MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542. 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: 16


Intelligence 16 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542
SHA3-384 hash: 88c5299ee6046b431f0552139c18032cef3fd0a00fbaea4bc2d83bbdab153ab7c6bc37d886485b4085f0fe9631084204
SHA1 hash: ac2661bb895e03caf699d5423a43d2110fc9a845
MD5 hash: 869a131479a46dbf07834129f180f371
humanhash: mockingbird-don-fifteen-chicken
File name:file
Download: download sample
Signature Stealc
Create hunting rule
File size:1'789'440 bytes
First seen:2024-08-23 14:51:14 UTC
Last seen:2024-08-23 17:05:08 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 49152:2siTGYfR11ezGbOkxOtm6KzP+gPBWmlRG:2sKGaVMGxxE9smgpjR
TLSH T1E68533211E05FD59C43EE1713B95EFAE394C75C543FA1F493329388ADBA62C17AC1886
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 Stealc


Avatar
Bitsight
url: http://31.41.244.11/steam/random.exe

Intelligence

File Origin
# of uploads :
7
# of downloads :
551
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-08-23 14:54:44 UTC
Tags:
stealer stealc
Link:
https://app.any.run/tasks/96cbaacd-5041-4337-90b9-36cbd4418a21

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.13368.5455.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66c8a214e7ff3f5a063bcef4
Tags:
Execution Generic Infostealer Network Stealth Trojan
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for analyzing tools
Searching for the window
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
Link:
https://www.filescan.io/uploads/66c8a214950c378bfba520fd/reports/2786e159-749e-4113-a953-541dc02fa544/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/e45dc1ea-7815-4f3e-a580-7816f41c3bff
Result
Threat name:
Amadey, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1498103
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Hides threads from debuggers
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
PE file contains section with special chars
Sigma detected: Suspicious File Creation In Uncommon AppData 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 Powershell download and execute
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1498103 Sample: file.exe Startdate: 23/08/2024 Architecture: WINDOWS Score: 100 90 us-west1.prod.sumo.prod.webservices.mozgcp.net 2->90 92 telemetry-incoming.r53-2.services.mozilla.com 2->92 94 24 other IPs or domains 2->94 120 Suricata IDS alerts for network traffic 2->120 122 Found malware configuration 2->122 124 Antivirus detection for URL or domain 2->124 126 11 other signatures 2->126 9 file.exe 37 2->9         started        14 svoutse.exe 19 2->14         started        16 svoutse.exe 2->16         started        18 4 other processes 2->18 signatures3 process4 dnsIp5 96 185.215.113.100, 49730, 49743, 80 WHOLESALECONNECTIONSNL Portugal 9->96 98 31.41.244.11, 49733, 49740, 49742 AEROEXPRESS-ASRU Russian Federation 9->98 66 C:\Users\user\AppData\RoamingDAAAFBKECA.exe, PE32 9->66 dropped 68 C:\Users\user\AppData\...\softokn3[1].dll, PE32 9->68 dropped 70 C:\Users\user\AppData\Local\...\random[1].exe, PE32 9->70 dropped 80 13 other files (9 malicious) 9->80 dropped 152 Detected unpacking (changes PE section rights) 9->152 154 Tries to steal Mail credentials (via file / registry access) 9->154 156 Found many strings related to Crypto-Wallets (likely being stolen) 9->156 168 5 other signatures 9->168 20 cmd.exe 1 9->20         started        22 cmd.exe 1 9->22         started        100 31.41.244.10, 49739, 49741, 49744 AEROEXPRESS-ASRU Russian Federation 14->100 102 prod.ads.prod.webservices.mozgcp.net 14->102 72 C:\Users\user\AppData\...\123e5dc12e.exe, PE32 14->72 dropped 74 C:\Users\user\AppData\...\d298b0421c.exe, PE32 14->74 dropped 76 C:\Users\user\AppData\Local\...\random[1].exe, PE32 14->76 dropped 78 C:\Users\user\AppData\Local\...\random[1].exe, PE32 14->78 dropped 158 Hides threads from debuggers 14->158 160 Tries to detect sandboxes / dynamic malware analysis system (registry check) 14->160 162 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 14->162 24 d298b0421c.exe 13 14->24         started        27 123e5dc12e.exe 14->27         started        164 Tries to evade debugger and weak emulator (self modifying code) 16->164 104 192.168.2.4, 138, 443, 49294 unknown unknown 18->104 106 239.255.255.250 unknown Reserved 18->106 82 2 other malicious files 18->82 dropped 166 Maps a DLL or memory area into another process 18->166 29 firefox.exe 18->29         started        33 msedge.exe 18->33         started        35 msedge.exe 18->35         started        37 5 other processes 18->37 file6 signatures7 process8 dnsIp9 39 RoamingDAAAFBKECA.exe 4 20->39         started        43 conhost.exe 20->43         started        45 userIJKJJKFHIJ.exe 22->45         started        47 conhost.exe 22->47         started        128 Detected unpacking (changes PE section rights) 24->128 130 Tries to detect sandboxes and other dynamic analysis tools (window names) 24->130 132 Tries to evade debugger and weak emulator (self modifying code) 24->132 136 3 other signatures 24->136 134 Binary is likely a compiled AutoIt script file 27->134 49 msedge.exe 27->49         started        51 firefox.exe 27->51         started        108 services.addons.mozilla.org 18.65.39.4, 443, 49846 MIT-GATEWAYSUS United States 29->108 110 prod.detectportal.prod.cloudops.mozgcp.net 34.107.221.82, 49806, 49818, 49821 GOOGLEUS United States 29->110 116 10 other IPs or domains 29->116 84 C:\Users\user\AppData\...\gmpopenh264.dll.tmp, PE32+ 29->84 dropped 86 C:\Users\user\...\gmpopenh264.dll (copy), PE32+ 29->86 dropped 88 C:\Users\user\AppData\...\places.sqlite-wal, SQLite 29->88 dropped 53 firefox.exe 29->53         started        55 firefox.exe 29->55         started        57 firefox.exe 29->57         started        112 13.107.246.40, 443, 49794, 49795 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 33->112 114 googlehosted.l.googleusercontent.com 142.250.185.129, 443, 49758 GOOGLEUS United States 33->114 118 11 other IPs or domains 33->118 file10 signatures11 process12 file13 64 C:\Users\user\AppData\Local\...\svoutse.exe, PE32 39->64 dropped 138 Detected unpacking (changes PE section rights) 39->138 140 Tries to evade debugger and weak emulator (self modifying code) 39->140 142 Tries to detect virtualization through RDTSC time measurements 39->142 150 2 other signatures 39->150 59 svoutse.exe 39->59         started        144 Antivirus detection for dropped file 45->144 146 Machine Learning detection for dropped file 45->146 148 Hides threads from debuggers 45->148 62 msedge.exe 49->62         started        signatures14 process15 signatures16 170 Hides threads from debuggers 59->170 172 Tries to detect sandboxes / dynamic malware analysis system (registry check) 59->172 174 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 59->174
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542/
Threat name:
Win32.Trojan.Stealerc
Create hunting rule
Status:
Malicious
First seen:
2024-08-23 14:52:06 UTC
File Type:
PE (Exe)
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vctg7ds4hj6wj2ldxkf47udz5eu7uqdysllb746i3avkrwj2cvba._file
Verdict:
unknown
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc botnet:leva discovery evasion stealer
Link:
https://tria.ge/reports/240823-r8p7tsshqp/
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
Malware Config
C2 Extraction:
http://185.215.113.100
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/d10578f2-bfd3-4b07-9bff-23bbdc77f2bf
Unpacked files
SH256 hash:
85acd03e7a416931c81114c7729b14c9ffaba9a7d31ed7667046c3d4d1347bfe
MD5 hash:
58295236409168535b40ce6988dd23b3
SHA1 hash:
a1fd8c1e22844b9a8b4fda119e8272481c43c55e
Detections:
stealc
Create hunting rule
win_stealc_w0
Create hunting rule
win_stealc_a0
Create hunting rule
Link:
https://www.unpac.me/results/3284aa00-6d7a-4140-b936-98448117aec2/
SH256 hash:
a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542
MD5 hash:
869a131479a46dbf07834129f180f371
SHA1 hash:
ac2661bb895e03caf699d5423a43d2110fc9a845
Link:
https://www.unpac.me/results/3284aa00-6d7a-4140-b936-98448117aec2/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a8a66f8e5c3a/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/a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542

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

Stealc

Executable exe a8a66f8e5c3a7d64e963ba8bcfd079e929fa407892d61ff3c8d82aa8d93a1542

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3122269/
  
URLhaus
https://urlhaus.abuse.ch/url/3120910/
  
URLhaus
https://urlhaus.abuse.ch/url/3114824/
  
URLhaus
https://urlhaus.abuse.ch/url/3120900/
  
URLhaus
https://urlhaus.abuse.ch/url/3120904/

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