isrstealer | e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89

General

Target

e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe
Size

208KB
MD5

ae68849e8d645f925050f760cb66ee7e
SHA1

e73fd89936887ff11ca2052b8fc5a149ee93b337
SHA256

e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89
SHA512

985d5a2df5f890ddff71fb8fc810d700f32c049a46cce7d8110776294e9b52a743107281d7f4ec9335a949b67ebdf0b2c56d479a5c6560e0823522f46df08295

Score

10^/10

isrstealer 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

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1172-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1172-59-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1172-60-0x0000000000400000-0x0000000000453000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 972 set thread context of 1172	972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	27

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 972 wrote to memory of 1172	972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	27
PID 972 wrote to memory of 1172	972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	27
PID 972 wrote to memory of 1172	972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	27
PID 972 wrote to memory of 1172	972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	27
PID 972 wrote to memory of 1172	972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	27
PID 972 wrote to memory of 1172	972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	27
PID 972 wrote to memory of 1172	972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	27
PID 972 wrote to memory of 1172	972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	27
PID 972 wrote to memory of 1172	972	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	27

C:\Users\Admin\AppData\Local\Temp\e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe
"C:\Users\Admin\AppData\Local\Temp\e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:972
- C:\Users\Admin\AppData\Local\Temp\e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe
  /scomma "C:\Users\Admin\AppData\Local\Temp\m3OLG7pHsF.ini"
  2⤵
  PID:1172

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

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1172-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1172-58-0x0000000074BE1000-0x0000000074BE3000-memory.dmp

Filesize
8KB

Download
memory/1172-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1172-60-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing