MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a1c90b2001fa92e59d6062b4c5b672f3d24f8fa4fc8f095bd964b303007b2ac3. 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: 14
| SHA256 hash: | a1c90b2001fa92e59d6062b4c5b672f3d24f8fa4fc8f095bd964b303007b2ac3 |
|---|---|
| SHA3-384 hash: | e593515ac67e4afc6e7e46d6d339bc4e8b6554b041824bfe7fc085340c394f3e85654c3e42e39ade3d71a08894e6f2fb |
| SHA1 hash: | cb71de5ee0fc7791d297c0f72f0c146dfd97c173 |
| MD5 hash: | a36e491779433d610ddc32eb3d460b9e |
| humanhash: | south-tango-nebraska-november |
| File name: | a1c90b2001fa92e59d6062b4c5b672f3d24f8fa4fc8f095bd964b303007b2ac3 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 604'584 bytes |
| First seen: | 2025-12-08 14:34:00 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 1f23f452093b5c1ff091a2f9fb4fa3e9 (303 x GuLoader, 47 x AgentTesla, 47 x RemcosRAT) |
| ssdeep | 12288:YPKlyUB6zomGIoHGldFjO/33YrStuwQ2qmWGJb:YisDjKO4P3YSE2qU |
| Threatray | 2'433 similar samples on MalwareBazaar |
| TLSH | T1F3D40261FB85C817D8501B7408B6DF796A78BD442AA98F0F73687A5E7F363826C0E350 |
| 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 | 69607a78b88cf0e8 (1 x GuLoader) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Udmarvningernes |
|---|---|
| Issuer: | Udmarvningernes |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-11-05T00:39:23Z |
| Valid to: | 2026-11-05T00:39:23Z |
| Serial number: | 78d8acdc7772003483a023da4c2b56a06717975a |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 0ad71ecd406229d12a9c28e486c7ded5e0e59b0e6b0d3bd48f0b379d25d7059f |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
106
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a1c90b2001fa92e59d6062b4c5b672f3d24f8fa4fc8f095bd964b303007b2ac3
Verdict:
Malicious activity
Analysis date:
2025-12-08 15:42:02 UTC
Tags:
snake keylogger evasion telegram stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Verdict:
Malicious
Score:
95.7%
Tags:
injection obfusc virus nsis
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-10T03:50:00Z UTC
Last seen:
2025-12-08T15:01:00Z UTC
Hits:
~1000
Malware family:
Unlabeled
Verdict:
Unknown
Score:
95%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2025-11-10 06:40:04 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
20 of 36 (55.56%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'423 additional samples on MalwareBazaar
Result
Malware family:
vipkeylogger
Score:
10/10
Tags:
family:vipkeylogger collection discovery keylogger spyware stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Browser Information Discovery
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
VIPKeylogger
Vipkeylogger family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
a1c90b2001fa92e59d6062b4c5b672f3d24f8fa4fc8f095bd964b303007b2ac3
MD5 hash:
a36e491779433d610ddc32eb3d460b9e
SHA1 hash:
cb71de5ee0fc7791d297c0f72f0c146dfd97c173
SH256 hash:
1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172
MD5 hash:
466179e1c8ee8a1ff5e4427dbb6c4a01
SHA1 hash:
eb607467009074278e4bd50c7eab400e95ae48f7
SH256 hash:
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
MD5 hash:
0d7ad4f45dc6f5aa87f606d0331c6901
SHA1 hash:
48df0911f0484cbe2a8cdd5362140b63c41ee457
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 |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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