Analysis
- max time kernel
142s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
24/05/2024, 01:04
Static task
static1
Behavioral task
behavioral1
Sample
Invoice.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Invoice.exe
Resource
win10v2004-20240226-en
General
- Target Invoice.exe
- Size 557KB
- Sample240524-bfacxafe8t
- 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/2376-22-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger - Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
resource yara_rule behavioral2/memory/2376-22-0x0000000000400000-0x0000000000426000-memory.dmp INDICATOR_SUSPICIOUS_Binary_References_Browsers - Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
resource yara_rule behavioral2/memory/2376-22-0x0000000000400000-0x0000000000426000-memory.dmp INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients - Detects executables with potential process hoocking 1 IoCs
resource yara_rule behavioral2/memory/2376-22-0x0000000000400000-0x0000000000426000-memory.dmp INDICATOR_SUSPICIOUS_EXE_DotNetProcHook - 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 1020 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-1-5-21-3808065738-1666277613-1125846146-1000\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-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Invoice.exe Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Invoice.exe Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\16.0\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 52 checkip.dyndns.org - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4484 set thread context of 2376 4484 Invoice.exe 107 - 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 4960 schtasks.exe - Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1020 powershell.exe 1020 powershell.exe 2376 Invoice.exe 2376 Invoice.exe 1020 powershell.exe 2376 Invoice.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1020 powershell.exe Token: SeDebugPrivilege 2376 Invoice.exe - Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4484 wrote to memory of 1020 4484 Invoice.exe 103 PID 4484 wrote to memory of 1020 4484 Invoice.exe 103 PID 4484 wrote to memory of 1020 4484 Invoice.exe 103 PID 4484 wrote to memory of 4960 4484 Invoice.exe 105 PID 4484 wrote to memory of 4960 4484 Invoice.exe 105 PID 4484 wrote to memory of 4960 4484 Invoice.exe 105 PID 4484 wrote to memory of 2376 4484 Invoice.exe 107 PID 4484 wrote to memory of 2376 4484 Invoice.exe 107 PID 4484 wrote to memory of 2376 4484 Invoice.exe 107 PID 4484 wrote to memory of 2376 4484 Invoice.exe 107 PID 4484 wrote to memory of 2376 4484 Invoice.exe 107 PID 4484 wrote to memory of 2376 4484 Invoice.exe 107 PID 4484 wrote to memory of 2376 4484 Invoice.exe 107 PID 4484 wrote to memory of 2376 4484 Invoice.exe 107 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Invoice.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\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:4484 -
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:1020
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xHctVCfBs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDE93.tmp"2⤵
- Creates scheduled task(s)
PID:4960
-
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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:2376
-
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3592 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:81⤵PID:1812
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5f3wt4qr.kon.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\tmpDE93.tmp
- Size 1KB
- SHA256 3d9b1e56c808b4ce95892a0040e38c996d56ef609d2655772bfdff61a855c018
- MD5 88fc53bb0c44fa956149772f23e8eb11
- SHA1 66cc2e767c920447973ceec02436ee548408873f
- SHA512 820df14ec40739c49431fea6b8ab5fb3eae79f7ee21101580894b3154d2627b0732f055cf9448b0bfe8a16a6cecab3f8f0b25d0dc73f504cd71fbc11c69c75e6
- MD5 SHA1 SHA512