MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f8fd7b7eabb7b70e3f5a13bf8526eb620522a3c0aac6caf05b4db83d13e1e625. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f8fd7b7eabb7b70e3f5a13bf8526eb620522a3c0aac6caf05b4db83d13e1e625
SHA3-384 hash: 8e1254033c5f6140014d69359703d12193999c32b502870c720ff847d0c259c02c48e76cb39259a27b4b0ff169d93dae
SHA1 hash: 9ad9460ca70e2c603c693c3ea97e29b9b06d3d57
MD5 hash: f693e2f2661b6e5824ccd29e5ba58bb6
humanhash: orange-twenty-batman-ohio
File name:SecuriteInfo.com.Trojan.Mardom.IN.24.23026.16313
Download: download sample
Signature GurcuStealer
Create hunting rule
File size:155'224 bytes
First seen:2023-06-07 14:33:09 UTC
Last seen:2023-06-07 15:28:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'076 x AgentTesla, 20'038 x Formbook, 12'353 x SnakeKeylogger)
ssdeep 3072:r3I1ulD0nLS/wtsaLi4rJPd1F9b2NvvrG/pchkwglSOxAWP0w:LI1ulD0nLS/wtsaLiAJZ9b2ZvrCOgM7s
TLSH T1A2E33C45F2887CE2D11B4A77D4B5FA059335F303294E660A2DFAF04A59B33C22692D6F
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon 336b1737373f3f37 (5 x DCRat, 4 x GurcuStealer, 1 x RedLineStealer)
Reporter SecuriteInfoCom
Tags:exe GurcuStealer

Intelligence

File Origin
# of uploads :
2
# of downloads :
316
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Trojan.Mardom.IN.24.23026.16313
Verdict:
Malicious activity
Analysis date:
2023-06-07 14:35:48 UTC
Tags:
evasion
Link:
https://app.any.run/tasks/95a87f54-4c5c-4c47-9d27-674cc28e3d0a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/396509/
Detection(s):
SecuriteInfo.com.Trojan.Mardom.IN.24.23026.16313.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a process from a recently created file
Reading critical registry keys
Creating a file in the %temp% directory
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Moving a recently created file
Creating a window
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
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:
anti-vm lolbin overlay packed packed
Link:
https://www.filescan.io/uploads/6480955b2b2309bb7004504a/reports/6d319e0f-acd7-40bb-a515-6ca1e897d340/overview
Verdict:
Malicious
Labled as:
Trojan.Mardom.IN.Generic
Link:
https://www.hybrid-analysis.com/sample/f8fd7b7eabb7b70e3f5a13bf8526eb620522a3c0aac6caf05b4db83d13e1e625
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d3118056-424c-4bf6-8e14-7deef8070061
Result
Threat name:
Gurcu Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1250408
Signature
.NET source code contains very large strings
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Found Tor onion address
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 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)
Self deletion via cmd or bat file
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 schtasks.exe or at.exe to add and modify task schedules
Uses the Telegram API (likely for C&C communication)
Yara detected Generic Downloader
Yara detected Gurcu Stealer
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 883425 Sample: SecuriteInfo.com.Trojan.Mar... Startdate: 07/06/2023 Architecture: WINDOWS Score: 100 100 Found malware configuration 2->100 102 Multi AV Scanner detection for submitted file 2->102 104 Yara detected Gurcu Stealer 2->104 106 8 other signatures 2->106 10 SecuriteInfo.com.Trojan.Mardom.IN.24.23026.16313.exe 7 2->10         started        14 SecuriteInfo.com.Trojan.Mardom.IN.24.23026.16313.exe 4 2->14         started        17 SecuriteInfo.com.Trojan.Mardom.IN.24.23026.16313.exe 2->17         started        19 SecuriteInfo.com.Trojan.Mardom.IN.24.23026.16313.exe 2 2->19         started        process3 dnsIp4 60 SecuriteInfo.com.T....24.23026.16313.exe, PE32 10->60 dropped 62 SecuriteInfo.com.T...23026.16313.exe.log, CSV 10->62 dropped 64 SecuriteInfo.com.T...exe:Zone.Identifier, ASCII 10->64 dropped 112 Self deletion via cmd or bat file 10->112 21 cmd.exe 1 10->21         started        88 192.168.2.1 unknown unknown 14->88 90 ip-api.com 14->90 114 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->114 116 Tries to steal Mail credentials (via file / registry access) 14->116 118 Tries to harvest and steal browser information (history, passwords, etc) 14->118 24 tor.exe 14->24         started        26 WerFault.exe 14->26         started        28 tor.exe 17->28         started        30 WerFault.exe 17->30         started        file5 signatures6 process7 signatures8 108 Uses schtasks.exe or at.exe to add and modify task schedules 21->108 110 Uses ping.exe to check the status of other devices and networks 21->110 32 SecuriteInfo.com.Trojan.Mardom.IN.24.23026.16313.exe 14 8 21->32         started        36 PING.EXE 1 21->36         started        38 conhost.exe 21->38         started        44 2 other processes 21->44 40 conhost.exe 24->40         started        42 conhost.exe 28->42         started        process9 dnsIp10 74 ip-api.com 208.95.112.1, 49721, 49731, 80 TUT-ASUS United States 32->74 76 api.telegram.org 149.154.167.220, 443, 49741 TELEGRAMRU United Kingdom 32->76 80 9 other IPs or domains 32->80 92 Multi AV Scanner detection for dropped file 32->92 94 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 32->94 96 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 32->96 98 4 other signatures 32->98 46 tar.exe 15 32->46         started        49 tor.exe 10 32->49         started        78 127.0.0.1 unknown unknown 36->78 signatures11 process12 dnsIp13 66 C:\Users\user\AppData\Local\...\tor.exe, PE32+ 46->66 dropped 68 C:\Users\user\AppData\...\tor-gencert.exe, PE32+ 46->68 dropped 70 C:\Users\user\...\snowflake-client.exe, PE32+ 46->70 dropped 72 C:\Users\user\AppData\...\obfs4proxy.exe, PE32+ 46->72 dropped 52 conhost.exe 46->52         started        82 213.144.135.21, 443, 49724 INIT7CH Switzerland 49->82 84 178.254.6.130, 443, 49726 EVANZOASDE Germany 49->84 86 65.108.253.128, 443, 49725 ALABANZA-BALTUS United States 49->86 54 conhost.exe 49->54         started        file14 process15 process16 56 WerFault.exe 52->56         started        58 WerFault.exe 52->58         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f8fd7b7eabb7b70e3f5a13bf8526eb620522a3c0aac6caf05b4db83d13e1e625/
Threat name:
Win32.Trojan.SpywareX
Create hunting rule
Status:
Malicious
First seen:
2023-06-04 19:41:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7d6xw7vlw63q4p22co7ykjxlmicsfi6avldmv4c3jw4d2e7b4ysq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
collection discovery spyware stealer
Link:
https://tria.ge/reports/230607-rxexqacc4w/
Behaviour
Creates scheduled task(s)
Modifies system certificate store
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Program crash
Accesses Microsoft Outlook profiles
Checks installed software on the system
Looks up external IP address via web service
Checks computer location settings
Deletes itself
Executes dropped EXE
Reads user/profile data of web browsers
Unpacked files
SH256 hash:
0c4f1f2f2fbc15a1ca065492cd4818bd967cd442f836f847d29a2839bbd6641e
MD5 hash:
d103b6850afafbed7bb15c4e323a2de2
SHA1 hash:
16853d4fb6250afd46d2cd8230553ffde60a2517
Link:
https://www.unpac.me/results/b7e0a9e1-de27-44e2-976d-be6ba9f23726/
SH256 hash:
f8fd7b7eabb7b70e3f5a13bf8526eb620522a3c0aac6caf05b4db83d13e1e625
MD5 hash:
f693e2f2661b6e5824ccd29e5ba58bb6
SHA1 hash:
9ad9460ca70e2c603c693c3ea97e29b9b06d3d57
Link:
https://www.unpac.me/results/b7e0a9e1-de27-44e2-976d-be6ba9f23726/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f8fd7b7eabb7/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f8fd7b7eabb7b70e3f5a13bf8526eb620522a3c0aac6caf05b4db83d13e1e625

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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:Skystars_Malware_Imphash
Create hunting rule
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

GurcuStealer

Executable exe f8fd7b7eabb7b70e3f5a13bf8526eb620522a3c0aac6caf05b4db83d13e1e625

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2654691/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/396509/

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