MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2a06b6535a0057b961f41e9b0790ffbc6f540566f2c21ae66cee4b61f5a360eb. 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: 15


Intelligence 15 IOCs YARA 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2a06b6535a0057b961f41e9b0790ffbc6f540566f2c21ae66cee4b61f5a360eb
SHA3-384 hash: b76eb6005738936fd16b35655e1e3f764e85e9d45fa5d905b7e221b495946759dcb827aa9da6c782e25bd60b644d11f2
SHA1 hash: 64709ca99a03f416a854817427d4543043e204ad
MD5 hash: 177a970a8a6c5e5e6b5c04c40bf3fe1c
humanhash: louisiana-shade-mountain-lake
File name:177a970a8a6c5e5e6b5c04c40bf3fe1c.exe
Download: download sample
Signature GurcuStealer
Create hunting rule
File size:5'844'480 bytes
First seen:2024-12-13 16:46:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 98304:aGl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6Uc:adOuK6mn9NzgMoYkSIvUcwti7TQlvciE
TLSH T13E46F126F6D500D8E9E74178827B6B67EA7031011310ABDB53D049B96F23BE27A7F319
TrID 44.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
34.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
6.3% (.EXE) Win64 Executable (generic) (10522/11/4)
3.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
Reporter abuse_ch
Tags:exe GurcuStealer

Intelligence

File Origin
# of uploads :
1
# of downloads :
424
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
177a970a8a6c5e5e6b5c04c40bf3fe1c.exe
Verdict:
Malicious activity
Analysis date:
2024-12-13 16:54:00 UTC
Tags:
github telegram evasion stealer exfiltration arch-doc
Link:
https://app.any.run/tasks/6b5df2f1-41d4-49be-837b-af38b2b36b79

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Cdmip-10038471-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=675c66c48fb73f13afc2ef97
Tags:
infosteal virus shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Reading critical registry keys
Changing a file
Creating a window
Creating a file
Running batch commands
Creating a process with a hidden window
Сreating synchronization primitives
Creating a file in the %temp% subdirectories
DNS request
Connection attempt
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-vm cmd crypto evasive expand fingerprint lolbin packed rat
Link:
https://www.filescan.io/uploads/675c651044508638b97a456d/reports/256e0a91-a7cb-4c50-a9dd-5df59057bf0a/overview
Verdict:
Malicious
Labled as:
MSIL.Krypt..Generic
Link:
https://www.hybrid-analysis.com/sample/2a06b6535a0057b961f41e9b0790ffbc6f540566f2c21ae66cee4b61f5a360eb
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.
Malware family:
Sofacy
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7fe309e6-82c4-4061-82a5-4cc2a30f6875
Result
Threat name:
Discord Token Stealer, DotStealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1574860
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Contains functionality to capture screen (.Net source)
Found malware configuration
Machine Learning detection for sample
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Self deletion via cmd or bat file
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Uses the Telegram API (likely for C&C communication)
Yara detected Costura Assembly Loader
Yara detected Discord Token Stealer
Yara detected DotStealer
Yara detected Telegram RAT
Yara detected Telegram Recon
Behaviour
Behavior Graph:
Download SVG
Score:
49%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/2a06b6535a0057b961f41e9b0790ffbc6f540566f2c21ae66cee4b61f5a360eb
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2a06b6535a0057b961f41e9b0790ffbc6f540566f2c21ae66cee4b61f5a360eb/
Threat name:
ByteCode-MSIL.Trojan.Amadey
Create hunting rule
Status:
Malicious
First seen:
2024-12-13 16:47:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fidlmu22abl3sypud2nqpeh7xrxviblg6lbbvztm5zfwd5ndmdvq._file
Verdict:
malicious
Label(s):
milleniumrat
Create hunting rule
Similar samples:
error
GurcuStealer
Result
Malware family:
gurcu
Create hunting rule
Score:
  10/10
Tags:
family:gurcu discovery spyware stealer
Link:
https://tria.ge/reports/241213-vajtyawncr/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Browser Information Discovery
Enumerates physical storage devices
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Checks computer location settings
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Gurcu family
Gurcu, WhiteSnake
Malware Config
C2 Extraction:
https://api.telegram.org/bot8137653339:AAG5i0WFhwI1I4U5IchQ2c9wOIxNBiamQsk/sendDocument?chat_id=6518356118&caption=%F0%9F%92%A0DOTSTEALER%F0%9F%92%A0%0A%F0%9F%92%ABNew%20log:%0AIP:%20181.215.176.83%0AUsername:%20Admin%0ALocation:%20United%20Kingdom%20[GB],%20London,%20Englan
Verdict:
Malicious
Tags:
Win.Packed.Cdmip-10038471-0
YARA:
n/a
Link:
https://app.threat.zone/submission/2371aa94-09c2-4cb7-979e-da15fbbc62d8
Unpacked files
SH256 hash:
8c54a0c612a5b712a34dd82259288363a873b14751b6b13980c5a4011b65f3a0
MD5 hash:
e5a4e297f3501cddd1f1e949b56e97b2
SHA1 hash:
d7d5886ed673f5b87543faab52c17e6eb555f3c5
Link:
https://www.unpac.me/results/fe4220b4-0b6d-482f-bb90-a8a0e9b54678/
SH256 hash:
3762d144cf65103349c441869b1916cccd7c9737fd1cdde9122be5ac9eb66205
MD5 hash:
9385feae348a66572dbeca8da317c363
SHA1 hash:
5c2e7a497a30471a8e02ad159dc9d26f9450eca9
Link:
https://www.unpac.me/results/fe4220b4-0b6d-482f-bb90-a8a0e9b54678/
SH256 hash:
2a06b6535a0057b961f41e9b0790ffbc6f540566f2c21ae66cee4b61f5a360eb
MD5 hash:
177a970a8a6c5e5e6b5c04c40bf3fe1c
SHA1 hash:
64709ca99a03f416a854817427d4543043e204ad
Link:
https://www.unpac.me/results/fe4220b4-0b6d-482f-bb90-a8a0e9b54678/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2a06b6535a00/report/overview.html
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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:grakate_stealer_nov_2021
Create hunting rule
Rule name:INDICATOR_EXE_Packed_Fody
Create hunting rule
Author:ditekSHen
Description:Detects executables manipulated with Fody
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxComputerNames
Create hunting rule
Author:ditekSHen
Description:Detects executables containing possible sandbox analysis VM names
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxUserNames
Create hunting rule
Author:ditekSHen
Description:Detects executables containing possible sandbox analysis VM usernames
Rule name:INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:telegram_bot_api
Create hunting rule
Author:rectifyq
Description:Detects file containing Telegram Bot API

File information

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

Web download

GurcuStealer

Executable exe 2a06b6535a0057b961f41e9b0790ffbc6f540566f2c21ae66cee4b61f5a360eb

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3347060/
  
Delivery method
Distributed via web download

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments