MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4239478f1ff05d0014ba2492e155e733b661473d7299cbf98eb8f81bbf6e719a. 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: 10


Intelligence 10 IOCs YARA 6 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4239478f1ff05d0014ba2492e155e733b661473d7299cbf98eb8f81bbf6e719a
SHA3-384 hash: f74b15feb58f183fdb25321ae7b3521b1c75c18d56b8a16071ed85ac9526fdff2437fe9340fac6ffa81217315dacc3be
SHA1 hash: 8df727d494b109818683f54efebd780d968babbc
MD5 hash: 0f1ff9db919b563b92454867c5a04733
humanhash: alabama-leopard-lactose-violet
File name:0f1ff9db919b563b92454867c5a04733
Download: download sample
Signature Stealc
Create hunting rule
File size:2'705'408 bytes
First seen:2023-10-04 08:39:49 UTC
Last seen:2023-10-04 10:30:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 49152:8p5no40twpOW79X+d8jdfMu9oPmN63Gewb4:wl10tsxuSfMvyOG
Threatray 379 similar samples on MalwareBazaar
TLSH T1E6C5DF03BA9B86B1E24B5737E59B0C04F364D983332FD70A794E23A75903FAB9925507
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter zbetcheckin
Tags:32 exe Stealc

Intelligence

File Origin
# of uploads :
2
# of downloads :
319
Origin country :
FR FR
Vendor Threat Intelligence
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/651d24ef40343f27c671c37c/reports/d1c65276-90e7-4a08-8964-0a470259ba14/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4239478f1ff05d0014ba2492e155e733b661473d7299cbf98eb8f81bbf6e719a
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:
Malicious
Link:
https://analyze.intezer.com/analyses/d90d97f7-0fa8-43db-bca2-b66fa1f80271
Result
Threat name:
Stealc
Create hunting rule
Detection:
malicious
Classification:
bank.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1319299
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious encrypted Powershell command line found
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
Powershell is started from unusual location (likely to bypass HIPS)
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Very long command line found
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected Stealc
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1319299 Sample: Hk5f5kbw3l.exe Startdate: 04/10/2023 Architecture: WINDOWS Score: 100 59 tse1.mm.bing.net 2->59 75 Multi AV Scanner detection for domain / URL 2->75 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 10 other signatures 2->81 9 IsPublic.exe 3 2->9         started        12 cmd.exe 2->12         started        14 Hk5f5kbw3l.exe 3 2->14         started        signatures3 process4 signatures5 83 Multi AV Scanner detection for dropped file 9->83 85 Machine Learning detection for dropped file 9->85 87 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 9->87 16 IsPublic.exe 2 9->16         started        19 IsPublic.exe 9->19         started        89 Malicious encrypted Powershell command line found 12->89 91 Very long command line found 12->91 21 cmd.exe 12->21         started        23 conhost.exe 12->23         started        93 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 14->93 95 Injects a PE file into a foreign processes 14->95 25 Hk5f5kbw3l.exe 6 14->25         started        process6 file7 67 Writes to foreign memory regions 16->67 69 Injects a PE file into a foreign processes 16->69 28 MSBuild.exe 3 16->28         started        31 MSBuild.exe 16->31         started        33 MSBuild.exe 16->33         started        71 Malicious encrypted Powershell command line found 21->71 73 Very long command line found 21->73 35 Pvadifukrz.png 21->35         started        38 xcopy.exe 21->38         started        41 xcopy.exe 21->41         started        43 3 other processes 21->43 55 C:\Users\user\AppData\Local\...\IsPublic.exe, PE32 25->55 dropped signatures8 process9 dnsIp10 97 Injects a PE file into a foreign processes 28->97 45 MSBuild.exe 16 3 28->45         started        49 MSBuild.exe 28->49         started        99 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 31->99 61 91.103.253.171, 80 LTDREAL-ASRU Russian Federation 35->61 101 Powershell is started from unusual location (likely to bypass HIPS) 35->101 51 C:\Users\user\AppData\...\Pvadifukrz.png, PE32 38->51 dropped 53 C:\Users\user\AppData\...\Pvadifukrz.png.bat, DOS 41->53 dropped file11 signatures12 process13 dnsIp14 63 89.208.104.74, 49838, 80 PSKSET-ASRU Russian Federation 45->63 65 80.85.241.193, 49837, 49839, 49840 MEDIAL-ASRU Russian Federation 45->65 57 C:\Users\user\AppData\Local\Temp\qsiyi.bat, DOS 45->57 dropped file15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4239478f1ff05d0014ba2492e155e733b661473d7299cbf98eb8f81bbf6e719a/
Threat name:
ByteCode-MSIL.Trojan.Nekark
Create hunting rule
Status:
Malicious
First seen:
2023-10-04 09:08:04 UTC
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ii4updy76boqaff2esjocvphgo3gcrz5okm4x6moxd4bxp3oogna._file
Verdict:
malicious
Similar samples:
05c4f71a5caa0ed6809fdfa57b44836f5ee6408d73f6b97cd9a751b696091101
Stealc
1ea413a774d50a0780285ae1fb0d85020be08e16cf2dedd167bbf6f966532d5c
Stealc
29f5a8629986da0b4a353e5423fb39c505cba7c06e7aa4b5a4029c5a1669ae95
Stealc
4a61cb1c1eedce4c2c9eed252e2c19497761337b40afaabb7585adfc1d273915
Stealc
59a5e46b3173bc33c36e91ea80c13771e4f760011e59d360f84070b72ebb28d0
Stealc
7f51dd699f733b774dcb7c6d3da1ac6d87a3bd7e7e6083eb9987b45fe0df72bf
Stealc
c694357039b48581bd903c728fb830250ce54699cf9a1da57de649ef2a9be897
Stealc
e3725f57d26d63fa6e326e5cc622d408ebb6eb9c2d7468eb34c3b79f42c07169
Stealc
+ 369 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/231004-kkwalsac4w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Executes dropped EXE
Unpacked files
SH256 hash:
5b05b55906abb8aa17633fc8c5c84beb3cbea825bdacf03202ef2a37b1e6c691
MD5 hash:
3e8f2b788c1e74804f55f75ea0d8e8c1
SHA1 hash:
f9e997c716fd348482876cb2002efa874fd3a7b3
Link:
https://www.unpac.me/results/1909f03a-dc82-4f75-8513-1e4ca16a2b74/
SH256 hash:
ecdffd15c3232628d95ed26b1abedb427274994e61eecc07cb1b508166f6c0da
MD5 hash:
1f331a49bbc4f701bbeaccaaac161325
SHA1 hash:
b7f6154fede8e5dda1a07dab55666c5bc7e9ce2f
Link:
https://www.unpac.me/results/1909f03a-dc82-4f75-8513-1e4ca16a2b74/
SH256 hash:
f7bea374dfa85d6c4dad78c3552d575a6226c38455d255ac29b572d446cb3de8
MD5 hash:
b7e429aa598191154189de0205ed198c
SHA1 hash:
584ab39b4c47899f7026e9ad707ede1e412a799f
Link:
https://www.unpac.me/results/1909f03a-dc82-4f75-8513-1e4ca16a2b74/
SH256 hash:
0afc6c1418601b92f96f37379898f4719d7468e51d914d5620fc0b2dbbf6c068
MD5 hash:
23b2b6a565a236ac5722a320bf594845
SHA1 hash:
43a3dc031a46719fe44e1a2868700f64fc6a76dd
Link:
https://www.unpac.me/results/1909f03a-dc82-4f75-8513-1e4ca16a2b74/
SH256 hash:
d988ed062800ffcbc131cf91badac0be4c82257b2b4980f5e41a7b9b27a76e6b
MD5 hash:
387302661cbcb2ee125fdcad5759dab2
SHA1 hash:
e7b520ce71edfdd08d885c0ba4cfa2dd86599cf1
Link:
https://www.unpac.me/results/1909f03a-dc82-4f75-8513-1e4ca16a2b74/
SH256 hash:
00f7418b48cd2954f7754fa5d491846064b1e5099d46d45e8872485aaa704f1e
MD5 hash:
710f3d5089dab7a5b9dee0cf494702d7
SHA1 hash:
c29eed6d1d303c9d6cf0187473cea0171e1b4794
Link:
https://www.unpac.me/results/1909f03a-dc82-4f75-8513-1e4ca16a2b74/
SH256 hash:
123d9654ca7bc2e2e0747e554b20b661b1e7d179a51d79edaeb6183e49802829
MD5 hash:
c17e871f54e49d945985a16df5449d2f
SHA1 hash:
b6dba9149c14a7e3233cbf507f5dc347231a915c
Link:
https://www.unpac.me/results/1909f03a-dc82-4f75-8513-1e4ca16a2b74/
SH256 hash:
c834236d8b628fbd9da49ed8280aa946d92d6afa19a5ae64febd661d420d375c
MD5 hash:
ae8bb31f132e65993d5c537ab765321d
SHA1 hash:
87010c497bda3283ebece8ebbd38624e61528a80
Link:
https://www.unpac.me/results/1909f03a-dc82-4f75-8513-1e4ca16a2b74/
SH256 hash:
4239478f1ff05d0014ba2492e155e733b661473d7299cbf98eb8f81bbf6e719a
MD5 hash:
0f1ff9db919b563b92454867c5a04733
SHA1 hash:
8df727d494b109818683f54efebd780d968babbc
Link:
https://www.unpac.me/results/1909f03a-dc82-4f75-8513-1e4ca16a2b74/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4239478f1ff0/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4239478f1ff05d0014ba2492e155e733b661473d7299cbf98eb8f81bbf6e719a

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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

Stealc

Executable exe 4239478f1ff05d0014ba2492e155e733b661473d7299cbf98eb8f81bbf6e719a

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2716311/

Comments


Avatar
zbet commented on 2023-10-04 08:39:50 UTC

url : hxxp://79.137.196.165/wsys.exe