MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e557080c06df7b463812e0d50369bd02015d83b1e41d704d8dfa6f9d2d888554. 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: 9


Intelligence 9 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e557080c06df7b463812e0d50369bd02015d83b1e41d704d8dfa6f9d2d888554
SHA3-384 hash: 2105251dd73d0ce04f365d799fff8ae6017f5fa5a57fc5b7aafd08dc0cd3a14cbe2c7445ac8381111c2e156abe8c3ca0
SHA1 hash: 67b25813967c9cc99828a753c0397109bd934cdb
MD5 hash: c2f70cb9d5b56045bc862800f95cd4c6
humanhash: gee-skylark-oxygen-washington
File name:vbc.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:683'167 bytes
First seen:2022-06-16 08:11:46 UTC
Last seen:2022-06-16 08:49:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 56a78d55f3f7af51443e58e0ce2fb5f6 (728 x GuLoader, 451 x Formbook, 295 x Loki)
ssdeep 12288:tbC4Nh7CmRQt0MrJifdXWv6pm/ERHow338VzROaqYAA/gBmj3ZlVTO0voW8:tbCSCmR+hdifdXWv8m/8Hoy38bOaqJAk
TLSH T13FE41243BB648E23E5B28A70B42697692370EE152928443737743D2BFC733919F4A7D6
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b4d6beeedbc4f0c0 (6 x GuLoader)
Reporter pr0xylife
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
2
# of downloads :
266
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/280625/
Detection(s):
SecuriteInfo.com.W32.AIDetect.malware2.21797.13961.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Сreating synchronization primitives
Creating a file
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/21596/overview
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/62aae5d6c07f2e38a14d0526/reports/c7982f98-582b-4c46-b55a-a8e39cab0ac2/overview
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/faa2fea7-0705-4570-8314-12fb6031a210
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1014365
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Drops PE files with benign system names
Hides that the sample has been downloaded from the Internet (zone.identifier)
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Snort IDS alert for network traffic
Tries to detect Any.run
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)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 646857 Sample: vbc.exe Startdate: 16/06/2022 Architecture: WINDOWS Score: 100 39 tycautomotriz.cl 2->39 41 mail.tycautomotriz.cl 2->41 47 Snort IDS alert for network traffic 2->47 49 Antivirus detection for URL or domain 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 4 other signatures 2->53 8 vbc.exe 6 26 2->8         started        12 svchost.exe 2 2->12         started        14 svchost.exe 1 2->14         started        16 3 other processes 2->16 signatures3 process4 file5 31 C:\Users\user\AppData\Local\Temp\wabmig.exe, PE32+ 8->31 dropped 33 C:\Users\user\AppData\Local\...\System.dll, PE32 8->33 dropped 35 C:\Users\user\AppData\Local\...\libjabber.dll, PE32 8->35 dropped 37 2 other files (none is malicious) 8->37 dropped 63 Writes to foreign memory regions 8->63 65 Tries to detect Any.run 8->65 18 CasPol.exe 2 13 8->18         started        23 conhost.exe 12->23         started        25 conhost.exe 14->25         started        signatures6 process7 dnsIp8 43 185.222.57.197, 49750, 80 ROOTLAYERNETNL Netherlands 18->43 45 tycautomotriz.cl 131.72.236.163, 49751, 587 GONZALEZULLOAJUANCARLOSCL Chile 18->45 29 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32 18->29 dropped 55 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->55 57 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->57 59 Tries to steal Mail credentials (via file / registry access) 18->59 61 6 other signatures 18->61 27 conhost.exe 18->27         started        file9 signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e557080c06df7b463812e0d50369bd02015d83b1e41d704d8dfa6f9d2d888554/
Threat name:
Win32.Downloader.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2022-06-16 08:12:15 UTC
File Type:
PE (Exe)
Extracted files:
39
AV detection:
13 of 26 (50.00%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4vlqqdag355umoas4dkqg2n5aiav3a5r4qoxatmn7jxz2lmiqvka._file
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/220616-j3vlcschg7/
Behaviour
Modifies registry class
Enumerates physical storage devices
Loads dropped DLL
Uses the VBS compiler for execution
Guloader,Cloudeye
Unpacked files
SH256 hash:
8c6bc367fce2febc3654ad88936569da4bf3ff92c370ca1a09831f1a7adf83d5
MD5 hash:
1926b855aebead686363a9ed91f5adfb
SHA1 hash:
ad51413afa132e7bf6a0d37df633abdbe1f4e391
Link:
https://www.unpac.me/results/87546c47-1098-42ce-b062-ae3409bf30ac/
SH256 hash:
e557080c06df7b463812e0d50369bd02015d83b1e41d704d8dfa6f9d2d888554
MD5 hash:
c2f70cb9d5b56045bc862800f95cd4c6
SHA1 hash:
67b25813967c9cc99828a753c0397109bd934cdb
Link:
https://www.unpac.me/results/87546c47-1098-42ce-b062-ae3409bf30ac/
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/e557080c06df7b463812e0d50369bd02015d83b1e41d704d8dfa6f9d2d888554

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:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.

File information

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

Web download

GuLoader

Executable exe e557080c06df7b463812e0d50369bd02015d83b1e41d704d8dfa6f9d2d888554

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/280625/
  
URLhaus
https://urlhaus.abuse.ch/url/2240481/
  
Delivery method
Distributed via web download

Comments