MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 5392bfbbc84541d99563511dfa736ec514642b68292089154e0126f0e9eddf37. 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
GurcuStealer
Vendor detections: 11
| SHA256 hash: | 5392bfbbc84541d99563511dfa736ec514642b68292089154e0126f0e9eddf37 |
|---|---|
| SHA3-384 hash: | bf6172478d89a4c14bfc741adf0f1d8ac34c9812bcfe4ef414a330c129ec969ddc3aa5cd034f397dfb19b1b9f14fbcd9 |
| SHA1 hash: | cea3fa7f0358089e0ce7786606346d893c7be4a5 |
| MD5 hash: | 3bcc1eb867ab61418fe7a99dcffa3734 |
| humanhash: | spaghetti-neptune-oranges-lake |
| File name: | 3bcc1eb867ab61418fe7a99dcffa3734 |
| Download: | download sample |
| Signature | GurcuStealer |
| File size: | 787'456 bytes |
| First seen: | 2023-06-09 09:07:21 UTC |
| Last seen: | 2023-06-09 09:57:46 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 3072:Zxyod3gsuVf/LxMmKvcAznwucfxBmN9Cm55l6bNU:xiflLK0CU7hyl6S |
| Threatray | 298 similar samples on MalwareBazaar |
| TLSH | T1F0F4B02162E9CFD0C59F2475EC96B1F84617EE10CC109FDB3D88BE1A39B22A5A97114F |
| TrID | 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10523/12/4) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.3% (.EXE) Win32 Executable (generic) (4505/5/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9) |
| File icon (PE): |  |
| dhash icon | 0f519373d9cc750b (107 x AgentTesla, 20 x AveMariaRAT, 5 x Formbook) |
| Reporter |  zbetcheckin |
| Tags: | 32 89-23-96-203 exe GurcuStealer |
Intelligence
File Origin
# of uploads :
2
# of downloads :
290
Origin country :
FRVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
3bcc1eb867ab61418fe7a99dcffa3734
Verdict:
Malicious activity
Analysis date:
2023-06-09 09:10:42 UTC
Tags:
evasion
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
Creating a file
Reading critical registry keys
DNS request
Sending an HTTP GET request
Using the Windows Management Instrumentation requests
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Stealing user critical data
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
obfuscated packed packed
Verdict:
Malicious
Labled as:
IL:Trojan.MSILMamut
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:
Malicious
Result
Threat name:
Gurcu Stealer
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains very large strings
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for dropped file
Machine Learning detection for sample
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses known network protocols on non-standard ports
Uses ping.exe to check the status of other devices and networks
Uses the Telegram API (likely for C&C communication)
Yara detected Gurcu Stealer
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Mamut
Status:
Malicious
First seen:
2023-06-09 09:08:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
27
AV detection:
14 of 24 (58.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 288 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
collection discovery spyware stealer
Behaviour
Modifies system certificate store
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Accesses Microsoft Outlook profiles
Checks installed software on the system
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Unpacked files
SH256 hash:
a83f50c1a41c0983d132fef61d20693e6807792534e4ab4b6ea77a32ea5c18d4
MD5 hash:
7c1cfd20b24b912534716c2ca03af538
SHA1 hash:
f374744c9c7ecff644cc9fb11a77eb10b737577d
SH256 hash:
5392bfbbc84541d99563511dfa736ec514642b68292089154e0126f0e9eddf37
MD5 hash:
3bcc1eb867ab61418fe7a99dcffa3734
SHA1 hash:
cea3fa7f0358089e0ce7786606346d893c7be4a5
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: | INDICATOR_EXE_Packed_SmartAssembly |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with SmartAssembly |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
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