MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5a64a3fd65f7176b7ad623893e3cb573af13eb51850f8243a1951884eee757a9. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5a64a3fd65f7176b7ad623893e3cb573af13eb51850f8243a1951884eee757a9
SHA3-384 hash: b20d85be127ac18e9ea84028b2b0fe920e638629fb4086fde69275046007e8a5064d90185e4012342bf358882513f661
SHA1 hash: 5cf4113debe6d37bd770d8d3870647b8bac082a3
MD5 hash: 8a81948116d2ea79bee1d261733dba89
humanhash: missouri-seven-fourteen-hotel
File name:Quotation.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:693'360 bytes
First seen:2023-03-20 13:46:04 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 12288:QV5CSEuHKGQYpovMKcZnY4UKwp7hVOZCbgjvwf:QV51qFMccUNEZCbgjY
Threatray 608 similar samples on MalwareBazaar
TLSH T17BE42317B19382C3D5E749F53E698B3683B33F570D22878FF2AA37B19974914812A427
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 8488c8c888c8c888 (9 x GuLoader, 1 x Formbook)
Reporter malwarelabnet
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-08-15T01:11:02Z
Valid to:2025-08-14T01:11:02Z
Serial number: 3f5567173d0043c048ab0658fb8124dcff6dde12
Thumbprint Algorithm:SHA256
Thumbprint: a645406ac892515d81fc329ab84addf8c558f2770665b05f23cfc9f4c322d1dc
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
237
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Quotation.exe
Verdict:
Malicious activity
Analysis date:
2023-03-20 13:50:00 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/45bf4648-f02e-497e-bd4f-d6018be4865d

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/375952/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Delayed reading of the 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/74296/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer comodo guloader overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/641863d7c60b3295f52c1760/reports/d922d7c4-e5ff-475e-b20e-ccdb88cd07e2/overview
Verdict:
Malicious
Labled as:
Win/grayware_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/5a64a3fd65f7176b7ad623893e3cb573af13eb51850f8243a1951884eee757a9
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/23d57c36-4d57-4f5c-bb06-079f6044192c
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.rans.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1197721
Signature
Found potential ransomware demand text
Initial sample is a PE file and has a suspicious name
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 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 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 Generic Downloader
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 830618 Sample: Quotation.exe Startdate: 20/03/2023 Architecture: WINDOWS Score: 100 38 www.texasgent.com 2->38 40 www.solya-shop.com 2->40 42 20 other IPs or domains 2->42 60 Snort IDS alert for network traffic 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 Multi AV Scanner detection for submitted file 2->64 66 6 other signatures 2->66 11 Quotation.exe 1 38 2->11         started        signatures3 process4 file5 30 C:\Users\user\AppData\Local\...\System.dll, PE32 11->30 dropped 32 C:\Users\user\AppData\Local\...\System.dll, PE32 11->32 dropped 34 C:\Users\user\AppData\...\percentile.dll, PE32+ 11->34 dropped 36 5 other files (none is malicious) 11->36 dropped 78 Tries to detect Any.run 11->78 15 Quotation.exe 6 11->15         started        signatures6 process7 dnsIp8 50 www.wittofitentertainment.com 162.240.73.101, 443, 49854 UNIFIEDLAYER-AS-1US United States 15->50 52 Modifies the context of a thread in another process (thread injection) 15->52 54 Tries to detect Any.run 15->54 56 Maps a DLL or memory area into another process 15->56 58 2 other signatures 15->58 19 explorer.exe 2 1 15->19 injected signatures9 process10 dnsIp11 44 www.interactive-media.ru 88.212.206.251, 49858, 49921, 80 UNITEDNETRU Russian Federation 19->44 46 www.brightfms.com 81.17.18.196, 49909, 49910, 49911 PLI-ASCH Switzerland 19->46 48 12 other IPs or domains 19->48 68 System process connects to network (likely due to code injection or exploit) 19->68 23 control.exe 13 19->23         started        signatures12 process13 signatures14 70 Tries to steal Mail credentials (via file / registry access) 23->70 72 Tries to harvest and steal browser information (history, passwords, etc) 23->72 74 Writes to foreign memory regions 23->74 76 3 other signatures 23->76 26 firefox.exe 23->26         started        process15 process16 28 WerFault.exe 4 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5a64a3fd65f7176b7ad623893e3cb573af13eb51850f8243a1951884eee757a9/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2023-03-20 07:31:19 UTC
File Type:
PE (Exe)
Extracted files:
18
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ljskh7lf64lww6wweoet4pfvooxrh22rquhyeq5bsumij3xhk6uq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
07843e27993206a92d9e0bfbb249332fcfedad068bec8f7f7f3f318654c7910c
GuLoader
0802394968eda97506836e12c3deb32af74ad1ffcc86b22e4d654d10b865241c
GuLoader
0c2e6d5acb82c3c9a5d9aebd50ea3982f10dd70eb516e639b4f8c12d6453c5c8
GuLoader
1546e632cb3cd6abb0497a1e941d7c1afefd3d1bc7582b63f49d948241406b80
GuLoader
4c82ea367bd7a79a5ef059e8f1910af89374e4e4fb75819c5540f3126904c33d
GuLoader
85b572a6060bf6d434ab978aa1447096c11f84bcd329d71364de8daf261a4660
GuLoader
9994b20e500ad5c9973f3627d3b9225b7b7b6f9ef2c5dd37b93d71a8e479007c
GuLoader
b0e5e12bea8386e6e06c82e4e25257b22649a608b2ef2a599332879983a000b0
GuLoader
bbce488ca134416b61010d40ba42d0c867493d6785bffa25c5e7568e3eeacb7c
GuLoader
bedb5ef007caf41eb52f0331f1fdf5997271a828df7adb1e1132063129eba99e
GuLoader
+ 598 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/230320-q21vbadg46/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Checks computer location settings
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
ac9dfe3b35ea4b8932536ed7406c29a432976b685cc5322f94ef93df920fede7
MD5 hash:
0063d48afe5a0cdc02833145667b6641
SHA1 hash:
e7eb614805d183ecb1127c62decb1a6be1b4f7a8
Link:
https://www.unpac.me/results/dd5057b0-057d-44da-8c65-3b22dce2f95f/
Parent samples :
5312214b15330113f6eab71565e1e3c7d1ee3b59daa6703c271aaf3b192e6809
02fca6ef5d9d8b1eb29f7ac8ea0573b504ea7f06c215e091791653b40fe1329a
cc53accc69b32c2507210ea70d1d56aa84dbe354a7f79577df180179ea797427
045a7318a9e2e550208c0c7e9fc805068df19fa73823ac3acaa049a46c4045ee
f2a883a0e4b01c72b0f063df3be5a0102e5c8fbaedc39c8d35c632b200599283
dffefbde27442b9095388b1871ffdc101c430b9a814138be4f962328a5b73fde
e0fb60da371912c158861c9660632d58e45cfcff12351cc9e03f497f319eb5de
904f69a4bed3844273cce1676e8920794815af4c1527e560bbc1bc44b5b8457a
SH256 hash:
3079304b199ba060ec2f8caded24c98bf11c12618188401fe51ced76ef308725
MD5 hash:
3457e195097f2f56aa095b14e8589ea7
SHA1 hash:
69ec8e3b73a72cc0ae06d53de7aed9668dd29dcb
Link:
https://www.unpac.me/results/dd5057b0-057d-44da-8c65-3b22dce2f95f/
SH256 hash:
d99c171ddf89cde390f2da6152118e5fe26ec9bda1eab6152c5d8e2caa3855bf
MD5 hash:
8efc64cc3efadaedcd93b04ef7253de6
SHA1 hash:
ed6cb522b294134ab1d35597655bd4dce5a08a92
Link:
https://www.unpac.me/results/dd5057b0-057d-44da-8c65-3b22dce2f95f/
SH256 hash:
5a64a3fd65f7176b7ad623893e3cb573af13eb51850f8243a1951884eee757a9
MD5 hash:
8a81948116d2ea79bee1d261733dba89
SHA1 hash:
5cf4113debe6d37bd770d8d3870647b8bac082a3
Link:
https://www.unpac.me/results/dd5057b0-057d-44da-8c65-3b22dce2f95f/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/5a64a3fd65f7/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
GuLoader
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/5a64a3fd65f7176b7ad623893e3cb573af13eb51850f8243a1951884eee757a9

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
Rule name:PE_Potentially_Signed_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.

Cape
Cape
https://www.capesandbox.com/analysis/375952/

Comments