MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b670bbc3105f254af5b6f960172fc1abb97473fd4451d37b84bee8e3844f3340. 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: 13
| SHA256 hash: | b670bbc3105f254af5b6f960172fc1abb97473fd4451d37b84bee8e3844f3340 |
|---|---|
| SHA3-384 hash: | c71b8ef0a0961abba62744d26e023461a025c3614ec2973642ccd558237103a6167e4e3600b854263698b2bab29f09c4 |
| SHA1 hash: | f7db951c7d3c2bde58ccc751e4e5d3c814a7d9fb |
| MD5 hash: | 8189c58262e85904220322ae732c5f15 |
| humanhash: | north-mexico-zebra-michigan |
| File name: | RFQ541634_A_URGENT_QUOTATION_SHENLE.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 358'328 bytes |
| First seen: | 2024-11-18 07:27:50 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b34f154ec913d2d2c435cbd644e91687 (527 x GuLoader, 110 x RemcosRAT, 80 x EpsilonStealer) |
| ssdeep | 6144:C6bAcJFP9Q9eKvQsX99gdC9EL+YtxXMe0+E2FhKAWMSDV6dYTdnN/R:ppiQKRsic+YtiSE2FoAWMA6dYXp |
| Threatray | 34 similar samples on MalwareBazaar |
| TLSH | T1BB74F047B61C53AFF7AA8AB2793A13314A58EF9311457946FBC4FE2D163128CAD131C2 |
| 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 |
| File icon (PE): |  |
| dhash icon | e2ee8a8eb6d8ecf4 (56 x AgentTesla, 39 x RemcosRAT, 38 x GuLoader) |
| Reporter |  lowmal3 |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Delfin |
|---|---|
| Issuer: | Delfin |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2024-01-22T01:51:32Z |
| Valid to: | 2027-01-21T01:51:32Z |
| Serial number: | 3e79a3685a02bc3bd98cbb97cb328fb534878480 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 3fc4643158bd553bd37eb0a52d8ef8c004875403be55e97d952727e37ca5dc07 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
387
Origin country :
DEVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RFQ541634_A_URGENT_QUOTATION_SHENLE.gz
Verdict:
Malicious activity
Analysis date:
2024-05-15 05:27:07 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Verdict:
Malicious
Score:
95.7%
Tags:
uloader virus gates nsis
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Creating a file
Creating a file in the %temp% directory
Delayed reading of the file
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
fingerprint guloader installer microsoft_visual_cc overlay packed phishing
Verdict:
Malicious
Labled as:
Trojan.Generic
Malware family:
Unlabeled
Verdict:
Unknown
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample has a suspicious name (potential lure to open the executable)
Switches to a custom stack to bypass stack traces
Yara detected GuLoader
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2024-05-14 22:08:13 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
13 of 23 (56.52%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 24 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery persistence
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448
MD5 hash:
9625d5b1754bc4ff29281d415d27a0fd
SHA1 hash:
80e85afc5cccd4c0a3775edbb90595a1a59f5ce0
SH256 hash:
b670bbc3105f254af5b6f960172fc1abb97473fd4451d37b84bee8e3844f3340
MD5 hash:
8189c58262e85904220322ae732c5f15
SHA1 hash:
f7db951c7d3c2bde58ccc751e4e5d3c814a7d9fb
Malware family:
GuLoader
Verdict:
Malicious
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: | 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
BLint
The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.
Findings
| ID | Title | Severity |
|---|---|---|
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (HIGH_ENTROPY_VA) | high |
Reviews
| ID | Capabilities | Evidence |
|---|---|---|
| COM_BASE_API | Can Download & Execute components | ole32.dll::CoCreateInstance |
| SECURITY_BASE_API | Uses Security Base API | ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::SetFileSecurityW |
| SHELL_API | Manipulates System Shell | SHELL32.dll::ShellExecuteExW SHELL32.dll::SHFileOperationW SHELL32.dll::SHGetFileInfoW |
| WIN32_PROCESS_API | Can Create Process and Threads | KERNEL32.dll::CreateProcessW ADVAPI32.dll::OpenProcessToken KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetDiskFreeSpaceW KERNEL32.dll::GetCommandLineW |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::MoveFileExW KERNEL32.dll::MoveFileW |
| WIN_BASE_USER_API | Retrieves Account Information | ADVAPI32.dll::LookupPrivilegeValueW |
| WIN_REG_API | Can Manipulate Windows Registry | ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExW |
| WIN_USER_API | Performs GUI Actions | USER32.dll::AppendMenuW USER32.dll::EmptyClipboard USER32.dll::FindWindowExW USER32.dll::OpenClipboard USER32.dll::PeekMessageW USER32.dll::CreateWindowExW |
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