MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 88b89cfbfb1acd45472205f4cca9013ace78f1ef97c0a3007f4604904d32fb73. 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: 12


Intelligence 12 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 88b89cfbfb1acd45472205f4cca9013ace78f1ef97c0a3007f4604904d32fb73
SHA3-384 hash: 528325649594586279f57257d26933b99b686484bbe5ed68e5c07bd738cef24219890bb824411e3506253428a4aaf0f1
SHA1 hash: 8cf591e0997959f8a8df76fa12e6b0f6747c6b9c
MD5 hash: eef4506fa429532fdb0f3648e3971b2a
humanhash: emma-skylark-helium-harry
File name:88b89cfbfb1acd45472205f4cca9013ace78f1ef97c0a3007f4604904d32fb73
Download: download sample
Signature RustyStealer
Create hunting rule
File size:8'199'168 bytes
First seen:2024-10-17 07:06:36 UTC
Last seen:2024-10-17 07:39:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 313bee101a2d8b6978c2a31a286c9956 (1 x RustyStealer)
ssdeep 49152:1/gb2XD3nGmNxMyVtHaTJ29oTx/hwR6jKCT87F6ZUREXJifdHQOOt85OGsIf1aBO:6b2T5atlMxQj6OlIf1aG6p9DOl4ZU7n
Threatray 2 similar samples on MalwareBazaar
TLSH T13B869E13E9A41AF4D4ABCA34812E63317B717A9DD714CBB30A35C3716F52291EF0BA58
TrID 58.9% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
16.9% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
10.7% (.EXE) Win64 Executable (generic) (10522/11/4)
5.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
2.1% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter JAMESWT_WT
Tags:exe img-bilibili-buzz RustyStealer

Intelligence

File Origin
# of uploads :
2
# of downloads :
359
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
88b89cfbfb1acd45472205f4cca9013ace78f1ef97c0a3007f4604904d32fb73.exe
Verdict:
No threats detected
Analysis date:
2024-10-17 07:27:27 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e64e5163-7dcd-48c6-9cae-62a86039eeda

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.MalwareX-gen.30843.3326.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6710b79d707bcd8537fc246c
Tags:
Cobaltstrike Cobalt
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug crypt32 crypto lolbin obfuscated packed remote
Link:
https://www.filescan.io/uploads/6710b797b8693873ac83145f/reports/ea2b1290-b011-41d3-bb99-7fd552cbb895/overview
Verdict:
Suspicious
Labled as:
GrayWare/Wacapew
Link:
https://www.hybrid-analysis.com/sample/88b89cfbfb1acd45472205f4cca9013ace78f1ef97c0a3007f4604904d32fb73
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/7633bd41-b8de-4d1c-9912-fe88735f777d
Result
Threat name:
CobaltStrike
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1535737
Signature
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
Score:
94%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/88b89cfbfb1acd45472205f4cca9013ace78f1ef97c0a3007f4604904d32fb73
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/88b89cfbfb1acd45472205f4cca9013ace78f1ef97c0a3007f4604904d32fb73/
Threat name:
Win64.Backdoor.Cobeacon
Create hunting rule
Status:
Suspicious
First seen:
2024-10-16 04:38:55 UTC
File Type:
PE+ (Exe)
Extracted files:
6
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rc4jz673dlgukrzcax2mzkibhlhhr4pps7akgad7iycjatjs7nzq._file
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
Similar samples:
88b89cfbfb1acd45472205f4cca9013ace78f1ef97c0a3007f4604904d32fb73
RustyStealer
error
RustyStealer
f3b2f1ec49bf6fbd4fe9e28fb28e526da4c7fce85ac95f835d3dc343b872075d
RustyStealer
Result
Malware family:
cobaltstrike
Create hunting rule
Score:
  10/10
Tags:
family:cobaltstrike botnet:100000000 backdoor trojan
Link:
https://tria.ge/reports/241017-h3hq5axclh/
Behaviour
Suspicious use of WriteProcessMemory
Cobaltstrike
Malware Config
C2 Extraction:
http://img.bilibili.buzz:2096/jquery-3.3.1.min.js
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ef47b48c-03ab-4318-bbb3-5c3a5ec45c33
Unpacked files
SH256 hash:
88b89cfbfb1acd45472205f4cca9013ace78f1ef97c0a3007f4604904d32fb73
MD5 hash:
eef4506fa429532fdb0f3648e3971b2a
SHA1 hash:
8cf591e0997959f8a8df76fa12e6b0f6747c6b9c
Link:
https://www.unpac.me/results/6b60021c-d301-4470-b4d1-a858650b4493/
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/88b89cfbfb1acd45472205f4cca9013ace78f1ef97c0a3007f4604904d32fb73

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: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:ldpreload
Create hunting rule
Author:xorseed
Reference:https://stuff.rop.io/
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:reverse_http
Create hunting rule
Author:CD_R0M_
Description:Identify strings with http reversed (ptth)
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

File information

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

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 (GUARD_CF)high
Reviews
IDCapabilitiesEvidence
SHELL_APIManipulates System Shellshell32.dll::ShellExecuteW
SS_APIUses SS APIsecur32.dll::AcceptSecurityContext
secur32.dll::AcquireCredentialsHandleA
secur32.dll::ApplyControlToken
secur32.dll::DecryptMessage
secur32.dll::DeleteSecurityContext
secur32.dll::QueryContextAttributesW
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::CreateProcessW
advapi32.dll::OpenProcessToken
kernel32.dll::CloseHandle
kernel32.dll::CreateThread
WIN_BASE_APIUses Win Base APIkernel32.dll::TerminateProcess
kernel32.dll::LoadLibraryExW
kernel32.dll::GetSystemInfo
kernel32.dll::GetStartupInfoA
kernel32.dll::GetCommandLineW
WIN_BASE_EXEC_APICan Execute other programskernel32.dll::WriteConsoleW
kernel32.dll::FreeConsole
kernel32.dll::ReadConsoleW
kernel32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create Fileskernel32.dll::CopyFileExW
kernel32.dll::CreateDirectoryW
kernel32.dll::CreateHardLinkW
kernel32.dll::CreateFileMappingA
kernel32.dll::CreateFileW
ntdll.dll::NtCreateFile
WIN_BCRYPT_APICan Encrypt Filesbcrypt.dll::BCryptGenRandom
WIN_CRYPT_APIUses Windows Crypt APIcrypt32.dll::CertAddCertificateContextToStore
crypt32.dll::CertAddEncodedCertificateToStore
crypt32.dll::CertDeleteCertificateFromStore
crypt32.dll::CertDuplicateCertificateChain
crypt32.dll::CertDuplicateCertificateContext
crypt32.dll::CertDuplicateStore
WIN_REG_APICan Manipulate Windows Registryadvapi32.dll::RegOpenKeyExW
advapi32.dll::RegQueryInfoKeyW
advapi32.dll::RegQueryValueExW
WIN_SOCK_APIUses Network to send and receive dataws2_32.dll::accept
ws2_32.dll::bind
ws2_32.dll::closesocket
ws2_32.dll::connect
ws2_32.dll::freeaddrinfo
ws2_32.dll::getaddrinfo

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