MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a36f57a8a85068b665998f143867ff57a4cad4e24f66acf48cef697df2e9ec86. 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: 12


Intelligence 12 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a36f57a8a85068b665998f143867ff57a4cad4e24f66acf48cef697df2e9ec86
SHA3-384 hash: 0e87e8f75cbd0d9708ae7d323c87c30bedfd17226295849f215769bf1f3cc4be368ccfe841c539ea1cc32ce8118ba09e
SHA1 hash: a9cda0d89fb72b0e506c842c38de4f7e4ede1b6b
MD5 hash: 0902b78e1e65b2ebf0cf5075e076598d
humanhash: beryllium-mockingbird-cold-apart
File name:file
Download: download sample
Signature Stealc
Create hunting rule
File size:268'288 bytes
First seen:2023-10-05 07:30:11 UTC
Last seen:2023-10-05 09:16:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash c7ce42f103eec7e3e471decc395f9d0b (3 x Stealc, 3 x Smoke Loader, 2 x Tofsee)
ssdeep 3072:6tLzQixjzCKOEsDNLnuH+W3rwLWtHVWrUEacLaKYOQvUze6es4zk5+WVrw:m/QIzHOlDNrQrwinEpLFYZvUzecV
Threatray 109 similar samples on MalwareBazaar
TLSH T1BC44E12175F1C472D5A356348930C7A4AA7BB8627AB0885B375C26BEDF306C1CB6B313
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 000808480c020200 (1 x Stealc)
Reporter andretavare5
Tags:exe Stealc


Avatar
andretavare5
Sample downloaded from http://5.42.64.10/api/files/software/s2.exe

Intelligence

File Origin
# of uploads :
5
# of downloads :
271
Origin country :
US US
Vendor Threat Intelligence
Detection(s):
Win.Packer.pkr_ce1a-9980177-0
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Gathering data
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/651e6635426c8727d6ee6201/reports/306efe96-c730-4fa1-bc27-fb6a3f55c943/overview
Verdict:
Malicious
Labled as:
Jaik.Generic
Link:
https://www.hybrid-analysis.com/sample/a36f57a8a85068b665998f143867ff57a4cad4e24f66acf48cef697df2e9ec86
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/4448247d-5688-490a-8565-9b3e4a43c5d3
Result
Threat name:
Stealc, Vidar, onlyLogger
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1319947
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 malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected onlyLogger
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1319947 Sample: file.exe Startdate: 05/10/2023 Architecture: WINDOWS Score: 100 55 aidandylan.top 2->55 57 script.googleusercontent.com 2->57 59 2 other IPs or domains 2->59 67 Snort IDS alert for network traffic 2->67 69 Multi AV Scanner detection for domain / URL 2->69 71 Found malware configuration 2->71 73 11 other signatures 2->73 10 file.exe 20 2->10         started        signatures3 process4 dnsIp5 61 aidandylan.top 85.143.221.30, 49705, 49706, 49718 TRADERSOFTRU Russian Federation 10->61 63 5.42.64.10, 49703, 49704, 49707 RU-KSTVKolomnaGroupofcompaniesGuarantee-tvRU Russian Federation 10->63 65 2 other IPs or domains 10->65 49 C:\Users\user\AppData\...\0658828141.exe, PE32 10->49 dropped 51 C:\Users\user\AppData\...\syncUpd[1].exe, PE32 10->51 dropped 53 C:\Users\user\AppData\...\syncUpd[1].exe, PE32 10->53 dropped 83 Detected unpacking (changes PE section rights) 10->83 85 Detected unpacking (overwrites its own PE header) 10->85 15 cmd.exe 1 10->15         started        17 cmd.exe 1 10->17         started        19 WerFault.exe 22 16 10->19         started        21 backgroundTaskHost.exe 1 14 10->21         started        file6 signatures7 process8 process9 23 0658828141.exe 51 15->23         started        27 conhost.exe 15->27         started        29 taskkill.exe 1 17->29         started        31 conhost.exe 17->31         started        file10 41 C:\Users\user\AppData\...\softokn3[1].dll, PE32 23->41 dropped 43 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 23->43 dropped 45 C:\Users\user\AppData\...\mozglue[1].dll, PE32 23->45 dropped 47 9 other files (5 malicious) 23->47 dropped 75 Multi AV Scanner detection for dropped file 23->75 77 Detected unpacking (changes PE section rights) 23->77 79 Detected unpacking (overwrites its own PE header) 23->79 81 5 other signatures 23->81 33 cmd.exe 1 23->33         started        35 WerFault.exe 21 16 23->35         started        signatures11 process12 process13 37 conhost.exe 33->37         started        39 timeout.exe 1 33->39         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a36f57a8a85068b665998f143867ff57a4cad4e24f66acf48cef697df2e9ec86/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2023-10-05 07:31:04 UTC
File Type:
PE (Exe)
Extracted files:
10
AV detection:
20 of 23 (86.96%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=unxvpkfikbulmzmzr4kdqz77k6smvvhcj5tkz5em55ux34xj5sda._file
Verdict:
malicious
Similar samples:
134a9c039c8bd677ce4cb6cab52ee0a1d52a4fe3ff21600871ee38b9a629789b
Stealc
1837622fbafa47eb30d479df4f4c97e41e54c9f65c99859b9b4ef195fa9bcdbc
Stealc
55df033fe62f9b849870c10e28db0432cb4287e278cfc80acc3d113a6887513d
Stealc
5e67e7c2573fa5e6522517d3f97cc38b79d47f4e0b16d4d1b9448ba72626d355
Stealc
6e75be092dacc4f00da72baf4ea2d7fcc84220ec04f213e0b14eed89004f4ae0
Stealc
a1d841ce7d37bf840f5093620aac706b9c5ad87b986462dc131f2dc577aa59f7
Stealc
beca325649a048fb9d8517b206b82f94a0663138725660ee957b75e8d5ebe494
Stealc
d37b53f23353eede338e7d30afadc73cd4ca9e1f010367925e70502c4c27bd95
Stealc
dbee3dbe90cbe6fefd612f476a0f8e34f0f74bdd4785db3adc424efaff3f3ac4
Stealc
+ 99 additional samples on MalwareBazaar
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc discovery spyware stealer
Link:
https://tria.ge/reports/231005-jccymahd4y/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Stealc
Malware Config
C2 Extraction:
http://aidandylan.top
Unpacked files
SH256 hash:
055917c53bcbfd2bbcd4d428cf08d45afdecefc99605328bb2ac6fd2a9df9f7c
MD5 hash:
dd3e2766fed2e5b8619097ef27ae78a3
SHA1 hash:
905af3c4efa701627a90230686eb8c372b44bf19
Link:
https://www.unpac.me/results/6096fe4d-7927-434c-bdfa-35083f72fd3f/
Parent samples :
87c9f6da1bde1c4762477b55c8fbd4f821464f23669c08eef59df00adc438a37
12cd64a6d63eb4c7ae10c011a65ea69f9ce0022197d39cb454cc63fc7e147f78
658d9ea4093e492a0f1a8cc6e054e65d2ea30f22fd179b1e1ca58c17618690e9
a4f2367e3e2e9a8ce919fde4522d4a347e30fa7625ff391b082a5c830acb1a76
030c0eab77f63f34b1d09730a8d01a6e5c128c564f75e8f24dddf1a9c1917507
53d10bf98c4e290949b6efe10418a674c737c837ad85fcd47baeeaaa8d72ddcf
92f8faa5180fb698b2313532039b120227e32255dfacf2b3139a4b3734a1fe0c
SH256 hash:
a36f57a8a85068b665998f143867ff57a4cad4e24f66acf48cef697df2e9ec86
MD5 hash:
0902b78e1e65b2ebf0cf5075e076598d
SHA1 hash:
a9cda0d89fb72b0e506c842c38de4f7e4ede1b6b
Link:
https://www.unpac.me/results/6096fe4d-7927-434c-bdfa-35083f72fd3f/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a36f57a8a850/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/a36f57a8a85068b665998f143867ff57a4cad4e24f66acf48cef697df2e9ec86

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

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

  
Dropped by
PrivateLoader
  
Delivery method
Distributed via drive-by
  
URLhaus
https://urlhaus.abuse.ch/url/2716172/

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