MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 87eefc3270fefac96226245ab6d36360e379caea5e93060082ec31dcc8b823ed. 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


PureCrypter


Vendor detections: 14


Intelligence 14 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 87eefc3270fefac96226245ab6d36360e379caea5e93060082ec31dcc8b823ed
SHA3-384 hash: b5a75459f7994ab76b7595aa54275353fe9018ffb3dc7bf42d9fd339012a1b02b921882481f60263304d61d1b29b8320
SHA1 hash: 10584f68f3f4aca0e3a1a426495f29b8823a2c1f
MD5 hash: b48c9f368745e6d89288bd4d40f3aade
humanhash: bravo-helium-kilo-eleven
File name:87eefc3270fefac96226245ab6d36360e379caea5e93060082ec31dcc8b823ed
Download: download sample
Signature PureCrypter
Create hunting rule
File size:1'213'056 bytes
First seen:2024-12-18 08:18:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash c2c7c2a6f9720bd42ba4f057811dbee8 (3 x LummaStealer, 1 x PureCrypter)
ssdeep 24576:KwpOrt477q5ltoeMyOxVBQAFMs0Se2gcxKXLMw/8BHzqFNuBBUr7v:KwP7mleBxVBQAF10l2gcxK7hgzqFN5
TLSH T13045E141F0D390A3F9A321B03378D1A96826F7F3E72849CF5274DB5465AAAD7057222F
TrID 49.9% (.EXE) Win64 Executable (generic) (10522/11/4)
21.3% (.EXE) Win32 Executable (generic) (4504/4/1)
9.6% (.EXE) OS/2 Executable (generic) (2029/13)
9.5% (.EXE) Generic Win/DOS Executable (2002/3)
9.4% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter JAMESWT_WT
Tags:139-99-188-124 exe purecrypter

Intelligence

File Origin
# of uploads :
1
# of downloads :
396
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
032fbff0c808c0de5d363a06a2dad711486cc4d05642858190cc3f8b0b56ba2e
Verdict:
Malicious activity
Analysis date:
2024-12-18 08:20:08 UTC
Tags:
rat asyncrat remote stealer netreactor evasion discord purehvnc arch-doc nodejs
Link:
https://app.any.run/tasks/1f47ea27-99d1-4061-84d5-dfe94ac31476

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PWS.Steam.37803.26510.22217.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67628662653a8698dfda6a96
Tags:
injection virus agent
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
Connection attempt
Sending a custom TCP request
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fingerprint microsoft_visual_cc packed packed packer_detected
Link:
https://www.filescan.io/uploads/6762857941118fded02e0771/reports/0a97fb3b-1d8d-4b20-8a88-decd50638540/overview
Verdict:
Malicious
Labled as:
Trojan.Stelpak
Link:
https://www.hybrid-analysis.com/sample/87eefc3270fefac96226245ab6d36360e379caea5e93060082ec31dcc8b823ed
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/1886c6ce-99a6-43b5-bbee-11e220583483
Result
Threat name:
PureCrypter
Create hunting rule
Detection:
malicious
Classification:
spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1577207
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Contains functionality to inject code into remote processes
Detected PureCrypter Trojan
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Queries memory information (via WMI often done to detect virtual machines)
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive physical memory information (via WMI, Win32_PhysicalMemory, often done to detect virtual machines)
Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
Suricata IDS alerts for network traffic
Tries to harvest and steal Bitcoin Wallet information
Writes to foreign memory regions
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1577207 Sample: JnEZtj3vtN.exe Startdate: 18/12/2024 Architecture: WINDOWS Score: 100 24 Suricata IDS alerts for network traffic 2->24 26 Antivirus / Scanner detection for submitted sample 2->26 28 Multi AV Scanner detection for submitted file 2->28 30 5 other signatures 2->30 6 JnEZtj3vtN.exe 1 2->6         started        process3 signatures4 32 Found many strings related to Crypto-Wallets (likely being stolen) 6->32 34 Contains functionality to inject code into remote processes 6->34 36 Writes to foreign memory regions 6->36 38 2 other signatures 6->38 9 MSBuild.exe 6->9         started        12 MSBuild.exe 2 6->12         started        15 WerFault.exe 19 16 6->15         started        18 conhost.exe 6->18         started        process5 dnsIp6 40 Queries sensitive physical memory information (via WMI, Win32_PhysicalMemory, often done to detect virtual machines) 9->40 42 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 9->42 44 Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines) 9->44 46 Queries memory information (via WMI often done to detect virtual machines) 9->46 22 139.99.188.124, 49713, 56001 OVHFR Canada 12->22 48 Found many strings related to Crypto-Wallets (likely being stolen) 12->48 50 Tries to harvest and steal Bitcoin Wallet information 12->50 52 Detected PureCrypter Trojan 12->52 20 C:\ProgramData\Microsoft\...\Report.wer, Unicode 15->20 dropped file7 signatures8
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/87eefc3270fefac96226245ab6d36360e379caea5e93060082ec31dcc8b823ed
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/87eefc3270fefac96226245ab6d36360e379caea5e93060082ec31dcc8b823ed/
Threat name:
Win32.Trojan.LummaStealer
Create hunting rule
Status:
Malicious
First seen:
2024-11-09 22:26:44 UTC
File Type:
PE (Exe)
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=q7xpymtq735msyrgernlnu3dmdrxtsxkl2jqmaec5qy5zsfyepwq._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/241218-j7vrxs1let/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/72f4d8d6-5936-4dc5-9048-01fc5dc37390
Unpacked files
SH256 hash:
ced3f6810398b5900073f878d2c3cf57395599ac23ee5cf7b5bfa015e0f8e474
MD5 hash:
660107ff528fd194d5c97161a1eaca76
SHA1 hash:
e5db46c700adc99dd72238484c407058c274f4a4
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/198a24f0-dcf7-4cba-9cef-6a0f3b1f1b48/
SH256 hash:
87eefc3270fefac96226245ab6d36360e379caea5e93060082ec31dcc8b823ed
MD5 hash:
b48c9f368745e6d89288bd4d40f3aade
SHA1 hash:
10584f68f3f4aca0e3a1a426495f29b8823a2c1f
Link:
https://www.unpac.me/results/198a24f0-dcf7-4cba-9cef-6a0f3b1f1b48/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/87eefc3270fe/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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 (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineA
KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AddClipboardFormatListener

Comments