Malware Analysis Report

2025-01-18 16:43

Sample ID 221001-2jfl7sbegn
Target ea4eb55ebf7e14785d300fbb24be2bdea633c4b78b69fe5fccf77a16cab5cccd
SHA256 ea4eb55ebf7e14785d300fbb24be2bdea633c4b78b69fe5fccf77a16cab5cccd
Tags
isrstealer collection persistence stealer trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

ea4eb55ebf7e14785d300fbb24be2bdea633c4b78b69fe5fccf77a16cab5cccd

Threat Level: Known bad

The file ea4eb55ebf7e14785d300fbb24be2bdea633c4b78b69fe5fccf77a16cab5cccd was found to be: Known bad.

Malicious Activity Summary

isrstealer collection persistence stealer trojan upx

ISR Stealer

ISR Stealer payload

NirSoft MailPassView

Nirsoft

Executes dropped EXE

UPX packed file

Drops startup file

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-10-01 22:36

Signatures

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2022-10-01 22:36

Reported

2022-10-02 00:41

Platform

win10v2004-20220812-en

Max time kernel

151s

Max time network

171s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Samples.jpg.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

NirSoft MailPassView

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

Nirsoft

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A 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
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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe N/A

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\reg.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XGdES9N8RW = "C:\\Users\\Admin\\AppData\\Roaming\\dGNIWZiH\\seb2plM.exe.lnk" C:\Windows\SysWOW64\reg.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1180 wrote to memory of 4284 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 1180 wrote to memory of 4284 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 1180 wrote to memory of 4284 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 4284 wrote to memory of 444 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 4284 wrote to memory of 444 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 4284 wrote to memory of 444 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1180 wrote to memory of 4256 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1180 wrote to memory of 4256 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1180 wrote to memory of 4256 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1180 wrote to memory of 4256 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1180 wrote to memory of 4256 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1180 wrote to memory of 4256 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1180 wrote to memory of 4256 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 4524 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 4524 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 4524 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 4524 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 4524 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 4524 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 4524 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 4524 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 924 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 924 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 924 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 924 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 924 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 924 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 924 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4256 wrote to memory of 924 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe

"C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"

C:\Windows\SysWOW64\reg.exe

reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\nmq16teM2Y.ini"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\T8CooeKiVj.ini"

Network

Country Destination Domain Proto
US 93.184.221.240:80 tcp
US 8.8.8.8:53 106.89.54.20.in-addr.arpa udp
FR 40.79.141.153:443 tcp
US 93.184.221.240:80 tcp
US 93.184.220.29:80 tcp
US 8.8.8.8:53 obi1.cwsurf.de udp

Files

memory/1180-132-0x0000000074E40000-0x00000000753F1000-memory.dmp

memory/1180-133-0x0000000074E40000-0x00000000753F1000-memory.dmp

memory/4284-134-0x0000000000000000-mapping.dmp

memory/444-135-0x0000000000000000-mapping.dmp

memory/4256-136-0x0000000000000000-mapping.dmp

memory/4256-137-0x0000000000400000-0x0000000000442000-memory.dmp

memory/1180-139-0x0000000074E40000-0x00000000753F1000-memory.dmp

memory/4256-141-0x0000000000400000-0x0000000000442000-memory.dmp

memory/4524-143-0x0000000000000000-mapping.dmp

memory/4524-144-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4524-146-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4524-147-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4524-148-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\nmq16teM2Y.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/924-150-0x0000000000000000-mapping.dmp

memory/924-151-0x0000000000400000-0x000000000041F000-memory.dmp

memory/924-153-0x0000000000400000-0x000000000041F000-memory.dmp

memory/924-154-0x0000000000400000-0x000000000041F000-memory.dmp

memory/924-155-0x0000000000400000-0x000000000041F000-memory.dmp

memory/4256-156-0x0000000000400000-0x0000000000442000-memory.dmp

memory/4256-157-0x0000000000400000-0x0000000000442000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-01 22:36

Reported

2022-10-02 00:42

Platform

win7-20220812-en

Max time kernel

77s

Max time network

47s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\reg.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\XGdES9N8RW = "C:\\Users\\Admin\\AppData\\Roaming\\dGNIWZiH\\seb2plM.exe.lnk" C:\Windows\SysWOW64\reg.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 288 set thread context of 928 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 288 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 288 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 288 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 288 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 1244 wrote to memory of 2020 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1244 wrote to memory of 2020 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1244 wrote to memory of 2020 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1244 wrote to memory of 2020 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 288 wrote to memory of 928 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 288 wrote to memory of 928 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 288 wrote to memory of 928 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 288 wrote to memory of 928 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 288 wrote to memory of 928 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 288 wrote to memory of 928 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 288 wrote to memory of 928 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 928 wrote to memory of 1172 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
PID 928 wrote to memory of 1172 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
PID 928 wrote to memory of 1172 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
PID 928 wrote to memory of 1172 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe

"C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"

C:\Windows\SysWOW64\reg.exe

reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe"

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe"

Network

N/A

Files

memory/288-54-0x0000000075771000-0x0000000075773000-memory.dmp

memory/288-55-0x00000000741C0000-0x000000007476B000-memory.dmp

memory/288-56-0x00000000741C0000-0x000000007476B000-memory.dmp

memory/288-57-0x0000000001F36000-0x0000000001F47000-memory.dmp

memory/288-58-0x0000000001F36000-0x0000000001F47000-memory.dmp

\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe

MD5 458a2379358ae7cdd5a47059277338ca
SHA1 c3753cfa681d226b772a3ab6bc462a5c29791fa0
SHA256 d954de23f8e04cff445b91436fdaf60b05c18e115c3dda8afce8460d72fb1fa7
SHA512 fe182750f864b963f5ca970013bf5003dd108c7e7d69c981d9b8779b8276727b464fd5a1978dffd68e9e52e809bf7ce23206114d58f6aba3d87d4e8b5d768705

memory/1244-60-0x0000000000000000-mapping.dmp

memory/2020-61-0x0000000000000000-mapping.dmp

memory/928-62-0x0000000000400000-0x0000000000419000-memory.dmp

memory/928-63-0x0000000000400000-0x0000000000419000-memory.dmp

memory/928-66-0x0000000000401000-mapping.dmp

memory/928-65-0x0000000000400000-0x0000000000419000-memory.dmp

memory/288-68-0x00000000741C0000-0x000000007476B000-memory.dmp

memory/1172-71-0x0000000000000000-mapping.dmp

memory/288-69-0x0000000001F36000-0x0000000001F47000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe

MD5 ed797d8dc2c92401985d162e42ffa450
SHA1 0f02fc517c7facc4baefde4fe9467fb6488ebabe
SHA256 b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e
SHA512 e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

memory/928-72-0x0000000000400000-0x0000000000419000-memory.dmp

\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe

MD5 ed797d8dc2c92401985d162e42ffa450
SHA1 0f02fc517c7facc4baefde4fe9467fb6488ebabe
SHA256 b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e
SHA512 e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-01 22:36

Reported

2022-10-02 00:40

Platform

win10v2004-20220812-en

Max time kernel

92s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\reg.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XGdES9N8RW = "C:\\Users\\Admin\\AppData\\Roaming\\dGNIWZiH\\seb2plM.exe.lnk" C:\Windows\SysWOW64\reg.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4956 set thread context of 4596 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4956 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 4956 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 4956 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 4340 wrote to memory of 4212 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 4340 wrote to memory of 4212 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 4340 wrote to memory of 4212 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 4956 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4956 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4956 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4956 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4956 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4956 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 4596 wrote to memory of 2908 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
PID 4596 wrote to memory of 2908 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
PID 4596 wrote to memory of 2908 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe

"C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"

C:\Windows\SysWOW64\reg.exe

reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe"

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe"

Network

Country Destination Domain Proto
NL 52.178.17.2:443 tcp
IE 52.109.77.2:443 tcp
IE 52.109.76.31:443 tcp

Files

memory/4956-132-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/4956-133-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/4340-134-0x0000000000000000-mapping.dmp

memory/4212-135-0x0000000000000000-mapping.dmp

memory/4596-136-0x0000000000000000-mapping.dmp

memory/4596-137-0x0000000000400000-0x0000000000419000-memory.dmp

memory/4956-139-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/4596-141-0x0000000000400000-0x0000000000419000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe

MD5 e118330b4629b12368d91b9df6488be0
SHA1 ce90218c7e3b90df2a3409ec253048bb6472c2fd
SHA256 3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9
SHA512 ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

memory/2908-138-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe

MD5 e118330b4629b12368d91b9df6488be0
SHA1 ce90218c7e3b90df2a3409ec253048bb6472c2fd
SHA256 3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9
SHA512 ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Analysis: behavioral3

Detonation Overview

Submitted

2022-10-01 22:36

Reported

2022-10-02 00:43

Platform

win7-20220812-en

Max time kernel

109s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer payload

Description Indicator Process Target
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NirSoft MailPassView

Description Indicator Process Target
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Nirsoft

Description Indicator Process Target
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UPX packed file

upx
Description Indicator Process Target
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Loads dropped DLL

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

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\reg.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\XGdES9N8RW = "C:\\Users\\Admin\\AppData\\Roaming\\dGNIWZiH\\seb2plM.exe.lnk" C:\Windows\SysWOW64\reg.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1888 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 1888 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 1888 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 1888 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\SysWOW64\cmd.exe
PID 1532 wrote to memory of 1336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1532 wrote to memory of 1336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1532 wrote to memory of 1336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1532 wrote to memory of 1336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1888 wrote to memory of 1144 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1888 wrote to memory of 1144 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1888 wrote to memory of 1144 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1888 wrote to memory of 1144 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1888 wrote to memory of 1144 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1888 wrote to memory of 1144 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1888 wrote to memory of 1144 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1888 wrote to memory of 1144 N/A C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1712 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1712 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1712 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1712 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1712 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1712 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1712 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1712 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1712 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1144 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe

"C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"

C:\Windows\SysWOW64\reg.exe

reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\toot2NJD2r.ini"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\A2UwSj3W40.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 obi1.cwsurf.de udp

Files

memory/1888-54-0x00000000764D1000-0x00000000764D3000-memory.dmp

memory/1888-55-0x0000000074590000-0x0000000074B3B000-memory.dmp

memory/1888-56-0x0000000000236000-0x0000000000247000-memory.dmp

memory/1888-57-0x0000000074590000-0x0000000074B3B000-memory.dmp

\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe

MD5 d4bb706e3e461f1ccf390fc2fc786faf
SHA1 94b8dee04b501862d4b66f376a806ccaaebb4122
SHA256 ac2cfb961139a24edca708958b6f6a72666f3f711696065435fcf169bee64a56
SHA512 384a5639ed3e9074600430183634ba7bd52b26190041241012970e164dc6f08e6b4eef5f8d4ba9ab4ff79ad01cd08ed93e7f7e0b62662a5cce80fb2b80dee3cb

memory/1532-59-0x0000000000000000-mapping.dmp

memory/1336-60-0x0000000000000000-mapping.dmp

memory/1144-61-0x0000000000400000-0x0000000000442000-memory.dmp

memory/1144-62-0x0000000000400000-0x0000000000442000-memory.dmp

memory/1144-64-0x0000000000400000-0x0000000000442000-memory.dmp

memory/1144-66-0x0000000000400000-0x0000000000442000-memory.dmp

memory/1144-67-0x0000000000401180-mapping.dmp

memory/1888-70-0x0000000074590000-0x0000000074B3B000-memory.dmp

memory/1888-71-0x0000000000236000-0x0000000000247000-memory.dmp

memory/1712-74-0x00000000004512E0-mapping.dmp

memory/1712-73-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1712-77-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1712-78-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1144-79-0x0000000000400000-0x0000000000442000-memory.dmp

memory/1712-80-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1712-81-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\toot2NJD2r.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/1144-84-0x0000000000400000-0x0000000000442000-memory.dmp

memory/1564-85-0x0000000000400000-0x000000000041F000-memory.dmp

memory/1564-86-0x000000000041C410-mapping.dmp

memory/1564-89-0x0000000000400000-0x000000000041F000-memory.dmp

memory/1564-90-0x0000000000400000-0x000000000041F000-memory.dmp

memory/1564-91-0x0000000000400000-0x000000000041F000-memory.dmp

memory/1564-92-0x0000000000400000-0x000000000041F000-memory.dmp

memory/1144-93-0x0000000000400000-0x0000000000442000-memory.dmp