MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4e78f6957f4c8c0f56a9b49e139342b1df7b1dc05518d96e776aa687a80f8c58. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4e78f6957f4c8c0f56a9b49e139342b1df7b1dc05518d96e776aa687a80f8c58
SHA3-384 hash: eddd02c8ee458faa6785b4cc979872167f319ac688fe559ba80039ff3cfc3f9a4d62577c7f03474aba4d8af7e0b3a7af
SHA1 hash: 40161158f7cab76c57b4d95798c74ebc7d612cfe
MD5 hash: e542cf9ce8a67a5b681cc9b0004e0b10
humanhash: uncle-oranges-march-freddie
File name:rJUSTIFICANTEDEPAGO.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:433'352 bytes
First seen:2023-03-20 09:46:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (533 x GuLoader, 110 x RemcosRAT, 80 x EpsilonStealer)
ssdeep 6144:c6bAcJvkzKmPPzS58G93IuZjZz5VWY+LWWwseVp4ZLlbXrvAhM8LjbL7rrraAiGl:z7ubCHICV0LfwqZLlXTqMYvi7
Threatray 435 similar samples on MalwareBazaar
TLSH T1CA94F1227F97E857E4266D78608AEE19AEB0DF249205D317F37139EDE9B53016C2B103
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 2000f8f8e8e8f09e (3 x SnakeKeylogger, 2 x GuLoader)
Reporter FXOLabs
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-12-21T05:52:29Z
Valid to:2025-12-20T05:52:29Z
Serial number: 53bb1a3e0600b528584097460509366c59c5c7cb
Thumbprint Algorithm:SHA256
Thumbprint: 29e893bebbb82ab1f213286ef68814b75d778bab740b54b6457c756488be3856
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
231
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rJUSTIFICANTEDEPAGO.exe
Verdict:
Malicious activity
Analysis date:
2023-03-20 09:46:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d9a54f4a-30c9-4d22-8b0e-b58acb31d586

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/375834/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Delayed reading of the file
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/74201/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
guloader icedid overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/64182b97da1bbe29caf9243f/reports/a65667c4-eea9-48bd-b480-411ca90f6a59/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/4e78f6957f4c8c0f56a9b49e139342b1df7b1dc05518d96e776aa687a80f8c58
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/a04908ce-c0ce-473e-b943-dc3ef72e6c20
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1197499
Signature
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 830400 Sample: rJUSTIFICANTEDEPAGO.exe Startdate: 20/03/2023 Architecture: WINDOWS Score: 96 26 googlehosted.l.googleusercontent.com 2->26 28 drive.google.com 2->28 30 doc-0s-98-docs.googleusercontent.com 2->30 36 Multi AV Scanner detection for submitted file 2->36 38 Yara detected GuLoader 2->38 40 Yara detected AgentTesla 2->40 42 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 2->42 8 rJUSTIFICANTEDEPAGO.exe 5 52 2->8         started        signatures3 process4 file5 18 C:\Users\user\AppData\Local\...\System.dll, PE32 8->18 dropped 20 C:\Users\user\AppData\Local\...\AdvSplash.dll, PE32 8->20 dropped 22 C:\...\System.Reflection.TypeExtensions.dll, PE32+ 8->22 dropped 24 C:\Users\...\System.Reflection.Primitives.dll, PE32 8->24 dropped 44 Writes to foreign memory regions 8->44 46 Tries to detect Any.run 8->46 12 CasPol.exe 11 8->12         started        signatures6 process7 dnsIp8 32 googlehosted.l.googleusercontent.com 142.250.186.33, 443, 49817 GOOGLEUS United States 12->32 34 drive.google.com 172.217.16.206, 443, 49816 GOOGLEUS United States 12->34 48 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->48 50 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->50 52 Tries to steal Mail credentials (via file / registry access) 12->52 54 3 other signatures 12->54 16 conhost.exe 12->16         started        signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4e78f6957f4c8c0f56a9b49e139342b1df7b1dc05518d96e776aa687a80f8c58/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-03-20 00:12:59 UTC
File Type:
PE (Exe)
Extracted files:
16
AV detection:
15 of 37 (40.54%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jz4pnfl7jsga6vvjwspbhe2cwhpxwhoakumns3txnktipkaprrma._file
Verdict:
unknown
Similar samples:
0a80ba418f561098477e18cc42ddfc31796b2be3166ff6c99967b98388fe4826
GuLoader
1d3e8941eb686b154fca77b2c80b84a19fdf21ebd298dc55d4519310ed011add
GuLoader
57db1a9611191d01fbe260f052e87a6fb0cf7dbb1644079727627252ee3e109a
GuLoader
6730e52c8075c7e044c2bbaf9f7ad8c0f7f8d03fb23adbd2331adc8b591caec7
GuLoader
78fc852976d4f8e68360f4bd282b78abb21f7aa02b52cf885203b43d0838c5ef
GuLoader
7f1daec3a9d2f1bc2a93c66e21256929e0e4a0a5294f828508696386ec27ff4f
GuLoader
878d710875b07ec61bef0b198ba67bf81ad0730a3a483d5762cd18e13fb4b525
GuLoader
dbb02fdfea2855cb95d3a6a2668fd5392b9d997200277d98fb758db781880523
GuLoader
f93da7562182b8456d6c88c58d90c745004aaef0979a2a98a06341b219bfe03e
GuLoader
fe00f0b94120e6994117bf92c39940b5a499821e3684163cae07a8fb0ea1c5f1
GuLoader
+ 425 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/230320-lr7gwscg86/
Behaviour
Enumerates physical storage devices
Drops file in Program Files directory
Checks installed software on the system
Loads dropped DLL
Unpacked files
SH256 hash:
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37
MD5 hash:
8b3830b9dbf87f84ddd3b26645fed3a0
SHA1 hash:
223bef1f19e644a610a0877d01eadc9e28299509
Link:
https://www.unpac.me/results/37aa8871-17f2-4793-bd46-19b0348839f2/
SH256 hash:
4e78f6957f4c8c0f56a9b49e139342b1df7b1dc05518d96e776aa687a80f8c58
MD5 hash:
e542cf9ce8a67a5b681cc9b0004e0b10
SHA1 hash:
40161158f7cab76c57b4d95798c74ebc7d612cfe
Link:
https://www.unpac.me/results/37aa8871-17f2-4793-bd46-19b0348839f2/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4e78f6957f4c/report/overview.html
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/4e78f6957f4c8c0f56a9b49e139342b1df7b1dc05518d96e776aa687a80f8c58

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

File information

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

Malspam

GuLoader

Executable exe 4e78f6957f4c8c0f56a9b49e139342b1df7b1dc05518d96e776aa687a80f8c58

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/375834/

Comments