MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e2f347dbc5b3cf28a213b4c35d5c17d87658a065d28dc818b34b403ab0e0e67e. 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 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e2f347dbc5b3cf28a213b4c35d5c17d87658a065d28dc818b34b403ab0e0e67e
SHA3-384 hash: f77251e4aa6f68d0e4748904ffbc2d363d583347292c04a27a4a31a3deacd275e878affc83c69e3043f1baacc5405889
SHA1 hash: 6e7fa22dcf0b9321203600bdbcb788d8b5fe83e6
MD5 hash: c8007c3ce22859007c4678adeb600457
humanhash: burger-arizona-indigo-florida
File name:c8007c3ce22859007c4678adeb600457
Download: download sample
Signature GuLoader
Create hunting rule
File size:581'576 bytes
First seen:2023-06-01 06:04:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (310 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 6144:sBeZKbBMMlpM43J4KjvPZ3MqPHkSghgWK7Kp1QFDNPmU/:XaBFpMOJtDB3Lv8xfeJmW
TLSH T17DC448122119FC13CC8D6DF2785BD9DC8D635D7449BC027AEED23A192BB0F5EAB68190
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 e224f4f8e4f4dac2 (1 x GuLoader)
Reporter zbetcheckin
Tags:32 exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-01-15T11:57:55Z
Valid to:2026-01-14T11:57:55Z
Serial number: 7360741118288647d77a06d015f8285199ad6788
Thumbprint Algorithm:SHA256
Thumbprint: e93e7850dc31050123cf8d32b60c1272fc901c28f0a9a6f9f3b083c78d0b08a3
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
262
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
PO-112030087.xls
Verdict:
Malicious activity
Analysis date:
2023-06-01 05:22:51 UTC
Tags:
opendir exploit cve-2017-11882 loader guloader
Link:
https://app.any.run/tasks/73c225cd-836f-4d00-98b7-d7e8a7f5a937

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/394302/
Detection(s):
SecuriteInfo.com.Mal.Generic-S.31020.16397.20236.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% subdirectories
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/88898/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer lolbin overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6478350f8c539ae218a09452/reports/2a5ff988-07f0-4a07-996a-4931cdb4edbb/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/e2f347dbc5b3cf28a213b4c35d5c17d87658a065d28dc818b34b403ab0e0e67e
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/25222bf8-adc9-4288-bb52-6de4136ed99c
Result
Threat name:
GuLoader, SmokeLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1246593
Signature
Antivirus detection for URL or domain
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Checks if the current machine is a virtual machine (disk enumeration)
Creates a thread in another existing process (thread injection)
Deletes itself after installation
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects code into the Windows Explorer (explorer.exe)
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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
Yara detected SmokeLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 879613 Sample: m8U0PVWN4Z.exe Startdate: 01/06/2023 Architecture: WINDOWS Score: 100 53 dropbuyinc.ga 2->53 65 Snort IDS alert for network traffic 2->65 67 Multi AV Scanner detection for domain / URL 2->67 69 Found malware configuration 2->69 71 7 other signatures 2->71 9 m8U0PVWN4Z.exe 1 33 2->9         started        13 tjfcsug 19 2->13         started        15 tjfcsug 2->15         started        signatures3 process4 file5 39 C:\Users\user\AppData\Local\...\System.dll, PE32 9->39 dropped 41 C:\Users\user\AppData\Local\...\totype.dll, PE32+ 9->41 dropped 73 Tries to detect Any.run 9->73 17 m8U0PVWN4Z.exe 6 9->17         started        43 C:\Users\user\AppData\Local\...\System.dll, PE32 13->43 dropped 75 Multi AV Scanner detection for dropped file 13->75 21 tjfcsug 13->21         started        45 C:\Users\user\AppData\Local\...\System.dll, PE32 15->45 dropped 23 tjfcsug 15->23         started        signatures6 process7 dnsIp8 51 198.46.132.184, 49751, 49754, 49756 AS-COLOCROSSINGUS United States 17->51 57 Tries to detect Any.run 17->57 59 Maps a DLL or memory area into another process 17->59 61 Checks if the current machine is a virtual machine (disk enumeration) 17->61 25 explorer.exe 3 4 17->25 injected 63 Creates a thread in another existing process (thread injection) 21->63 signatures9 process10 dnsIp11 55 dropbuyinc.ga 80.66.64.187, 49752, 49753, 80 VAD-SRL-AS1MD Russian Federation 25->55 47 C:\Users\user\AppData\Roaming\tjfcsug, PE32 25->47 dropped 49 C:\Users\user\...\tjfcsug:Zone.Identifier, ASCII 25->49 dropped 77 Benign windows process drops PE files 25->77 79 Injects code into the Windows Explorer (explorer.exe) 25->79 81 Deletes itself after installation 25->81 83 2 other signatures 25->83 30 explorer.exe 16 25->30         started        33 explorer.exe 25->33         started        35 explorer.exe 25->35         started        37 6 other processes 25->37 file12 signatures13 process14 signatures15 85 System process connects to network (likely due to code injection or exploit) 30->85 87 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 30->87 89 Tries to steal Mail credentials (via file / registry access) 30->89 91 Tries to harvest and steal browser information (history, passwords, etc) 33->91
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e2f347dbc5b3cf28a213b4c35d5c17d87658a065d28dc818b34b403ab0e0e67e/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-06-01 06:05:05 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4lzupw6fwphsriqtwtbv2xax3b3fridf2kg4qgftjnadvmha4z7a._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Result
Malware family:
smokeloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:smokeloader backdoor collection discovery downloader trojan
Link:
https://tria.ge/reports/230601-gs6jrsdd4t/
Behaviour
Checks SCSI registry key(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Checks installed software on the system
Checks QEMU agent file
Loads dropped DLL
Guloader,Cloudeye
SmokeLoader
Malware Config
C2 Extraction:
http://dropbuyinc.ga/
http://omacrestinc.ga/
Unpacked files
SH256 hash:
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 hash:
3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 hash:
fe582246792774c2c9dd15639ffa0aca90d6fd0b
Link:
https://www.unpac.me/results/1d5c92f3-b9d7-4cd5-91aa-02a7696be766/
SH256 hash:
e2f347dbc5b3cf28a213b4c35d5c17d87658a065d28dc818b34b403ab0e0e67e
MD5 hash:
c8007c3ce22859007c4678adeb600457
SHA1 hash:
6e7fa22dcf0b9321203600bdbcb788d8b5fe83e6
Link:
https://www.unpac.me/results/1d5c92f3-b9d7-4cd5-91aa-02a7696be766/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e2f347dbc5b3/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/e2f347dbc5b3cf28a213b4c35d5c17d87658a065d28dc818b34b403ab0e0e67e

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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:SUSP_NullSoftInst_Combo_Oct20_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects suspicious NullSoft Installer combination with common Copyright strings
Reference:https://twitter.com/malwrhunterteam/status/1313023627177193472

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

GuLoader

Executable exe e2f347dbc5b3cf28a213b4c35d5c17d87658a065d28dc818b34b403ab0e0e67e

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/394302/
  
URLhaus
https://urlhaus.abuse.ch/url/2648521/

Comments


Avatar
zbet commented on 2023-06-01 06:04:18 UTC

url : hxxp://198.46.132.184/80/hkcmd.exe