MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f548590defc2ccbe24f628129535444295460ede5f719adb540cf1a67bcae839. 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: 13


Intelligence 13 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f548590defc2ccbe24f628129535444295460ede5f719adb540cf1a67bcae839
SHA3-384 hash: f69fc3aa88050abaafc1a4368fba9135fa15d15b58676b4032befb03a53f6f8b38aab44b2b4fd54f0db93082a11de5e8
SHA1 hash: 98b609fee9e10f88fae9cc9547f6afdb6d03f48c
MD5 hash: c928eaf8b88fd7cb250ba930589aad49
humanhash: queen-foxtrot-juliet-kansas
File name:E-dekont.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:630'368 bytes
First seen:2023-04-03 07:51:40 UTC
Last seen:2023-04-03 11:24:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 56a78d55f3f7af51443e58e0ce2fb5f6 (728 x GuLoader, 451 x Formbook, 295 x Loki)
ssdeep 12288:vgh+G1bSEBF0NlTeHEPPyud/l2I7YKntfRChEa+CeKd8:4h+G1bSEz07TekP5/ldnChEjsC
Threatray 1'345 similar samples on MalwareBazaar
TLSH T1F3D4F10A7D10610ECD654A379C735AE21EB36E3D8DF45A2103FDBE5F88322967AAD143
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 e070cec884e07889 (5 x GuLoader, 4 x Formbook)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-05-24T01:18:04Z
Valid to:2025-05-23T01:18:04Z
Serial number: 0723f86359c68728cbb7ecd659548239bf4fa9f3
Thumbprint Algorithm:SHA256
Thumbprint: 969c97df20ebf66705be7f6ffa9c9eef9ed23d49ac9a440e3eb113643ebd95f7
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
256
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
E-dekont.exe
Verdict:
Malicious activity
Analysis date:
2023-04-03 07:53:21 UTC
Tags:
guloader
Link:
https://app.any.run/tasks/9f8daca3-5261-4daf-b4a7-b75b778992a0

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/379529/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% subdirectories
Creating a file in the %AppData% directory
Delayed reading of the file
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/76229/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
guloader icedid overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/642a85a3c56b2da73aca7ee4/reports/9d74a144-092d-4dfe-b1e2-77a633de0f67/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/f548590defc2ccbe24f628129535444295460ede5f719adb540cf1a67bcae839
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/80e11e3e-d771-4643-a273-a3b6dd53d83b
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1206917
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found potential ransomware demand text
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
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 839832 Sample: E-dekont.exe Startdate: 03/04/2023 Architecture: WINDOWS Score: 100 38 www.zetuinteriors.africa 2->38 40 www.textare.net 2->40 42 26 other IPs or domains 2->42 60 Snort IDS alert for network traffic 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 Antivirus detection for URL or domain 2->64 66 7 other signatures 2->66 11 E-dekont.exe 1 45 2->11         started        signatures3 process4 file5 30 C:\Users\user\AppData\Local\...\System.dll, PE32 11->30 dropped 32 C:\Users\user\AppData\Local\...\BtvStack.exe, PE32+ 11->32 dropped 34 C:\Users\user\AppData\...\gobject-2.0.dll, PE32+ 11->34 dropped 36 C:\Users\user\AppData\Local\...36MDllHost.exe, PE32 11->36 dropped 74 Tries to detect Any.run 11->74 15 E-dekont.exe 6 11->15         started        signatures6 process7 dnsIp8 50 34.138.169.8, 49792, 80 ATGS-MMD-ASUS United States 15->50 52 Modifies the context of a thread in another process (thread injection) 15->52 54 Tries to detect Any.run 15->54 56 Maps a DLL or memory area into another process 15->56 58 2 other signatures 15->58 19 explorer.exe 6 1 15->19 injected signatures9 process10 dnsIp11 44 www.furniture-42269.com 185.53.179.90, 49809, 80 TEAMINTERNET-ASDE Germany 19->44 46 www.laxmi.digital 213.186.33.5, 49800, 80 OVHFR France 19->46 48 14 other IPs or domains 19->48 68 System process connects to network (likely due to code injection or exploit) 19->68 23 systray.exe 19->23         started        signatures12 process13 signatures14 70 Modifies the context of a thread in another process (thread injection) 23->70 72 Maps a DLL or memory area into another process 23->72 26 cmd.exe 1 23->26         started        process15 process16 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f548590defc2ccbe24f628129535444295460ede5f719adb540cf1a67bcae839/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-04-03 07:52:09 UTC
File Type:
PE (Exe)
Extracted files:
64
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6vefsdppylgl4jhwfajjknkeikkumdw6l5yzvw2ubty2m66k5a4q._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
037d18a0489c63d5d9ba87f8ea9652c511df0787eb9d8fe361cfab7f93e03582
GuLoader
0ae741990942bc5b9a51a72dc1cc9f2197b8fe140b76eee9170c3260c00e8656
GuLoader
13820d60b2e8ac752be35f8ac5f49aa70111dfd2a0fed40b58b5232ba93f0c23
GuLoader
23473106e8e2e1add3756ee0e4101095710b9663791f57e026e08f99218077ff
GuLoader
4a85949b7ffe19e22e4191b55b225cb3ac8b59246785144f585006b94e9ba574
GuLoader
7eb67be31871fe9316bbb2ba993b6dfd13cb9e7e04a2e1091b934746399e5293
GuLoader
81ce31f6f3cd9a6a6037c411a1485bee35eaa93965fc6ccc2bd857c991fcad90
GuLoader
dd7c962afea2752944885fdd3551a0a50fc3a58f676c1466f5fb71eda72d5a24
GuLoader
e7f3ea9e207ee0ee8465346b51790d3f781e5b47fdc77f6ce17c2d88292b42d7
GuLoader
f0a5c2339933c5547d78a0e2015cff25fadc7fe2d56f8822202f874c1a8b979e
GuLoader
+ 1'335 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:guloader campaign:mi94 downloader rat spyware stealer trojan
Link:
https://tria.ge/reports/230403-jqd3vade34/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Deletes itself
Loads dropped DLL
Formbook payload
Formbook
Guloader,Cloudeye
Unpacked files
SH256 hash:
1b30f3073fece96ecc61333d549ef1b746bacf798f49ddd03bcf27e7689fd39b
MD5 hash:
5876ac97bb98d23ce05a39517a1c89a1
SHA1 hash:
4b98233887f0f346fac3b4bd605762d3f78e55f0
Link:
https://www.unpac.me/results/f4f139fd-d090-4c34-a51e-528e76ad01b0/
SH256 hash:
f548590defc2ccbe24f628129535444295460ede5f719adb540cf1a67bcae839
MD5 hash:
c928eaf8b88fd7cb250ba930589aad49
SHA1 hash:
98b609fee9e10f88fae9cc9547f6afdb6d03f48c
Link:
https://www.unpac.me/results/f4f139fd-d090-4c34-a51e-528e76ad01b0/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f548590defc2/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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Suspicious_Macro_Presence
Create hunting rule
Author:Mehmet Ali Kerimoglu (CYB3RMX)
Description:This rule detects common malicious/suspicious implementations.

File information

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

Malspam

GuLoader

Executable exe f548590defc2ccbe24f628129535444295460ede5f719adb540cf1a67bcae839

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/379529/

Comments