MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a6e1cd5a012f8a7290862a9d6ed503de1d43a86f1e35e71c4edf838fb3159eef. 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: 10


Intelligence 10 IOCs YARA File information Comments

SHA256 hash: a6e1cd5a012f8a7290862a9d6ed503de1d43a86f1e35e71c4edf838fb3159eef
SHA3-384 hash: f48de074944b3630e3388304f1ed4dc6b1af0a3b574978bf4d18789a26e75d9599f4352f5980c1fa9d744c9d49822530
SHA1 hash: eacbdc0c327353c0e8cf0a9ed85155151593d02d
MD5 hash: 5979babb1f60827a4f0d1c0aaf55d789
humanhash: apart-sink-floor-florida
File name:QUOTE NO15448-1.pdf.exe
Download: download sample
Signature GuLoader
File size:420'141 bytes
First seen:2023-07-24 09:07:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 6e7f9a29f2c85394521a08b9f31f6275 (278 x GuLoader, 44 x RemcosRAT, 40 x VIPKeylogger)
ssdeep 12288:zMwxaHroVIcy1j9SXe1iG1pExO39LH5RYG:zMwxaroyZpEx+LMG
Threatray 1'846 similar samples on MalwareBazaar
TLSH T15B940255FB51C16FCA510AB11D319EF27A92AF52FC280F0F23453B4F7979A82880E786
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 020375d60608ae06 (6 x GuLoader)
Reporter abuse_ch
Tags:exe GuLoader

Intelligence


File Origin
# of uploads :
1
# of downloads :
287
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
QUOTE NO15448-1.pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-07-24 09:09:15 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %AppData% subdirectories
Delayed reading of the file
Creating a file in the %temp% subdirectories
Gathering data
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.
Result
Threat name:
GuLoader, AgentTesla
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Multi AV Scanner detection for submitted file
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 steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1278171 Sample: QUOTE_NO15448-1.pdf.exe Startdate: 24/07/2023 Architecture: WINDOWS Score: 100 37 googlehosted.l.googleusercontent.com 2->37 39 drive.google.com 2->39 41 doc-0k-c4-docs.googleusercontent.com 2->41 53 Multi AV Scanner detection for submitted file 2->53 55 Yara detected GuLoader 2->55 57 Yara detected AgentTesla 2->57 59 3 other signatures 2->59 8 QUOTE_NO15448-1.pdf.exe 2 34 2->8         started        12 MmRKwR.exe 2 2->12         started        14 MmRKwR.exe 1 2->14         started        signatures3 process4 file5 31 C:\Users\user\AppData\Local\...\System.dll, PE32 8->31 dropped 61 Writes to foreign memory regions 8->61 63 Tries to detect Any.run 8->63 16 CasPol.exe 2 13 8->16         started        21 CasPol.exe 8->21         started        23 conhost.exe 12->23         started        25 conhost.exe 14->25         started        signatures6 process7 dnsIp8 33 drive.google.com 172.217.168.46, 443, 50098 GOOGLEUS United States 16->33 35 googlehosted.l.googleusercontent.com 172.217.168.65, 443, 50099 GOOGLEUS United States 16->35 29 C:\Users\user\AppData\Roaming\...\MmRKwR.exe, PE32 16->29 dropped 43 Tries to steal Mail credentials (via file / registry access) 16->43 45 Tries to harvest and steal browser information (history, passwords, etc) 16->45 47 Tries to detect Any.run 16->47 49 Hides that the sample has been downloaded from the Internet (zone.identifier) 16->49 27 conhost.exe 16->27         started        51 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 21->51 file9 signatures10 process11
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2023-07-24 08:52:24 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
17 of 25 (68.00%)
Threat level:
  5/5
Result
Malware family:
guloader
Score:
  10/10
Tags:
family:agenttesla family:guloader collection discovery downloader keylogger persistence spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Program crash
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Checks installed software on the system
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Loads dropped DLL
AgentTesla
Guloader,Cloudeye
Unpacked files
SH256 hash:
acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506
MD5 hash:
6e55a6e7c3fdbd244042eb15cb1ec739
SHA1 hash:
070ea80e2192abc42f358d47b276990b5fa285a9
SH256 hash:
a6e1cd5a012f8a7290862a9d6ed503de1d43a86f1e35e71c4edf838fb3159eef
MD5 hash:
5979babb1f60827a4f0d1c0aaf55d789
SHA1 hash:
eacbdc0c327353c0e8cf0a9ed85155151593d02d
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Malspam

GuLoader

Executable exe a6e1cd5a012f8a7290862a9d6ed503de1d43a86f1e35e71c4edf838fb3159eef

(this sample)

  
Delivery method
Distributed via e-mail attachment

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