Malware Analysis Report

2024-10-19 10:27

Sample ID 240318-p26j5ahg9t
Target d38f179b057a7dd91cdca34db51a0c08
SHA256 9c2c62d4c59900ffbaa1d74d0f9694efcb20e82321646568c2fd7b2345fb3b3c
Tags
isrstealer spyware stealer trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

9c2c62d4c59900ffbaa1d74d0f9694efcb20e82321646568c2fd7b2345fb3b3c

Threat Level: Known bad

The file d38f179b057a7dd91cdca34db51a0c08 was found to be: Known bad.

Malicious Activity Summary

isrstealer spyware stealer trojan upx

ISR Stealer

ISR Stealer payload

UPX packed file

Reads user/profile data of web browsers

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-18 12:50

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-18 12:50

Reported

2024-03-18 12:53

Platform

win7-20231129-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Reads user/profile data of web browsers

spyware stealer

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2392 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe

Processes

C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe

"C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe"

C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe

"C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe"

C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\FWFv1FElSQ.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 stuffree.info udp

Files

memory/2616-0-0x0000000000400000-0x0000000000435000-memory.dmp

memory/2616-2-0x0000000000400000-0x0000000000435000-memory.dmp

memory/2616-4-0x0000000000400000-0x0000000000435000-memory.dmp

memory/2616-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2616-8-0x0000000000400000-0x0000000000435000-memory.dmp

memory/3032-13-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2616-14-0x0000000000400000-0x0000000000435000-memory.dmp

memory/3032-16-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3032-17-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3032-18-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3032-20-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\FWFv1FElSQ.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/2616-23-0x0000000000400000-0x0000000000435000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-18 12:50

Reported

2024-03-18 12:53

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Reads user/profile data of web browsers

spyware stealer

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2200 wrote to memory of 2120 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2200 wrote to memory of 2120 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2200 wrote to memory of 2120 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2200 wrote to memory of 2120 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2200 wrote to memory of 2120 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2200 wrote to memory of 2120 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2200 wrote to memory of 2120 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2200 wrote to memory of 2120 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2120 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2120 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2120 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2120 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2120 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2120 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2120 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
PID 2120 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe

Processes

C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe

"C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe"

C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe

"C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe"

C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\ipH0FH4OyX.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 202.178.17.96.in-addr.arpa udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 stuffree.info udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 196.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 211.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 211.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 50.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 181.178.17.96.in-addr.arpa udp
GB 96.17.178.181:80 tcp

Files

memory/2120-0-0x0000000000400000-0x0000000000435000-memory.dmp

memory/2120-2-0x0000000000400000-0x0000000000435000-memory.dmp

memory/3976-5-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3976-7-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3976-8-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3976-9-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3976-11-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\ipH0FH4OyX.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/2120-14-0x0000000000400000-0x0000000000435000-memory.dmp