isrstealer | 45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193

General

Target

JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe
Size

400KB
MD5

723a1496ac20595d955bbc575f61ff38
SHA1

d59a78036ee7395f352ae2e40ed59d739d481704
SHA256

45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193
SHA512

d931c295ae0d4d9c564becb977b3ac8f2fd84275db99a32f79450d8b766c9c1f5fff7f50fe4293540a30a8f6c31d71eff5a8c9d311f7c56b1ce03dc2af454c34
SSDEEP

6144:aoffjUCgjgXbZxx/XHTNmF1WWC04Wzva6X:aAIibZX4004UXX

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 3 IoCs

resource	yara_rule
behavioral1/memory/3032-10-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/3032-6-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/3032-15-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Isrstealer 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 3 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

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 524 set thread context of 3032	524	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe	31

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	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3032	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe
3032	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe
3032	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe
3032	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
524	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe
3032	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 524 wrote to memory of 3032	524	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe	31
PID 524 wrote to memory of 3032	524	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe	31
PID 524 wrote to memory of 3032	524	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe	31
PID 524 wrote to memory of 3032	524	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe	31
PID 524 wrote to memory of 3032	524	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe	31
PID 524 wrote to memory of 3032	524	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe	31
PID 524 wrote to memory of 3032	524	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe	31
PID 524 wrote to memory of 3032	524	JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:524
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_723a1496ac20595d955bbc575f61ff38.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:3032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

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/3032-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3032-4-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3032-10-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3032-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3032-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3032-15-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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