Analysis
- max time kernel
73s - max time network
131s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system - submitted
13/11/2022, 23:54
Static task
static1
Behavioral task
behavioral1
Sample
fatura.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
fatura.exe
Resource
win10v2004-20220812-en
General
- Target fatura.exe
- Size 649KB
- Sample221113-3xt77agh4x
- SHA256 2b05c82d97fec0402f8a03acf466c13c09a69cebda207c35cedb40102bb8cad8
- MD5 7a5ddd4ce3d1a026e2ef0f93e91fb778
- SHA1 891f2d3ac09082b5c1a441e04c94a83498817e1f
- SHA512 e8558d231b957a1948d69310ccf879cd0ffa85b161bac396b21495d914bbf03951662bb2fcff0c2afe8b1ffa744792f775dfcf011434dd47927cda2147cc26a7
- SSDEEP 12288:vSoiM/U057k2q+1YG28GHd6Pp7SxDGguk7t7NDnu6:bRqQ728md6x7SsgtJ7xnu6
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
snakekeylogger
-
https://api.telegram.org/bot5402813712:AAG__8vfwqo_1K9XHIpxzTR9T7UW4raysO4/sendMessage?chat_id=5034680713
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 6 IoCs
resource yara_rule behavioral1/memory/688-69-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/688-67-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/688-71-0x00000000004200FE-mapping.dmp family_snakekeylogger behavioral1/memory/688-70-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/688-75-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/688-73-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger - Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions fatura.exe - Looks for VMWare Tools registry key 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools fatura.exe - Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion fatura.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion fatura.exe - Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fatura.exe Key opened \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fatura.exe Key opened \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fatura.exe - Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 4 checkip.dyndns.org - Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum fatura.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 fatura.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 768 set thread context of 688 768 fatura.exe 32 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 568 schtasks.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 688 fatura.exe 1652 powershell.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 688 fatura.exe Token: SeDebugPrivilege 1652 powershell.exe - Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 768 wrote to memory of 1652 768 fatura.exe 28 PID 768 wrote to memory of 1652 768 fatura.exe 28 PID 768 wrote to memory of 1652 768 fatura.exe 28 PID 768 wrote to memory of 1652 768 fatura.exe 28 PID 768 wrote to memory of 568 768 fatura.exe 30 PID 768 wrote to memory of 568 768 fatura.exe 30 PID 768 wrote to memory of 568 768 fatura.exe 30 PID 768 wrote to memory of 568 768 fatura.exe 30 PID 768 wrote to memory of 688 768 fatura.exe 32 PID 768 wrote to memory of 688 768 fatura.exe 32 PID 768 wrote to memory of 688 768 fatura.exe 32 PID 768 wrote to memory of 688 768 fatura.exe 32 PID 768 wrote to memory of 688 768 fatura.exe 32 PID 768 wrote to memory of 688 768 fatura.exe 32 PID 768 wrote to memory of 688 768 fatura.exe 32 PID 768 wrote to memory of 688 768 fatura.exe 32 PID 768 wrote to memory of 688 768 fatura.exe 32 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fatura.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fatura.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\fatura.exe"C:\Users\Admin\AppData\Local\Temp\fatura.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:768 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\muUfIVIw.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1652
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\muUfIVIw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCC84.tmp"2⤵
- Creates scheduled task(s)
PID:568
-
-
C:\Users\Admin\AppData\Local\Temp\fatura.exe"C:\Users\Admin\AppData\Local\Temp\fatura.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:688
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\tmpCC84.tmp
- Size 1KB
- SHA256 55ef87ac34b8f52746da805f754d618b95c1b3c3950bb377db3d95255b3c0a53
- MD5 e38ac86b3d38af95a6870f8c05415533
- SHA1 0c28b756d5c02d3258fb1b6427a60a8223c10546
- SHA512 11cda147547ff0f7fdac97d21931df40a9ead66398f8048adaa3f8e3d8fa7b63fa8979a76b655582e6dc5508bc6411eb8a654914af679540fcfccca928d06411
- MD5 SHA1 SHA512