MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6518dc835d22e7520ce00460a18304bce53a4dee89b4236dcacf3b4f071868d1. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6518dc835d22e7520ce00460a18304bce53a4dee89b4236dcacf3b4f071868d1
SHA3-384 hash: ff510263f5e133e8935a7a586fff4e8844c00e836b8bf64a6195b875aaa451b70950a91aefa6acebf11b9b59aeb49d1d
SHA1 hash: 2afa190e69d1d39cdff308a1e2dbe8e1e6aa9d65
MD5 hash: b83b9107362bd9faf2dd74668ccc1780
humanhash: uranus-batman-avocado-sweet
File name:FNX Proforma Incoice No; INV 20231131003197231. 20..12.2022. SOA ref 202212234351972.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:438'127 bytes
First seen:2023-02-21 07:08:00 UTC
Last seen:2023-02-21 09:17:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 5f0c714c36e6cc016b3a1f4bc86559e4 (199 x GuLoader, 14 x Formbook, 4 x AgentTesla)
ssdeep 12288:Ss6i1DdZ7CuJ41easH1T5dQEfIvmz43Ub0f:Ss6iBv7CA41PsGQEKp0f
Threatray 4'187 similar samples on MalwareBazaar
TLSH T1D7942347A790CAAFED6A1273F83151F99546CC74D06A874B67F1BE7038F62824F2C252
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 c4c4ccccccc4dac4 (4 x GuLoader)
Reporter lowmal3
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
3
# of downloads :
222
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
FNX Proforma Incoice No; INV 20231131003197231. 20..12.2022. SOA ref 202212234351972.exe
Verdict:
Malicious activity
Analysis date:
2023-02-21 07:10:06 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/57b20eae-b997-4c6e-913b-0d6a516f42fe

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/368557/
Detection(s):
SecuriteInfo.com.Gen.Variant.Nemesis.18425.21989.24603.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Creating a window
Creating a file
Searching for the window
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/71910/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer guloader nemesis overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63f46dd542bf85850e3e74be/reports/dcdb3e22-7d45-4890-a5e0-b1a0fdf603f8/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/6518dc835d22e7520ce00460a18304bce53a4dee89b4236dcacf3b4f071868d1
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/a6d690ef-8704-4785-b496-3a2f03ddf3a4
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1179569
Signature
Installs a global keyboard hook
May check the online IP address of the machine
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)
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 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
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6518dc835d22e7520ce00460a18304bce53a4dee89b4236dcacf3b4f071868d1/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-02-21 02:06:33 UTC
File Type:
PE (Exe)
Extracted files:
17
AV detection:
14 of 25 (56.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mumnza25eltvedhaarqkdayextstutporg2cg3okz45u6byyndiq._file
Verdict:
unknown
Similar samples:
0faf5543b3fe80d01ba68547d5bf49813c8c93f9f942fdd46ecb684e47a93597
GuLoader
121dae49dacf1290b5ef4de577a01161b523d9edf8564fa765e7c00ac6c3b862
GuLoader
1a340a1a7fac27ac3b7457ae56e0aa92a493c74a4fb4507d27245293783e8edd
GuLoader
43f1463dd71cfcc3376f99056faf2c0ca6d35bacdd1a68db39b55c7179caf733
GuLoader
8de44c6d5f3c81b21ca61235a70d87c705c3b47127c9815628df1e1b1344a32b
GuLoader
98f3769bc2318575d1a8d3964c11a6d14b4be9aa380395f9dc3e368cbb465056
GuLoader
bb65c5154557fcb66e7df91b85f0202a1801643ae9de6b2b29c2d1666e086c27
GuLoader
c1d4497629dff8c33f099d57352369ed56a081ce083a94d76b294d01b3e7479d
GuLoader
ccb00726db19c3c19f4d2747fdc43b1a1bb6ed8d902ed9c45caf5fae7ad0de55
GuLoader
e2dcc59293b027cc625930d90e7542867ee8ec34c2a25a01ca8ccbf64ba50e66
GuLoader
+ 4'177 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader discovery downloader
Link:
https://tria.ge/reports/230221-hx8elafg8w/
Behaviour
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in System32 directory
Checks installed software on the system
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
9029c2a2569a0c1b668d3ac118539f38f23fdc2e63dc6ef3ba2db9aa17400115
MD5 hash:
2286621a5b3ae4808778eea46e5201f9
SHA1 hash:
f6b0c2724eb9d6d7d7cb82ca30672cbf03cd3e0a
Link:
https://www.unpac.me/results/5b017bff-4b74-4d4f-9f6c-45ccaebd780f/
SH256 hash:
6518dc835d22e7520ce00460a18304bce53a4dee89b4236dcacf3b4f071868d1
MD5 hash:
b83b9107362bd9faf2dd74668ccc1780
SHA1 hash:
2afa190e69d1d39cdff308a1e2dbe8e1e6aa9d65
Link:
https://www.unpac.me/results/5b017bff-4b74-4d4f-9f6c-45ccaebd780f/
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/6518dc835d22e7520ce00460a18304bce53a4dee89b4236dcacf3b4f071868d1

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

Malspam

GuLoader

rar 91575ca8cc53d6615bfde566d5d19fd572ad37892faaa55ee2c659ae9ac6bc81

GuLoader

Executable exe 6518dc835d22e7520ce00460a18304bce53a4dee89b4236dcacf3b4f071868d1

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/368557/
  
Dropped by
SHA256 91575ca8cc53d6615bfde566d5d19fd572ad37892faaa55ee2c659ae9ac6bc81
  
Dropped by
MD5 dde875f40a8d461f4b98281fa085f7a5

Comments