MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ef7f19d2375be6cc0a9ec89af142e257820fe21e44492cee6537a3abf432d90. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4ef7f19d2375be6cc0a9ec89af142e257820fe21e44492cee6537a3abf432d90
SHA3-384 hash: af5bd1d191dbe44c869fe453eef58a2886d42fd0579c0ca3215f82e49ff956ba47d912378e08b6d406de9ef8c25e2481
SHA1 hash: cdbce88aff63b0e5ef47052dbac0ddd4252b5d44
MD5 hash: 88c993898fd5890a9511d61537b12e8d
humanhash: fruit-romeo-lithium-purple
File name:4ef7f19d2375be6cc0a9ec89af142e257820fe21e44492cee6537a3abf432d90
Download: download sample
Signature GuLoader
Create hunting rule
File size:373'973 bytes
First seen:2023-04-04 12:49:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3abe302b6d9a1256e6a915429af4ffd2 (277 x GuLoader, 38 x Formbook, 25 x Loki)
ssdeep 6144:Ua4TQun1QxM0deBYsLfhZ+wDN3h3C2IR18:14ca1QleB/LfhZ+wJ37Ik
Threatray 695 similar samples on MalwareBazaar
TLSH T14D84CE056E10F057E759ACB1E2F1E70E89A2BE399B01400BC6FD763D463F37D68AA245
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 c03b3f3b2b3b3300 (3 x Loki, 1 x GuLoader)
Reporter adrian__luca
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
239
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4ef7f19d2375be6cc0a9ec89af142e257820fe21e44492cee6537a3abf432d90
Verdict:
Malicious activity
Analysis date:
2023-04-04 12:49:12 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7f98a1c9-4db1-4c44-8e65-3c38abf12193

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/380018/
Detection(s):
SecuriteInfo.com.Trojan.Generic.33366806.20280.29879.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
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/76500/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer dde guloader overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/642c1cfb35c10d8aaf289928/reports/f9502376-0a9a-4e64-a85b-4df8ebfcb2d6/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/4ef7f19d2375be6cc0a9ec89af142e257820fe21e44492cee6537a3abf432d90
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.
Malware family:
Wget
Create hunting rule
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/4cb84927-fe25-4812-a4be-d5c426c5292b
Result
Threat name:
GuLoader, Lokibot
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1208263
Signature
Antivirus detection for URL or domain
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Tries to detect Any.run
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 GuLoader
Yara detected Lokibot
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4ef7f19d2375be6cc0a9ec89af142e257820fe21e44492cee6537a3abf432d90/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-03-27 12:02:37 UTC
File Type:
PE (Exe)
Extracted files:
19
AV detection:
17 of 37 (45.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j337dhjdow7gzqfj5se26fboev4cb7rb4rcjftxgkn5dvp2dfwia._file
Verdict:
malicious
Similar samples:
07fa172e1404c76738226cefc6e5d45559430c9946e419ed089d9ae5690783f9
GuLoader
18b1abba90cf4a74b7216b91f02febb1c8694113f5ddc3507fd35b66253bcb83
GuLoader
20fb078a0205ca04adf66dd2250409721698e14e9e1d2590eeff2873265e896b
GuLoader
494d5735144af171cc15708b37b491b74be1522494958e605ac348dd4897dcf9
GuLoader
723ff97e6559f6558c288ca693898592a21aab28c003883ca13b81667d7e3aef
GuLoader
b534709b0de0c4392af03fea261580b08915ae1e5a55496f85dc21500c6a8338
GuLoader
dc5da53a5e93a588335b6561258d1540ac7d696c633d03de92e72d8e53254234
GuLoader
f13b318caba7938d24d18b32e16a1f111ec694b313590a4023f5e277d70ef7db
GuLoader
+ 685 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
collection spyware stealer
Link:
https://tria.ge/reports/230404-p2xxzsfa22/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Loads dropped DLL
Reads user/profile data of web browsers
Unpacked files
SH256 hash:
a0cac4cf4852895619bc7743ebeb89f9e4927ccdb9e66b1bcd92a4136d0f9c77
MD5 hash:
b0c77267f13b2f87c084fd86ef51ccfc
SHA1 hash:
f7543f9e9b4f04386dfbf33c38cbed1bf205afb3
Link:
https://www.unpac.me/results/b6234fc8-5a8d-4f04-9b41-0d30bac986d1/
SH256 hash:
4ef7f19d2375be6cc0a9ec89af142e257820fe21e44492cee6537a3abf432d90
MD5 hash:
88c993898fd5890a9511d61537b12e8d
SHA1 hash:
cdbce88aff63b0e5ef47052dbac0ddd4252b5d44
Link:
https://www.unpac.me/results/b6234fc8-5a8d-4f04-9b41-0d30bac986d1/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4ef7f19d2375/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/4ef7f19d2375be6cc0a9ec89af142e257820fe21e44492cee6537a3abf432d90

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:Suspicious_Macro_Presence
Create hunting rule
Author:Mehmet Ali Kerimoglu (CYB3RMX)
Description:This rule detects common malicious/suspicious implementations.

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/380018/

Comments