MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 aa1105659d2cba649744a8fab29478af596927dd6bd8da12db3d8a5bf2d3a15a. 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: | aa1105659d2cba649744a8fab29478af596927dd6bd8da12db3d8a5bf2d3a15a |
|---|---|
| SHA3-384 hash: | 74d2145131631150fa058d096ef818c4f566f8ac328241a1c5e1b8aa7b8e5d3aa9a0fd28ef1232f6afc133f28743f8d0 |
| SHA1 hash: | 686cd7b7b7b4ac0d3724fb5f3179976778f258cc |
| MD5 hash: | 52ee9a8245eff62190f6b54a4aa7e35b |
| humanhash: | purple-kentucky-pluto-victor |
| File name: | scan.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 466'000 bytes |
| First seen: | 2026-05-20 16:49:20 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b34f154ec913d2d2c435cbd644e91687 (592 x GuLoader, 130 x RemcosRAT, 84 x EpsilonStealer) |
| ssdeep | 6144:J5lz/Zgm8JjEt/X9DXICgdmc0pjLRKHMdBcljglISNQkcXiV5q0kYDpKSWo43OVb:zFo8/XxICqrkLRKHmmmBNIYlKSWxp2 |
| Threatray | 2'381 similar samples on MalwareBazaar |
| TLSH | T18AA4F152EA8191C2DC38A970CC5784791667DD3898E40F4B3B5CB33E68B72425C2E7BE |
| TrID | 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 10.5% (.EXE) Win64 Executable (generic) (6522/11/2) 8.1% (.EXE) Win16 NE executable (generic) (5038/12/1) 7.2% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| dhash icon | 71f0f0b2f0f0f031 (2 x GuLoader, 1 x RemcosRAT) |
| Reporter |  TomU |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Funktionernes |
|---|---|
| Issuer: | Funktionernes |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-02-17T07:08:59Z |
| Valid to: | 2027-02-17T07:08:59Z |
| Serial number: | 67418e24ba9c765e6affbf316defb46b4a72abdc |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | aa3b0922dbf864ec6e992408272455bcde95ebd652c7f76cb5926db9bf989ce1 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
74
Origin country :
CHVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-05-20 18:38:54 UTC
Tags:
n/a
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 virus blic
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Delayed reading of the file
Creating a file
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug base64 guloader installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-03-12T21:13:00Z UTC
Last seen:
2026-05-22T10:53:00Z UTC
Hits:
~10000
Verdict:
Unknown
Score:
98%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Backdoor.Remcos
Status:
Suspicious
First seen:
2026-03-13 01:01:07 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
23 of 36 (63.89%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'371 additional samples on MalwareBazaar
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Family: Guloader,Cloudeye
Unpacked files
SH256 hash:
aa1105659d2cba649744a8fab29478af596927dd6bd8da12db3d8a5bf2d3a15a
MD5 hash:
52ee9a8245eff62190f6b54a4aa7e35b
SHA1 hash:
686cd7b7b7b4ac0d3724fb5f3179976778f258cc
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 |
| Rule name: | VECT_Ransomware |
|---|---|
| Author: | Mustafa Bakhit |
| Description: | Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments. |
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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