isrstealer | e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89

Analysis

max time kernel
127s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
submitted
06-03-2022 14:10

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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
behavioral2/memory/2964-132-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2964-134-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2964-135-0x0000000000400000-0x0000000000453000-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 3980 set thread context of 2964	3980	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	52

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3980	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3980 wrote to memory of 2964	3980	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	52
PID 3980 wrote to memory of 2964	3980	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	52
PID 3980 wrote to memory of 2964	3980	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	52
PID 3980 wrote to memory of 2964	3980	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	52
PID 3980 wrote to memory of 2964	3980	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	52
PID 3980 wrote to memory of 2964	3980	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	52
PID 3980 wrote to memory of 2964	3980	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	52
PID 3980 wrote to memory of 2964	3980	e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe	52

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:3980
- C:\Users\Admin\AppData\Local\Temp\e838df8490aba78ef72a2313963814589cee3eefb9b862428d05314ae8cfae89.exe
  /scomma "C:\Users\Admin\AppData\Local\Temp\sR6WkcSx4s.ini"
  2⤵
  PID:2964

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2964-132-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2964-134-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2964-135-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download