MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 5a23c2b6db6ec6993f56e635a2958ed21bbf94c6920f2329fdcd9a8641ff9b6a. 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: | 5a23c2b6db6ec6993f56e635a2958ed21bbf94c6920f2329fdcd9a8641ff9b6a |
|---|---|
| SHA3-384 hash: | 02e8a8f83b0a00e15003cb608ef91d6ef12842b9c926d85fe0b821da3f6a24cf37f7de13130961a8ec694e6ef8254284 |
| SHA1 hash: | f2aea3002a1529f56ea66478789037440702dfbd |
| MD5 hash: | 35826e4e9e0db5ce7a5e95d34c34e2da |
| humanhash: | uniform-speaker-idaho-india |
| File name: | 5112024976.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 1'224'768 bytes |
| First seen: | 2024-11-05 19:01:39 UTC |
| Last seen: | 2026-05-21 13:40:53 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b78ecf47c0a3e24a6f4af114e2d1f5de (310 x GuLoader, 23 x Formbook, 21 x RemcosRAT) |
| ssdeep | 24576:pCAoDyk/vnt3h1CzLuTIvVFALOOOPgMAO7w6/tJeuHdB4bU4VD4dmo:pCAfqvtx1UuTId0/YgMNf2uHHSU4VDU |
| TLSH | T19645124377660EA5D85D80F7D666CD316F63BC6B008106EB3648BB1A9FBA3E0412B53D |
| 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 | f0cce632d8e0e2f0 (5 x GuLoader) |
| Reporter |  threatcat_ch |
| Tags: | exe FormBook GuLoader signed |
Code Signing Certificate
| Organisation: | Thematically |
|---|---|
| Issuer: | Thematically |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2024-09-20T07:17:11Z |
| Valid to: | 2027-09-20T07:17:11Z |
| Serial number: | 72ff3823130dea295e2fabf3fd0b92ec3c0bf6ac |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 5b3f3e752b6c7e17b3684aa981e05d5f2505146c254f30ff48d48e70e3b7d7b3 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
510
Origin country :
CHVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
5112024976.exe
Verdict:
Suspicious activity
Analysis date:
2024-11-05 19:03:42 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:
91.7%
Tags:
shellcode exploit blic
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
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
installer microsoft_visual_cc overlay packed
Verdict:
Suspicious
Result
Threat name:
FormBook, GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
76 / 100
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Score:
97%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2024-11-05 16:17:10 UTC
File Type:
PE (Exe)
Extracted files:
10
AV detection:
14 of 37 (37.84%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Loads dropped DLL
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 hash:
3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 hash:
fe582246792774c2c9dd15639ffa0aca90d6fd0b
SH256 hash:
5a23c2b6db6ec6993f56e635a2958ed21bbf94c6920f2329fdcd9a8641ff9b6a
MD5 hash:
35826e4e9e0db5ce7a5e95d34c34e2da
SHA1 hash:
f2aea3002a1529f56ea66478789037440702dfbd
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: | Detect_SliverFox_String |
|---|---|
| Author: | huoji |
| Description: | Detect files is `SliverFox` malware |
| 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 |
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 |
|---|---|---|
| AUTH_API | Manipulates User Authorization | ADVAPI32.dll::SetFileSecurityA |
| COM_BASE_API | Can Download & Execute components | ole32.dll::CoCreateInstance |
| SECURITY_BASE_API | Uses Security Base API | ADVAPI32.dll::AdjustTokenPrivileges |
| SHELL_API | Manipulates System Shell | SHELL32.dll::ShellExecuteA SHELL32.dll::SHFileOperationA SHELL32.dll::SHGetFileInfoA |
| WIN32_PROCESS_API | Can Create Process and Threads | KERNEL32.dll::CreateProcessA ADVAPI32.dll::OpenProcessToken KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::LoadLibraryExA KERNEL32.dll::GetDiskFreeSpaceA KERNEL32.dll::GetCommandLineA |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CopyFileA KERNEL32.dll::CreateDirectoryA KERNEL32.dll::CreateFileA KERNEL32.dll::DeleteFileA KERNEL32.dll::MoveFileExA KERNEL32.dll::MoveFileA |
| WIN_BASE_USER_API | Retrieves Account Information | ADVAPI32.dll::LookupPrivilegeValueA |
| WIN_REG_API | Can Manipulate Windows Registry | ADVAPI32.dll::RegCreateKeyExA ADVAPI32.dll::RegDeleteKeyA ADVAPI32.dll::RegOpenKeyExA ADVAPI32.dll::RegQueryValueExA ADVAPI32.dll::RegSetValueExA |
| WIN_USER_API | Performs GUI Actions | USER32.dll::AppendMenuA USER32.dll::EmptyClipboard USER32.dll::FindWindowExA USER32.dll::OpenClipboard USER32.dll::PeekMessageA USER32.dll::CreateWindowExA |
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