MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4fb8c1347c9e520c1a6d21540d1bd2453651038f44ed8eb24948f55a1d6ecd41. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4fb8c1347c9e520c1a6d21540d1bd2453651038f44ed8eb24948f55a1d6ecd41
SHA3-384 hash: e0449e90f7fcd2ee9842d5c2f8669240be26f4b47275d0e7da3e116bfcc360202b13e13d8b835f5f8e25e2a3e6742a97
SHA1 hash: 16c64f2dc8a3b97fa22c834f8cbb12de994cbf5a
MD5 hash: d5b310c4152bc3bedbcb88d855377d77
humanhash: sad-march-low-fruit
File name:CMR_PL7858345353_1_FB-LK_1025_WDF44770313563801.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'791'192 bytes
First seen:2023-10-12 09:51:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (527 x GuLoader, 110 x RemcosRAT, 80 x EpsilonStealer)
ssdeep 49152:T8mdIHWVogwK5/AXx1RPIf44B81jKn/VS5pXw6QY:T8mdIHW/JKyl+Fl5QY
Threatray 2'658 similar samples on MalwareBazaar
TLSH T1B38512D35A2C98C3E4A456B4A80BE7B36B740FF1B925A5163073773B94B1BD1292F06C
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 78ceadb1a9adc470 (3 x GuLoader)
Reporter Anonymous
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-11-19T09:31:02Z
Valid to:2025-11-18T09:31:02Z
Serial number: 479795e203f824f7a47c98c6062750e57be7077a
Thumbprint Algorithm:SHA256
Thumbprint: b54580a012d3e75399744b4c7d116cfbba573c547413d73228811bc157dc62d5
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
322
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
CMR_PL7858345353_1_FB-LK_1025_WDF44770313563801.exe
Verdict:
Malicious activity
Analysis date:
2023-10-12 09:53:01 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/988cd778-b58c-4f70-8778-5c13ee26d9cf

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/453734/
Detection(s):
SecuriteInfo.com.HEUR.Trojan.Win32.Makoob.gen.29951.15447.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Delayed reading of the file
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/6527c1c4c51de9263e58fdc5/reports/6e0b790e-117a-4c5c-86c8-a5b62cc852e3/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/4fb8c1347c9e520c1a6d21540d1bd2453651038f44ed8eb24948f55a1d6ecd41
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/32014926-d4ca-4408-a250-c4ca678aac03
Result
Threat name:
GuLoader, Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad.phis.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1324542
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to modify clipboard data
Found malware configuration
Installs a global keyboard hook
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Writes to foreign memory regions
Yara detected GuLoader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1324542 Sample: CMR_PL7858345353_1_FB-LK_10... Startdate: 12/10/2023 Architecture: WINDOWS Score: 100 32 unif-pid.com 2->32 34 geoplugin.net 2->34 48 Snort IDS alert for network traffic 2->48 50 Found malware configuration 2->50 52 Multi AV Scanner detection for submitted file 2->52 54 6 other signatures 2->54 8 CMR_PL7858345353_1_FB-LK_1025_WDF44770313563801.exe 2 71 2->8         started        signatures3 process4 file5 26 C:\Users\user\AppData\Local\...\System.dll, PE32 8->26 dropped 56 Writes to foreign memory regions 8->56 58 Maps a DLL or memory area into another process 8->58 12 wab.exe 4 16 8->12         started        signatures6 process7 dnsIp8 36 unif-pid.com 54.37.178.173, 49733, 49734, 80 OVHFR France 12->36 38 95.214.24.210, 2404, 49736, 49737 CMCSUS Germany 12->38 40 geoplugin.net 178.237.33.50, 49738, 80 ATOM86-ASATOM86NL Netherlands 12->40 28 C:\Users\user\AppData\Roaming\ourytgbh.dat, data 12->28 dropped 30 C:\Users\user\AppData\...\Tekstureredes.exe, PE32 12->30 dropped 60 Maps a DLL or memory area into another process 12->60 62 Installs a global keyboard hook 12->62 17 wab.exe 1 12->17         started        20 wab.exe 1 12->20         started        22 wab.exe 2 12->22         started        24 wab.exe 12->24         started        file9 signatures10 process11 signatures12 42 Tries to steal Instant Messenger accounts or passwords 17->42 44 Tries to harvest and steal browser information (history, passwords, etc) 17->44 46 Tries to steal Mail credentials (via file / registry access) 20->46
Score:
75%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4fb8c1347c9e520c1a6d21540d1bd2453651038f44ed8eb24948f55a1d6ecd41
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4fb8c1347c9e520c1a6d21540d1bd2453651038f44ed8eb24948f55a1d6ecd41/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-10-12 05:27:12 UTC
File Type:
PE (Exe)
Extracted files:
29
AV detection:
12 of 21 (57.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j64mcnd4tzjaygtnefka2g6siu3fca4pitwy5msjjd2vuhlozvaq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
cloudeye
Create hunting rule
Similar samples:
0dde47d0905eb44af2fe7b3604c88ceb170b977312730dabd17a96de610a33b6
GuLoader
456f09b71ed09cbc590f6a3b8d5aacc7f0fb94521d8b19b80d2a201e5f73b5a0
GuLoader
4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6d
GuLoader
67334009d5d6fb492333a8d6a850b2c464654aaaf96ddeef125129af29ea3d66
GuLoader
75b6aa1e75a213e7d4184249f86f3b8c4770ea2443ae77e7e6c4f499636b6f71
GuLoader
b2823172397c389e1ff948bd03473193ed8527eb19edff06cbb16e2b43ebc19f
GuLoader
b2d5e15268cb130c995118e17afa1198ca19604a20b91f1907a7ef18210db30f
GuLoader
bad6dc695ec91155fbf548d43e3039c1b694db28c1a713b81ecc2d59674635cb
GuLoader
fc38656ef9f0487f431fc7e32fd39213ebeefc9ca0728fe04d160cce657d5af4
GuLoader
+ 2'648 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/231012-lv3ccadf33/
Behaviour
Enumerates physical storage devices
Loads dropped DLL
Unpacked files
SH256 hash:
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
MD5 hash:
75ed96254fbf894e42058062b4b4f0d1
SHA1 hash:
996503f1383b49021eb3427bc28d13b5bbd11977
Link:
https://www.unpac.me/results/cd278f07-639b-4145-afc1-18a32593a032/
SH256 hash:
4fb8c1347c9e520c1a6d21540d1bd2453651038f44ed8eb24948f55a1d6ecd41
MD5 hash:
d5b310c4152bc3bedbcb88d855377d77
SHA1 hash:
16c64f2dc8a3b97fa22c834f8cbb12de994cbf5a
Link:
https://www.unpac.me/results/cd278f07-639b-4145-afc1-18a32593a032/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4fb8c1347c9e/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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_no_import_table
Create hunting rule
Author:qux
Description:Detects exe does not have import table
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/453734/

Comments