MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e507395aaccab20998986f9faee7d557014aa7fc9adf3a856d54b52962797a4f. 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 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e507395aaccab20998986f9faee7d557014aa7fc9adf3a856d54b52962797a4f
SHA3-384 hash: c5d69eba6bad376f39e63aabcc0c947f81358af15b1398f9321b869fb85eca1aaa69c67f71abea4da954aa62bbdc9b6f
SHA1 hash: 32d4424e9b7bdd3b92446c65d7a57f262eb9d52c
MD5 hash: 71bc10004d1b0408375de806d4530983
humanhash: helium-eight-vegan-minnesota
File name:71bc10004d1b0408375de806d4530983
Download: download sample
Signature GuLoader
Create hunting rule
File size:430'320 bytes
First seen:2023-07-28 06:25:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (300 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 6144:6Be337n8xkABZYQkh6IdqIk4FxcXJ9KCiexJEII9otc3iGFGC8:37LABZYQkh6IdW6wKCpxJm9o+yGFl8
Threatray 876 similar samples on MalwareBazaar
TLSH T1EB94D093ED9042A7D4080839D697BB2425F68C7DAB5ACF1313D830267FB6192257F36B
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 c2aab2c2c0f0f0f0 (5 x GuLoader, 1 x RemcosRAT)
Reporter zbetcheckin
Tags:32 exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-07-11T10:54:02Z
Valid to:2026-07-10T10:54:02Z
Serial number: 077585fc61de4315d2d464faac32cf5d9c5fd673
Thumbprint Algorithm:SHA256
Thumbprint: 266c538b6a311a0606223abffe662b3d181ff11950d86abfe125be5611a04744
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
275
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
71bc10004d1b0408375de806d4530983
Verdict:
Suspicious activity
Analysis date:
2023-07-28 06:28:12 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/99421c22-de6e-4bad-b0d0-80c91f1556f7

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/435811/
Detection(s):
SecuriteInfo.com.Mal.Generic-S.31020.16397.20236.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/64c35f472a568ab215b9092e/reports/8f74d3de-02b2-47a7-b63a-571955f540b8/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/e507395aaccab20998986f9faee7d557014aa7fc9adf3a856d54b52962797a4f
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/84ca8ae9-c025-42ef-8f8b-6dae86d8af29
Result
Threat name:
GuLoader, AgentTesla, SmokeLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1281611
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
Antivirus detection for URL or domain
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Checks if the current machine is a virtual machine (disk enumeration)
Creates a thread in another existing process (thread injection)
Deletes itself after installation
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Installs a global keyboard hook
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
May check the online IP address of the machine
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
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 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 Costura Assembly Loader
Yara detected GuLoader
Yara detected SmokeLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1281611 Sample: qu7WsxZZHH.exe Startdate: 28/07/2023 Architecture: WINDOWS Score: 100 68 cletonmy.com 2->68 70 alpatrik.com 2->70 72 3 other IPs or domains 2->72 100 Snort IDS alert for network traffic 2->100 102 Multi AV Scanner detection for domain / URL 2->102 104 Found malware configuration 2->104 106 12 other signatures 2->106 10 qu7WsxZZHH.exe 31 2->10         started        14 vbtdbvt 25 2->14         started        16 vbtdbvt 2->16         started        signatures3 process4 file5 54 C:\Users\user\AppData\Local\...\System.dll, PE32 10->54 dropped 116 Tries to detect Any.run 10->116 18 qu7WsxZZHH.exe 6 10->18         started        56 C:\Users\user\AppData\Local\...\System.dll, PE32 14->56 dropped 22 vbtdbvt 14->22         started        58 C:\Users\user\AppData\Local\...\System.dll, PE32 16->58 dropped 24 vbtdbvt 16->24         started        signatures6 process7 dnsIp8 74 198.46.177.160, 50353, 50367, 50374 AS-COLOCROSSINGUS United States 18->74 108 Tries to detect Any.run 18->108 110 Maps a DLL or memory area into another process 18->110 112 Checks if the current machine is a virtual machine (disk enumeration) 18->112 26 explorer.exe 10 7 18->26 injected 114 Creates a thread in another existing process (thread injection) 22->114 signatures9 process10 dnsIp11 78 alpatrik.com 141.8.193.5, 50358, 50359, 50360 SPRINTHOSTRU Russian Federation 26->78 80 cletonmy.com 172.105.103.207, 50357, 80 LINODE-APLinodeLLCUS United States 26->80 62 C:\Users\user\AppData\Roaming\vbtdbvt, PE32 26->62 dropped 64 C:\Users\user\AppData\Local\Temp\208A.exe, PE32 26->64 dropped 66 C:\Users\user\...\vbtdbvt:Zone.Identifier, ASCII 26->66 dropped 128 System process connects to network (likely due to code injection or exploit) 26->128 130 Benign windows process drops PE files 26->130 132 Injects code into the Windows Explorer (explorer.exe) 26->132 134 3 other signatures 26->134 31 208A.exe 15 3 26->31         started        35 WinHlp.exe 26->35         started        37 WinHlp.exe 26->37         started        39 6 other processes 26->39 file12 signatures13 process14 dnsIp15 82 files.catbox.moe 108.181.20.35, 443, 50362, 50366 ASN852CA Canada 31->82 84 Antivirus detection for dropped file 31->84 86 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 31->86 88 Machine Learning detection for dropped file 31->88 41 208A.exe 31->41         started        46 208A.exe 31->46         started        90 Injects a PE file into a foreign processes 35->90 48 WinHlp.exe 35->48         started        50 WinHlp.exe 37->50         started        92 System process connects to network (likely due to code injection or exploit) 39->92 94 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 39->94 96 Tries to steal Mail credentials (via file / registry access) 39->96 98 Tries to harvest and steal browser information (history, passwords, etc) 39->98 52 WerFault.exe 39->52         started        signatures16 process17 dnsIp18 76 api4.ipify.org 64.185.227.156, 443, 50365, 50369 WEBNXUS United States 41->76 60 C:\Users\user\AppData\Roaming\...\WinHlp.exe, PE32 41->60 dropped 118 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 41->118 120 Tries to steal Mail credentials (via file / registry access) 41->120 122 Hides that the sample has been downloaded from the Internet (zone.identifier) 41->122 124 Tries to harvest and steal browser information (history, passwords, etc) 50->124 126 Installs a global keyboard hook 50->126 file19 signatures20
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e507395aaccab20998986f9faee7d557014aa7fc9adf3a856d54b52962797a4f/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Suspicious
First seen:
2023-07-28 04:09:40 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
10 of 24 (41.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4udtswvmzkzatgeyn6p25z6vk4auvj74tlptvblnks2ssytzpjhq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
0aca8e757450257b435be941b91b79bedc38d9b25be3a60b10a52aec61a158a8
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2a3b878db3d93241bec1fa344d59275cec331fa159ea90c26d8430f4f4a5b9e5
GuLoader
47e8a43a5dfcefe4d6850764bb413ffeab6724be3a37620853b686c9fb23db34
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629156764548d3bdbc062de11f6ad819bb0d7d166aac339b04674861df522206
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723ff97e6559f6558c288ca693898592a21aab28c003883ca13b81667d7e3aef
GuLoader
7d6e9247de0527fa4c0939c4f6e6726a35cb5f39492a7aeab5614ac1ab29b294
GuLoader
86cdb06b975dfb24d11bf83bbe33b39b8eb49c1bb514c2d508c05ef3d9b3be01
GuLoader
b09ed41c3a0e1a98d0035de279a32fa7e08e3eba69190b2cbf5f977301e58100
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b5490460c53d27ef419898a98959bec49deb3ac3c3a8a23d63ce7dabe00af32e
GuLoader
c627b8bb6c4ea0cf03aa2d209d0ecc53ff9784283328dabd44c1675aef0939c2
GuLoader
+ 866 additional samples on MalwareBazaar
Result
Malware family:
smokeloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:smokeloader backdoor downloader trojan
Link:
https://tria.ge/reports/230728-g6n7msbg98/
Behaviour
Checks SCSI registry key(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Deletes itself
Loads dropped DLL
Guloader,Cloudeye
SmokeLoader
Malware Config
C2 Extraction:
http://cletonmy.com/
http://alpatrik.com/
Unpacked files
SH256 hash:
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 hash:
3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 hash:
fe582246792774c2c9dd15639ffa0aca90d6fd0b
Link:
https://www.unpac.me/results/518c24cd-111d-427a-921d-0bd29a890e11/
SH256 hash:
e507395aaccab20998986f9faee7d557014aa7fc9adf3a856d54b52962797a4f
MD5 hash:
71bc10004d1b0408375de806d4530983
SHA1 hash:
32d4424e9b7bdd3b92446c65d7a57f262eb9d52c
Link:
https://www.unpac.me/results/518c24cd-111d-427a-921d-0bd29a890e11/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e507395aacca/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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 e507395aaccab20998986f9faee7d557014aa7fc9adf3a856d54b52962797a4f

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/435811/
  
URLhaus
https://urlhaus.abuse.ch/url/2691453/

Comments


Avatar
zbet commented on 2023-07-28 06:25:04 UTC

url : hxxp://198.46.177.160/050/chromium.exe