MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 12a4c9166dd1b44d85ccbdb15d659488e70e72e4bb8fd3037685b9aaa705e8e2. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
GuLoader
Vendor detections: 16
| SHA256 hash: | 12a4c9166dd1b44d85ccbdb15d659488e70e72e4bb8fd3037685b9aaa705e8e2 |
|---|---|
| SHA3-384 hash: | 19539292e31deb70c67cd7a2eb865de30cdfaa3933eb4d4d28fab9ef190c7f81414c3f59081598218d66342b7a902c37 |
| SHA1 hash: | cdfe5dd382097bcb68f2bef4be0924ae10ffaa62 |
| MD5 hash: | 92552f0769ded6635c4cb028530de479 |
| humanhash: | connecticut-idaho-nine-fix |
| File name: | REQUESTING FOR QUOTATION.bat |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 415'308 bytes |
| First seen: | 2026-02-09 12:03:55 UTC |
| Last seen: | 2026-02-09 14:43:10 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b34f154ec913d2d2c435cbd644e91687 (592 x GuLoader, 130 x RemcosRAT, 84 x EpsilonStealer) |
| ssdeep | 6144:fQ606xV8H+lc7SGd7Uln1Vk8nLTOvlo75gHCjA2MZ4fyeqJW8EYVdq7dHdRO:UecGGRUlXk8LTOvlo75gijA2oEYVdudU |
| Threatray | 2'568 similar samples on MalwareBazaar |
| TLSH | T12A94F1113242EA47CEEC06B184AF92FE4E759E7B59828F43F680F75E7C712C67A15250 |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10522/11/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| dhash icon | 2a0cf8f8b8f8f8dc (6 x GuLoader, 2 x PhantomStealer) |
| Reporter |  threatcat_ch |
| Tags: | exe GuLoader |
Intelligence
File Origin
# of uploads :
2
# of downloads :
167
Origin country :
CHVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
GuLoader
a c2 URL, a useragent string, and a string XOR key
GuLoader
an XOR decryption key and an extracted component
NSIS
extracted archive contents
Malware family:
n/a
ID:
1
File name:
_12a4c9166dd1b44d85ccbdb15d659488e70e72e4bb8fd3037685b9aaa705e8e2.exe
Verdict:
Malicious activity
Analysis date:
2026-02-09 12:05:22 UTC
Tags:
stealer phantom crypto-regex auto-reg
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
70%
Tags:
injection shellcode obfusc
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
anti-debug blackhole guloader installer installer installer-heuristic masquerade microsoft_visual_cc nsis soft-404
Verdict:
Malicious
Labled as:
Trojan.Downloader
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-02-09T03:36:00Z UTC
Last seen:
2026-02-11T09:57:00Z UTC
Hits:
~1000
Detections:
Trojan.NSIS.Makoob.sba HEUR:Trojan.Win32.Makoob.gen HEUR:Trojan.Win32.GuLoader.gen Trojan.Win32.GuLoader.sb HEUR:Trojan.NSIS.GuLoader.gen Trojan-Downloader.Win32.Minix.sb Trojan.NSIS.Makoob.sbb
Verdict:
Unknown
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Connects to many ports of the same IP (likely port scanning)
Creates a thread in another existing process (thread injection)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Monitors registry run keys for changes
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Suspicious Executable File Creation
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Writes to foreign memory regions
Yara detected GuLoader
Behaviour
Behavior Graph:
Score:
66%
Verdict:
Susipicious
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Verdict:
Malicious
Threat:
Family.PHANTOM
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2026-02-09 06:31:20 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
17 of 24 (70.83%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'558 additional samples on MalwareBazaar
Result
Malware family:
phantom_stealer
Score:
10/10
Tags:
family:phantom_stealer collection discovery persistence spyware stealer
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
System Time Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Adds Run key to start application
Contacts third-party web service commonly abused for C2
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Detects PhantomStealer payload
PhantomStealer
Phantom_stealer family
Unpacked files
SH256 hash:
12a4c9166dd1b44d85ccbdb15d659488e70e72e4bb8fd3037685b9aaa705e8e2
MD5 hash:
92552f0769ded6635c4cb028530de479
SHA1 hash:
cdfe5dd382097bcb68f2bef4be0924ae10ffaa62
SH256 hash:
86c8ee210e6611383a634dcb8c60455063ddae3d7adccbeacf3adf7bf2a46676
MD5 hash:
d2e45dd852a659e11897df573832f381
SHA1 hash:
19990ee627c95b6c18d3b5c5f0ec5c24791d0af5
SH256 hash:
c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448
MD5 hash:
9625d5b1754bc4ff29281d415d27a0fd
SHA1 hash:
80e85afc5cccd4c0a3775edbb90595a1a59f5ce0
Malware family:
GuLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
YARA Signatures
MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.
| Rule name: | Detect_NSIS_Nullsoft_Installer |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects NSIS installers by .ndata section + NSIS header string |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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