isrstealer | 482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b

Analysis

max time kernel
112s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-10-2022 16:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe
Size

173KB
MD5

838c7f66c15a84419510d9642f46ab41
SHA1

094b7c7d3b45af32fa227adcc074cf250b85f4bd
SHA256

482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b
SHA512

d80620e812277adeba5f1075fad701e0f299bfcca79f787cb2e595e6964e9d44aafc291ed6c9fc2961d0136820a3b9f05176db86bcd30dc551057f4fdf93cc38
SSDEEP

3072:uVzKxDfE3Oh9EdLQAQnOLx5X7pl3MDVZdx8udG0206hojLldWafruJgHPQkout:dSuCLdQOdgZdWup206KvldvruSVoS

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

ISR Stealer payload 2 IoCs

resource	yara_rule
behavioral2/memory/312-143-0x0000000000400000-0x0000000000434000-memory.dmp	family_isrstealer
behavioral2/memory/312-144-0x0000000000400000-0x0000000000434000-memory.dmp	family_isrstealer

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/312-132-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral2/memory/4812-136-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4812-138-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4812-139-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4812-140-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4812-141-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/312-143-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral2/memory/312-144-0x0000000000400000-0x0000000000434000-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 312 set thread context of 4812	312	482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe	81

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
312	482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 312 wrote to memory of 4812	312	482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe	81
PID 312 wrote to memory of 4812	312	482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe	81
PID 312 wrote to memory of 4812	312	482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe	81
PID 312 wrote to memory of 4812	312	482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe	81
PID 312 wrote to memory of 4812	312	482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe	81
PID 312 wrote to memory of 4812	312	482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe	81
PID 312 wrote to memory of 4812	312	482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe	81
PID 312 wrote to memory of 4812	312	482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe	81

C:\Users\Admin\AppData\Local\Temp\482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe
"C:\Users\Admin\AppData\Local\Temp\482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:312
- C:\Users\Admin\AppData\Local\Temp\482324cd99084ad055a2f3d7b7f6126939482ecfdeb9f9f53c657148b7f4b23b.exe
  /scomma "C:\Users\Admin\AppData\Local\Temp\FeZoqOznJx.ini"
  2⤵
  PID:4812

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

Loading Replay Monitor...

Downloads

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

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/312-132-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/312-143-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/312-144-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4812-136-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4812-138-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4812-139-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4812-140-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4812-141-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download