MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ffc73cfd8d1964491159c87fc2d6fdd221716b06c7562b56039db4a29f9631c9. 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: 10
| SHA256 hash: | ffc73cfd8d1964491159c87fc2d6fdd221716b06c7562b56039db4a29f9631c9 |
|---|---|
| SHA3-384 hash: | 6ce7dbeffd758694a3d4fcd3ba4aa04802220ba6b1ac066f4a7e5f8d0b7bb13efa4c1f7fb353491234361d91d1fdf567 |
| SHA1 hash: | 52a476f7f01bb293ed654287391b435da4a027a0 |
| MD5 hash: | 3323830f1a658cab413fdc71ac6218b3 |
| humanhash: | equal-shade-speaker-lima |
| File name: | Embmake.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 10'745'344 bytes |
| First seen: | 2023-11-28 15:10:34 UTC |
| Last seen: | 2023-11-28 16:19:23 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 5e5ac8ab7be27ac2d1c548e5589378b6 (11 x GuLoader, 6 x Stealc, 5 x RedLineStealer) |
| ssdeep | 196608:HWjk2YfctiVki4mQQfPZIZv9tKGsgkQ+KHH5EjLFyeKhcKts:HwYUt5mN3YtbnHZALFRnKts |
| Threatray | 3 similar samples on MalwareBazaar |
| TLSH | T17AB633EB97D34E67CD7B8DB43EEB9A99076CA4CE58B647B8333B1849019131E40DE904 |
| TrID | 34.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 23.4% (.EXE) Win32 Executable (generic) (4505/5/1) 10.7% (.EXE) Win16/32 Executable Delphi generic (2072/23) 10.5% (.EXE) OS/2 Executable (generic) (2029/13) 10.4% (.EXE) Generic Win/DOS Executable (2002/3) |
| Reporter |  Xev |
| Tags: | exe GuLoader |
Intelligence
File Origin
# of uploads :
2
# of downloads :
295
Origin country :
GRVendor Threat Intelligence
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
Creating a file in the %temp% directory
Creating a file
Searching for analyzing tools
Enabling the 'hidden' option for files in the %temp% directory
Running batch commands
Creating a process with a hidden window
Launching a process
Using the Windows Management Instrumentation requests
Searching for synchronization primitives
Creating a process from a recently created file
Gathering data
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
lolbin packed shell32
Verdict:
Malicious
Labled as:
Trojan.Generic
Result
Verdict:
MALICIOUS
Verdict:
Unknown
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
84 / 100
Signature
Antivirus / Scanner detection for submitted sample
Detected unpacking (changes PE section rights)
Hides threads from debuggers
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
PE file has nameless sections
Tries to detect sandboxes and other dynamic analysis tools (window names)
Uses cmd line tools excessively to alter registry or file data
Behaviour
Behavior Graph:
Score:
97%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2023-11-26 14:44:33 UTC
File Type:
PE (Exe)
AV detection:
22 of 23 (95.65%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
suspicious
Result
Malware family:
n/a
Score:
8/10
Tags:
evasion
Behaviour
Delays execution with timeout.exe
Enumerates processes with tasklist
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Views/modifies file attributes
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Executes dropped EXE
Loads dropped DLL
Sets file to hidden
Unpacked files
SH256 hash:
fb3cd2b1b1c1eef2e148b8ca91ef4bf9eca56ec796b7d4cc0d6c81dfe811efd7
MD5 hash:
d55231e7b0909f321d8be2153b19c0f8
SHA1 hash:
4117c74d606af39cad673a5c8c26b4228e7ebaad
SH256 hash:
ffc73cfd8d1964491159c87fc2d6fdd221716b06c7562b56039db4a29f9631c9
MD5 hash:
3323830f1a658cab413fdc71ac6218b3
SHA1 hash:
52a476f7f01bb293ed654287391b435da4a027a0
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | Borland |
|---|---|
| Author: | malware-lu |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__RemoteAPI |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerHiding__Thread |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | EnigmaStub |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies Enigma packer stub. |
| Rule name: | maldoc_getEIP_method_1 |
|---|---|
| Author: | Didier Stevens (https://DidierStevens.com) |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
| Rule name: | RC6_Constants |
|---|---|
| Author: | chort (@chort0) |
| Description: | Look for RC6 magic constants in binary |
| Reference: | https://twitter.com/mikko/status/417620511397400576 |
| Rule name: | RIPEMD160_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for RIPEMD-160 constants |
| Rule name: | SHA1_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA1 constants |
| Rule name: | SHA512_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA384/SHA512 constants |
| Rule name: | ThreadControl__Context |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | vmdetect |
|---|---|
| Author: | nex |
| Description: | Possibly employs anti-virtualization techniques |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
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