MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 57955215d434a2d644bb5d59ca0e4068d49b3903f756e4d0a505b090b3cf494a. 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: 12
| SHA256 hash: | 57955215d434a2d644bb5d59ca0e4068d49b3903f756e4d0a505b090b3cf494a |
|---|---|
| SHA3-384 hash: | df70783bfad059555c246bb2267ebf313a96757d7b32c833fabaa90d510b26b6179f495306ba81e44999401d56a99e4d |
| SHA1 hash: | 1270608c6ba21dcd0c83e50652c788945e17dbda |
| MD5 hash: | 795cb3d81416d3c25c2ead5e68e4520f |
| humanhash: | bakerloo-blossom-timing-zulu |
| File name: | RFQ GEC-2804.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 1'146'864 bytes |
| First seen: | 2023-12-04 09:11:36 UTC |
| Last seen: | 2023-12-04 10:33:04 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 66fcdd6338ffed276966867e7cf86116 (9 x GuLoader, 2 x AgentTesla, 2 x RemcosRAT) |
| ssdeep | 24576:AN+eS037HG+SBZB72CARo+KswCmw7bZoCUnvqpxH8iiBzpRCuxXD7Ld6W:UDS9v12C21KTExoNnvaqiqjFD7oW |
| Threatray | 89 similar samples on MalwareBazaar |
| TLSH | T1B935338183FEC5CBE9A38A3C41A766792FE5A3D6E949CB035B33890D6CB97101C571B4 |
| 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 | 10f0c4c8c8c4f010 (26 x AgentTesla, 18 x Smoke Loader, 10 x Formbook) |
| Reporter |  abuse_ch |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | |
|---|---|
| Issuer: | |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2022-11-14T10:04:37Z |
| Valid to: | 2025-11-13T10:04:37Z |
| Serial number: | 5eafb8618666b43261e846d60cfba5d6203dd869 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | d8015816d5d4fedba8a7efe1cea877848024c9829871f84ab6bee62f85dd2d8c |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
297
Origin country :
NLVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Request for Quotation- P000313.pdf.zip
Verdict:
Malicious activity
Analysis date:
2023-10-23 08:48:59 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% subdirectories
Delayed reading of the file
Gathering data
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
control installer lolbin overlay packed shell32
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
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, FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
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 submitted file
Queues an APC in another process (thread injection)
Sample is not signed and drops a device driver
Uses nslookup.exe to query domains
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Score:
98%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.Generic
Status:
Malicious
First seen:
2023-10-23 07:34:09 UTC
File Type:
PE (Exe)
Extracted files:
354
AV detection:
16 of 37 (43.24%)
Threat level:
2/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 79 additional samples on MalwareBazaar
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader downloader
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
2d14e82ace016d0f0ee4fe29df6503955f6a77f3e705424427c1555411539a0e
MD5 hash:
61429bf00b8e34bd54c813bd2f5d09b9
SHA1 hash:
6b04e40ea730fe7e19f9b93ce2a76108f91910aa
SH256 hash:
57955215d434a2d644bb5d59ca0e4068d49b3903f756e4d0a505b090b3cf494a
MD5 hash:
795cb3d81416d3c25c2ead5e68e4520f
SHA1 hash:
1270608c6ba21dcd0c83e50652c788945e17dbda
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.95
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: | 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.
Malspam
Delivery method
Distributed via e-mail attachment
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