MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 648ee80543d70f070c497309e4c7ce090254374da938799074de93bdaafaff5a. 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: 14


Intelligence 14 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 648ee80543d70f070c497309e4c7ce090254374da938799074de93bdaafaff5a
SHA3-384 hash: 68d2d737a336c88d874c3319da040fc314821e0460ad2fc3b279d60f03f70f089111050dead6d0e0efb1c5e5328787b7
SHA1 hash: be82357d711260a412103e7fde8785febd060974
MD5 hash: 816b7984251ee4c846a7f0d6160624e2
humanhash: nine-tennessee-glucose-kilo
File name:Quotation.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'182'800 bytes
First seen:2024-11-05 14:06:02 UTC
Last seen:2024-11-06 19:30:32 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 3f91aceea750f765ef2ba5d9988e6a00 (45 x GuLoader, 9 x RemcosRAT, 7 x Loki)
ssdeep 24576:G4nhDoAFAcvHumQbl7nu5v12dUC5YpdBNFQWEZNXLGQ7WczkxFnfbP9:G+hkJcvfyl7nu5vaUCMd5iNXKQKczg
Threatray 183 similar samples on MalwareBazaar
TLSH T1D945232936A5C08FEA42473C4FE7E275D93AEC143D25A11773712B8EAD72248ED9A350
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10522/11/4)
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
Reporter threatcat_ch
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Bomsejlene
Issuer:Bomsejlene
Algorithm:sha256WithRSAEncryption
Valid from:2024-09-29T23:05:19Z
Valid to:2027-09-29T23:05:19Z
Serial number: 5f969fe105f61264187891d561f93ffcd4c5c2c2
Thumbprint Algorithm:SHA256
Thumbprint: 306b7faa9674c71ec53027c9819d39369f7d5968fa573b05221bc17b61a182bc
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
5
# of downloads :
391
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
Quotation.exe
Verdict:
Malicious activity
Analysis date:
2024-11-05 14:10:25 UTC
Tags:
evasion smtp exfiltration stealer agenttesla
Link:
https://app.any.run/tasks/cb1aeb95-0e26-4e80-9fff-48c9019d727b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Inject5.11196.9701.22841.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=672a25228d23d9049133c467
Tags:
exploit uloader nsis blic
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file
Searching for the window
Creating a file in the %temp% subdirectories
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer microsoft_visual_cc overlay packed
Link:
https://www.filescan.io/uploads/672a2656cc1a4bf6fda0b995/reports/807af5b2-fbdb-4cfb-a8a6-2e3cdb091c2d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/648ee80543d70f070c497309e4c7ce090254374da938799074de93bdaafaff5a
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/78a89002-cce8-4157-bb63-e2a81e012c45
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1549339
Signature
AI detected suspicious sample
Contains functionality to register a low level keyboard hook
Found malware configuration
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/648ee80543d70f070c497309e4c7ce090254374da938799074de93bdaafaff5a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/648ee80543d70f070c497309e4c7ce090254374da938799074de93bdaafaff5a/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2024-11-05 13:25:20 UTC
File Type:
PE (Exe)
Extracted files:
11
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mshoqbkd24hqodcjome6jr6obebfin2nve4htedu32j33kx275na._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
23df64fa762b5942d08dc6bf6f5afc75fc932519a96070af492e237b5483747f
GuLoader
c7fdd9b509804cf9e1d76b23a3d2c0f9529ec9e227b7e003f146d6d92f0aadb9
GuLoader
d379ffe32dfb2d6d386b6d9c3cbae49e49241ac25a14d2974c286bfa45aa50b9
GuLoader
dd15fe7ea08743edcf83e3511206a76569d339d9c6e10a99e7d977f911131b76
GuLoader
error
GuLoader
fed0ecd2eaf8028eddfefd92b374bf515059a07daf18f30fb1e4faf9b1d4c3c2
GuLoader
+ 173 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:guloader discovery downloader keylogger spyware stealer trojan
Link:
https://tria.ge/reports/241105-refrassdlf/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Loads dropped DLL
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Agenttesla family
Guloader family
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/514239f6-4711-4be0-b35b-e7228c0164e8
Unpacked files
SH256 hash:
f917aef484d1fbb4d723b2e2d3045cb6f5f664e61fbb3d5c577bd1c215de55d9
MD5 hash:
d6f54d2cefdf58836805796f55bfc846
SHA1 hash:
b980addc1a755b968dd5799179d3b4f1c2de9d2d
Link:
https://www.unpac.me/results/ea16e1b7-4364-4e44-a379-be36458b553b/
SH256 hash:
648ee80543d70f070c497309e4c7ce090254374da938799074de93bdaafaff5a
MD5 hash:
816b7984251ee4c846a7f0d6160624e2
SHA1 hash:
be82357d711260a412103e7fde8785febd060974
Link:
https://www.unpac.me/results/ea16e1b7-4364-4e44-a379-be36458b553b/
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: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 648ee80543d70f070c497309e4c7ce090254374da938799074de93bdaafaff5a

(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::MoveFileW
KERNEL32.dll::MoveFileExW
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

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