MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 c4dd3995cfddd9493e923bafe40de83681e9399392a3eff3ce27bedf3b8d5783. 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: 11
| SHA256 hash: | c4dd3995cfddd9493e923bafe40de83681e9399392a3eff3ce27bedf3b8d5783 |
|---|---|
| SHA3-384 hash: | 9405a6410e680eeb48d1368aa3d6d2c2d3b300475b745aed04841df13e1a0d6d974f983564209899aef7bc481d6de1ef |
| SHA1 hash: | 6cb23e4bad7079c5675365a9ca81a51390a2928e |
| MD5 hash: | 8f4a73eafe2aa93dfc9d92465aa07dbc |
| humanhash: | earth-avocado-violet-vegan |
| File name: | Facturas Pagadas al VencimientoPDF.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 364'552 bytes |
| First seen: | 2023-07-04 07:35:32 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b78ecf47c0a3e24a6f4af114e2d1f5de (295 x GuLoader, 23 x Formbook, 21 x RemcosRAT) |
| ssdeep | 6144:myIVPZVheNA+ff0OMKAq8SZyiKKQNmZIDgNUTB8RI4pX:+nhe2ej/8q67mZIDgNQCB |
| TLSH | T1A0744A9239DA356FEC1F5A79035FEAB22A795CE07391486E4F40320D4C3664A80EDDDB |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 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) (4505/5/1) |
| File icon (PE): |  |
| dhash icon | c88604b919c6c6c0 (77 x GuLoader, 10 x Formbook, 8 x AgentTesla) |
| Reporter |  abuse_ch |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | |
|---|---|
| Issuer: | |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2022-09-18T10:47:42Z |
| Valid to: | 2025-09-17T10:47:42Z |
| Serial number: | 6d1397f6a285610a3fffc9ce6c54577d43ea9e05 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | e6a06f6c9b5ad27ecfb96b412ba8313f901c2b0798fd69f5f1becb05e8da2aee |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
280
Origin country :
NLVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Facturas Pagadas al VencimientoPDF.exe
Verdict:
Malicious activity
Analysis date:
2023-07-04 07:38:10 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Result
Verdict:
Clean
Maliciousness:
Behaviour
Searching for the window
Creating a window
Creating a file in the %AppData% subdirectories
Delayed reading of the file
Sending a custom TCP request
Creating a file in the %temp% subdirectories
Result
Malware family:
n/a
Score:
5/10
Tags:
n/a
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
buer control lolbin masquerade overlay packed shell32
Verdict:
Malicious
Labled as:
Trojan.Generic
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
72 / 100
Signature
Multi AV Scanner detection for submitted file
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected GuLoader
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Makoob
Status:
Malicious
First seen:
2023-07-03 08:50:52 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
13 of 37 (35.14%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery
Behaviour
Enumerates physical storage devices
Drops file in Windows directory
Checks installed software on the system
Loads dropped DLL
Unpacked files
SH256 hash:
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 hash:
3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 hash:
fe582246792774c2c9dd15639ffa0aca90d6fd0b
SH256 hash:
c4dd3995cfddd9493e923bafe40de83681e9399392a3eff3ce27bedf3b8d5783
MD5 hash:
8f4a73eafe2aa93dfc9d92465aa07dbc
SHA1 hash:
6cb23e4bad7079c5675365a9ca81a51390a2928e
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | Ins_NSIS_Buer_Nov_2020_1 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | Detect NSIS installer used for Buer loader |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | PE_Potentially_Signed_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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