MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a41b3a0fabe72e62702412b349d8303913929a7101c4e6c643a44e52a7ca8292. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a41b3a0fabe72e62702412b349d8303913929a7101c4e6c643a44e52a7ca8292
SHA3-384 hash: ba3bf3a82d54f001697c794ff42de6103d791d668cf3581fab9135ddbb11514bdd104f87da09554aebf315e002cfb79f
SHA1 hash: 9dda9a90307cd60b11daaf22fe5df066b4bc9d02
MD5 hash: 04c83438f4f42246a9c85eac87937223
humanhash: mike-july-mobile-massachusetts
File name:Factura de pago.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:296'248 bytes
First seen:2022-08-15 06:55:37 UTC
Last seen:2022-08-15 07:34:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 6e7f9a29f2c85394521a08b9f31f6275 (277 x GuLoader, 44 x RemcosRAT, 40 x VIPKeylogger)
ssdeep 6144:R3hqL2V8Q1dO2Tm6d0TreJX2Bis62MryFecHm:R3xj1dVV0o2nSF
TLSH T1045402463B5192A3EE860B3004B9E7271BF4AC25EDEDC99B13D5794E387A342740B67C
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 64dbdbd9e98999dc (4 x GuLoader)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Maallinie Enuretic Flbets
Issuer:Maallinie Enuretic Flbets
Algorithm:sha256WithRSAEncryption
Valid from:2022-08-08T11:03:46Z
Valid to:2025-08-07T11:03:46Z
Serial number: 7cda0a8199714028
Thumbprint Algorithm:SHA256
Thumbprint: c2e59fc1d295ce8a20b6e787eb7cc697419234ce4310feee1d2d8f48302e4b51
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
241
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Factura de pago.exe
Verdict:
Malicious activity
Analysis date:
2022-08-15 07:02:41 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f9b8e449-074b-4711-9403-0137be64dd0a

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/298574/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.61218800.15454.24464.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Searching for the window
Searching for the Windows task manager window
Running batch commands
Creating a process with a hidden window
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/28956/overview
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/62f9ee8e810e2831b74b0268/reports/515f80ba-565c-4de1-b2e9-4fd0b392c427/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/c1075870-9a93-48a8-9174-b93d6026c2e7
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1051336
Signature
Mass process execution to delay analysis
Multi AV Scanner detection for submitted file
Obfuscated command line found
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)
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: 683846 Sample: Factura de pago.exe Startdate: 15/08/2022 Architecture: WINDOWS Score: 100 44 mail.hemegas.es 2->44 46 hemegas.es 2->46 48 3 other IPs or domains 2->48 56 Multi AV Scanner detection for submitted file 2->56 58 Yara detected GuLoader 2->58 60 Yara detected AgentTesla 2->60 62 3 other signatures 2->62 8 Factura de pago.exe 1 34 2->8         started        signatures3 process4 file5 36 C:\Users\user\Sixhynde\...\libbz2-1.dll, PE32+ 8->36 dropped 38 C:\...\System.IO.Compression.ZipFile.dll, PE32+ 8->38 dropped 40 C:\Users\user\...behaviorgraphameVisualPlugin.Helper.dll, PE32+ 8->40 dropped 42 2 other files (none is malicious) 8->42 dropped 64 Obfuscated command line found 8->64 66 Writes to foreign memory regions 8->66 68 Tries to detect Any.run 8->68 12 CasPol.exe 11 8->12         started        16 cmd.exe 8->16         started        18 cmd.exe 8->18         started        20 62 other processes 8->20 signatures6 process7 dnsIp8 50 hemegas.es 37.59.226.102, 49756, 587 OVHFR France 12->50 52 googlehosted.l.googleusercontent.com 142.250.184.193, 443, 49755 GOOGLEUS United States 12->52 54 drive.google.com 142.250.184.206, 443, 49754 GOOGLEUS United States 12->54 70 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->70 72 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->72 74 Tries to steal Mail credentials (via file / registry access) 12->74 76 4 other signatures 12->76 22 conhost.exe 12->22         started        24 Conhost.exe 16->24         started        26 Conhost.exe 18->26         started        28 Conhost.exe 20->28         started        30 Conhost.exe 20->30         started        32 Conhost.exe 20->32         started        34 59 other processes 20->34 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a41b3a0fabe72e62702412b349d8303913929a7101c4e6c643a44e52a7ca8292/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2022-08-08 16:29:43 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uqntud5l44xge4beckzutwbqhejzfgtrahconrsdurhffj6kqkja._file
Verdict:
malicious
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/220815-hqdawaacf7/
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
5e66489393f159aa0fd30b630bb345d03418e9324e7d834b2e4195865a637cfe
MD5 hash:
4c77a65bb121bb7f2910c1fa3cb38337
SHA1 hash:
94531e3c6255125c1a85653174737d275bc35838
Link:
https://www.unpac.me/results/aca3be68-0f33-4c73-8c6a-44243f89eb80/
SH256 hash:
1ece965ac1a7410c56c47532a43dd7e5b4db0263a8dca53f0554f7ff16003a8c
MD5 hash:
df3e949ba7901c3520698d403c7f1f5c
SHA1 hash:
6cd0bcdcd433cea81f90ecc1bf4e92e9a0d8fde2
Link:
https://www.unpac.me/results/aca3be68-0f33-4c73-8c6a-44243f89eb80/
SH256 hash:
a41b3a0fabe72e62702412b349d8303913929a7101c4e6c643a44e52a7ca8292
MD5 hash:
04c83438f4f42246a9c85eac87937223
SHA1 hash:
9dda9a90307cd60b11daaf22fe5df066b4bc9d02
Link:
https://www.unpac.me/results/aca3be68-0f33-4c73-8c6a-44243f89eb80/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/a41b3a0fabe72e62702412b349d8303913929a7101c4e6c643a44e52a7ca8292

File information

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

Malspam

GuLoader

Executable exe a41b3a0fabe72e62702412b349d8303913929a7101c4e6c643a44e52a7ca8292

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/298574/

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