MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 1bbffa3f8bd9d8adeb17700d77f607e48fbf88375a8ea5c8f119c63933204fc7. 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: 7
| SHA256 hash: | 1bbffa3f8bd9d8adeb17700d77f607e48fbf88375a8ea5c8f119c63933204fc7 |
|---|---|
| SHA3-384 hash: | 04cd66ab6935db5b5cfe9af1c289020c5c82bf6af4df588a7575cdcbdb0068aff01aae7f4a6020defdf73cea46d45317 |
| SHA1 hash: | 3a1ca66c347c78ac1d5b6f7ec98c37ab4561392b |
| MD5 hash: | bc6228b589ff7c76685003933f0e9693 |
| humanhash: | fish-twenty-early-mirror |
| File name: | rpayment.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 419'904 bytes |
| First seen: | 2023-02-28 13:36:58 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 56a78d55f3f7af51443e58e0ce2fb5f6 (739 x GuLoader, 453 x Formbook, 295 x Loki) |
| ssdeep | 12288:HiopATnYCAwgxbxcIZNQuzUDukt0UGSzWG+:HioqnYCAw0iI1UOu4 |
| Threatray | 3'452 similar samples on MalwareBazaar |
| TLSH | T1E894237059D8C30BD1B91F316E3615271AB0A62532B2638B0B31EA9C7F72701DA5FB5E |
| 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 | b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla) |
| Reporter |  FXOLabs |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | |
|---|---|
| Issuer: | |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2022-11-24T00:53:42Z |
| Valid to: | 2025-11-23T00:53:42Z |
| Serial number: | 2475712e0e42789c61c1d01b7744ca93eecf807f |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | c298a39a898f94b850bb889b1d4982e2488478610b35a786d083a42d9d416267 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
227
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rpayment.exe
Verdict:
Malicious activity
Analysis date:
2023-02-28 13:39:53 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Clean
Maliciousness:
Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% subdirectories
Creating a file in the %AppData% subdirectories
Creating a file
Delayed reading of the file
Sending a custom TCP request
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
guloader overlay packed shell32.dll
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Verdict:
Unknown
Result
Threat name:
FormBook, GuLoader
Detection:
malicious
Classification:
troj.evad.rans.spyw
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Found potential ransomware demand text
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample has a suspicious name (potential lure to open the executable)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect Any.run
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2023-02-28 12:43:55 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
13 of 25 (52.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
unknown
Similar samples:
+ 3'442 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery
Behaviour
Enumerates physical storage devices
Checks installed software on the system
Loads dropped DLL
Unpacked files
SH256 hash:
a4ec98011ef99e595912718c1a1bf1aa67bfc2192575729d42f559d01f67b95c
MD5 hash:
d968cb2b98b83c03a9f02dd9b8df97dc
SHA1 hash:
d784c9b7a92dce58a5038beb62a48ff509e166a0
SH256 hash:
1bbffa3f8bd9d8adeb17700d77f607e48fbf88375a8ea5c8f119c63933204fc7
MD5 hash:
bc6228b589ff7c76685003933f0e9693
SHA1 hash:
3a1ca66c347c78ac1d5b6f7ec98c37ab4561392b
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.19
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: | cobalt_strike_tmp01925d3f |
|---|---|
| Author: | The DFIR Report |
| Description: | files - file ~tmp01925d3f.exe |
| Reference: | https://thedfirreport.com |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | PE_Potentially_Signed_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
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
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.