MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 03c1a90911d6860dc5c60861688bc5c16ea549cad3032aede84bc394d300018c. 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 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 03c1a90911d6860dc5c60861688bc5c16ea549cad3032aede84bc394d300018c
SHA3-384 hash: 31d9704bce1befe88606573ba4d1eb02139021750189ecff0333443aeea34bf8e6c7c1c3f3b57f762b8ef16e2085a72d
SHA1 hash: 0438f96068fb4f0ab0ec4089a225785b88585c2f
MD5 hash: 7339f323191432260e5a33cfd681adec
humanhash: cup-mississippi-hotel-oxygen
File name:7339f323191432260e5a33cfd681adec
Download: download sample
Signature GuLoader
Create hunting rule
File size:246'072 bytes
First seen:2023-06-06 09:37:27 UTC
Last seen:2023-06-06 11:39:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e9c0657252137ac61c1eeeba4c021000 (53 x GuLoader, 26 x RedLineStealer, 17 x AgentTesla)
ssdeep 6144:t6dN2GppeQjMB57ntD4n2J2obmBPoVscYvAKdu:I2GpXjklnun2JGxoVs35c
Threatray 714 similar samples on MalwareBazaar
TLSH T1F734126200E284FBE42643F54E7677B9F3B0EF1D0AA1564F5B506BBB99112C0C96E90E
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 04cedaa6b4d2d200 (1 x GuLoader)
Reporter zbetcheckin
Tags:32 exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-05-16T08:59:56Z
Valid to:2026-05-15T08:59:56Z
Serial number: 75e2cfbb74377dd68e96f63a2348cd504a4bcf2b
Thumbprint Algorithm:SHA256
Thumbprint: cdd37262f6b29f6f79bb58a0f6a762eb1acfbc52297840f82e18422217cd2f34
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
276
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
6b1cb681b8aaef4da5d19b21d9c4033f
Verdict:
Malicious activity
Analysis date:
2023-06-06 09:38:23 UTC
Tags:
opendir exploit cve-2017-11882 loader
Link:
https://app.any.run/tasks/b2d9da1d-7568-49f2-bc5d-67f1d129ad13

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/396013/
Detection(s):
SecuriteInfo.com.HEUR.28472.28218.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/89584/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer lolbin overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/647efe7bdc9ec688ad93ee36/reports/213c87c3-7af2-4f11-8829-15872446e89d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/03c1a90911d6860dc5c60861688bc5c16ea549cad3032aede84bc394d300018c
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/f91c1727-e748-4970-a55d-d134d01d7b0b
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1249443
Signature
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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 steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 882463 Sample: RHlXQuM27O.exe Startdate: 06/06/2023 Architecture: WINDOWS Score: 100 34 www.zservers.xyz 2->34 36 yoursocialpost.com 2->36 38 24 other IPs or domains 2->38 56 Snort IDS alert for network traffic 2->56 58 Multi AV Scanner detection for domain / URL 2->58 60 Malicious sample detected (through community Yara rule) 2->60 64 5 other signatures 2->64 11 RHlXQuM27O.exe 22 2->11         started        signatures3 62 Performs DNS queries to domains with low reputation 34->62 process4 file5 32 C:\Users\user\AppData\Local\...\System.dll, PE32 11->32 dropped 76 Tries to detect Any.run 11->76 15 RHlXQuM27O.exe 6 11->15         started        signatures6 process7 dnsIp8 46 107.172.148.208, 50108, 80 AS-COLOCROSSINGUS United States 15->46 48 Modifies the context of a thread in another process (thread injection) 15->48 50 Tries to detect Any.run 15->50 52 Maps a DLL or memory area into another process 15->52 54 2 other signatures 15->54 19 RAVCpl64.exe 15->19 injected signatures9 process10 process11 21 raserver.exe 13 19->21         started        signatures12 66 Tries to steal Mail credentials (via file / registry access) 21->66 68 Tries to harvest and steal browser information (history, passwords, etc) 21->68 70 Writes to foreign memory regions 21->70 72 3 other signatures 21->72 24 explorer.exe 4 1 21->24 injected 28 firefox.exe 21->28         started        process13 dnsIp14 40 islaenergetica.com 192.185.16.162, 50162, 50163, 50164 UNIFIEDLAYER-AS-1US United States 24->40 42 yoursocialpost.com 192.185.39.31, 50141, 50142, 50143 UNIFIEDLAYER-AS-1US United States 24->42 44 10 other IPs or domains 24->44 74 System process connects to network (likely due to code injection or exploit) 24->74 30 WerFault.exe 4 28->30         started        signatures15 process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/03c1a90911d6860dc5c60861688bc5c16ea549cad3032aede84bc394d300018c/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-06-06 09:38:06 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
15 of 23 (65.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=apa2scir22da3rogbbqwrc6fyfxkksok2mbsv3pijpbzjuyaagga._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
051101f45d03dac4583297cce0d708af562dedfa085b3d9dcfea40be2083e7ab
GuLoader
1769a8993a876094f9a4a9a7ca17ac3d669279178e32c097a3346825f982a2b1
GuLoader
30efd997c49aae97766539c72d72529b06f1e8522ea84e71758cde4ed1846921
GuLoader
529041b4abb84d9d85f97eb0a6fa6e26a5bf8c9f900316430134df6ce7a5a6ff
GuLoader
7d6e9247de0527fa4c0939c4f6e6726a35cb5f39492a7aeab5614ac1ab29b294
GuLoader
9b77dffb83a26f126a334f4dd9de9c8a21802a1b05de3067584ebfa25826f9fa
GuLoader
a2b5ddc4640236c4a5e09ae3418a1243d2ab37fc787999f8a3f8a3ec1f7deece
GuLoader
a88caf11b01cea311aca13b6e757a8974d5033e1acb8749b9d1951ed0d93d44c
GuLoader
ae7a2eab74a6dbeaa780094a1885f588405f0f8eda83910f14e22759d1f1b7aa
GuLoader
ec27e95180289cd7ca8ebfafc4a1ec973448dcda09892716324966ac95ce4a87
GuLoader
+ 704 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/230606-ll2pfsde7t/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
ac9dfe3b35ea4b8932536ed7406c29a432976b685cc5322f94ef93df920fede7
MD5 hash:
0063d48afe5a0cdc02833145667b6641
SHA1 hash:
e7eb614805d183ecb1127c62decb1a6be1b4f7a8
Link:
https://www.unpac.me/results/e5bfb55e-58d6-4320-b2cc-9e779ee6fd23/
Parent samples :
5312214b15330113f6eab71565e1e3c7d1ee3b59daa6703c271aaf3b192e6809
02fca6ef5d9d8b1eb29f7ac8ea0573b504ea7f06c215e091791653b40fe1329a
cc53accc69b32c2507210ea70d1d56aa84dbe354a7f79577df180179ea797427
045a7318a9e2e550208c0c7e9fc805068df19fa73823ac3acaa049a46c4045ee
f2a883a0e4b01c72b0f063df3be5a0102e5c8fbaedc39c8d35c632b200599283
dffefbde27442b9095388b1871ffdc101c430b9a814138be4f962328a5b73fde
e0fb60da371912c158861c9660632d58e45cfcff12351cc9e03f497f319eb5de
904f69a4bed3844273cce1676e8920794815af4c1527e560bbc1bc44b5b8457a
SH256 hash:
03c1a90911d6860dc5c60861688bc5c16ea549cad3032aede84bc394d300018c
MD5 hash:
7339f323191432260e5a33cfd681adec
SHA1 hash:
0438f96068fb4f0ab0ec4089a225785b88585c2f
Link:
https://www.unpac.me/results/e5bfb55e-58d6-4320-b2cc-9e779ee6fd23/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/03c1a90911d6/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/03c1a90911d6860dc5c60861688bc5c16ea549cad3032aede84bc394d300018c

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.

Web download

GuLoader

Executable exe 03c1a90911d6860dc5c60861688bc5c16ea549cad3032aede84bc394d300018c

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2653705/
Cape
Cape
https://www.capesandbox.com/analysis/396013/

Comments


Avatar
zbet commented on 2023-06-06 09:37:28 UTC

url : hxxp://141.94.149.125/googleCloud/wininit.exe