MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5c860b74570161b2dd12484a69682907e6f48b163094be586e06fad45d580a03. 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


MarsStealer


Vendor detections: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5c860b74570161b2dd12484a69682907e6f48b163094be586e06fad45d580a03
SHA3-384 hash: 73da15c07940cd614602fd0797df5f6360d649d7febcad2e316ad410b41c8610a611805c270527050996134177b8e401
SHA1 hash: 54c20e8c4cd9ea9bbc2ad0556a123ec83538010e
MD5 hash: 568ffcfaa64ab5839567cd712dc89f3f
humanhash: cardinal-twelve-sodium-florida
File name:CuteWriter.exe
Download: download sample
Signature MarsStealer
Create hunting rule
File size:9'299'456 bytes
First seen:2023-09-14 21:27:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 49152:Gdy+JISTQVusqLcj+Tc9X32FG4IQ8316uEtncZsdVby8kikrduPT803A7/01XB09:
TLSH T1A496382439FA501AB273EF994BE479EADA6FB7733B07646D105003864723981DEC163E
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 vovaan
Tags:binder exe MarsStealer marstealer

Intelligence

File Origin
# of uploads :
1
# of downloads :
334
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
CuteWriter.exe
Verdict:
No threats detected
Analysis date:
2023-09-14 21:30:17 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/cea43b6e-acb3-4d7b-97a4-588a80c32f16

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/448714/
Detection(s):
SecuriteInfo.com.Win32.DropperX-gen.8674.13663.UNOFFICIAL
Create hunting rule

Verdict:
No Threat
Threat level:
  10/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/65037ae39bae8a378557acad/reports/646f98a1-dc61-46ae-9546-b0bc8ea43ea3/overview
Verdict:
Malicious
Labled as:
MSIL.Binder.Generic
Link:
https://www.hybrid-analysis.com/sample/5c860b74570161b2dd12484a69682907e6f48b163094be586e06fad45d580a03
Result
Verdict:
MALICIOUS
Malware family:
Oski Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/039c4d8d-ae68-4a5c-875f-9c9790f6dcda
Result
Threat name:
Mars Stealer, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1308529
Signature
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Drops executable to a common third party application directory
Found evasive API chain (may stop execution after checking computer name)
Found evasive API chain (may stop execution after checking locale)
Found evasive API chain (may stop execution after checking mutex)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
PE file has a writeable .text section
PE file has nameless sections
Sample uses string decryption to hide its real strings
Yara detected Mars stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1308529 Sample: CuteWriter.exe Startdate: 15/09/2023 Architecture: WINDOWS Score: 76 77 googleads.g.doubleclick.net 2->77 93 Multi AV Scanner detection for domain / URL 2->93 95 Found malware configuration 2->95 97 Malicious sample detected (through community Yara rule) 2->97 99 11 other signatures 2->99 10 CuteWriter.exe 6 2->10         started        signatures3 process4 file5 57 C:\Users\user\AppData\...BZN043V.exe, PE32 10->57 dropped 59 C:\ProgramData\USOShared\BSAXEAOH.exe, PE32 10->59 dropped 101 Drops executable to a common third party application directory 10->101 14 EBZN043V.exe 12 10->14         started        18 BSAXEAOH.exe 2 10->18         started        21 conhost.exe 10->21         started        signatures6 process7 dnsIp8 91 www.criminalaffair.com 14->91 103 Found evasive API chain (may stop execution after checking mutex) 14->103 105 Found many strings related to Crypto-Wallets (likely being stolen) 14->105 107 Found evasive API chain (may stop execution after checking computer name) 14->107 109 2 other signatures 14->109 23 WerFault.exe 23 9 14->23         started        45 C:\Users\user\AppData\Local\...\BSAXEAOH.tmp, PE32 18->45 dropped 25 BSAXEAOH.tmp 5 59 18->25         started        file9 signatures10 process11 dnsIp12 79 192.168.2.1 unknown unknown 25->79 61 C:\Users\user\...\unInstcpw64.exe (copy), PE32+ 25->61 dropped 63 C:\Users\user\...\unInstcpw.exe (copy), PE32 25->63 dropped 65 C:\Users\user\...\pdfwriter64.exe (copy), PE32+ 25->65 dropped 67 31 other files (none is malicious) 25->67 dropped 29 Setup.exe 14 36 25->29         started        33 chrome.exe 25->33         started        file13 process14 dnsIp15 87 download.cutepdf.com 64.34.201.145, 49731, 80 COGECO-PEER1CA Canada 29->87 69 C:\Windows\System32\spool\...\PSCRIPT5.DLL, PE32+ 29->69 dropped 71 C:\Windows\System32\spool\...\PS5UI.DLL, PE32+ 29->71 dropped 73 C:\Users\user\AppData\Local\...\converter.exe, PE32 29->73 dropped 75 5 other files (none is malicious) 29->75 dropped 35 converter.exe 188 29->35         started        38 unInstcpw64.exe 29->38         started        40 splwow64.exe 29->40         started        89 239.255.255.250 unknown Reserved 33->89 42 chrome.exe 33->42         started        file16 process17 dnsIp18 47 C:\Users\user\AppData\Local\Temp\...\ps2ps, POSIX 35->47 dropped 49 C:\Users\user\AppData\Local\Temp\...\ps2pdfwr, POSIX 35->49 dropped 51 C:\Users\user\AppData\Local\Temp\...\ps2pdf14, POSIX 35->51 dropped 55 25 other files (none is malicious) 35->55 dropped 53 C:\Windows\System32\cpwmon64_v40.dll, PE32+ 38->53 dropped 81 8proof.com 52.116.53.150, 443, 49802 SOFTLAYERUS United States 42->81 83 www.googletagservices.com 142.251.32.66, 443, 49793, 49866 GOOGLEUS United States 42->83 85 13 other IPs or domains 42->85 file19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5c860b74570161b2dd12484a69682907e6f48b163094be586e06fad45d580a03/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2023-09-14 21:28:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
17 of 24 (70.83%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lsdaw5cxafq3fxisjbfgs2bja7tpjcywgckl4wdoa35nixkybibq._file
Verdict:
malicious
Result
Malware family:
marsstealer
Create hunting rule
Score:
  10/10
Tags:
family:marsstealer botnet:default stealer
Link:
https://tria.ge/reports/230914-1ba63sfa9w/
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Mars Stealer
Malware Config
C2 Extraction:
www.criminalaffair.com/07516e72fc86fad83aead3ae7.php
Unpacked files
SH256 hash:
2c7d09dfc689f605a07b29503cb190acd101b8329e702b9facd1f8c39d5d2229
MD5 hash:
50591f471a3a74c71bd8900c643d839c
SHA1 hash:
dcbf61b1fc44b230bb952ee20bfd595320d5fb24
Link:
https://www.unpac.me/results/29a440cb-e801-4df2-b376-3f0c5c868607/
SH256 hash:
42b360f633cc912b334de4474cabedf7bb0e0302ab81df1fcfe81b7a434af386
MD5 hash:
413ec76a7ef73fee287a6f93d0a98ecb
SHA1 hash:
b325765360fcb4ae88a1ba327d0dccdc1bb0ee7b
Link:
https://www.unpac.me/results/29a440cb-e801-4df2-b376-3f0c5c868607/
SH256 hash:
14d78fad011f829ebd59a8a59f11174659797ac39496488bca077c4a7f7c333b
MD5 hash:
942662d440555122cc9290ebcca8403a
SHA1 hash:
af6da94fc5cb5f84f6b93611cf9aa7e7d0ffd58c
Link:
https://www.unpac.me/results/29a440cb-e801-4df2-b376-3f0c5c868607/
SH256 hash:
25d618aa0096094a4cf99d45ef201f872f86f3170b037574aff33a62989e2158
MD5 hash:
315a26f8fadb0bb6aca4696f23ba295a
SHA1 hash:
7a899a2d7795bf87df7c83feb631464bfa92eae6
Link:
https://www.unpac.me/results/29a440cb-e801-4df2-b376-3f0c5c868607/
SH256 hash:
c9377bce4ebeb0111fc84795873d5a822ad8910a358198575d23c1e3bb56b130
MD5 hash:
85dcd5b1dada5be0e0187a500fb238a9
SHA1 hash:
44df717e7f25b82950d6c340fa7e6deed51025ad
Link:
https://www.unpac.me/results/29a440cb-e801-4df2-b376-3f0c5c868607/
SH256 hash:
32ef804c9ddf6f5a97291fc0a78efcc04849f5eb8aaf4d48fc3b04b419a148ed
MD5 hash:
a6d5b3988d10b2c887490b620a1cd96f
SHA1 hash:
e85752fef9b2d44bb2107608b66a8842f6122651
Link:
https://www.unpac.me/results/29a440cb-e801-4df2-b376-3f0c5c868607/
SH256 hash:
f8d598089792bdd068dac6a154cd493a46571534e459a39b0d364c293c50e5d3
MD5 hash:
c1069f68efef9dd3e29e578bbaa88aac
SHA1 hash:
6ac7853715db21754ca408e13620b87b252f838f
Link:
https://www.unpac.me/results/29a440cb-e801-4df2-b376-3f0c5c868607/
SH256 hash:
685b952c8ff800481bcc1cf6cff4ff5b1f200ae97ccedbe3a1cf8f0a5ca52291
MD5 hash:
1b9d4b52b2003a682ec39168d0e089cc
SHA1 hash:
a4f55b6326fedb1ea210f7946deac8d19bcf17ff
Link:
https://www.unpac.me/results/29a440cb-e801-4df2-b376-3f0c5c868607/
SH256 hash:
5c860b74570161b2dd12484a69682907e6f48b163094be586e06fad45d580a03
MD5 hash:
568ffcfaa64ab5839567cd712dc89f3f
SHA1 hash:
54c20e8c4cd9ea9bbc2ad0556a123ec83538010e
Link:
https://www.unpac.me/results/29a440cb-e801-4df2-b376-3f0c5c868607/
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/5c860b74570161b2dd12484a69682907e6f48b163094be586e06fad45d580a03

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:NET
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

MarsStealer

Executable exe 5c860b74570161b2dd12484a69682907e6f48b163094be586e06fad45d580a03

(this sample)

  
Link
http://www.criminalaffair.com/07516e72fc86fad83aead3ae7.php
  
Dropped by
marstealer
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/448714/

Comments