isrstealer | 706b138c55d21ea056f38803a78091803c9d66e25d3a61e7c98612bca55ad929

General

Target

833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe
Size

71KB
MD5

833c3ca181549d31374e60629f8aa233
SHA1

607329a5788be132d872b0507645a149e19c5469
SHA256

706b138c55d21ea056f38803a78091803c9d66e25d3a61e7c98612bca55ad929
SHA512

2f950d1cd61fcf5f0a47eb6d96cbf13e3a183dd8546e1781ff08d6e394bc4646ee22d6255e97ebeb5ed89682b6eddda37f186602cbfe28a21fa9505d99f89d84
SSDEEP

1536:cPiMIluN43I8eGKV4RF+R9ZaspCnKS29ch8FUPaBUogZ/5:cPTIP48eGKV5R9ZAnYS9PyC/5

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

resource	yara_rule
behavioral1/memory/2536-1-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/2536-6-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/2536-7-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/2536-9-0x0000000000400000-0x0000000000414000-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

description	pid	Process	procid_target
PID 2372 set thread context of 2536	2372	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe	30

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2536	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe
2536	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe
2536	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe
2536	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2536	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 2536	2372	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe	30
PID 2372 wrote to memory of 2536	2372	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe	30
PID 2372 wrote to memory of 2536	2372	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe	30
PID 2372 wrote to memory of 2536	2372	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe	30
PID 2372 wrote to memory of 2536	2372	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe	30
PID 2372 wrote to memory of 2536	2372	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe	30
PID 2372 wrote to memory of 2536	2372	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe	30
PID 2372 wrote to memory of 2536	2372	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe	30
PID 2372 wrote to memory of 2536	2372	833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Users\Admin\AppData\Local\Temp\833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\833c3ca181549d31374e60629f8aa233_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2372-0-0x0000000000020000-0x0000000000021000-memory.dmp

Filesize
4KB

Download
memory/2536-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2536-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2536-7-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2536-9-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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