Analysis
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max time kernel
109s -
max time network
138s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
01-10-2022 22:36
Static task
static1
Behavioral task
behavioral1
Sample
Catelog.jpg.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
Catelog.jpg.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral3
Sample
Samples.jpg.exe
Resource
win7-20220812-en
Behavioral task
behavioral4
Sample
Samples.jpg.exe
Resource
win10v2004-20220812-en
General
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Target
Samples.jpg.exe
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Size
392KB
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MD5
d4bb706e3e461f1ccf390fc2fc786faf
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SHA1
94b8dee04b501862d4b66f376a806ccaaebb4122
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SHA256
ac2cfb961139a24edca708958b6f6a72666f3f711696065435fcf169bee64a56
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SHA512
384a5639ed3e9074600430183634ba7bd52b26190041241012970e164dc6f08e6b4eef5f8d4ba9ab4ff79ad01cd08ed93e7f7e0b62662a5cce80fb2b80dee3cb
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SSDEEP
12288:xZNq9Q5uxGnhiqti9tb/eT3BK/AMKEOL+:xua2GnUqtYyT8/xOL+
Malware Config
Signatures
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ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
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ISR Stealer payload 6 IoCs
resource yara_rule behavioral3/memory/1144-64-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral3/memory/1144-66-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral3/memory/1144-67-0x0000000000401180-mapping.dmp family_isrstealer behavioral3/memory/1144-79-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral3/memory/1144-84-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral3/memory/1144-93-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer -
NirSoft MailPassView 3 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral3/memory/1564-90-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral3/memory/1564-91-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral3/memory/1564-92-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView -
Nirsoft 3 IoCs
resource yara_rule behavioral3/memory/1564-90-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral3/memory/1564-91-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral3/memory/1564-92-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft -
resource yara_rule behavioral3/memory/1712-73-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral3/memory/1712-77-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral3/memory/1712-78-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral3/memory/1712-80-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral3/memory/1712-81-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral3/memory/1564-85-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral3/memory/1564-89-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral3/memory/1564-90-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral3/memory/1564-91-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral3/memory/1564-92-0x0000000000400000-0x000000000041F000-memory.dmp upx -
Loads dropped DLL 1 IoCs
pid Process 1888 Samples.jpg.exe -
Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts cvtres.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe 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" reg.exe -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1888 set thread context of 1144 1888 Samples.jpg.exe 30 PID 1144 set thread context of 1712 1144 cvtres.exe 31 PID 1144 set thread context of 1564 1144 cvtres.exe 34 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1888 Samples.jpg.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1888 Samples.jpg.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1144 cvtres.exe -
Suspicious use of WriteProcessMemory 34 IoCs
description pid Process procid_target PID 1888 wrote to memory of 1532 1888 Samples.jpg.exe 27 PID 1888 wrote to memory of 1532 1888 Samples.jpg.exe 27 PID 1888 wrote to memory of 1532 1888 Samples.jpg.exe 27 PID 1888 wrote to memory of 1532 1888 Samples.jpg.exe 27 PID 1532 wrote to memory of 1336 1532 cmd.exe 29 PID 1532 wrote to memory of 1336 1532 cmd.exe 29 PID 1532 wrote to memory of 1336 1532 cmd.exe 29 PID 1532 wrote to memory of 1336 1532 cmd.exe 29 PID 1888 wrote to memory of 1144 1888 Samples.jpg.exe 30 PID 1888 wrote to memory of 1144 1888 Samples.jpg.exe 30 PID 1888 wrote to memory of 1144 1888 Samples.jpg.exe 30 PID 1888 wrote to memory of 1144 1888 Samples.jpg.exe 30 PID 1888 wrote to memory of 1144 1888 Samples.jpg.exe 30 PID 1888 wrote to memory of 1144 1888 Samples.jpg.exe 30 PID 1888 wrote to memory of 1144 1888 Samples.jpg.exe 30 PID 1888 wrote to memory of 1144 1888 Samples.jpg.exe 30 PID 1144 wrote to memory of 1712 1144 cvtres.exe 31 PID 1144 wrote to memory of 1712 1144 cvtres.exe 31 PID 1144 wrote to memory of 1712 1144 cvtres.exe 31 PID 1144 wrote to memory of 1712 1144 cvtres.exe 31 PID 1144 wrote to memory of 1712 1144 cvtres.exe 31 PID 1144 wrote to memory of 1712 1144 cvtres.exe 31 PID 1144 wrote to memory of 1712 1144 cvtres.exe 31 PID 1144 wrote to memory of 1712 1144 cvtres.exe 31 PID 1144 wrote to memory of 1712 1144 cvtres.exe 31 PID 1144 wrote to memory of 1564 1144 cvtres.exe 34 PID 1144 wrote to memory of 1564 1144 cvtres.exe 34 PID 1144 wrote to memory of 1564 1144 cvtres.exe 34 PID 1144 wrote to memory of 1564 1144 cvtres.exe 34 PID 1144 wrote to memory of 1564 1144 cvtres.exe 34 PID 1144 wrote to memory of 1564 1144 cvtres.exe 34 PID 1144 wrote to memory of 1564 1144 cvtres.exe 34 PID 1144 wrote to memory of 1564 1144 cvtres.exe 34 PID 1144 wrote to memory of 1564 1144 cvtres.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe"C:\Users\Admin\AppData\Local\Temp\Samples.jpg.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1888 -
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"2⤵
- Suspicious use of WriteProcessMemory
PID:1532 -
C:\Windows\SysWOW64\reg.exereg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"3⤵
- Adds Run key to start application
PID:1336
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1144 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe/scomma "C:\Users\Admin\AppData\Local\Temp\toot2NJD2r.ini"3⤵PID:1712
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe/scomma "C:\Users\Admin\AppData\Local\Temp\A2UwSj3W40.ini"3⤵
- Accesses Microsoft Outlook accounts
PID:1564
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
5B
MD5d1ea279fb5559c020a1b4137dc4de237
SHA1db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3
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Filesize
392KB
MD5d4bb706e3e461f1ccf390fc2fc786faf
SHA194b8dee04b501862d4b66f376a806ccaaebb4122
SHA256ac2cfb961139a24edca708958b6f6a72666f3f711696065435fcf169bee64a56
SHA512384a5639ed3e9074600430183634ba7bd52b26190041241012970e164dc6f08e6b4eef5f8d4ba9ab4ff79ad01cd08ed93e7f7e0b62662a5cce80fb2b80dee3cb