MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d56c437e9a07ef3223c167a748fa470401cec439677e8d17b046870fb66e0fb9. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d56c437e9a07ef3223c167a748fa470401cec439677e8d17b046870fb66e0fb9
SHA3-384 hash: 296afce94ff795b2c2662131984a6626e212c4a03d65deb4ccf8614926a492d561a6f2ec1482ab155db3258cbfde1019
SHA1 hash: 1c94295c08cd8e41e839a5339da8caaf8e996081
MD5 hash: c7989820f0690e7cca3ca472fe5f1ac4
humanhash: shade-stairway-pluto-bacon
File name:BR1498-23.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'086'504 bytes
First seen:2023-10-11 12:27:09 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 24576:ZSB7zdFCejOHLok1sOPijEuplGRQjrlPB7Lw9IOiMpEOtoYIHXZVbFmuse4:sDWLoGsbjfGRerlm9IOiWEOGnrRtN4
Threatray 275 similar samples on MalwareBazaar
TLSH T126352321B400C322DC160D309637AED426ABAEFF96843C661FC579FE5D362859D3736A
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 dcd292bacee6aa98 (2 x GuLoader)
Reporter lowmal3
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
291
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
BR1498-23.exe
Verdict:
Malicious activity
Analysis date:
2023-10-11 12:29:19 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/76ab8ba4-160b-477e-8f92-b25a2a684764

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/453227/
Detection(s):
SecuriteInfo.com.Win32.Malware-gen.31382.23227.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a file in the %temp% directory
Delayed reading of the file
Gathering data
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/d56c437e9a07ef3223c167a748fa470401cec439677e8d17b046870fb66e0fb9
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/764a9a54-0c6b-48c2-a3c4-b4f37b600e15
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1323692
Signature
Installs a global keyboard hook
Maps a DLL or memory area into another process
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d56c437e9a07ef3223c167a748fa470401cec439677e8d17b046870fb66e0fb9/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Suspicious
First seen:
2023-10-11 08:29:41 UTC
AV detection:
9 of 23 (39.13%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2vweg7u2a7xtei6bm6tur6shaqa45rbzm57i2f5qi2dq7ntob64q._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
0156a3553f9c3a0d318e5efec95727c2a0111f19478eeaec9a320b5c35b400bb
GuLoader
12028f36ac1d3cd2cfae4ed0d5d1bd20ccbd550f87d62dc1a91e6f5ca21d87d7
GuLoader
1eda1b310543e616e8b7b97e8e5f13597fb3a67ed9658b3daba2f49361563689
GuLoader
5485c351ca583b40b70345114311f9f514014c054b5317ef6c5744a3faed5233
GuLoader
6ca768e186aca34cce8eb9a3283f2a17a28f9b81281d464a3c80561b4fbaf066
GuLoader
7e6b3d8f37991cef921fd8c8f0a0c48a76e437665ac60db3afe271d14de9bff5
GuLoader
c1cb5a4a27cf88c43845d65d73c7ca0706b00f8c999301061b745ce922c1bd12
GuLoader
d8268bed755a9098351b3acfbfca2096882c89ae5517621d34580b4de8ee6120
GuLoader
f83e250464f6858450036307a76e5c5a8bb97d9f8a6c54ada3df4b863b4cf507
GuLoader
+ 265 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/231011-pnbgtshd68/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
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
Looks up external IP address via web service
Loads dropped DLL
Unpacked files
SH256 hash:
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
MD5 hash:
75ed96254fbf894e42058062b4b4f0d1
SHA1 hash:
996503f1383b49021eb3427bc28d13b5bbd11977
Link:
https://www.unpac.me/results/ff70e681-c9ed-45e6-bf78-e1e0800619dd/
SH256 hash:
d56c437e9a07ef3223c167a748fa470401cec439677e8d17b046870fb66e0fb9
MD5 hash:
c7989820f0690e7cca3ca472fe5f1ac4
SHA1 hash:
1c94295c08cd8e41e839a5339da8caaf8e996081
Link:
https://www.unpac.me/results/ff70e681-c9ed-45e6-bf78-e1e0800619dd/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d56c437e9a07/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/d56c437e9a07ef3223c167a748fa470401cec439677e8d17b046870fb66e0fb9

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_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.

Malspam

GuLoader

Executable exe d56c437e9a07ef3223c167a748fa470401cec439677e8d17b046870fb66e0fb9

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/453227/

Comments