isrstealer | ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e

Analysis

max time kernel
62s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2022 00:46

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General

Target

ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe
Size

237KB
MD5

a73d713c66daf3c883c1c324a3fd366c
SHA1

09df2d614f6e84130b37bafeae2e9f055069c21b
SHA256

ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e
SHA512

2d14c1378c8c0a424dc4e3e1c887550c37fa68aea61cfed59f44778b3c3dcb4531f6b63913549ea63d62e315ab34ee7f4b350fdd0e7f9199e6f9036656e24be7
SSDEEP

6144:wTqPRRdIKCC0ef//uXltKc+LVsz9b8BK:7dFeCXuLKcCVsz6B

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/1960-139-0x0000000000400000-0x0000000000439000-memory.dmp	family_isrstealer
behavioral2/memory/1960-143-0x0000000000400000-0x0000000000439000-memory.dmp	family_isrstealer

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1156-135-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1156-137-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1156-138-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1156-140-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1156-141-0x0000000000400000-0x0000000000453000-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 1960 set thread context of 1156	1960	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	81

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1960	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 1156	1960	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	81
PID 1960 wrote to memory of 1156	1960	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	81
PID 1960 wrote to memory of 1156	1960	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	81
PID 1960 wrote to memory of 1156	1960	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	81
PID 1960 wrote to memory of 1156	1960	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	81
PID 1960 wrote to memory of 1156	1960	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	81
PID 1960 wrote to memory of 1156	1960	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	81
PID 1960 wrote to memory of 1156	1960	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	81

C:\Users\Admin\AppData\Local\Temp\ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe
"C:\Users\Admin\AppData\Local\Temp\ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Temp\ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe
  /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
  2⤵
  PID:1156

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

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

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/1156-135-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1156-137-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1156-138-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1156-140-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1156-141-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1960-139-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1960-143-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download