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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 643a505fefdbf1f0fa9915550a75b2b739aba1683858f92f332c9585c838690d. 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: 16


Intelligence 16 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 643a505fefdbf1f0fa9915550a75b2b739aba1683858f92f332c9585c838690d
SHA3-384 hash: 0ae956a67c6b893d69f7d28afe71589cde2a9e6d46259eb572a0fdadf59fb3b3c84ad2254479b46adfbec4b6bea37f36
SHA1 hash: 174323edc68682341dd312095cefaa2c6680de24
MD5 hash: e7b674773e7c72426b2bcc90a9c1e299
humanhash: indigo-happy-victor-nine
File name:rpedido-002297.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:568'824 bytes
First seen:2024-10-03 16:00:05 UTC
Last seen:2024-10-03 19:01:49 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 1f23f452093b5c1ff091a2f9fb4fa3e9 (303 x GuLoader, 47 x AgentTesla, 47 x RemcosRAT)
ssdeep 12288:TaIq2S5iC8dHsPeOXHO80cE6PU2dLkbdG0A:WrJ8MLXHO8ZE6PU4IdGb
TLSH T14FC4DF972EC2D9CFC8270A7099E6B2B5B1F1ADF1A643690727737EF82D30E505E01619
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) (4504/4/1)
Magika pebin
File icon (PE):PE icon
dhash icon c4c2f0f8f83cbede (6 x GuLoader)
Reporter FXOLabs
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Sulfovaskemiddel Tykhana
Issuer:Sulfovaskemiddel Tykhana
Algorithm:sha256WithRSAEncryption
Valid from:2024-05-07T03:28:58Z
Valid to:2027-05-07T03:28:58Z
Serial number: 1a928a8c029b6add43b9e2654b40ea557296603b
Thumbprint Algorithm:SHA256
Thumbprint: ed9331a6f0d286d1cb8e1d1278848e8667318231c08bae2e3058778a3c1cec00
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
426
Origin country :
US US
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
rpedido-002297.exe
Verdict:
Malicious activity
Analysis date:
2024-10-03 16:01:26 UTC
Tags:
guloader
Link:
https://app.any.run/tasks/b8d7d4c9-9d6e-4f50-9442-380b004982e3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66febfc0780a9b632d22afb3
Tags:
Injection Exploit Obfusc Nsis
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a file in the %AppData% subdirectories
Delayed reading of the file
Creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
installer lolbin microsoft_visual_cc overlay packed shell32 signed
Link:
https://www.filescan.io/uploads/66febfbee5edb1861d70478a/reports/d8f037f3-a6d5-486b-8afa-80669a6f5bff/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/643a505fefdbf1f0fa9915550a75b2b739aba1683858f92f332c9585c838690d
Malware family:
Unlabeled
Create hunting rule
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/bb21f588-3d92-469e-9cee-a97d956a1fd3
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1525122
Signature
Antivirus / Scanner detection for submitted sample
Found direct / indirect Syscall (likely to bypass EDR)
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1525122 Sample: rpedido-002297.exe Startdate: 03/10/2024 Architecture: WINDOWS Score: 100 36 www.030002626.xyz 2->36 38 www.spectre.center 2->38 40 28 other IPs or domains 2->40 54 Suricata IDS alerts for network traffic 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 Antivirus / Scanner detection for submitted sample 2->58 62 3 other signatures 2->62 10 rpedido-002297.exe 1 30 2->10         started        signatures3 60 Performs DNS queries to domains with low reputation 36->60 process4 file5 30 C:\Users\user\...\Betalingsunderskud.Smm, data 10->30 dropped 32 C:\Users\user\AppData\Local\Temp\nss65F.tmp, data 10->32 dropped 34 C:\Users\user\AppData\Local\...\System.dll, PE32 10->34 dropped 74 Switches to a custom stack to bypass stack traces 10->74 14 rpedido-002297.exe 6 10->14         started        signatures6 process7 dnsIp8 48 drive.usercontent.google.com 142.250.176.193, 443, 49723 GOOGLEUS United States 14->48 50 drive.google.com 142.250.80.78, 443, 49722 GOOGLEUS United States 14->50 76 Maps a DLL or memory area into another process 14->76 18 ffHgJPmoWftQT.exe 14->18 injected signatures9 process10 signatures11 52 Found direct / indirect Syscall (likely to bypass EDR) 18->52 21 sethc.exe 13 18->21         started        process12 signatures13 64 Tries to steal Mail credentials (via file / registry access) 21->64 66 Tries to harvest and steal browser information (history, passwords, etc) 21->66 68 Modifies the context of a thread in another process (thread injection) 21->68 70 3 other signatures 21->70 24 ffHgJPmoWftQT.exe 21->24 injected 28 firefox.exe 21->28         started        process14 dnsIp15 42 nidedabeille.net 195.110.124.133, 49774, 49775, 49776 REGISTER-ASIT Italy 24->42 44 www.spectre.center 5.39.10.93, 49725, 49782, 80 OVHFR France 24->44 46 12 other IPs or domains 24->46 72 Found direct / indirect Syscall (likely to bypass EDR) 24->72 signatures16
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/643a505fefdbf1f0fa9915550a75b2b739aba1683858f92f332c9585c838690d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/643a505fefdbf1f0fa9915550a75b2b739aba1683858f92f332c9585c838690d/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2024-10-03 14:11:35 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mq5fax7p3py7b6uzcvkqu5nsw442xilihbmpslztfskylsbynegq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
error
GuLoader
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader discovery downloader
Link:
https://tria.ge/reports/241003-tf7mhstenk/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/3b2d5e70-26da-4ef3-897b-af7721460520
Unpacked files
SH256 hash:
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37
MD5 hash:
8b3830b9dbf87f84ddd3b26645fed3a0
SHA1 hash:
223bef1f19e644a610a0877d01eadc9e28299509
Link:
https://www.unpac.me/results/52cbda48-0604-4d3c-af80-f9ca7be697e8/
SH256 hash:
643a505fefdbf1f0fa9915550a75b2b739aba1683858f92f332c9585c838690d
MD5 hash:
e7b674773e7c72426b2bcc90a9c1e299
SHA1 hash:
174323edc68682341dd312095cefaa2c6680de24
Link:
https://www.unpac.me/results/52cbda48-0604-4d3c-af80-f9ca7be697e8/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/643a505fefdb/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/643a505fefdbf1f0fa9915550a75b2b739aba1683858f92f332c9585c838690d

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 643a505fefdbf1f0fa9915550a75b2b739aba1683858f92f332c9585c838690d

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::SetFileSecurityW
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDiskFreeSpaceW
KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileExW
KERNEL32.dll::MoveFileW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::OpenClipboard
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

Comments