MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 49f8ea644b5a69f7e8569c513168fa892922cc8e3e56617d7d225c9a85e3d520. 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: 14


Intelligence 14 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 49f8ea644b5a69f7e8569c513168fa892922cc8e3e56617d7d225c9a85e3d520
SHA3-384 hash: ea384065cfb76133ad77b3e1f31434c9c8da500e998aa1697ea26b22d241fbc1f290198f76ba829522d6edac8b96c04c
SHA1 hash: 28e3c0b89d03a24570eb0e3c5bf568cccd8ea591
MD5 hash: 81d04abe6c3c539fc74208a60d043462
humanhash: pizza-happy-eleven-artist
File name:49f8ea644b5a69f7e8569c513168fa892922cc8e3e56617d7d225c9a85e3d520
Download: download sample
Signature GuLoader
Create hunting rule
File size:693'898 bytes
First seen:2023-05-10 10:05:04 UTC
Last seen:2023-05-13 22:43:18 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 3abe302b6d9a1256e6a915429af4ffd2 (271 x GuLoader, 38 x Formbook, 25 x Loki)
ssdeep 12288:kH+/vBkZcYasAtii7zXe30F668rEWHcZZYwbqhU4RhTRgI:i+/JqcL7zh668r1cZ+gqhVT9
Threatray 781 similar samples on MalwareBazaar
TLSH T160E4E617A21182E2C475BEB2CBCE59546E386D3E469EC16F75B8F27A28F3351450BC8C
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 f03e9454652d259a (4 x GuLoader, 3 x Formbook)
Reporter adrian__luca
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
2
# of downloads :
269
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
49f8ea644b5a69f7e8569c513168fa892922cc8e3e56617d7d225c9a85e3d520
Verdict:
Malicious activity
Analysis date:
2023-05-10 10:04:54 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c9e779ba-9dad-4dbf-a3d9-ad4d371cedf0

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/388120/
Detection(s):
SecuriteInfo.com.Troj.Inject-EAO.957.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/83343/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
babar buer guloader overlay packed shell32.dll trickbot
Link:
https://www.filescan.io/uploads/645b6c8ad054a0b0ef848218/reports/9c65b32f-c250-4871-8ead-48b84c18865a/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/49f8ea644b5a69f7e8569c513168fa892922cc8e3e56617d7d225c9a85e3d520
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/73e2116d-1269-4104-b09f-b9906d7582dc
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1229915
Signature
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Snort IDS alert for network traffic
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Very long command line found
Writes to foreign memory regions
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 862897 Sample: KUfSP53L5g.exe Startdate: 10/05/2023 Architecture: WINDOWS Score: 92 27 Snort IDS alert for network traffic 2->27 29 Multi AV Scanner detection for submitted file 2->29 31 Yara detected GuLoader 2->31 33 2 other signatures 2->33 8 KUfSP53L5g.exe 2 19 2->8         started        process3 file4 23 C:\Users\user\AppData\...\AdminTools.exe, PE32+ 8->23 dropped 11 powershell.exe 12 8->11         started        process5 signatures6 37 Very long command line found 11->37 14 powershell.exe 13 11->14         started        17 conhost.exe 11->17         started        process7 signatures8 39 Writes to foreign memory regions 14->39 41 Tries to detect Any.run 14->41 19 ieinstal.exe 12 14->19         started        process9 dnsIp10 25 185.254.37.66, 49841, 80 NETERRA-ASBG Germany 19->25 35 Tries to detect Any.run 19->35 signatures11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/49f8ea644b5a69f7e8569c513168fa892922cc8e3e56617d7d225c9a85e3d520/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Suspicious
First seen:
2023-04-28 08:30:39 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
20 of 37 (54.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jh4ouzcllju7p2cwtritc2h2reusfteohzlgc7l5ejojvbpd2uqa._file
Verdict:
malicious
Similar samples:
07fa172e1404c76738226cefc6e5d45559430c9946e419ed089d9ae5690783f9
GuLoader
18b1abba90cf4a74b7216b91f02febb1c8694113f5ddc3507fd35b66253bcb83
GuLoader
3f6b1b62fd63112b0626567e8cd6a9179499109f1aee6fe0627d9b429add64d1
GuLoader
494d5735144af171cc15708b37b491b74be1522494958e605ac348dd4897dcf9
GuLoader
601068d38fe3988fac053f5be6fcd8f364ac199fcd278ebe10cd7ee74e9b2726
GuLoader
b534709b0de0c4392af03fea261580b08915ae1e5a55496f85dc21500c6a8338
GuLoader
d989ab685c59463a2ae115503881d520032409525de9846d458583e4ad75fc15
GuLoader
f13b318caba7938d24d18b32e16a1f111ec694b313590a4023f5e277d70ef7db
GuLoader
+ 771 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/230510-l43dpshc3t/
Behaviour
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 NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Guloader,Cloudeye
Unpacked files
SH256 hash:
49f8ea644b5a69f7e8569c513168fa892922cc8e3e56617d7d225c9a85e3d520
MD5 hash:
81d04abe6c3c539fc74208a60d043462
SHA1 hash:
28e3c0b89d03a24570eb0e3c5bf568cccd8ea591
Link:
https://www.unpac.me/results/b4ebca80-b666-4b30-975e-7e518bde74a5/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/49f8ea644b5a/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/49f8ea644b5a69f7e8569c513168fa892922cc8e3e56617d7d225c9a85e3d520

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

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/388120/

Comments