MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4be39fed46206303c4a25cac7a411aab459796ad5d1c640f465d225af618f174. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4be39fed46206303c4a25cac7a411aab459796ad5d1c640f465d225af618f174
SHA3-384 hash: 393beed18ac56ec8b553489127cd7707d3ddbde0ecd2d5ecee5ac7673afdf72b391df1b3ca11491448f65ec69ada56b7
SHA1 hash: af8b16f7d07d979e517b2f303be3f24a8122d15b
MD5 hash: f6427112ea99494544e03172afb1a267
humanhash: tennis-burger-seventeen-arizona
File name:file
Download: download sample
Signature GuLoader
Create hunting rule
File size:315'240 bytes
First seen:2023-06-06 13:08:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash e9c0657252137ac61c1eeeba4c021000 (53 x GuLoader, 26 x RedLineStealer, 17 x AgentTesla)
ssdeep 6144:P6dIKbOkt5SnT/fb8BWOCig4p457SF6Mpn+i5l:raOlEWt4p4Vu5l
Threatray 894 similar samples on MalwareBazaar
TLSH T15F64DF5126A0BD43CC5DAEF6781F99DDAD331E700ABC523AEFD07A252B31B4EA306145
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 c0c4f47864647864 (4 x GuLoader, 3 x Loki, 3 x AgentTesla)
Reporter jstrosch
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-05-02T00:05:44Z
Valid to:2026-05-01T00:05:44Z
Serial number: 52c55ea9ebc06664254b642315161f2d362007f0
Thumbprint Algorithm:SHA256
Thumbprint: bba381d74cab9f3e98faa40f65c0f4b8aecee1b2897e0b67a38776471271da48
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
303
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-06-06 13:11:35 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c0ff5653-6ed2-4172-9ff1-a781abf67665

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/396136/
Detection(s):
SecuriteInfo.com.NSIS.DropperX-gen.6769.338.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/89625/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer lolbin overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/647f2ff0f5bba977b08902f0/reports/ffc63772-8ea5-45c7-ae16-ac31af72e50e/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/4be39fed46206303c4a25cac7a411aab459796ad5d1c640f465d225af618f174
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/537bd256-6607-473b-a26a-ddeb65414699
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1249562
Signature
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
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)
Multi AV Scanner detection for domain / URL
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
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 steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 882582 Sample: file.exe Startdate: 06/06/2023 Architecture: WINDOWS Score: 100 34 www.zservers.xyz 2->34 36 yoursocialpost.com 2->36 38 17 other IPs or domains 2->38 56 Snort IDS alert for network traffic 2->56 58 Multi AV Scanner detection for domain / URL 2->58 60 Malicious sample detected (through community Yara rule) 2->60 64 5 other signatures 2->64 11 file.exe 25 2->11         started        signatures3 62 Performs DNS queries to domains with low reputation 34->62 process4 file5 32 C:\Users\user\AppData\Local\...\System.dll, PE32 11->32 dropped 76 Tries to detect Any.run 11->76 15 file.exe 6 11->15         started        signatures6 process7 dnsIp8 46 107.172.148.208, 50117, 80 AS-COLOCROSSINGUS United States 15->46 48 Modifies the context of a thread in another process (thread injection) 15->48 50 Tries to detect Any.run 15->50 52 Maps a DLL or memory area into another process 15->52 54 2 other signatures 15->54 19 RAVCpl64.exe 15->19 injected signatures9 process10 process11 21 explorer.exe 13 19->21         started        signatures12 66 Tries to steal Mail credentials (via file / registry access) 21->66 68 Tries to harvest and steal browser information (history, passwords, etc) 21->68 70 Writes to foreign memory regions 21->70 72 3 other signatures 21->72 24 explorer.exe 3 1 21->24 injected 28 firefox.exe 21->28         started        process13 dnsIp14 40 yoursocialpost.com 192.185.39.31, 50149, 50150, 50151 UNIFIEDLAYER-AS-1US United States 24->40 42 www.zservers.xyz 103.42.108.46, 50154, 50155, 50156 SYNERGYWHOLESALE-APSYNERGYWHOLESALEPTYLTDAU Australia 24->42 44 10 other IPs or domains 24->44 74 System process connects to network (likely due to code injection or exploit) 24->74 30 WerFault.exe 4 28->30         started        signatures15 process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4be39fed46206303c4a25cac7a411aab459796ad5d1c640f465d225af618f174/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Suspicious
First seen:
2023-06-06 13:09:06 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jprz73kgebrqhrfclswhuqi2vnczpfvnluogid2glurfv5qy6f2a._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
081527de30dc241c82bb300d57a72a24a296db7eb7f8878baf40d634ec361549
GuLoader
1af5390c5886b3834bdc71c325178365018efb062c2922227585d14a1ae1703a
GuLoader
40af7ea5c438a5e5d39e726925d6ce11eadb0438f7dcaa50e753e7bb393f6775
GuLoader
95086b275ae58d917c7f5d10b0d74ed4a1997c2b4d6bb3889c01075fe63b7800
GuLoader
963d20e3915898e3af40bac9f86fe55f44f4a70c31e97dd569d526797a40f419
GuLoader
9beccd0237c35c26218afd582b1c76606f1a9d0c9de1bf75cc555518ffd6d420
GuLoader
a6e19abfe7b2644d3853d4ecffe567b80b9bb1fede1f53023beacec13fb2ac4c
GuLoader
dbb615f3effa4483d620bf911040f7fcf05b5c9b6f1b588e17d19c23e089e5c5
GuLoader
e3afde7d787a34ec4480bc68be8f7b49ff2f9684bb3ac43cbeeb0b24c2ebdaca
GuLoader
f4afad610ada8c98e0e1bf3907d6ae1b3ffe56d2060df106d9336aac195a5e31
GuLoader
+ 884 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/230606-qdr79sdg56/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Checks computer location settings
Loads dropped DLL
Unpacked files
SH256 hash:
ac9dfe3b35ea4b8932536ed7406c29a432976b685cc5322f94ef93df920fede7
MD5 hash:
0063d48afe5a0cdc02833145667b6641
SHA1 hash:
e7eb614805d183ecb1127c62decb1a6be1b4f7a8
Link:
https://www.unpac.me/results/5dddde5c-f92f-4932-835e-ebf277c7530c/
Parent samples :
5312214b15330113f6eab71565e1e3c7d1ee3b59daa6703c271aaf3b192e6809
02fca6ef5d9d8b1eb29f7ac8ea0573b504ea7f06c215e091791653b40fe1329a
cc53accc69b32c2507210ea70d1d56aa84dbe354a7f79577df180179ea797427
045a7318a9e2e550208c0c7e9fc805068df19fa73823ac3acaa049a46c4045ee
f2a883a0e4b01c72b0f063df3be5a0102e5c8fbaedc39c8d35c632b200599283
dffefbde27442b9095388b1871ffdc101c430b9a814138be4f962328a5b73fde
e0fb60da371912c158861c9660632d58e45cfcff12351cc9e03f497f319eb5de
904f69a4bed3844273cce1676e8920794815af4c1527e560bbc1bc44b5b8457a
SH256 hash:
4be39fed46206303c4a25cac7a411aab459796ad5d1c640f465d225af618f174
MD5 hash:
f6427112ea99494544e03172afb1a267
SHA1 hash:
af8b16f7d07d979e517b2f303be3f24a8122d15b
Link:
https://www.unpac.me/results/5dddde5c-f92f-4932-835e-ebf277c7530c/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4be39fed4620/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/4be39fed46206303c4a25cac7a411aab459796ad5d1c640f465d225af618f174

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: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.

Web download

GuLoader

Executable exe 4be39fed46206303c4a25cac7a411aab459796ad5d1c640f465d225af618f174

(this sample)

  
Delivery method
Distributed via web download
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/396136/

Comments