MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b36ef72aaa0d415d8b11c46f330258ffee9dd5030e1c7a07398c706f7c048598. 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: 12


Intelligence 12 IOCs YARA 6 File information Comments 1

SHA256 hash: b36ef72aaa0d415d8b11c46f330258ffee9dd5030e1c7a07398c706f7c048598
SHA3-384 hash: 6d56517782de1aaf86e78da745abfebb2f73648d68590211a751afd076a14e1a28e3e2d2daf142f8529af006e0f96ff6
SHA1 hash: 6a0d9eac1dffd5321c909adc2ac26ccc66470844
MD5 hash: 33a45fcbca9c96cf4d9f456d27d87820
humanhash: robin-oregon-skylark-south
File name:33a45fcbca9c96cf4d9f456d27d87820
Download: download sample
Signature GurcuStealer
File size:169'472 bytes
First seen:2023-04-04 03:49:51 UTC
Last seen:2023-04-04 04:29:24 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 3072:/RYdMvZ75FI5cq29AzvWJNXiHzrlXuUu98pU9ED7+ltVswrdmb8MyJ+8bDvLJA:L7sBXHfleUu2U9U7+ltVswBm428bDD6
Threatray 496 similar samples on MalwareBazaar
TLSH T149F37D473B8882F2D8780C73BE93504E2B86BCF45A47C38AA5CBF1161DB17B5492A577
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 6353535353131313 (2 x RedLineStealer, 1 x GurcuStealer, 1 x ExelaStealer)
Reporter zbetcheckin
Tags:32 exe GurcuStealer

Intelligence


File Origin
# of uploads :
2
# of downloads :
247
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
redline
ID:
1
File name:
73b1586d7d158fac313a4a5d33545331.exe
Verdict:
Malicious activity
Analysis date:
2023-03-30 06:33:27 UTC
Tags:
rat redline trojan amadey loader

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

Behaviour
Searching for the window
Launching a process
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Creating a file in the %temp% directory
Reading critical registry keys
Creating a window
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Creating a file
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed packed
Result
Verdict:
UNKNOWN
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 potential unpacker
Allocates memory in foreign processes
Injects a PE file into a foreign processes
Machine Learning detection for sample
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
Tries to harvest and steal browser information (history, passwords, etc)
Uses ping.exe to check the status of other devices and networks
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected Gurcu Stealer
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Casdet
Status:
Malicious
First seen:
2023-03-30 09:01:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Behaviour
Runs ping.exe
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Uses the VBS compiler for execution
Unpacked files
SH256 hash:
49bb799a9128f04beea173856db60e3c062b07a65651e2368670a726f862da5e
MD5 hash:
259da1baa41c04dab3bb1593be908478
SHA1 hash:
887e15f9d84896815cba5ea1bd8e65269b925ce9
SH256 hash:
f72f47cf445891fd5abcdf28aa3127b4dbdae9dfff1a29b69558edc4f6f29b60
MD5 hash:
b8056dfddbe3dce7f9cfcacdaa0c226c
SHA1 hash:
5900476f998bdeddbebdcac55821945cc5d4a89d
SH256 hash:
b36ef72aaa0d415d8b11c46f330258ffee9dd5030e1c7a07398c706f7c048598
MD5 hash:
33a45fcbca9c96cf4d9f456d27d87820
SHA1 hash:
6a0d9eac1dffd5321c909adc2ac26ccc66470844
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: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
Rule name:Suspicious_Macro_Presence
Author:Mehmet Ali Kerimoglu (CYB3RMX)
Description:This rule detects common malicious/suspicious implementations.

File information


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

Web download

GurcuStealer

Executable exe b36ef72aaa0d415d8b11c46f330258ffee9dd5030e1c7a07398c706f7c048598

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2023-04-04 03:49:54 UTC

url : hxxp://193.233.20.36/lend/buildcr.exe