Analysis
- max time kernel
134s - max time network
117s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system - submitted
23/05/2024, 12:15
Static task
static1
Behavioral task
behavioral1
Sample
Invoice.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Invoice.exe
Resource
win10v2004-20240426-en
General
- Target Invoice.exe
- Size 557KB
- Sample240523-pexzgagg88
- SHA256 3235c0cc1e4c983e8e11ad3f9fe6af66cf5cda2d4f4730f84cd290d877136b6c
- MD5 7ccea594742ef8616d4329ae4b13d65f
- SHA1 2cc66eb1781ca1389e5b961f6904ba819770cf62
- SHA512 59eef8e1cbedf34393b262f3d84e61a67e552db3ce8d95c492d5559449694d2d6324882c84b844d496b2ae9a7a81dd42df81b6a0a4ff74a8c02e964a680d4a3d
- SSDEEP 12288:dVTlZnKl3tPs75yJfVtHNrx8ACBUtjKxisU9zJDs1K4YJHg6gi/:nZZKlCYJdBN98AC65izUrow9H+i
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.speedhouseoman.com
-
Port
587
-
Username
-
Password
SpH@0084
Extracted
-
snakekeylogger
-
Protocol
smtp
-
Host
mail.speedhouseoman.com
-
Port
587
-
Username
-
Password
SpH@0084
-
https://scratchdreams.tk
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 1 IoCs
resource yara_rule behavioral2/memory/3232-31-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger - Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 1688 powershell.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation Invoice.exe - 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-1-5-21-4018855536-2201274732-320770143-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Invoice.exe Key opened \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Invoice.exe Key opened \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Invoice.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 32 checkip.dyndns.org - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3264 set thread context of 3232 3264 Invoice.exe 101 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 3424 schtasks.exe - Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1688 powershell.exe 1688 powershell.exe 3232 Invoice.exe 3232 Invoice.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1688 powershell.exe Token: SeDebugPrivilege 3232 Invoice.exe - Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 3264 wrote to memory of 1688 3264 Invoice.exe 97 PID 3264 wrote to memory of 1688 3264 Invoice.exe 97 PID 3264 wrote to memory of 1688 3264 Invoice.exe 97 PID 3264 wrote to memory of 3424 3264 Invoice.exe 99 PID 3264 wrote to memory of 3424 3264 Invoice.exe 99 PID 3264 wrote to memory of 3424 3264 Invoice.exe 99 PID 3264 wrote to memory of 3232 3264 Invoice.exe 101 PID 3264 wrote to memory of 3232 3264 Invoice.exe 101 PID 3264 wrote to memory of 3232 3264 Invoice.exe 101 PID 3264 wrote to memory of 3232 3264 Invoice.exe 101 PID 3264 wrote to memory of 3232 3264 Invoice.exe 101 PID 3264 wrote to memory of 3232 3264 Invoice.exe 101 PID 3264 wrote to memory of 3232 3264 Invoice.exe 101 PID 3264 wrote to memory of 3232 3264 Invoice.exe 101 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Invoice.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Invoice.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Invoice.exe"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3264 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xHctVCfBs.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1688
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xHctVCfBs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp608F.tmp"2⤵
- Creates scheduled task(s)
PID:3424
-
-
C:\Users\Admin\AppData\Local\Temp\Invoice.exe"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3232
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Invoice.exe.log
- Size 1KB
- SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
- MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
- SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
- SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4rdw24oh.hx4.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\tmp608F.tmp
- Size 1KB
- SHA256 f533a0ba0a65c4c8b1dfbc699604919c05d1b4e4f2fe5498a23cc22c8836755a
- MD5 f653bbdef8000231cf1ce911d1b85dff
- SHA1 7e1e08636084411b33024ff8e78225952e32533f
- SHA512 9738aa9d931cb77048b0bc98f48f6651f1cd9c35aec20329ac401e736ac3793982784576921cec5bb6a4794621edcb6ffa0116ece024eb6ef28db3aa1bdb7eaf
- MD5 SHA1 SHA512