Malware Analysis Report

2025-01-18 16:44

Sample ID 221020-y7brdadde7
Target 3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59
SHA256 3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59
Tags
isrstealer spyware stealer trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59

Threat Level: Known bad

The file 3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59 was found to be: Known bad.

Malicious Activity Summary

isrstealer spyware stealer trojan upx

ISR Stealer

ISR Stealer payload

Executes dropped EXE

UPX packed file

Checks computer location settings

Reads user/profile data of web browsers

Loads dropped DLL

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-10-20 20:25

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-20 20:25

Reported

2022-10-20 23:26

Platform

win10v2004-20220812-en

Max time kernel

111s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.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

Executes dropped EXE

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

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe N/A

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 208 set thread context of 1756 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1936 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1936 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1936 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 208 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 208 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 208 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 208 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 208 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 208 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 208 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 208 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe

"C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe"

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

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

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

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

Network

Country Destination Domain Proto
AU 104.46.162.226:443 tcp
US 67.24.171.254:80 tcp
US 67.24.171.254:80 tcp
US 67.24.171.254:80 tcp
US 67.24.171.254:80 tcp

Files

memory/1936-132-0x00000000749B0000-0x0000000074F61000-memory.dmp

memory/208-133-0x0000000000000000-mapping.dmp

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

MD5 fa70ff27070d0dc03d010db7fbeb847e
SHA1 5a77048a0eef073a1377422b91d6c4350f892135
SHA256 6e5f0bc3c597ea0545e5c2add09e1e8c3ba86ab1990a239a3a823b1a667251d3
SHA512 55555061724f6f5a01a9f41dad14b57148a868fcb55e3377176631ecb5d9c95a3133e3ddf63689ea721d3870d76fc2e69e971f7bc31657cc6000658d41adb140

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

MD5 fa70ff27070d0dc03d010db7fbeb847e
SHA1 5a77048a0eef073a1377422b91d6c4350f892135
SHA256 6e5f0bc3c597ea0545e5c2add09e1e8c3ba86ab1990a239a3a823b1a667251d3
SHA512 55555061724f6f5a01a9f41dad14b57148a868fcb55e3377176631ecb5d9c95a3133e3ddf63689ea721d3870d76fc2e69e971f7bc31657cc6000658d41adb140

memory/1756-138-0x0000000000000000-mapping.dmp

memory/1756-139-0x0000000000400000-0x0000000000453000-memory.dmp

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

MD5 fa70ff27070d0dc03d010db7fbeb847e
SHA1 5a77048a0eef073a1377422b91d6c4350f892135
SHA256 6e5f0bc3c597ea0545e5c2add09e1e8c3ba86ab1990a239a3a823b1a667251d3
SHA512 55555061724f6f5a01a9f41dad14b57148a868fcb55e3377176631ecb5d9c95a3133e3ddf63689ea721d3870d76fc2e69e971f7bc31657cc6000658d41adb140

memory/1756-142-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1756-143-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1756-144-0x0000000000400000-0x0000000000453000-memory.dmp

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

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/1936-146-0x00000000749B0000-0x0000000074F61000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-20 20:25

Reported

2022-10-20 23:25

Platform

win7-20220812-en

Max time kernel

41s

Max time network

47s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.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
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

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

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

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1732 set thread context of 1240 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1960 wrote to memory of 1732 N/A C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1960 wrote to memory of 1732 N/A C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1960 wrote to memory of 1732 N/A C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1960 wrote to memory of 1732 N/A C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1732 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1732 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1732 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1732 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1732 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1732 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1732 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1732 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe
PID 1732 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\sd.exe C:\Users\Admin\AppData\Local\Temp\sd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe

"C:\Users\Admin\AppData\Local\Temp\3e0fe0b4ebcb8a1f803b47bed8129987630c7ed559cd21e288a2b2c4ee5d5c59.exe"

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

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

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

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

Network

N/A

Files

memory/1960-54-0x0000000074AB1000-0x0000000074AB3000-memory.dmp

memory/1960-55-0x0000000073E20000-0x00000000743CB000-memory.dmp

\Users\Admin\AppData\Local\Temp\sd.exe

MD5 fa70ff27070d0dc03d010db7fbeb847e
SHA1 5a77048a0eef073a1377422b91d6c4350f892135
SHA256 6e5f0bc3c597ea0545e5c2add09e1e8c3ba86ab1990a239a3a823b1a667251d3
SHA512 55555061724f6f5a01a9f41dad14b57148a868fcb55e3377176631ecb5d9c95a3133e3ddf63689ea721d3870d76fc2e69e971f7bc31657cc6000658d41adb140

\Users\Admin\AppData\Local\Temp\sd.exe

MD5 fa70ff27070d0dc03d010db7fbeb847e
SHA1 5a77048a0eef073a1377422b91d6c4350f892135
SHA256 6e5f0bc3c597ea0545e5c2add09e1e8c3ba86ab1990a239a3a823b1a667251d3
SHA512 55555061724f6f5a01a9f41dad14b57148a868fcb55e3377176631ecb5d9c95a3133e3ddf63689ea721d3870d76fc2e69e971f7bc31657cc6000658d41adb140

memory/1732-58-0x0000000000000000-mapping.dmp

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

MD5 fa70ff27070d0dc03d010db7fbeb847e
SHA1 5a77048a0eef073a1377422b91d6c4350f892135
SHA256 6e5f0bc3c597ea0545e5c2add09e1e8c3ba86ab1990a239a3a823b1a667251d3
SHA512 55555061724f6f5a01a9f41dad14b57148a868fcb55e3377176631ecb5d9c95a3133e3ddf63689ea721d3870d76fc2e69e971f7bc31657cc6000658d41adb140

\Users\Admin\AppData\Local\Temp\sd.exe

MD5 fa70ff27070d0dc03d010db7fbeb847e
SHA1 5a77048a0eef073a1377422b91d6c4350f892135
SHA256 6e5f0bc3c597ea0545e5c2add09e1e8c3ba86ab1990a239a3a823b1a667251d3
SHA512 55555061724f6f5a01a9f41dad14b57148a868fcb55e3377176631ecb5d9c95a3133e3ddf63689ea721d3870d76fc2e69e971f7bc31657cc6000658d41adb140

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

MD5 fa70ff27070d0dc03d010db7fbeb847e
SHA1 5a77048a0eef073a1377422b91d6c4350f892135
SHA256 6e5f0bc3c597ea0545e5c2add09e1e8c3ba86ab1990a239a3a823b1a667251d3
SHA512 55555061724f6f5a01a9f41dad14b57148a868fcb55e3377176631ecb5d9c95a3133e3ddf63689ea721d3870d76fc2e69e971f7bc31657cc6000658d41adb140

memory/1240-64-0x0000000000400000-0x0000000000453000-memory.dmp

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

MD5 fa70ff27070d0dc03d010db7fbeb847e
SHA1 5a77048a0eef073a1377422b91d6c4350f892135
SHA256 6e5f0bc3c597ea0545e5c2add09e1e8c3ba86ab1990a239a3a823b1a667251d3
SHA512 55555061724f6f5a01a9f41dad14b57148a868fcb55e3377176631ecb5d9c95a3133e3ddf63689ea721d3870d76fc2e69e971f7bc31657cc6000658d41adb140

memory/1240-65-0x00000000004512E0-mapping.dmp

memory/1240-69-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1240-70-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1240-71-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1240-72-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1960-73-0x0000000073E20000-0x00000000743CB000-memory.dmp