Analysis
- max time kernel
142s - max time network
147s - platform
windows7_x64 - resource
win7-20240319-en - resource tags
arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system - submitted
01/04/2024, 11:20
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
Hitomi Downloader.exe
Resource
win7-20240319-en
18 signatures
150 seconds
Behavioral task
behavioral2
Sample
Hitomi Downloader.exe
Resource
win10v2004-20240319-en
18 signatures
150 seconds
General
- Target Hitomi Downloader.exe
- Size 9.7MB
- Sample240401-nfenvada2t
- SHA256 2b5bf75c0aede1169e7aa2b4c760b1852f34990d5b8ce27ca2fa21efa35e0635
- MD5 e959a251d4fd9d7c2bb495120b34e0c7
- SHA1 f1fd8ceb0c33d51d36e7b48fe2672ee1873a8d5c
- SHA512 bb87ec1a60d28a8949ba0bbb4f2cf8c839f1648420ad24016d2aec87d400193071936e9f2239d8df609c4c08cd144c204466e3da71615d90988498718aef0eb0
- SSDEEP 3072:g2YHCLwn3UjOikH+LGP34o7KerVUzeeDXbwa21Dv9ua/aHyvDTd2iWtxILgcaL1K:g2YHuwn3UFdbwvsvj3xh
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
pid Process 2580 Update.exe - Loads dropped DLL 1 IoCs
pid Process 2524 Hitomi Downloader.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-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Hitomi Downloader.exe Key opened \REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Hitomi Downloader.exe Key opened \REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Hitomi Downloader.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 2 checkip.dyndns.org - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2524 Hitomi Downloader.exe 2524 Hitomi Downloader.exe 2580 Update.exe 2580 Update.exe - Suspicious behavior: RenamesItself 1 IoCs
pid Process 2524 Hitomi Downloader.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2524 Hitomi Downloader.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2524 Hitomi Downloader.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2524 wrote to memory of 2580 2524 Hitomi Downloader.exe 30 PID 2524 wrote to memory of 2580 2524 Hitomi Downloader.exe 30 PID 2524 wrote to memory of 2580 2524 Hitomi Downloader.exe 30 PID 2524 wrote to memory of 2580 2524 Hitomi Downloader.exe 30 PID 2524 wrote to memory of 2580 2524 Hitomi Downloader.exe 30 PID 2524 wrote to memory of 2580 2524 Hitomi Downloader.exe 30 PID 2524 wrote to memory of 2580 2524 Hitomi Downloader.exe 30 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Hitomi Downloader.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Hitomi Downloader.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Hitomi Downloader.exe"C:\Users\Admin\AppData\Local\Temp\Hitomi Downloader.exe"1⤵
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2524 -
C:\Users\Admin\AppData\Local\Temp\Update.exe"C:\Users\Admin\AppData\Local\Temp\Update.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2580
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path \Users\Admin\AppData\Local\Temp\Update.exe
- Size 6.4MB
- SHA256 9b08bf9b0ee4f62f21592107a5fc5e4cc9080aa4b0f1e049cf45ba0ee2296eb7
- MD5 9ebd44ed56bec49d85d5c106f0c2e99f
- SHA1 f0cd6a68c537a592a02da7fe493ba9624fb42338
- SHA512 9e9adb6bca703ec7061bc0774455986800d8dffc0dd69ffd893fc8298df7d359af9f6ff8ff6002b3b498c1858c0ebffde70fdefc7134aa6664cf5c3ce85bb012
- SSDEEP 196608:Pm8wlf8UhGn96UrW1zZeP1qt5r6dhroH0UVP+R:O8IfdhGn9BU2YEdhrwxP+
- MD5 SHA1 SHA512 SSDEEP