d135a3ff698c943c2b40b03c980f1816501ba5e

Analysis

max time kernel
150s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-09-2024 20:45

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General

Target

d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
Size

111KB
MD5

d06b8221c01ba5b2d6bf85e3d97571d3
SHA1

81d410406596bee4ea22d8b54e86383728326325
SHA256

559500c657588d8d013fe4276d135a3ff698c943c2b40b03c980f1816501ba5e
SHA512

cc96cadf8ab4c0ca418aa8c6924bbb5cbbbff363f91960d9583c3440353efefef9cfe58574138ab6791939b76fff65c97f7a6d9038ff36745a79dffbed4c88e4
SSDEEP

3072:ycMq6AUQILv/MffUb+rO2qBdgYeTfc5IATo4FMUIoHb:fMrQILsnnO2QGfCMU/Hb

Score

10^/10

isrstealer discovery 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

Processes:

resource	yara_rule
behavioral2/memory/4560-0-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/4560-2-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/4560-5-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/4560-6-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2996 set thread context of 4560	2996	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe	86

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exed06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe

pid	Process
4560	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
4560	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
4560	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
4560	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
4560	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
4560	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
4560	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
4560	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe

pid	Process
4560	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2996 wrote to memory of 4560	2996	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe	86
PID 2996 wrote to memory of 4560	2996	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe	86
PID 2996 wrote to memory of 4560	2996	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe	86
PID 2996 wrote to memory of 4560	2996	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe	86
PID 2996 wrote to memory of 4560	2996	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe	86
PID 2996 wrote to memory of 4560	2996	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe	86
PID 2996 wrote to memory of 4560	2996	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe	86
PID 2996 wrote to memory of 4560	2996	d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Local\Temp\d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d06b8221c01ba5b2d6bf85e3d97571d3_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/4560-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4560-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4560-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4560-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download