isrstealer | 61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8

General

Target

61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
Size

108KB
MD5

bba2a3ef1db6a31bfa098b39276f0823
SHA1

1559bd74b80d78cc86d933b157e35d47c4e00abf
SHA256

61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8
SHA512

b53d01fc4b831e2050ea67af317a04bdd6afc78af08c3d0ba796ec8c120124b154ec52bc13452cc54aa0aa3b656db074d1c3af4aa4ae38a70dcb30185840d81a
SSDEEP

1536:O9rzltmquXDONz3HBexMQT+2umeWO2+FPx/lXYVAG8Zs7kfl/ig8OjK:OVzltmquXCmxMQeXYVQsel/iwjK

Score

10^/10

isrstealer 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
behavioral2/memory/3880-142-0x0000000000000000-mapping.dmp	family_isrstealer
behavioral2/memory/3880-143-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/3880-148-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/3880-149-0x0000000000400000-0x0000000000414000-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
T1081
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
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1480 set thread context of 3880	1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe	82

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3880	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
3880	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
3880	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
3880	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
3880	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
3880	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
3880	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
3880	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
3880	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1480 wrote to memory of 3880	1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe	82
PID 1480 wrote to memory of 3880	1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe	82
PID 1480 wrote to memory of 3880	1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe	82
PID 1480 wrote to memory of 3880	1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe	82
PID 1480 wrote to memory of 3880	1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe	82
PID 1480 wrote to memory of 3880	1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe	82
PID 1480 wrote to memory of 3880	1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe	82
PID 1480 wrote to memory of 3880	1480	61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe	82

C:\Users\Admin\AppData\Local\Temp\61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
"C:\Users\Admin\AppData\Local\Temp\61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Users\Admin\AppData\Local\Temp\61cbe473c2d0a7a24eb3be7041be0ad6a2112e769ef7172e86208e292c9b00f8.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:3880

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1480-138-0x0000000002360000-0x0000000002370000-memory.dmp

Filesize
64KB

Download
memory/1480-139-0x0000000002370000-0x0000000002380000-memory.dmp

Filesize
64KB

Download
memory/1480-134-0x0000000002170000-0x0000000002180000-memory.dmp

Filesize
64KB

Download
memory/1480-135-0x00000000021D0000-0x00000000021E0000-memory.dmp

Filesize
64KB

Download
memory/1480-136-0x0000000002230000-0x0000000002240000-memory.dmp

Filesize
64KB

Download
memory/1480-137-0x0000000002240000-0x0000000002250000-memory.dmp

Filesize
64KB

Download
memory/1480-133-0x0000000002160000-0x0000000002170000-memory.dmp

Filesize
64KB

Download
memory/1480-147-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1480-132-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1480-141-0x0000000002390000-0x00000000023A0000-memory.dmp

Filesize
64KB

Download
memory/1480-140-0x0000000002380000-0x0000000002390000-memory.dmp

Filesize
64KB

Download
memory/3880-143-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3880-148-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3880-149-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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