MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6578a27c9a339ad280d54a724c86f4c5a864fcd1da54b732fbbce40d861447da. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6578a27c9a339ad280d54a724c86f4c5a864fcd1da54b732fbbce40d861447da
SHA3-384 hash: feb1337bcdb39f1130cc4ed527359967b9c3d917d9d1ec441459b5f27bcd9a0cc35efd45fa032ef2ed5a31ac8a114b01
SHA1 hash: 4d49fa464c6a3529f64ece36c2e8a40be3147a74
MD5 hash: bc1a9800f4c13bfcc141d8a76dc1080e
humanhash: carpet-music-vegan-october
File name:6578a27c9a339ad280d54a724c86f4c5a864fcd1da54b732fbbce40d861447da
Download: download sample
Signature GuLoader
Create hunting rule
File size:651'744 bytes
First seen:2023-03-03 12:37:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 57e98d9a5a72c8d7ad8fb7a6a58b3daf (60 x GuLoader, 20 x AZORult, 12 x RemcosRAT)
ssdeep 12288:/f1Pc3O4JEYX3z2PrQbikTFH8oNTY8SIsH699zgUtQ:m3O4jqrEH8oNMZIXzQ
Threatray 926 similar samples on MalwareBazaar
TLSH T1B6D4F045B705C977C92A02738DABD72827B4FE09554E4F0B324CB65AADB32DE381A385
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)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:springbalsaminens
Issuer:springbalsaminens
Algorithm:sha256WithRSAEncryption
Valid from:2022-10-09T04:22:44Z
Valid to:2025-10-08T04:22:44Z
Serial number: -28cff15e01113214
Thumbprint Algorithm:SHA256
Thumbprint: ae4bb5e33f4c1b5fec5f6f3517ff3821e42961c997791fe2c4def3d9ca7d37aa
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
213
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
6578a27c9a339ad280d54a724c86f4c5a864fcd1da54b732fbbce40d861447da
Verdict:
Malicious activity
Analysis date:
2023-03-03 12:37:23 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/902b1fd0-1228-4cb4-a4d4-1ff540ea3642

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/371371/
Detection(s):
SecuriteInfo.com.Trojan.Inject.31120.591.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.PWS.Banker1.30494.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file in the %AppData% subdirectories
Delayed reading of the file
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer guloader overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6401ea2c47dff094b528221c/reports/5f8d09ca-04a3-4205-bfd2-80f6760e7b46/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/6578a27c9a339ad280d54a724c86f4c5a864fcd1da54b732fbbce40d861447da
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/dd441ca4-d679-4a06-8894-4be5508588d2
Result
Threat name:
Nanocore, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1186498
Signature
Detected Nanocore Rat
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
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)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 12000 Sample: 5Ieb5xJWO6.exe Startdate: 03/03/2023 Architecture: WINDOWS Score: 100 42 googlehosted.l.googleusercontent.com 2->42 44 drive.google.com 2->44 46 doc-04-ac-docs.googleusercontent.com 2->46 62 Snort IDS alert for network traffic 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Multi AV Scanner detection for dropped file 2->66 68 7 other signatures 2->68 9 5Ieb5xJWO6.exe 1 28 2->9         started        13 CasPol.exe 4 2->13         started        signatures3 process4 file5 36 C:\Users\user\AppData\...\showauth.dat, PE32+ 9->36 dropped 38 C:\Users\user\AppData\...\ConsolePauser.exe, PE32 9->38 dropped 40 C:\Users\user\AppData\Local\...\System.dll, PE32 9->40 dropped 70 Writes to foreign memory regions 9->70 72 Tries to detect Any.run 9->72 74 Hides threads from debuggers 9->74 15 CasPol.exe 1 22 9->15         started        20 CasPol.exe 9->20         started        22 conhost.exe 13->22         started        signatures6 process7 dnsIp8 48 pepe7.duckdns.org 194.147.140.227, 2456, 49813 PTPEU unknown 15->48 50 googlehosted.l.googleusercontent.com 142.250.185.97, 443, 49812 GOOGLEUS United States 15->50 52 drive.google.com 172.217.23.110, 443, 49811 GOOGLEUS United States 15->52 30 C:\Users\user\AppData\Local\...\Cymbiform.exe, PE32 15->30 dropped 32 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 15->32 dropped 34 C:\Users\user\AppData\Local\...\tmp46EA.tmp, XML 15->34 dropped 54 Tries to detect Any.run 15->54 56 Hides threads from debuggers 15->56 58 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->58 24 schtasks.exe 1 15->24         started        26 conhost.exe 15->26         started        60 Uses schtasks.exe or at.exe to add and modify task schedules 20->60 file9 signatures10 process11 process12 28 conhost.exe 24->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6578a27c9a339ad280d54a724c86f4c5a864fcd1da54b732fbbce40d861447da/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Suspicious
First seen:
2023-02-14 02:21:05 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
15 of 25 (60.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mv4ke7e2gonnfagvjjzezbxuywugj7gr3jklomx3xtsa3bqui7na._file
Verdict:
malicious
Similar samples:
0cb6636748ff6a60ebf1a4644a7b4c877f8a19edd8c7a2eac10b34d1bd7cbfbf
GuLoader
199bd66bf9f7b299ebf9068feb2e8648404097e26f86cabc5462973769d24df5
GuLoader
482f10e5f1825368c6cdacf482febf39ed6d035ce866aded813d18890cf86dca
GuLoader
dfee1fc781f6414edcd5fe23fd87e05ff7940ff6f02c409e5f8ba9bbd34b0c04
GuLoader
ea3c63e01dc18acb8940dbbe5bec6c3cdcb6c117b6a213b9e7e02c11caeabee0
GuLoader
ef66ea0bcee19ccd3d2771a170ff218a3e43b27f1b18f24e08685cb4d3fe053a
GuLoader
f2a42302b9c4f3e6c1e2e5d15dfa09cb41aad80ebc13678c4a412f77d4141ca0
GuLoader
+ 916 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
persistence
Link:
https://tria.ge/reports/230303-pt2wzahe23/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Loads dropped DLL
Unpacked files
SH256 hash:
a1390a78533c47e55cc364e97af431117126d04a7faed49390210ea3e89dd0e1
MD5 hash:
fbe295e5a1acfbd0a6271898f885fe6a
SHA1 hash:
d6d205922e61635472efb13c2bb92c9ac6cb96da
Link:
https://www.unpac.me/results/eaad61b6-b316-4eb0-95f9-b38e43970f0c/
SH256 hash:
6c7d6974e13ca3387fc32d52b6ddf48daab0b49bbaa4c08737f805ea4faf94a2
MD5 hash:
d8346645a9ec58108a21af6f6cdfd2a1
SHA1 hash:
920a0cad9c993f52ef01d08f67cac99ac8832be9
Link:
https://www.unpac.me/results/eaad61b6-b316-4eb0-95f9-b38e43970f0c/
SH256 hash:
6578a27c9a339ad280d54a724c86f4c5a864fcd1da54b732fbbce40d861447da
MD5 hash:
bc1a9800f4c13bfcc141d8a76dc1080e
SHA1 hash:
4d49fa464c6a3529f64ece36c2e8a40be3147a74
Link:
https://www.unpac.me/results/eaad61b6-b316-4eb0-95f9-b38e43970f0c/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.02
Link:
https://yomi.yoroi.company/submissions/6578a27c9a339ad280d54a724c86f4c5a864fcd1da54b732fbbce40d861447da

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

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/371371/

Comments