MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37c52481711631a5c73a6341bd8bea302ad57f02199db7624b580058547fb5a9. 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


RustyStealer


Vendor detections: 10


Intelligence 10 IOCs YARA 13 File information Comments
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SHA256 hash: 37c52481711631a5c73a6341bd8bea302ad57f02199db7624b580058547fb5a9
SHA3-384 hash: ea965103a11ae1cfc6c8f3fb2c58e3280e01a83a152cc9c15211e6429960c975e5c203f5f94a1782227ef82f9079e227
SHA1 hash: a1b2b1c4995ba4665d4db71653037f3075e111fb
MD5 hash: 3ab86f13c521e72bf4e8475ccd1e62e3
humanhash: one-diet-stairway-london
File name:Proton-decrypter.exe
Download: download sample
Signature RustyStealer
Create hunting rule
File size:6'991'872 bytes
First seen:2024-01-19 08:30:53 UTC
Last seen:2024-01-19 10:30:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash c5bf716b2515a99af847cc38764c56c4 (1 x RustyStealer)
ssdeep 49152:5vdi5Ifm0OErygxEb6Ns/CRptmctcmZxDit3KowoLGi9VDUIvR62BZrXDbS06DSi:cIHO7cifwIvRtSjRWipG5YF+Oz
TLSH T1E1665B157A5A58ADC05BC474864B8B635A3138CA0B35BAFF44C4A6383F6ABF12F3D354
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 113575495555753b (1 x RustyStealer)
Reporter cxiao
Tags:COLDRIVER exe RustyStealer SPICA

Intelligence

File Origin
# of uploads :
2
# of downloads :
224
Origin country :
DE DE
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/471627/
Detection(s):
SecuriteInfo.com.Win64.Trojan.Agent.0EB4JO.7515.3466.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
DNS request
Сreating synchronization primitives
Creating a file
Running batch commands
Launching a process
Creating a window
Searching for synchronization primitives
Moving of the original file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm crypto
Link:
https://www.filescan.io/uploads/65aa334ae1815911f16a354f/reports/adf3c451-fe20-4376-a0d4-cce61e16f487/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/37c52481711631a5c73a6341bd8bea302ad57f02199db7624b580058547fb5a9
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/31157867-7699-405d-9196-408f496ef328
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1377282
Signature
Antivirus detection for URL or domain
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Queries BIOS fan information (via WMI, Win32_Fan, often done to detect virtual machines)
Suspicious powershell command line found
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1377282 Sample: Proton-decrypter.exe Startdate: 19/01/2024 Architecture: WINDOWS Score: 76 47 one.one.one.one 2->47 53 Antivirus detection for URL or domain 2->53 55 Multi AV Scanner detection for submitted file 2->55 57 Machine Learning detection for sample 2->57 10 Proton-decrypter.exe 2 1 2->10         started        14 Proton-decrypter.exe 2->14         started        signatures3 process4 dnsIp5 49 45.133.216.15, 3000, 49745, 49746 CLOUDSOLUTIONSRU Russian Federation 10->49 59 Suspicious powershell command line found 10->59 61 Uses schtasks.exe or at.exe to add and modify task schedules 10->61 63 Tries to detect virtualization through RDTSC time measurements 10->63 16 cmd.exe 3 2 10->16         started        18 powershell.exe 37 10->18         started        20 schtasks.exe 1 10->20         started        65 Queries BIOS fan information (via WMI, Win32_Fan, often done to detect virtual machines) 14->65 22 schtasks.exe 14->22         started        24 schtasks.exe 14->24         started        26 powershell.exe 14->26         started        signatures6 process7 process8 28 Acrobat.exe 20 76 16->28         started        30 conhost.exe 16->30         started        32 conhost.exe 18->32         started        34 conhost.exe 20->34         started        36 conhost.exe 22->36         started        38 conhost.exe 24->38         started        40 conhost.exe 26->40         started        process9 42 AcroCEF.exe 72 28->42         started        process10 44 AcroCEF.exe 2 42->44         started        dnsIp11 51 23.62.208.138, 443, 49739 GTT-BACKBONEGTTDE United States 44->51
Score:
89%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/37c52481711631a5c73a6341bd8bea302ad57f02199db7624b580058547fb5a9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/37c52481711631a5c73a6341bd8bea302ad57f02199db7624b580058547fb5a9/
Threat name:
Win64.Spyware.Rustystealer
Create hunting rule
Status:
Malicious
First seen:
2024-01-18 18:15:43 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
14 of 23 (60.87%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=g7csjalrcyy2lrz2mna33c7kgavnk7ycdgo3oysllaafqvd7wwuq._file
Verdict:
unknown
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://tria.ge/reports/240119-kep7eaagf7/
Behaviour
Kills process with taskkill
Modifies registry class
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Drops file in Windows directory
Enumerates connected drives
Unpacked files
SH256 hash:
37c52481711631a5c73a6341bd8bea302ad57f02199db7624b580058547fb5a9
MD5 hash:
3ab86f13c521e72bf4e8475ccd1e62e3
SHA1 hash:
a1b2b1c4995ba4665d4db71653037f3075e111fb
Detections:
INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
Link:
https://www.unpac.me/results/8d99af5a-50c2-4f52-b2cf-e4c8e09a6cee/
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/37c52481711631a5c73a6341bd8bea302ad57f02199db7624b580058547fb5a9

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:Check_OutputDebugStringA_iat
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Rule name:command_and_control
Create hunting rule
Author:CD_R0M_
Description:This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:reverse_http
Create hunting rule
Author:CD_R0M_
Description:Identify strings with http reversed (ptth)
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:Rustyloader_mem_loose
Create hunting rule
Author:James_inthe_box
Description:Corroded buerloader
Reference:https://app.any.run/tasks/83064edd-c7eb-4558-85e8-621db72b2a24
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:upxHook
Create hunting rule
Author:@r3dbU7z
Description:Detect artifacts from 'upxHook' - modification of UPX packer
Reference:https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/

File information

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

Web download

RustyStealer

Executable exe 37c52481711631a5c73a6341bd8bea302ad57f02199db7624b580058547fb5a9

(this sample)

  
Link
https://blog.google/threat-analysis-group/google-tag-coldriver-russian-phishing-malware/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/471627/

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