MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9d543df8d1d705870da23de3f9a43f467fe998836fd00d7ffff1ea3c4701e5f9. 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: 9d543df8d1d705870da23de3f9a43f467fe998836fd00d7ffff1ea3c4701e5f9
SHA3-384 hash: 7da7c3ca4971ead20b66f1da922af265faadf3014234a432806016debd25f24abde43bd9a47a6b3afce652a70087bbb0
SHA1 hash: 53a4f3375799babd0fcc08190a925b467e7fede7
MD5 hash: 55f8e0ef95c316591d64a7bf1bf6ce7b
humanhash: mexico-golf-equal-mango
File name:55f8e0ef95c316591d64a7bf1bf6ce7b.exe
Download: download sample
Signature GurcuStealer
Create hunting rule
File size:5'844'628 bytes
First seen:2024-12-14 13:01:52 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/:adOuK6mn9NzgMoYkSIvUcwti7TQlvci6
TLSH T13D46F126F6D500D8E9E74178827B6B67EA7031011310ABDB53D049B96F23BE27A7F319
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 :
361
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
55f8e0ef95c316591d64a7bf1bf6ce7b.exe
Verdict:
Malicious activity
Analysis date:
2024-12-14 13:21:56 UTC
Tags:
github evasion telegram stealer exfiltration arch-doc
Link:
https://app.any.run/tasks/9631d61e-1c65-4115-837a-df7d439b6494

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=675d8494653a8698dfc8356d
Tags:
infosteal virus shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %temp% subdirectories
DNS request
Connection attempt
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Creating a file
Running batch commands
Creating a process with a hidden window
Launching a process
Using the Windows Management Instrumentation requests
Creating a process from a recently created file
Sending an HTTP GET request
Reading critical registry keys
Changing a file
Creating a window
Unauthorized injection to a recently created process
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-vm cmd crypto evasive expand fingerprint lolbin lolbin overlay packed rat
Link:
https://www.filescan.io/uploads/675d81cf98f3f03106e47059/reports/80cccb6c-44b6-453b-9b9b-72865f88f586/overview
Verdict:
Malicious
Labled as:
MSIL.Krypt..Generic
Link:
https://www.hybrid-analysis.com/sample/9d543df8d1d705870da23de3f9a43f467fe998836fd00d7ffff1ea3c4701e5f9
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/cb6f7f27-2e20-4957-bbd2-60f82e1a8c03
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/1575136
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to capture screen (.Net source)
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1575136 Sample: 3edTbzftGf.exe Startdate: 14/12/2024 Architecture: WINDOWS Score: 100 46 api.telegram.org 2->46 48 raw.githubusercontent.com 2->48 50 2 other IPs or domains 2->50 62 Suricata IDS alerts for network traffic 2->62 64 Found malware configuration 2->64 66 Antivirus / Scanner detection for submitted sample 2->66 70 11 other signatures 2->70 10 3edTbzftGf.exe 14 13 2->10         started        signatures3 68 Uses the Telegram API (likely for C&C communication) 46->68 process4 dnsIp5 52 raw.githubusercontent.com 185.199.109.133, 443, 49704, 49705 FASTLYUS Netherlands 10->52 32 C:\Users\user\AppData\...\tempdatalogger.exe, PE32 10->32 dropped 34 C:\Users\user\AppData\...\sqlite.interop.dll, PE32+ 10->34 dropped 36 C:\...\tempdatalogger.exe:Zone.Identifier, ASCII 10->36 dropped 38 C:\Users\user\AppData\...\3edTbzftGf.exe.log, ASCII 10->38 dropped 14 cmd.exe 1 10->14         started        file6 process7 process8 16 tempdatalogger.exe 15 29 14->16         started        20 conhost.exe 14->20         started        22 tasklist.exe 1 14->22         started        24 12 other processes 14->24 dnsIp9 40 ip-api.com 208.95.112.1, 49709, 49711, 49723 TUT-ASUS United States 16->40 42 api.telegram.org 149.154.167.220, 443, 49725 TELEGRAMRU United Kingdom 16->42 44 google.com 172.217.17.46 GOOGLEUS United States 16->44 54 Antivirus detection for dropped file 16->54 56 Multi AV Scanner detection for dropped file 16->56 58 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 16->58 60 2 other signatures 16->60 26 cmd.exe 16->26         started        signatures10 process11 process12 28 conhost.exe 26->28         started        30 chcp.com 26->30         started       
Score:
91%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/9d543df8d1d705870da23de3f9a43f467fe998836fd00d7ffff1ea3c4701e5f9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9d543df8d1d705870da23de3f9a43f467fe998836fd00d7ffff1ea3c4701e5f9/
Threat name:
ByteCode-MSIL.Infostealer.Dcstl
Create hunting rule
Status:
Malicious
First seen:
2024-12-14 11:25:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tvkd36gr24cyodnchxr7tjb7iz76tgedn7ia27776hvdyryb4x4q._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/241214-p9sy1aspcy/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Browser Information Discovery
Enumerates physical storage devices
Enumerates processes with tasklist
Legitimate hosting services abused for malware hosting/C2
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
Gurcu family
Gurcu, WhiteSnake
Malware Config
C2 Extraction:
https://api.telegram.org/bot7822020748:AAGrioLZvBM_jgQaep0KKTha1_5Kzmwl62s/sendDocument?chat_id=7538374929&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/b7634976-884f-42ec-a8c5-a340ad3026a4
Unpacked files
SH256 hash:
8c54a0c612a5b712a34dd82259288363a873b14751b6b13980c5a4011b65f3a0
MD5 hash:
e5a4e297f3501cddd1f1e949b56e97b2
SHA1 hash:
d7d5886ed673f5b87543faab52c17e6eb555f3c5
Link:
https://www.unpac.me/results/f20e6929-fb2c-40b9-b78b-5a55f25912e2/
SH256 hash:
ea232c00f9a2829dfbde441faaa24aec4633f44fb675b19fb07d4f7b4d88b1b7
MD5 hash:
2798b0dbe94b76775df1e9888dbc645e
SHA1 hash:
88b8bc660d0609770016f218b0eb14a9c876cfc6
Link:
https://www.unpac.me/results/f20e6929-fb2c-40b9-b78b-5a55f25912e2/
SH256 hash:
27f51d1b9063bf6eb950f984183a54d918ce270202239993925b65ce3819ff15
MD5 hash:
11be87148a27773e9f724f4554d201e0
SHA1 hash:
fb2b5192edabcc2b722c2ae090f483642ca9e76f
Link:
https://www.unpac.me/results/f20e6929-fb2c-40b9-b78b-5a55f25912e2/
SH256 hash:
9d543df8d1d705870da23de3f9a43f467fe998836fd00d7ffff1ea3c4701e5f9
MD5 hash:
55f8e0ef95c316591d64a7bf1bf6ce7b
SHA1 hash:
53a4f3375799babd0fcc08190a925b467e7fede7
Link:
https://www.unpac.me/results/f20e6929-fb2c-40b9-b78b-5a55f25912e2/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/9d543df8d1d7/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 9d543df8d1d705870da23de3f9a43f467fe998836fd00d7ffff1ea3c4701e5f9

(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