MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c6359593885cdae14233966dd15cd5b0fa207b97b4bf13c0817f2e124b07630. 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


Intelligence 11 IOCs YARA File information Comments

SHA256 hash: 4c6359593885cdae14233966dd15cd5b0fa207b97b4bf13c0817f2e124b07630
SHA3-384 hash: cf2aabca2dae4e97cf2ea307b4c4e20759bfcac087b6c0776287584c1e868437812b4341860d0d83823e6e9776be365a
SHA1 hash: 15ca8b91a4bc2d7b2b92922abaeb9e663a144caf
MD5 hash: b6ba4c0a0d8a6137a2953845c03ab249
humanhash: washington-early-video-thirteen
File name:4c.exe
Download: download sample
Signature GurcuStealer
File size:393'820 bytes
First seen:2023-08-02 12:05:08 UTC
Last seen:2023-08-07 12:46:28 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash fa8d20faea9ef7b4e2b7fbfe93442593 (17 x RedLineStealer, 4 x CoinMiner, 3 x AgentTesla)
ssdeep 6144:EN3DB60MGC1DI9cV2Qb91CWIoZsBvukHLM8ms6ONg1KyJCsy3Y+:Q3DkEGDINi1EtZukY8GONM9ryF
Threatray 104 similar samples on MalwareBazaar
TLSH T17184D022BAC084B1D4A508351ED2E772BB7DBD301B258BD757847B2F5F340E1AA36693
TrID 40.3% (.EXE) Win64 Executable (generic) (10523/12/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4505/5/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 64646c6c6c646c0d (3 x ExelaStealer, 3 x Babadeda, 1 x EternityStealer)
Reporter 0x746f6d6669
Tags:exe GurcuStealer

Intelligence


File Origin
# of uploads :
2
# of downloads :
288
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4c.exe
Verdict:
Malicious activity
Analysis date:
2023-08-02 12:08:07 UTC
Tags:
evasion

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Creating a file
Running batch commands
Creating a process with a hidden window
Launching a process
DNS request
Reading critical registry keys
Sending a custom TCP request
Sending an HTTP GET request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Stealing user critical data
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware lolbin overlay packed setupapi shdocvw shell32
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.
Result
Threat name:
Gurcu Stealer
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Antivirus detection for URL or domain
Contains functionality to capture screen (.Net source)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Found Tor onion address
Machine Learning detection for dropped file
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
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 ping.exe to check the status of other devices and networks
Uses schtasks.exe or at.exe to add and modify task schedules
Uses the Telegram API (likely for C&C communication)
Yara detected Gurcu Stealer
Yara detected Telegram RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1284391 Sample: 4c.exe Startdate: 02/08/2023 Architecture: WINDOWS Score: 100 72 Found malware configuration 2->72 74 Antivirus detection for URL or domain 2->74 76 Multi AV Scanner detection for submitted file 2->76 78 7 other signatures 2->78 10 4c.exe 10 2->10         started        13 3frf.exe 2 2->13         started        process3 file4 50 C:\Users\user\AppData\Local\Temp\...\3frf.exe, PE32 10->50 dropped 15 3frf.exe 6 10->15         started        process5 file6 52 C:\Users\user\AppData\Local\...\3frf.exe, PE32 15->52 dropped 68 Multi AV Scanner detection for dropped file 15->68 70 Machine Learning detection for dropped file 15->70 19 cmd.exe 1 15->19         started        signatures7 process8 signatures9 80 Uses schtasks.exe or at.exe to add and modify task schedules 19->80 82 Uses ping.exe to check the status of other devices and networks 19->82 22 3frf.exe 14 8 19->22         started        26 PING.EXE 1 19->26         started        28 conhost.exe 19->28         started        30 2 other processes 19->30 process10 dnsIp11 60 ip-api.com 208.95.112.1, 49712, 80 TUT-ASUS United States 22->60 62 api.telegram.org 149.154.167.220, 443, 49719 TELEGRAMRU United Kingdom 22->62 66 3 other IPs or domains 22->66 84 Multi AV Scanner detection for dropped file 22->84 86 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 22->86 88 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 22->88 90 5 other signatures 22->90 32 tar.exe 15 22->32         started        35 tor.exe 15 22->35         started        64 127.0.0.1 unknown unknown 26->64 signatures12 process13 dnsIp14 42 C:\Users\user\AppData\Local\...\tor.exe, PE32+ 32->42 dropped 44 C:\Users\user\AppData\...\tor-gencert.exe, PE32+ 32->44 dropped 46 C:\Users\user\...\snowflake-client.exe, PE32+ 32->46 dropped 48 C:\Users\user\AppData\...\obfs4proxy.exe, PE32+ 32->48 dropped 38 conhost.exe 32->38         started        54 45.155.168.206, 443, 49715 NETRIX-ASNetrixFR France 35->54 56 217.79.181.38, 49721, 9001 MYLOC-ASIPBackboneofmyLocmanagedITAGDE Germany 35->56 58 4 other IPs or domains 35->58 40 conhost.exe 35->40         started        file15 process16
Threat name:
Win32.Spyware.Whitesnake
Status:
Malicious
First seen:
2023-07-30 04:13:00 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
25 of 38 (65.79%)
Threat level:
  2/5
Result
Malware family:
n/a
Score:
  7/10
Tags:
spyware stealer
Behaviour
Creates scheduled task(s)
Modifies system certificate store
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Looks up external IP address via web service
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Unpacked files
SH256 hash:
bcae2307b46542dd9dcebf5c7fc2f17afe942f05e3c3641b8bdcb105cbd6abed
MD5 hash:
3e50e64eb6c5657d7b1c09e1ff79eded
SHA1 hash:
a4a3b0b6242300662d7d4899e0a6beb179787dbf
SH256 hash:
4c6359593885cdae14233966dd15cd5b0fa207b97b4bf13c0817f2e124b07630
MD5 hash:
b6ba4c0a0d8a6137a2953845c03ab249
SHA1 hash:
15ca8b91a4bc2d7b2b92922abaeb9e663a144caf
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


The table below shows additional information about this malware sample such as delivery method and external references.

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