MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88. 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: 15


Intelligence 15 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88
SHA3-384 hash: 135d35109ad9e60ba6ae0f570f2db4235cbd6a202d00aec0e9fc7286134d83a4eda86a920ec252c9cdce464040aef256
SHA1 hash: eade351571a68acb2003301f3b29b165deed11f8
MD5 hash: 6fd1a6a721b41de370d8ed5d1e2de198
humanhash: edward-two-missouri-sad
File name:file
Download: download sample
Signature MarsStealer
Create hunting rule
File size:2'159'104 bytes
First seen:2024-11-09 08:56:38 UTC
Last seen:2024-11-09 10:27:49 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 2eabe9054cad5152567f0699947a2c5b (2'852 x LummaStealer, 1'312 x Stealc, 1'026 x Healer)
ssdeep 49152:J/k9x6exxxAKaPydZkBWnfHGEVX1x6AA4vkd5Rluo9rCgEfs6+DcfrMbb:/Jyd+Bm/GgXxvkdFrCgEfsZD+Mb
TLSH T150A533F45810D5B2FFE2ACFB502ECC77AA1E764039FE68CC41A764AE0C736459D20969
TrID 27.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
20.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
18.6% (.EXE) Win32 Executable (generic) (4504/4/1)
8.5% (.ICL) Windows Icons Library (generic) (2059/9)
8.3% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
Reporter Bitsight
Tags:exe MarsStealer


Avatar
Bitsight
url: http://185.215.113.16/steam/random.exe

Intelligence

File Origin
# of uploads :
31
# of downloads :
396
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
099a1ef989581ef807309f62bf36436a.exe
Verdict:
Malicious activity
Analysis date:
2024-11-09 09:19:52 UTC
Tags:
lumma stealer possible-phishing loader stealc themida
Link:
https://app.any.run/tasks/4b999ed9-b373-45eb-864f-7a4a6149e0e1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.BackdoorX-gen.6138.5507.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=672f23fe6c614f3030a3b863
Tags:
vmdetect spam
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for analyzing tools
Searching for the window
Creating a file
Running batch commands
Creating a process with a hidden window
Launching a process
Connection attempt to an infection source
Sending an HTTP GET request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
anti-vm microsoft_visual_cc packed packed packer_detected
Link:
https://www.filescan.io/uploads/672f23e0f89762b373f3ad10/reports/d1d66176-459c-4c01-be79-f3e30fbbbae0/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/b0f08bbd-3b70-4b71-b525-ce8f5b3c5c85
Result
Threat name:
LummaC, Amadey, LummaC Stealer, Stealc,
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1552700
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Attempt to bypass Chrome Application-Bound Encryption
C2 URLs / IPs found in malware configuration
Creates multiple autostart registry keys
Detected unpacking (changes PE section rights)
Disable Windows Defender notifications (registry)
Disable Windows Defender real time protection (registry)
Disables Windows Defender Tamper protection
Drops PE files to the document folder of the user
Drops PE files to the user root directory
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Hides threads from debuggers
Injects a PE file into a foreign processes
LummaC encrypted strings found
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies windows update settings
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
Query firmware table information (likely to detect VMs)
Sample uses string decryption to hide its real strings
Sigma detected: New RUN Key Pointing to Suspicious Folder
Suricata IDS alerts for network traffic
Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect sandboxes and other dynamic analysis tools (window names)
Tries to detect virtualization through RDTSC time measurements
Tries to evade debugger and weak emulator (self modifying code)
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Crypto Currency Wallets
Tries to steal Mail credentials (via file / registry access)
Yara detected Amadeys stealer DLL
Yara detected LummaC Stealer
Yara detected Powershell download and execute
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1552700 Sample: file.exe Startdate: 09/11/2024 Architecture: WINDOWS Score: 100 64 thumbystriw.store 2->64 66 presticitpo.store 2->66 68 5 other IPs or domains 2->68 90 Suricata IDS alerts for network traffic 2->90 92 Found malware configuration 2->92 94 Antivirus detection for URL or domain 2->94 96 16 other signatures 2->96 9 skotes.exe 3 22 2->9         started        14 file.exe 37 2->14         started        16 dca0bd77af.exe 2->16         started        18 6 other processes 2->18 signatures3 process4 dnsIp5 82 185.215.113.43 WHOLESALECONNECTIONSNL Portugal 9->82 48 C:\Users\user\AppData\...\f9d5996253.exe, PE32 9->48 dropped 50 C:\Users\user\AppData\...\dd3f01133f.exe, PE32 9->50 dropped 52 C:\Users\user\AppData\...\dca0bd77af.exe, PE32 9->52 dropped 60 3 other malicious files 9->60 dropped 130 Creates multiple autostart registry keys 9->130 132 Hides threads from debuggers 9->132 134 Injects a PE file into a foreign processes 9->134 20 f9d5996253.exe 9->20         started        23 dca0bd77af.exe 13 9->23         started        26 dd3f01133f.exe 9->26         started        28 skotes.exe 9->28         started        84 185.215.113.206, 49730, 49756, 80 WHOLESALECONNECTIONSNL Portugal 14->84 86 185.215.113.16, 49761, 80 WHOLESALECONNECTIONSNL Portugal 14->86 88 127.0.0.1 unknown unknown 14->88 54 C:\Users\user\DocumentsCGIDGCGIEG.exe, PE32 14->54 dropped 56 C:\Users\user\AppData\...\softokn3[1].dll, PE32 14->56 dropped 58 C:\Users\user\AppData\Local\...\random[1].exe, PE32 14->58 dropped 62 12 other files (8 malicious) 14->62 dropped 136 Detected unpacking (changes PE section rights) 14->136 138 Attempt to bypass Chrome Application-Bound Encryption 14->138 140 Drops PE files to the document folder of the user 14->140 154 6 other signatures 14->154 30 cmd.exe 1 14->30         started        32 chrome.exe 14->32         started        142 Query firmware table information (likely to detect VMs) 16->142 144 Tries to harvest and steal ftp login credentials 16->144 146 Tries to harvest and steal browser information (history, passwords, etc) 16->146 148 Tries to steal Crypto Currency Wallets 18->148 150 Tries to detect sandboxes / dynamic malware analysis system (registry check) 18->150 152 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 18->152 file6 signatures7 process8 dnsIp9 106 Multi AV Scanner detection for dropped file 20->106 108 Detected unpacking (changes PE section rights) 20->108 110 Tries to detect sandboxes and other dynamic analysis tools (window names) 20->110 126 4 other signatures 20->126 70 navygenerayk.store 188.114.97.3 CLOUDFLARENETUS European Union 23->70 112 Antivirus detection for dropped file 23->112 114 Query firmware table information (likely to detect VMs) 23->114 116 Machine Learning detection for dropped file 23->116 128 2 other signatures 23->128 118 Tries to evade debugger and weak emulator (self modifying code) 26->118 120 Hides threads from debuggers 26->120 122 Tries to detect sandboxes / dynamic malware analysis system (registry check) 26->122 124 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 28->124 34 DocumentsCGIDGCGIEG.exe 4 30->34         started        38 conhost.exe 30->38         started        72 192.168.2.4, 443, 49723, 49730 unknown unknown 32->72 74 239.255.255.250 unknown Reserved 32->74 40 chrome.exe 32->40         started        signatures10 process11 dnsIp12 46 C:\Users\user\AppData\Local\...\skotes.exe, PE32 34->46 dropped 98 Antivirus detection for dropped file 34->98 100 Detected unpacking (changes PE section rights) 34->100 102 Machine Learning detection for dropped file 34->102 104 5 other signatures 34->104 43 skotes.exe 34->43         started        76 play.google.com 142.250.185.78, 443, 49752 GOOGLEUS United States 40->76 78 plus.l.google.com 172.217.18.14, 443, 49749 GOOGLEUS United States 40->78 80 2 other IPs or domains 40->80 file13 signatures14 process15 signatures16 156 Antivirus detection for dropped file 43->156 158 Detected unpacking (changes PE section rights) 43->158 160 Machine Learning detection for dropped file 43->160 162 5 other signatures 43->162
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-11-09 08:57:06 UTC
File Type:
PE (Exe)
AV detection:
17 of 38 (44.74%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=56gjpupfss45pdybslmpqorjzpmdvsxkbrvva67nlswmj7ykdkea._file
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc botnet:tale discovery evasion stealer
Link:
https://tria.ge/reports/241109-kwlkjs1jdx/
Behaviour
Suspicious behavior: EnumeratesProcesses
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Checks BIOS information in registry
Identifies Wine through registry keys
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Stealc
Stealc family
Malware Config
C2 Extraction:
http://185.215.113.206
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/3c875f53-fc57-4d26-9226-b9149eca25bd
Unpacked files
SH256 hash:
81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4
MD5 hash:
eda18948a989176f4eebb175ce806255
SHA1 hash:
ff22a3d5f5fb705137f233c36622c79eab995897
Link:
https://www.unpac.me/results/dc59f08e-ed7d-4b74-b19d-c9f14ead8ccd/
SH256 hash:
704cb9608b8daf4d80af636bbaca985a49550a6fe462f5b31d9df39f82fb535b
MD5 hash:
9caf053a8c89ce57ef859ecc5b3b29ca
SHA1 hash:
fca4216c69ceb88b9984b9bc795e43fe688caa20
Detections:
stealc
Create hunting rule
win_stealc_w0
Create hunting rule
win_stealc_a0
Create hunting rule
detect_Mars_Stealer
Create hunting rule
Link:
https://www.unpac.me/results/dc59f08e-ed7d-4b74-b19d-c9f14ead8ccd/
SH256 hash:
ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88
MD5 hash:
6fd1a6a721b41de370d8ed5d1e2de198
SHA1 hash:
eade351571a68acb2003301f3b29b165deed11f8
Link:
https://www.unpac.me/results/dc59f08e-ed7d-4b74-b19d-c9f14ead8ccd/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ef8c97d1e594/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/ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88

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:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Web download

MarsStealer

Executable exe ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3279845/
  
URLhaus
https://urlhaus.abuse.ch/url/3273391/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical

Comments