MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fc423870796dff42517d1695ac87a45b54e52f18a76184ea31f64ec778f80348. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fc423870796dff42517d1695ac87a45b54e52f18a76184ea31f64ec778f80348
SHA3-384 hash: 05f5c4921e7a45cd0d6593ce9c62e77872a8d6f4df8755ba6486d2cef1d2b0dfd730b1fb3d5ecb93dce6d84667e93f39
SHA1 hash: 66a6643ee7961e6785350e166e9d44ef0ee637c1
MD5 hash: 614ef8a46ff7b0f353b6ce2540c30d8e
humanhash: hotel-lithium-cup-maryland
File name:IBM_Linixe.bin
Download: download sample
Signature GuLoader
Create hunting rule
File size:514'376 bytes
First seen:2023-07-27 11:48:06 UTC
Last seen:2023-07-27 11:57:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e2a592076b17ef8bfb48b7e03965a3fc (388 x GuLoader, 59 x RemcosRAT, 44 x VIPKeylogger)
ssdeep 12288:RcXBjshx9i0l9xWTKXH34GzOCAmYNdCi3aEAg0f0BpvmcUlxMUJ:RSBjaMGv3zOCaRsgkCuPIG
Threatray 1 similar samples on MalwareBazaar
TLSH T142B401C6F9009566EC6A87712A37DC320A03BD7DA5701E0C2BDE3DBB3EBB5925825417
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 d4c4c4d8ccd4f0c4 (63 x Formbook, 23 x AgentTesla, 8 x RemcosRAT)
Reporter JAMESWT_WT
Tags:103-16-215-196 192-3-243-146 exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-11-09T03:34:22Z
Valid to:2025-11-08T03:34:22Z
Serial number: 373af4bcc6b632ef937d7bde0171e2416e77e74e
Thumbprint Algorithm:SHA256
Thumbprint: 82f39809a04eaddb217717ac6aefe3fc5856f8af239714715cc40e05a5217a74
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
274
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
Статус заказов SLB 25.07.23.xls
Verdict:
Malicious activity
Analysis date:
2023-07-26 09:45:45 UTC
Tags:
exploit cve-2017-11882 loader guloader
Link:
https://app.any.run/tasks/fbd6671d-0242-47ed-9ffe-93a546045e85

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/434773/
Detection(s):
SecuriteInfo.com.FileRepMalware.13477.24289.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control lolbin masquerade overlay packed shell32
Link:
https://www.filescan.io/uploads/64c259af80fc6008e92171e7/reports/92e1962e-5b1f-4af7-9a4a-574c28d42319/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/fc423870796dff42517d1695ac87a45b54e52f18a76184ea31f64ec778f80348
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/eed0617c-735e-4c3e-9913-183a2a555f64
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1281105
Signature
Antivirus detection for URL or domain
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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 submitted file
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: 1281105 Sample: IBM_Linixe.bin.exe Startdate: 27/07/2023 Architecture: WINDOWS Score: 100 30 www.zealously-snatch.shop 2->30 32 www.xn--ciqpnj85djnvt4n.com 2->32 34 19 other IPs or domains 2->34 44 Snort IDS alert for network traffic 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for URL or domain 2->48 50 5 other signatures 2->50 8 IBM_Linixe.bin.exe 1 28 2->8         started        signatures3 process4 file5 28 C:\Users\user\AppData\Local\...\System.dll, PE32 8->28 dropped 54 Tries to detect Any.run 8->54 12 mstsc.exe 13 8->12         started        15 IBM_Linixe.bin.exe 6 8->15         started        18 autofmt.exe 8->18         started        signatures6 process7 dnsIp8 56 Tries to steal Mail credentials (via file / registry access) 12->56 58 Tries to harvest and steal browser information (history, passwords, etc) 12->58 60 Writes to foreign memory regions 12->60 68 3 other signatures 12->68 20 explorer.exe 2 1 12->20 injected 24 firefox.exe 12->24         started        26 RAVCpl64.exe 12->26 injected 42 gfemaroc.com 174.142.95.85, 443, 50287 IWEB-ASCA Canada 15->42 62 Tries to detect Any.run 15->62 64 Maps a DLL or memory area into another process 15->64 66 Sample uses process hollowing technique 15->66 signatures9 process10 dnsIp11 36 www.fumart.info 203.161.55.148, 50310, 50311, 50312 VNPT-AS-VNVNPTCorpVN Malaysia 20->36 38 www.baltools.com 216.40.34.41, 50332, 50333, 50334 TUCOWSCA Canada 20->38 40 13 other IPs or domains 20->40 52 System process connects to network (likely due to code injection or exploit) 20->52 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fc423870796dff42517d1695ac87a45b54e52f18a76184ea31f64ec778f80348/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-07-26 11:01:45 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7rbdq4dznx7ueul5c2k2zb5elnkoklyyu5qyj2rr6zhmo6hyanea._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
1de623c954d1ff0415969724740aa5809b0745c0d07da5d1549a54816745b751
GuLoader
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/230727-ny1c9sec96/
Behaviour
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Loads dropped DLL
Unpacked files
SH256 hash:
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
MD5 hash:
17ed1c86bd67e78ade4712be48a7d2bd
SHA1 hash:
1cc9fe86d6d6030b4dae45ecddce5907991c01a0
Link:
https://www.unpac.me/results/71ffaa4a-3c6d-47a2-adc1-341d251fa5b5/
SH256 hash:
fc423870796dff42517d1695ac87a45b54e52f18a76184ea31f64ec778f80348
MD5 hash:
614ef8a46ff7b0f353b6ce2540c30d8e
SHA1 hash:
66a6643ee7961e6785350e166e9d44ef0ee637c1
Link:
https://www.unpac.me/results/71ffaa4a-3c6d-47a2-adc1-341d251fa5b5/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
GuLoader
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/fc423870796dff42517d1695ac87a45b54e52f18a76184ea31f64ec778f80348

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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_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 fc423870796dff42517d1695ac87a45b54e52f18a76184ea31f64ec778f80348

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/434773/
  
URLhaus
https://urlhaus.abuse.ch/url/2690946/
  
Delivery method
Distributed via web download

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