MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bef5258875c55fb1f312ecb27d8263702d778cbeed2c0ab5ec5b2da330b43ed7. 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


MarsStealer


Vendor detections: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bef5258875c55fb1f312ecb27d8263702d778cbeed2c0ab5ec5b2da330b43ed7
SHA3-384 hash: cad82f9d9567feba2f2791c251f15c4a4b30ba307f8b3926e7a8f7111c7c82dec08d7db75926024cbae0de92a0586079
SHA1 hash: f381596687f0ab7b171d80db99be6c216b503f5b
MD5 hash: f1baeb534b417446eb77070d7d54df24
humanhash: red-georgia-black-glucose
File name:ungziped_file
Download: download sample
Signature MarsStealer
Create hunting rule
File size:195'584 bytes
First seen:2022-12-12 08:45:45 UTC
Last seen:2022-12-19 08:38:34 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 1536:d0qQn5JND7oZdCVxlEaY3ORX33333y3KiWVR5xjFZYiASre9qIo2y/:d07n57vm2Ea33333y3ugc2y/
Threatray 1'561 similar samples on MalwareBazaar
TLSH T1EA141741571FE1BDD898433F86F1CDD4A1BA6D482CA0A23E1549B2F8DF7F68D407A09A
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% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 71c4f2f0f0b0d871 (1 x MarsStealer, 1 x PureCrypter)
Reporter adrian__luca
Tags:exe MarsStealer

Intelligence

File Origin
# of uploads :
3
# of downloads :
183
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
arkei
Create hunting rule
ID:
1
File name:
ungziped_file
Verdict:
Malicious activity
Analysis date:
2022-12-12 10:05:08 UTC
Tags:
opendir arkei trojan stealer vidar
Link:
https://app.any.run/tasks/95cafa69-4b65-4731-97fd-dca29ba526e6

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/345367/
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.19945.7790.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6396ea5dd4d7598ad905278e/reports/2e1cbd91-2f0e-401c-a75d-0fa405974fdc/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:
Suspicious
Link:
https://analyze.intezer.com/analyses/391311ed-f499-43fa-a5b0-861110c20bc6
Result
Threat name:
Mars Stealer, Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1132489
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
Found C&C like URL pattern
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies existing user documents (likely ransomware behavior)
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Crypto Currency Wallets
Yara detected Mars stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 765214 Sample: ungziped_file.exe Startdate: 12/12/2022 Architecture: WINDOWS Score: 100 35 Snort IDS alert for network traffic 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Yara detected Mars stealer 2->39 41 6 other signatures 2->41 8 ungziped_file.exe 15 4 2->8         started        process3 dnsIp4 29 netpa1n.com 185.66.88.198, 49703, 80 AGROSVITUA Ukraine 8->29 31 192.168.2.1 unknown unknown 8->31 27 C:\Users\user\...\ungziped_file.exe.log, ASCII 8->27 dropped 43 Encrypted powershell cmdline option found 8->43 13 RegAsm.exe 93 8->13         started        17 powershell.exe 16 8->17         started        file5 signatures6 process7 dnsIp8 33 152.89.218.174, 49710, 49711, 80 DHUBRU Russian Federation 13->33 45 Tries to harvest and steal browser information (history, passwords, etc) 13->45 47 Tries to steal Crypto Currency Wallets 13->47 49 Modifies existing user documents (likely ransomware behavior) 13->49 19 cmd.exe 1 13->19         started        21 conhost.exe 17->21         started        signatures9 process10 process11 23 conhost.exe 19->23         started        25 timeout.exe 1 19->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bef5258875c55fb1f312ecb27d8263702d778cbeed2c0ab5ec5b2da330b43ed7/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-12-12 08:46:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
20 of 25 (80.00%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=x32slcdvyvp3d4ys5szh3atdoawxpdf65uwavnpmlmw2gmfuh3lq._file
Verdict:
malicious
Similar samples:
27223530f9da259a9f2318b525399a30f5656ca4d2951d76af8039484d8f3e74
MarsStealer
4cc4171e3d6fed32ef70989056376256cc15448a75d9544d95124b161d700d13
MarsStealer
4def4ad12c7aab38e6248c20e211272f1c920a0295c8beda6228543e58c2129c
MarsStealer
7248563d27d6963821e6e2536510681ada58cad62969cfa1f7d835ba1694ad20
MarsStealer
a0fa31bcae15a52955443b7d0c7032cd970b9a52bb3c8642e37c2ea81519832f
MarsStealer
df4876573295b4e7beb618db31a015ea617f61b811978bb168d432c4052f7731
MarsStealer
ee52d8834cce35ee8287c44108bd9f6fca35dc7ffa15ec2b699e254c1818ee18
MarsStealer
+ 1'551 additional samples on MalwareBazaar
Result
Malware family:
marsstealer
Create hunting rule
Score:
  10/10
Tags:
family:marsstealer botnet:default discovery spyware stealer
Link:
https://tria.ge/reports/221212-kpcdasdf6y/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Mars Stealer
Malware Config
C2 Extraction:
152.89.218.174/gate.php
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/13f9926f-263a-451b-8708-d9896cdb67ba
Gathering data
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/bef5258875c55fb1f312ecb27d8263702d778cbeed2c0ab5ec5b2da330b43ed7

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:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
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

MarsStealer

Executable exe bef5258875c55fb1f312ecb27d8263702d778cbeed2c0ab5ec5b2da330b43ed7

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/345367/

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