MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5aedaa7f3fbb1f5b4fba69015d223a0e68deab2a84fe6e718654496964723d43. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5aedaa7f3fbb1f5b4fba69015d223a0e68deab2a84fe6e718654496964723d43
SHA3-384 hash: dcf82e9f767b67d7077370a0d0a631cc8b8605ad821292a899626c3cc2d33d4fb7c681d8b050a50c2bc324ef2097f0d6
SHA1 hash: 668748caa85f3c4978335489cf071e92418c44d4
MD5 hash: 4c4379b29c784cd9d9edaf4d194b2149
humanhash: ohio-summer-gee-nevada
File name:rfq_purchase_order_catalog_design_no_TZ806_23102023_00000000_pdf.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:485'080 bytes
First seen:2023-10-24 05:35:34 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 84062c623770f0d888e4ca58451aa7ad (10 x GuLoader, 1 x Formbook, 1 x RemcosRAT)
ssdeep 12288:SiFZggYRu7jveWJbrYD1DxQGW8Gbl4+4dUmm/7ALmj52lQ:vFZggYRu7zeMKiB8d907xj5R
Threatray 55 similar samples on MalwareBazaar
TLSH T1D5A423D586ECD2FEE94B4574077B6283DE7A6A7060BC7133D7A6B7027C0228467681F2
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 b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter abuse_ch
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-10-07T01:17:49Z
Valid to:2026-10-06T01:17:49Z
Serial number: 5f9f06932fcbc1ac1bf847768531a0fb161050cb
Thumbprint Algorithm:SHA256
Thumbprint: c4d763c717398a2c7c39738316b5e86301cfc4988d4980dcb880db27d184ff16
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
316
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rfq_purchase_order_catalog_design_no_TZ806_23102023_00000000_pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-10-24 05:48:30 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/10e6c133-6b5a-4efe-a703-912f306f5d0f

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/455862/
Detection(s):
SecuriteInfo.com.Trojan.TR.AD.NsisInject.exewy.23148.4188.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a file
Sending a custom TCP request
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control guloader installer lolbin masquerade overlay packed shell32
Link:
https://www.filescan.io/uploads/653757c74678fc28dfc7c2be/reports/1fc006d1-d2c2-4f19-bb61-86bc05c4db64/overview
Verdict:
Malicious
Labled as:
Win/grayware_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/5aedaa7f3fbb1f5b4fba69015d223a0e68deab2a84fe6e718654496964723d43
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/87d17353-6506-4f6d-aff1-4dade831fb3d
Result
Threat name:
GuLoader, Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad.phis.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1331028
Signature
Antivirus detection for URL or domain
Contains functionality to modify clipboard data
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Writes to foreign memory regions
Yara detected GuLoader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1331028 Sample: rfq_purchase_order_catalog_... Startdate: 24/10/2023 Architecture: WINDOWS Score: 100 34 unif-pid.com 2->34 36 geoplugin.net 2->36 50 Snort IDS alert for network traffic 2->50 52 Multi AV Scanner detection for domain / URL 2->52 54 Antivirus detection for URL or domain 2->54 56 9 other signatures 2->56 8 rfq_purchase_order_catalog_design_no_TZ806_23102023_00000000_pdf.exe 2 38 2->8         started        signatures3 process4 file5 26 C:\Users\user\AppData\...\haustellated.ver, 386 8->26 dropped 28 C:\Users\user\AppData\Local\...\System.dll, PE32 8->28 dropped 58 Writes to foreign memory regions 8->58 60 Maps a DLL or memory area into another process 8->60 12 wab.exe 4 17 8->12         started        signatures6 process7 dnsIp8 38 unif-pid.com 54.37.178.173, 50105, 50106, 80 OVHFR France 12->38 40 45.81.39.5, 2404, 50107, 50108 LVLT-10753US United States 12->40 42 geoplugin.net 178.237.33.50, 50110, 80 ATOM86-ASATOM86NL Netherlands 12->42 30 C:\Users\user\AppData\Local\...\Mogdad5.exe, PE32 12->30 dropped 32 C:\Users\user\AppData\Roaming\logs.dat, data 12->32 dropped 62 Maps a DLL or memory area into another process 12->62 64 Installs a global keyboard hook 12->64 17 wab.exe 1 12->17         started        20 wab.exe 1 12->20         started        22 wab.exe 2 12->22         started        24 wab.exe 12->24         started        file9 signatures10 process11 signatures12 44 Tries to steal Instant Messenger accounts or passwords 17->44 46 Tries to harvest and steal browser information (history, passwords, etc) 17->46 48 Tries to steal Mail credentials (via file / registry access) 20->48
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/5aedaa7f3fbb1f5b4fba69015d223a0e68deab2a84fe6e718654496964723d43
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5aedaa7f3fbb1f5b4fba69015d223a0e68deab2a84fe6e718654496964723d43/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-10-23 22:51:01 UTC
File Type:
PE (Exe)
Extracted files:
13
AV detection:
15 of 23 (65.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=llw2u7z7xmpvwt52neav2ir2bzun5kzkqt7g44mgkrewszdshvbq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
0a5dc64f78625224deb5f4bcc2b740a657a8ddc2314b1f4961bdbb0cfeb3f10a
GuLoader
51123d52ec5e4daaf0d80f52df3256de48df624f69e4ca00b08e0191612f5505
GuLoader
b648a39d90b072f6ddcc51c4385b91c6ccf8f09f07cff7214468efe096315d91
GuLoader
+ 45 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader persistence
Link:
https://tria.ge/reports/231024-galfwaah4x/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
edf12a3040cff0d801a86c02313d6605b41d766807f3dcb261754cf01b4e14b9
MD5 hash:
e227391c7ff576135eac4871e78ebe2d
SHA1 hash:
85d4bdbb79bdc47095ca35ed2141b2e64d029218
Link:
https://www.unpac.me/results/f427555a-cb6a-43a7-8262-f9a29eed1a63/
SH256 hash:
5aedaa7f3fbb1f5b4fba69015d223a0e68deab2a84fe6e718654496964723d43
MD5 hash:
4c4379b29c784cd9d9edaf4d194b2149
SHA1 hash:
668748caa85f3c4978335489cf071e92418c44d4
Link:
https://www.unpac.me/results/f427555a-cb6a-43a7-8262-f9a29eed1a63/
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/5aedaa7f3fbb1f5b4fba69015d223a0e68deab2a84fe6e718654496964723d43

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_Potentially_Signed_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.

Malspam

GuLoader

Executable exe 5aedaa7f3fbb1f5b4fba69015d223a0e68deab2a84fe6e718654496964723d43

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/455862/

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