isrstealer | 7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750

General

Target

7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe
Size

260KB
MD5

859122ce27f47ee69366098f762846b0
SHA1

2cb2ad59721b4c3661cae46e40a2a546fe240ea9
SHA256

7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750
SHA512

bce3cbd2a014811864cbb0a5909c1ae86fcb38bc4bb1573f1bcc9ae71ba837045e4ed0c76b3985acb5b78119c4beac1780bcd41c8152ff37f482d6de7506f2da
SSDEEP

6144:iYb//1PxwtdIKCC0ef//uXltKc+LVsz9b8R4jvLXou:2tdFeCXuLKcCVsz6SDLXo

Score

10^/10

isrstealer collection spyware stealer trojan upx

Malware Config

Signatures

ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
trojan stealer isrstealer

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3608-145-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral2/memory/3608-146-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 2 IoCs

resource	yara_rule
behavioral2/memory/3608-145-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral2/memory/3608-146-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4884-135-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4884-137-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4884-138-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4884-139-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3608-142-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/3608-144-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/3608-145-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/3608-146-0x0000000000400000-0x000000000041F000-memory.dmp	upx

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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2420 set thread context of 4884	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	78
PID 2420 set thread context of 3608	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	83

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 4884	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	78
PID 2420 wrote to memory of 4884	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	78
PID 2420 wrote to memory of 4884	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	78
PID 2420 wrote to memory of 4884	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	78
PID 2420 wrote to memory of 4884	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	78
PID 2420 wrote to memory of 4884	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	78
PID 2420 wrote to memory of 4884	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	78
PID 2420 wrote to memory of 4884	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	78
PID 2420 wrote to memory of 3608	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	83
PID 2420 wrote to memory of 3608	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	83
PID 2420 wrote to memory of 3608	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	83
PID 2420 wrote to memory of 3608	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	83
PID 2420 wrote to memory of 3608	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	83
PID 2420 wrote to memory of 3608	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	83
PID 2420 wrote to memory of 3608	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	83
PID 2420 wrote to memory of 3608	2420	7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe	83

C:\Users\Admin\AppData\Local\Temp\7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe
"C:\Users\Admin\AppData\Local\Temp\7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Users\Admin\AppData\Local\Temp\7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe
  /scomma "C:\Users\Admin\AppData\Local\Temp\QeyMrM1zsm.ini"
  2⤵
  PID:4884
- C:\Users\Admin\AppData\Local\Temp\7ed0f5a018177a25db136408abedc5577fa218e72ad30ac8a6af5bc3ccc83750.exe
  /scomma "C:\Users\Admin\AppData\Local\Temp\IKdNO3dCoQ.ini"
  2⤵
  - Accesses Microsoft Outlook accounts
  PID:3608

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\QeyMrM1zsm.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/3608-142-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3608-144-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3608-145-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3608-146-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4884-135-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4884-137-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4884-138-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4884-139-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing