isrstealer | ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e

Analysis

max time kernel
44s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-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 1 IoCs

resource	yara_rule
behavioral1/memory/2012-62-0x0000000000400000-0x0000000000439000-memory.dmp	family_isrstealer

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1068-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1068-60-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1068-61-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1068-64-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1068-65-0x0000000000400000-0x0000000000453000-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 2012 set thread context of 1068	2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	27

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 1068	2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	27
PID 2012 wrote to memory of 1068	2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	27
PID 2012 wrote to memory of 1068	2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	27
PID 2012 wrote to memory of 1068	2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	27
PID 2012 wrote to memory of 1068	2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	27
PID 2012 wrote to memory of 1068	2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	27
PID 2012 wrote to memory of 1068	2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	27
PID 2012 wrote to memory of 1068	2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	27
PID 2012 wrote to memory of 1068	2012	ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe	27

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:2012
- C:\Users\Admin\AppData\Local\Temp\ed096e0b518ef9b8ce600308639805760d29b3edced26c9db3a865e3c63fbc0e.exe
  /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
  2⤵
  PID:1068

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/1068-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1068-59-0x0000000074B51000-0x0000000074B53000-memory.dmp

Filesize
8KB

Download
memory/1068-60-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1068-61-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1068-64-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1068-65-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2012-62-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2012-63-0x0000000000310000-0x0000000000349000-memory.dmp

Filesize
228KB

Download
memory/2012-66-0x0000000000310000-0x0000000000349000-memory.dmp

Filesize
228KB

Download