MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a47f1b1a2995865a081e270569e3cb0857d3af3759c2e06b72e3f418e9611a87. 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


BluStealer


Vendor detections: 10


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

SHA256 hash: a47f1b1a2995865a081e270569e3cb0857d3af3759c2e06b72e3f418e9611a87
SHA3-384 hash: 2926bb35fb7684567db7b1669e695d19273ef61c591ab73f3ebb1a89d6572328f99b4687bff3b00749a7198ac4450990
SHA1 hash: b0071008c3ae769433c6c71acd49c80a4b5a853d
MD5 hash: 208b8885063f4562e1e181c63f155bd1
humanhash: robert-louisiana-aspen-item
File name:RFQ 10050395.exe
Download: download sample
Signature BluStealer
Create hunting rule
File size:750'592 bytes
First seen:2022-06-23 06:00:20 UTC
Last seen:2022-06-23 06:55:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'454 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:2oskPRxliW1b0LxY7GM2NPdqysk6iQrWE8Y8Ll1ytjkJhLIsbpGNjFLSlaE3y69U:2oskPRrhbi22hdqyMWEPgylkJhbbpalp
TLSH T1A8F4238953F4C730F1F94BF940EE12192B72E504A0E4E61BBA6531CEEDC2BB04895E5B
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 02616868e0e4e800 (8 x Formbook, 7 x Loki, 4 x AgentTesla)
Reporter GovCERT_CH
Tags:BluStealer exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
224
Origin country :
n/a
Vendor Threat Intelligence
Detection:
A310Logger
Create hunting rule
Link:
https://www.capesandbox.com/analysis/282544/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Reading critical registry keys
Creating a file in the %AppData% subdirectories
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/62b401831e58e5586602e48e/reports/ae98056e-bbbc-46bb-995a-b51b2eae674d/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9b5717a6-f993-4a47-a5f6-fe4108a9ee05
Result
Threat name:
BluStealer, ThunderFox Stealer, a310Logg
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1018436
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Allocates memory in foreign processes
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
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)
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected a310Logger
Yara detected AntiVM3
Yara detected BluStealer
Yara detected ThunderFox Stealer
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a47f1b1a2995865a081e270569e3cb0857d3af3759c2e06b72e3f418e9611a87/
Threat name:
ByteCode-MSIL.Trojan.BluStealer
Create hunting rule
Status:
Malicious
First seen:
2022-06-23 02:08:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ur7rwgrjswdfuca6e4cwty6lbbl5hlzxlhboa23s4p2br2lbdkdq._file
Verdict:
malicious
Result
Malware family:
blustealer
Create hunting rule
Score:
  10/10
Tags:
family:blustealer collection stealer
Link:
https://tria.ge/reports/220623-gqwa1sefh4/
Behaviour
Script User-Agent
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
BluStealer
Malware Config
C2 Extraction:
https://api.telegram.org/bot5330579892:AAHDIOXrD-d-pMU_JI4pPczBI962-9fokRs/sendMessage?chat_id=1494890429
Unpacked files
SH256 hash:
d78f2e24c10188e0516846ca13b0bb24c8c8a6f7f51c0bf9152d1813cb49d802
MD5 hash:
3f773ce42b55569f550c66338bd89eba
SHA1 hash:
02c8d9213f59b1493b008a83b968632ffc5147f1
Link:
https://www.unpac.me/results/47e3c050-435b-4046-b94c-9e43e5a3b0d6/
SH256 hash:
87577e6c69af07ba0e6383a2a152b59a39d6b336631ce4baa250bd9f8adce03d
MD5 hash:
9b17d560e68eff0da30f79b3c391c9a3
SHA1 hash:
5ceda263b1ea13401f652c709dd884d58945fe57
Link:
https://www.unpac.me/results/47e3c050-435b-4046-b94c-9e43e5a3b0d6/
SH256 hash:
301a91d94e0a9cb54cd93c673de737913dd3171b35c12a183d165da831cec788
MD5 hash:
cd3047f96dc1b887c0d85ed9c742bc10
SHA1 hash:
85e0d57e231b893bacde71229ee5bd99404ab0da
Link:
https://www.unpac.me/results/47e3c050-435b-4046-b94c-9e43e5a3b0d6/
SH256 hash:
0cb6aef1fa57d11408e47ae071485ef8f48c2982997b8d74b47a4151d85b978c
MD5 hash:
843aa6edf83bff7b61c6a5369ef41e95
SHA1 hash:
d1bfeec8eaac9a1dacf2f7062ce964d8e7d77085
Link:
https://www.unpac.me/results/47e3c050-435b-4046-b94c-9e43e5a3b0d6/
SH256 hash:
1b6c7974feba398b4f9bfd5fa56a6b63459f9a369ec9f2f7dbc91b53495788d6
MD5 hash:
109cf5dc53823f1f63ff65902da297ba
SHA1 hash:
f6646dbe40ce33a23da36cf4bb3d53456e49d367
Link:
https://www.unpac.me/results/47e3c050-435b-4046-b94c-9e43e5a3b0d6/
SH256 hash:
0d5e6f917446c6a4d82792ded65d92c4ca0ed6fbb1654a5434f8dc7ad790d786
MD5 hash:
b7073c23d4d6ce99bfdfc13a68a8841f
SHA1 hash:
edfd37bf8273fdb59ef33a02cb4be9e198585211
Link:
https://www.unpac.me/results/47e3c050-435b-4046-b94c-9e43e5a3b0d6/
SH256 hash:
fc9bb9746aaa4e07944b2c1338d26ac852531a6e6c97e98f6a56202d27ff607c
MD5 hash:
d2ec533f8b40a8224d79c87c2291f943
SHA1 hash:
f305fa4c5c8525e853fbdbcf5c8cedad9ba08fd2
Link:
https://www.unpac.me/results/47e3c050-435b-4046-b94c-9e43e5a3b0d6/
SH256 hash:
a47f1b1a2995865a081e270569e3cb0857d3af3759c2e06b72e3f418e9611a87
MD5 hash:
208b8885063f4562e1e181c63f155bd1
SHA1 hash:
b0071008c3ae769433c6c71acd49c80a4b5a853d
Link:
https://www.unpac.me/results/47e3c050-435b-4046-b94c-9e43e5a3b0d6/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a47f1b1a2995/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.61
Link:
https://yomi.yoroi.company/submissions/a47f1b1a2995865a081e270569e3cb0857d3af3759c2e06b72e3f418e9611a87

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_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

BluStealer

Executable exe a47f1b1a2995865a081e270569e3cb0857d3af3759c2e06b72e3f418e9611a87

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/282544/

Comments