MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 db8531844df91c21008a7e9491568ac304846137a4ba3c30f23f91f7c058cc36. 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: 12


Intelligence 12 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: db8531844df91c21008a7e9491568ac304846137a4ba3c30f23f91f7c058cc36
SHA3-384 hash: 577d4b72840a360f9d1b257cf12a1ac631148716e5f6d9702112bdc25027f6741f22e38951bcf08ed89b2adf1127507e
SHA1 hash: da3743a6e2fbf39ee52694a6dcc5bb14ee899249
MD5 hash: 88bb26d6b123f29679fcdad414a517c4
humanhash: illinois-video-shade-sixteen
File name:BO353672UH.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:497'791 bytes
First seen:2023-03-28 08:19:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7c2c71dfce9a27650634dc8b1ca03bf0 (160 x Loki, 58 x Formbook, 55 x Adware.Generic)
ssdeep 6144:6QLFhr+DpuPJFjJYILWt37NncdDLL9low1jw5Es6zBUh9qBCiSPqCpsV0MtV3AK7:XF8wFjJnKl71cVL9louTgoZKK7
Threatray 521 similar samples on MalwareBazaar
TLSH T13FB45AE3B8455298EA795E73712B1C1117741FBA622C205DBACC318D09FE1623EDF86E
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 2b26061e391d2b6c (8 x GuLoader)
Reporter Anonymous
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
239
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
BO353672UH.exe
Verdict:
Malicious activity
Analysis date:
2023-03-28 08:21:43 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/9b4e9dc1-0818-497a-be77-397a8d3bff59

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/378128/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a file
Delayed reading of the file
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/75378/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer guloader overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6422a33380ca4ca1ff59c378/reports/95c9e66b-895d-4002-b681-63d734816908/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/db8531844df91c21008a7e9491568ac304846137a4ba3c30f23f91f7c058cc36
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/b7370a33-30d3-4e77-a563-0772a95ea339
Result
Threat name:
Remcos, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1203260
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Installs a global keyboard hook
Multi AV Scanner detection for submitted file
Opens the same file many times (likely Sandbox evasion)
Sigma detected: Remcos
Snort IDS alert for network traffic
Tries to detect Any.run
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/db8531844df91c21008a7e9491568ac304846137a4ba3c30f23f91f7c058cc36/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Suspicious
First seen:
2023-03-27 16:47:57 UTC
File Type:
PE (Exe)
Extracted files:
38
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3octdbcn7eoccaekp2kjcvukymciiyjxus5dymhsh6i7pqcyzq3a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
cloudeye
Create hunting rule
Similar samples:
04e37487ffb37eae4b2c7afc8d932dd002549c4d6e276a51327de2606dbad9f5
GuLoader
0a83a6c897b43357c341190cc93e0310cc8063f4e569853aba1c912ede95229f
GuLoader
629156764548d3bdbc062de11f6ad819bb0d7d166aac339b04674861df522206
GuLoader
723ff97e6559f6558c288ca693898592a21aab28c003883ca13b81667d7e3aef
GuLoader
7ff9229b5afe787068eeaf3fd2b5e9899560366f11cff76ee2800a042379b884
GuLoader
c627b8bb6c4ea0cf03aa2d209d0ecc53ff9784283328dabd44c1675aef0939c2
GuLoader
d03b9ead3cfc79c7495986f26b97dbe24b0558314a4993f595c80f8817295c48
GuLoader
dc5da53a5e93a588335b6561258d1540ac7d696c633d03de92e72d8e53254234
GuLoader
e07a149d14fc37367e7331342d07dc45aec9ef7bbce780ea636c5d04f6c26f3f
GuLoader
+ 511 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:remcos botnet:cash discovery downloader rat
Link:
https://tria.ge/reports/230328-j8er4ahg83/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks installed software on the system
Checks QEMU agent file
Loads dropped DLL
Guloader,Cloudeye
Remcos
Malware Config
C2 Extraction:
194.5.98.133:1978
Unpacked files
SH256 hash:
ac9dfe3b35ea4b8932536ed7406c29a432976b685cc5322f94ef93df920fede7
MD5 hash:
0063d48afe5a0cdc02833145667b6641
SHA1 hash:
e7eb614805d183ecb1127c62decb1a6be1b4f7a8
Link:
https://www.unpac.me/results/36063abf-2f80-4e7a-b99c-66da67d2ae13/
Parent samples :
5312214b15330113f6eab71565e1e3c7d1ee3b59daa6703c271aaf3b192e6809
02fca6ef5d9d8b1eb29f7ac8ea0573b504ea7f06c215e091791653b40fe1329a
cc53accc69b32c2507210ea70d1d56aa84dbe354a7f79577df180179ea797427
045a7318a9e2e550208c0c7e9fc805068df19fa73823ac3acaa049a46c4045ee
f2a883a0e4b01c72b0f063df3be5a0102e5c8fbaedc39c8d35c632b200599283
dffefbde27442b9095388b1871ffdc101c430b9a814138be4f962328a5b73fde
e0fb60da371912c158861c9660632d58e45cfcff12351cc9e03f497f319eb5de
904f69a4bed3844273cce1676e8920794815af4c1527e560bbc1bc44b5b8457a
SH256 hash:
e8be29cc6f2f5855d97fde10ba53ea12f08aeda929d2088db701f5a1cf46fe1e
MD5 hash:
d88c14e5a9fb8c96aa0e68b43fea0c43
SHA1 hash:
772b7ee55ee1f7bd53c86bd4f219b3b55142508c
Link:
https://www.unpac.me/results/36063abf-2f80-4e7a-b99c-66da67d2ae13/
SH256 hash:
db8531844df91c21008a7e9491568ac304846137a4ba3c30f23f91f7c058cc36
MD5 hash:
88bb26d6b123f29679fcdad414a517c4
SHA1 hash:
da3743a6e2fbf39ee52694a6dcc5bb14ee899249
Link:
https://www.unpac.me/results/36063abf-2f80-4e7a-b99c-66da67d2ae13/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/db8531844df9/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: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.

Malspam

GuLoader

Executable exe db8531844df91c21008a7e9491568ac304846137a4ba3c30f23f91f7c058cc36

(this sample)

  
Dropped by
guloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/378128/

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