MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a. 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


GuLoader


Vendor detections: 11


Intelligence 11 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a
SHA3-384 hash: 4cb70bd224d2f05df393a7f3409bdafff12a5e22d745136bdb472d7d967fffb7bfc1dd8ce8543e878c6a7df9f355a133
SHA1 hash: 47568ce8cc356ad3858fc25c334e63d7b8742849
MD5 hash: db69af7fee69d61e4eb0268afb7cd9f8
humanhash: sink-spaghetti-missouri-montana
File name:db69af7fee69d61e4eb0268afb7cd9f8
Download: download sample
Signature GuLoader
Create hunting rule
File size:293'112 bytes
First seen:2023-07-11 12:40:59 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (300 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 6144:mz2PI+nT0UvWKIAaMBzLpPCyw7QlBRg5cb3k+mKbG/ICLJqZ:BI4xTIJMxLoNiDkhKdCcZ
Threatray 930 similar samples on MalwareBazaar
TLSH T19F54126D6FE09D6BD0A2867009FFE73DF63ABA060151190B1B510FBA3C79155EE2C18B
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 120cfc9aa6b69ea6 (1 x Smoke Loader, 1 x GuLoader)
Reporter zbetcheckin
Tags:32 exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-10-30T05:29:04Z
Valid to:2025-10-29T05:29:04Z
Serial number: 4fdbd1781f6f75216f0d067b2160af42a2834463
Thumbprint Algorithm:SHA256
Thumbprint: 4b30e9ffe56c19552c655c97fecdd7a4a46fc85ed95505143324463d0b65d4e1
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
287
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
db69af7fee69d61e4eb0268afb7cd9f8
Verdict:
Suspicious activity
Analysis date:
2023-07-11 12:42:13 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/2fbbdbcb-b6fc-4941-afc3-d632342e5ac0

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/415595/
Detection(s):
SecuriteInfo.com.Trojan.DownLoad4.12041.10.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/97150/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/64ad4de6b1d2dc145c1c4773/reports/13502f17-604d-43f6-a036-7d9d930620f9/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/8659effe-6225-4f01-a605-8bba9043c978
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1270878
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1270878 Sample: QLUwhFtLr7.exe Startdate: 11/07/2023 Architecture: WINDOWS Score: 100 34 www.zfjisumk.com 2->34 36 www.valutazioneimpatto.com 2->36 38 20 other IPs or domains 2->38 56 Snort IDS alert for network traffic 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 8 other signatures 2->62 11 QLUwhFtLr7.exe 29 2->11         started        signatures3 process4 file5 30 C:\Users\user\AppData\Local\...\System.dll, PE32 11->30 dropped 32 C:\Users\user\AppData\Local\...\osetupui.dll, PE32 11->32 dropped 70 Tries to detect Any.run 11->70 15 QLUwhFtLr7.exe 6 11->15         started        signatures6 process7 dnsIp8 46 192.3.179.134, 49827, 80 AS-COLOCROSSINGUS United States 15->46 48 Modifies the context of a thread in another process (thread injection) 15->48 50 Tries to detect Any.run 15->50 52 Maps a DLL or memory area into another process 15->52 54 2 other signatures 15->54 19 explorer.exe 6 28 15->19 injected signatures9 process10 dnsIp11 40 www.panzerapish.cfd 109.123.121.243, 49937, 80 UK2NET-ASGB United Kingdom 19->40 42 blackbeardbar.com 15.197.142.173, 49964, 80 TANDEMUS United States 19->42 44 13 other IPs or domains 19->44 64 System process connects to network (likely due to code injection or exploit) 19->64 23 mstsc.exe 19->23         started        signatures12 process13 signatures14 66 Modifies the context of a thread in another process (thread injection) 23->66 68 Maps a DLL or memory area into another process 23->68 26 cmd.exe 1 23->26         started        process15 process16 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Suspicious
First seen:
2023-07-11 12:42:03 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ozcek3vegphiovowi5dnoqqlzsen6n32yescmv7wikgevhcrc45a._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
15e3a34b2bd7ad520d87fe902eee65f35049cc5bc3579bbb5182dfb91e3fd289
GuLoader
2bcbb670647ed04d137cfb1d8a8fda4f7dbd1b3d668a99efc034539691e35514
GuLoader
4d6ae0a40fcc30fab170c3e70dd5076253ddf9fa6ec0886d39cffbd9df99ae52
GuLoader
7feb0133d36aafdd1b2ba2dbae6ea92c8cefee7b48b82cbcd736dc729196a3e5
GuLoader
8731774a17b8d40b743f7fd6ff83d45ca5890f8e1371be8a0755186f2fc3cda0
GuLoader
c1e64e86dd89a5820bbb518ead2176741f91d3bf5c579e154533d44e816c1f76
GuLoader
e4b6f95557a2356d046da60a1ca4e52d302618108fae774b8128ffc0586366e0
GuLoader
+ 920 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:guloader campaign:al05 downloader rat spyware stealer trojan
Link:
https://tria.ge/reports/230711-pwr5jsab2s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Loads dropped DLL
Formbook payload
Formbook
Guloader,Cloudeye
Unpacked files
SH256 hash:
681382f3134de5c6272a49dd13651c8c201b89c247b471191496e7335702fa59
MD5 hash:
2ae993a2ffec0c137eb51c8832691bcb
SHA1 hash:
98e0b37b7c14890f8a599f35678af5e9435906e1
Link:
https://www.unpac.me/results/058f3a29-a903-4dae-bd4e-debb5b271728/
SH256 hash:
7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a
MD5 hash:
db69af7fee69d61e4eb0268afb7cd9f8
SHA1 hash:
47568ce8cc356ad3858fc25c334e63d7b8742849
Link:
https://www.unpac.me/results/058f3a29-a903-4dae-bd4e-debb5b271728/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/7644456ea433/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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits

File information

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

Web download

GuLoader

Executable exe 7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2680640/
Cape
Cape
https://www.capesandbox.com/analysis/415595/

Comments


Avatar
zbet commented on 2023-07-11 12:41:00 UTC

url : hxxp://192.3.179.134/400/win.exe