MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca15a5ea935c76480d6cd7be6d57a8d391cdc1696c30abc16ccd2931227d43be. 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


Stealc


Vendor detections: 11


Intelligence 11 IOCs YARA 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ca15a5ea935c76480d6cd7be6d57a8d391cdc1696c30abc16ccd2931227d43be
SHA3-384 hash: 8041e72e5946e34a122246c332768713b480821ef38b350b1598dfbbf413f71f35459a97f66707f65c1c39bf3e31c9f2
SHA1 hash: 0140e6d57ce9e17c7a0f42f2b484d88d7fb02474
MD5 hash: aca4134ba68bda11fb86c7111f8be534
humanhash: idaho-floor-seven-bulldog
File name:aca4134ba68bda11fb86c7111f8be534.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:589'176 bytes
First seen:2023-10-30 10:25:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 298cb3d37775391ff8b8cc74cba1548f (15 x Stealc, 1 x MarsStealer)
ssdeep 12288:MS4vdwKTNWuuRYqrggHp/bLf7da3BIlXSY4j+6qj9:aF7M0UJf7gxIlqjyj9
Threatray 944 similar samples on MalwareBazaar
TLSH T195C49E51E2C14D3AC0672A3E5D1BE2AD58247D1226E8D88AAFD47FCC1F3528137F4A97
TrID 38.9% (.SCR) Windows screen saver (13097/50/3)
29.7% (.EXE) DOS Borland compiled Executable (generic) (10000/1/2)
13.3% (.EXE) Win32 Executable (generic) (4505/5/1)
6.0% (.EXE) OS/2 Executable (generic) (2029/13)
5.9% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 399998ecd4d46c0e (572 x Quakbot, 137 x ArkeiStealer, 82 x GCleaner)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://bidbur.com/b5c586aec2e1004c.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
344
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/457070/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.28700.29421.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control keylogger lolbin overlay packed replace shell32
Link:
https://www.filescan.io/uploads/653f84bab38131f117aaade5/reports/6053d9a7-6a20-48f9-a370-bf6f51cc46c5/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/ca15a5ea935c76480d6cd7be6d57a8d391cdc1696c30abc16ccd2931227d43be
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.
Malware family:
Oski Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0ac253cc-cac8-4999-ae37-99eadc11b5c3
Result
Threat name:
CryptOne, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1334155
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found evasive API chain (may stop execution after checking locale)
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)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Self deletion via cmd or bat file
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Yara detected CryptOne packer
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1334155 Sample: hgMwlDoF5T.exe Startdate: 30/10/2023 Architecture: WINDOWS Score: 100 35 bidbur.com 2->35 39 Snort IDS alert for network traffic 2->39 41 Multi AV Scanner detection for domain / URL 2->41 43 Found malware configuration 2->43 45 9 other signatures 2->45 8 hgMwlDoF5T.exe 33 2->8         started        13 SkypeApp.exe 2 4 2->13         started        signatures3 process4 dnsIp5 37 bidbur.com 68.170.2.83, 49705, 80 AS17054US United States 8->37 27 C:\Users\user\AppData\...\vcruntime140[1].dll, PE32 8->27 dropped 29 C:\Users\user\AppData\...\softokn3[1].dll, PE32 8->29 dropped 31 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 8->31 dropped 33 9 other files (none is malicious) 8->33 dropped 47 Detected unpacking (changes PE section rights) 8->47 49 Detected unpacking (overwrites its own PE header) 8->49 51 Found many strings related to Crypto-Wallets (likely being stolen) 8->51 53 4 other signatures 8->53 15 cmd.exe 1 8->15         started        17 WerFault.exe 16 8->17         started        19 WerFault.exe 19 16 8->19         started        21 2 other processes 8->21 file6 signatures7 process8 process9 23 conhost.exe 15->23         started        25 timeout.exe 1 15->25         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ca15a5ea935c76480d6cd7be6d57a8d391cdc1696c30abc16ccd2931227d43be
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ca15a5ea935c76480d6cd7be6d57a8d391cdc1696c30abc16ccd2931227d43be/
Threat name:
Win32.Trojan.Stealc
Create hunting rule
Status:
Malicious
First seen:
2023-10-30 10:26:06 UTC
File Type:
PE (Exe)
Extracted files:
38
AV detection:
19 of 23 (82.61%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zik2l2utlr3eqdlm267g2v5i2oi43qljnqykxqlmzuutcit5io7a._file
Verdict:
malicious
Similar samples:
004c712a89c92d20a1b5b95cac905c45d53afbdb8568744bace098fc849f6830
Stealc
00cf9b15ca612c789112daa8e71374dfbae845c7181ed7b2617fe6f81a52cb50
Stealc
0d51462bdc4ff0ef00c290aca555c13fc4d30ab74db79a043bbe75925407bbbd
Stealc
65ae72cabe43c04b49d3cc9bcfe836aef075ebc7e38502eaa9b83a63813871b1
Stealc
75d548831ca2f225524f60ff9817d37a2ad50d8e64972f9583441421f530d88f
Stealc
76b6b40ca473684a7c1f91d36d839521b759b945383a69174fe64cf3df607401
Stealc
bb64bbb1275764b20b7187238f3af234e59a84b56734439c1577811db4fb2972
Stealc
d392739ff6d577ce1e207fe9257d951025d61a98a767b304069155942a65b1ae
Stealc
e734881c3e7b490bd010f21547a0933bf88c39505dd7e4b30d6828dd8e12b119
Stealc
f564bfbcefef157a49b03dd3dce7844cdc2568500c655313a193520e29452512
Stealc
+ 934 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery spyware stealer
Link:
https://tria.ge/reports/231030-mghlfscc7v/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks computer location settings
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Unpacked files
SH256 hash:
ca15a5ea935c76480d6cd7be6d57a8d391cdc1696c30abc16ccd2931227d43be
MD5 hash:
aca4134ba68bda11fb86c7111f8be534
SHA1 hash:
0140e6d57ce9e17c7a0f42f2b484d88d7fb02474
Link:
https://www.unpac.me/results/03e0f344-706f-4229-a2e1-518e5a892413/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ca15a5ea935c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:BobSoftMiniDelphiBoBBobSoft
Create hunting rule
Author:malware-lu
Rule name:Borland
Create hunting rule
Author:malware-lu
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:detect_Mars_Stealer
Create hunting rule
Author:@malgamy12
Description:detect_Mars_Stealer
Rule name:infostealer_win_stealc_standalone
Create hunting rule
Description:Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Trojan_W32_Gh0stMiancha_1_0_0
Create hunting rule
Rule name:win_stealc_w0
Create hunting rule
Author:crep1x
Description:Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/
Rule name:yarahub_win_stealc_bytecodes_oct_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

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

Web download

Stealc

Executable exe ca15a5ea935c76480d6cd7be6d57a8d391cdc1696c30abc16ccd2931227d43be

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2723302/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/457070/

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