MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3f8a75b62e2cd1b0f7d1e619be512f20e469f95a03c095a25e1c9debf64b423. 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: 15


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

SHA256 hash: a3f8a75b62e2cd1b0f7d1e619be512f20e469f95a03c095a25e1c9debf64b423
SHA3-384 hash: b6ea928221dad320a20a093ed0a10fdbe32072fc93032f17ffafb4c311993b879577516b7bd706665d03d173a3fc9e23
SHA1 hash: 4ee0cce848e48e480b5726f3b4e6c49c81a0c0c3
MD5 hash: b83c9bd78a155d87c4322ce35cbc24ba
humanhash: washington-moon-mississippi-november
File name:b83c9bd78a155d87c4322ce35cbc24ba.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:280'576 bytes
First seen:2023-09-06 06:36:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 414866fe1c8512328085560b1dd725b8 (1 x OnlyLogger, 1 x Smoke Loader, 1 x Stealc)
ssdeep 3072:XBompQwig/LU0OlNMePIQtefGe5PBYqNo70vMMNmQocn51JvK8a0kT:xTig/LU0OlKePptOJw78bNmQVvJC8a
Threatray 217 similar samples on MalwareBazaar
TLSH T126543883A2D0BC61D52697318EDEC2F8771DB951CE496B56B3186E2F18790F2D26F310
TrID 37.3% (.EXE) Win64 Executable (generic) (10523/12/4)
17.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
16.0% (.EXE) Win32 Executable (generic) (4505/5/1)
7.3% (.ICL) Windows Icons Library (generic) (2059/9)
7.2% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 080828480e030600 (1 x Stealc, 1 x GCleaner)
Reporter abuse_ch
Tags:exe Stealc

Intelligence

File Origin
# of uploads :
1
# of downloads :
301
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
oski
Create hunting rule
ID:
1
File name:
b83c9bd78a155d87c4322ce35cbc24ba.exe
Verdict:
Malicious activity
Analysis date:
2023-09-06 06:52:18 UTC
Tags:
stealc oski stealer
Link:
https://app.any.run/tasks/13653473-0f40-4e00-a092-48ad18943663

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/446501/
Detection(s):
Win.Packer.pkr_ce1a-9980177-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware packed xpack
Link:
https://www.filescan.io/uploads/64f81e0fb7dd6394f71196b0/reports/e6bb9ec4-e14a-45fb-b6a5-413e317b517e/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/a3f8a75b62e2cd1b0f7d1e619be512f20e469f95a03c095a25e1c9debf64b423
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/104e5537-54a3-4aac-8109-6ba489ba834e
Result
Threat name:
Stealc
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1304093
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
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Snort IDS alert for network traffic
Yara detected Stealc
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3f8a75b62e2cd1b0f7d1e619be512f20e469f95a03c095a25e1c9debf64b423/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2023-09-05 20:07:00 UTC
File Type:
PE (Exe)
Extracted files:
40
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=up4kow3c4lgrwd35dzqzxzis6ihenh4vua6aswrf4he55p3ewqrq._file
Verdict:
malicious
Similar samples:
37297514a2a5af1e14981bac45ec19f91fb0de2a4914ec1fb4d85afd4ac5cb86
Stealc
4fa066ec21247d30bc4cafba293d36e2a02e5ffc6dd491591dd52fe38e87ec50
Stealc
53cd047dfb61fc7c3391c4300b4a75fbaea2b9d304c4a482e493f8eb4e7f2660
Stealc
574b077dd3e9f8ec41d2cd919445b06d765af63da6c5fa55c02843c4a486f638
Stealc
715821d03d18bb8dab9435aa68a6507532630ed3252dcbf76316a2e8ea228be8
Stealc
8320b1984cd007f2e819d2572382e0d231feae3b91ec2d30163665aa1295cdc5
Stealc
b2000bfff069cd0554a923e50c2188184ec39b724a5a80fa45f33a5571c69bfa
Stealc
e98360ac2b2e51024e6ed3b09b43660e8932a5cfe18c7d75ca4be4f38e1b2183
Stealc
fe67f1ecbe9abfe88f81ddf03e32195a00a188f1944309308ffd115d1792e343
Stealc
ffb49a4f796a33f6bb50a4ee3c71ec12819852ec25c2e6be4220e4cf7728c5c6
Stealc
+ 207 additional samples on MalwareBazaar
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc botnet:4109976902326622912460160242 discovery stealer
Link:
https://tria.ge/reports/230906-hdhd3adg7t/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Program crash
Checks installed software on the system
Stealc
Malware Config
C2 Extraction:
http://michealjohnson.top
Unpacked files
SH256 hash:
38a5c69d1ee7c40cdc52172548936ec691f56d84bb413121375d0efa812d7c91
MD5 hash:
264d2a0135d0a951b22c3602b5bb253b
SHA1 hash:
c22c31873b2c474443b6dbf488cc28e2b434c093
Link:
https://www.unpac.me/results/db73abf0-3503-4e15-a2ac-96e1c2231234/
SH256 hash:
a3f8a75b62e2cd1b0f7d1e619be512f20e469f95a03c095a25e1c9debf64b423
MD5 hash:
b83c9bd78a155d87c4322ce35cbc24ba
SHA1 hash:
4ee0cce848e48e480b5726f3b4e6c49c81a0c0c3
Link:
https://www.unpac.me/results/db73abf0-3503-4e15-a2ac-96e1c2231234/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a3f8a75b62e2/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/a3f8a75b62e2cd1b0f7d1e619be512f20e469f95a03c095a25e1c9debf64b423

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.

Web download

Stealc

Executable exe a3f8a75b62e2cd1b0f7d1e619be512f20e469f95a03c095a25e1c9debf64b423

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2709830/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/446501/

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