MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6619a23606037c409d8a806d59156f73cc1493462da007f59002da7c1a9892e6. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6619a23606037c409d8a806d59156f73cc1493462da007f59002da7c1a9892e6
SHA3-384 hash: 624b0f28c82e506ce144aad97283747bd9a8fa0b22089f40e4e708ff60e2b3cd5babc9ccfb0b5b3c20771a897ca9b8d8
SHA1 hash: beb89dae8af4b84a98beaef798459cfc7c0f9319
MD5 hash: 079b4b40df4e0b815bffd827e27c1d29
humanhash: spring-oxygen-king-seven
File name:Maroc-107.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:359'400 bytes
First seen:2022-09-14 05:40:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (295 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 6144:hpRqb6hM7hWvl01WclRJ8f8VfwQku5TJh9bskkUMJnitIn6cBSYHv:9zGzkubOoI6uSc
TLSH T1B7748ED1F254C8EBE56E41B35C2FB12025869AA990B0D11F66B6771A78F3353209FE0F
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 30f0dcf4d4c0f030 (1 x GuLoader)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Relache Coinhabit Mosset
Issuer:Relache Coinhabit Mosset
Algorithm:sha256WithRSAEncryption
Valid from:2022-04-21T12:38:08Z
Valid to:2025-04-20T12:38:08Z
Serial number: 7896a6c6ab102dd7
Thumbprint Algorithm:SHA256
Thumbprint: 1ed05583e81701f6e111b4b5193d81b032d9bee0e17aca5af79067539a564147
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
371
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/309910/
Detection(s):
SecuriteInfo.com.BackDoor.Siggen2.2488.26461.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Searching for the 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/37616/overview
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
buer overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/632169b5b564f001cc84d4f3/reports/59655b64-2d16-490e-876e-1e4222c99a9c/overview
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/3d91c423-2af1-4acb-9013-e641ba8643e7
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1069995
Signature
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Detected FormBook malware
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Opens the same file many times (likely Sandbox evasion)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Steal Google chrome login data
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: 702527 Sample: Maroc-107.exe Startdate: 14/09/2022 Architecture: WINDOWS Score: 100 56 www.yurinakajima.info 2->56 58 www.v3241.com 2->58 60 20 other IPs or domains 2->60 78 Snort IDS alert for network traffic 2->78 80 Malicious sample detected (through community Yara rule) 2->80 82 Multi AV Scanner detection for dropped file 2->82 84 9 other signatures 2->84 11 Maroc-107.exe 6 41 2->11         started        signatures3 process4 file5 48 C:\Users\user\AppData\Local\...\System.dll, PE32 11->48 dropped 50 C:\...\System.Runtime.InteropServices.dll, PE32+ 11->50 dropped 98 Tries to detect Any.run 11->98 100 Opens the same file many times (likely Sandbox evasion) 11->100 15 Maroc-107.exe 6 11->15         started        signatures6 process7 dnsIp8 68 blog.medicasure.com 79.137.34.21, 443, 49772 OVHFR France 15->68 70 Modifies the context of a thread in another process (thread injection) 15->70 72 Tries to detect Any.run 15->72 74 Maps a DLL or memory area into another process 15->74 76 2 other signatures 15->76 19 explorer.exe 1 6 15->19 injected signatures9 process10 dnsIp11 62 www.unuan.top 119.28.205.75, 49777, 80 TENCENT-NET-AP-CNTencentBuildingKejizhongyiAvenueCN China 19->62 64 www.yurinakajima.info 183.181.97.230, 49776, 80 SAKURA-CSAKURAInternetIncJP Japan 19->64 66 9 other IPs or domains 19->66 42 C:\Users\user\AppData\...\colorcplhxjpij.exe, PE32 19->42 dropped 86 System process connects to network (likely due to code injection or exploit) 19->86 88 Benign windows process drops PE files 19->88 24 cmmon32.exe 1 18 19->24         started        28 colorcplhxjpij.exe 13 19->28         started        file12 signatures13 process14 file15 44 C:\Users\user\AppData\...\04Alogrv.ini, data 24->44 dropped 46 C:\Users\user\AppData\...\04Alogri.ini, data 24->46 dropped 90 Detected FormBook malware 24->90 92 Tries to steal Mail credentials (via file / registry access) 24->92 94 Tries to harvest and steal browser information (history, passwords, etc) 24->94 96 4 other signatures 24->96 30 cmd.exe 2 24->30         started        34 firefox.exe 1 24->34         started        36 cmd.exe 1 24->36         started        signatures16 process17 file18 52 C:\Users\user\AppData\Local\Temp\DB1, SQLite 30->52 dropped 102 Tries to harvest and steal browser information (history, passwords, etc) 30->102 38 conhost.exe 30->38         started        54 C:\Users\user\AppData\...\04Alogrf.ini, data 34->54 dropped 40 conhost.exe 36->40         started        signatures19 process20
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6619a23606037c409d8a806d59156f73cc1493462da007f59002da7c1a9892e6/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2022-09-13 08:54:41 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
15 of 25 (60.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mym2enqgan6ebhmkqbwvsflpopgbje2gfwqap5mqalnhyguyslta._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
cloudeye
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Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader discovery downloader
Link:
https://tria.ge/reports/220914-gde39sdbbm/
Behaviour
Enumerates physical storage devices
Drops file in Windows directory
Checks installed software on the system
Loads dropped DLL
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8cf5e9c7-360e-425b-bb10-c7de633b6b77
Unpacked files
SH256 hash:
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 hash:
3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 hash:
fe582246792774c2c9dd15639ffa0aca90d6fd0b
Link:
https://www.unpac.me/results/1d88a1e8-8a6f-46c5-8f21-2cddbcb3f124/
SH256 hash:
6619a23606037c409d8a806d59156f73cc1493462da007f59002da7c1a9892e6
MD5 hash:
079b4b40df4e0b815bffd827e27c1d29
SHA1 hash:
beb89dae8af4b84a98beaef798459cfc7c0f9319
Link:
https://www.unpac.me/results/1d88a1e8-8a6f-46c5-8f21-2cddbcb3f124/
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/6619a23606037c409d8a806d59156f73cc1493462da007f59002da7c1a9892e6

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 6619a23606037c409d8a806d59156f73cc1493462da007f59002da7c1a9892e6

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/309910/

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