MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 02be84308541ec4d7614933e6a4985c8fdc7213ab873e7ca5c0aabfe5356e473. 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


UmbralStealer


Vendor detections: 17


Intelligence 17 IOCs YARA 3 File information Comments
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SHA256 hash: 02be84308541ec4d7614933e6a4985c8fdc7213ab873e7ca5c0aabfe5356e473
SHA3-384 hash: 5b2b9c603f3017e5b019770710b6589e44149d388da2d61a8022087da399dc454f394f215dc1457d584adbe364bd0f4c
SHA1 hash: 750f15ec6e86e74ef852f7f43395145dbd873b98
MD5 hash: e458411c85a5aea36d6314e286bafdbf
humanhash: july-october-sink-monkey
File name:cum.exe
Download: download sample
Signature UmbralStealer
Create hunting rule
File size:7'575'552 bytes
First seen:2024-08-22 23:17:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 196608:tkpNA8RaKWfeYWBFrUpBfNNNAqvM4M+etNvdv:tkpNAGvHlSNhMH+oNV
TLSH T19C763327987BCF89EF2509783F78F923D82271744912CE9079C534F93AA9E9277074A4
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter adm1n_usa32
Tags:exe UmbralStealer xworm

Intelligence

File Origin
# of uploads :
1
# of downloads :
427
Origin country :
RO RO
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
cum.exe
Verdict:
Malicious activity
Analysis date:
2024-08-22 23:15:15 UTC
Tags:
evasion pyinstaller discord exfiltration stealer discordgrabber generic umbralstealer python
Link:
https://app.any.run/tasks/f08ba172-1181-440a-9354-25245aa1dc95

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.MulDrop23.34226.93.6301.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66c7c72db2a4681a72967e95
Tags:
Discovery Execution Generic Infostealer Network Other Stealth Trojan
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
DNS request
Connection attempt
Sending a custom TCP request
Launching a process
Enabling the 'hidden' option for recently created files
Searching for the window
Creating a file in the %temp% subdirectories
Using the Windows Management Instrumentation requests
Searching for synchronization primitives
Sending an HTTP GET request
Creating a process with a hidden window
Creating a window
Running batch commands
Unauthorized injection to a recently created process
Setting a global event handler for the keyboard
Adding an exclusion to Microsoft Defender
Changing the hosts file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/66c7c72b950c378bfba4c4e2/reports/ef31cbb7-4902-4c80-a6ab-6587515eeb2f/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/02be84308541ec4d7614933e6a4985c8fdc7213ab873e7ca5c0aabfe5356e473
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.
Malware family:
Sharp Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3a8f40de-be50-4936-9231-b1a9e99d635a
Result
Threat name:
Blank Grabber, Umbral Stealer, XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1497774
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Drops PE files to the startup folder
Drops PE files with a suspicious file extension
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Found pyInstaller with non standard icon
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the hosts file
Modifies Windows Defender protection settings
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Powershell Defender Disable Scan Feature
Sigma detected: Suspicious Startup Folder Persistence
Suricata IDS alerts for network traffic
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Uses attrib.exe to hide files
Uses ping.exe to check the status of other devices and networks
Yara detected Blank Grabber
Yara detected Generic Downloader
Yara detected Umbral Stealer
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1497774 Sample: cum.exe Startdate: 23/08/2024 Architecture: WINDOWS Score: 100 82 ip-api.com 2->82 84 discord.com 2->84 90 Suricata IDS alerts for network traffic 2->90 92 Found malware configuration 2->92 94 Malicious sample detected (through community Yara rule) 2->94 96 17 other signatures 2->96 10 cum.exe 4 2->10         started        signatures3 process4 file5 66 C:\Users\user\AppData\Roaming\lol.exe, PE32 10->66 dropped 68 C:\Users\user\AppData\...behaviorgraphenesis_Loader.exe, PE32 10->68 dropped 70 C:\Users\user\AppData\Local\...\cum.exe.log, CSV 10->70 dropped 13 Genesis_Loader.exe 4 10->13         started        17 lol.exe 15 14 10->17         started        process6 dnsIp7 72 C:\Users\user\AppData\Roaming\obf.exe, PE32 13->72 dropped 74 C:\Users\user\AppData\Roaming\Main (1).exe, PE32+ 13->74 dropped 112 Antivirus detection for dropped file 13->112 114 Machine Learning detection for dropped file 13->114 116 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 13->116 20 obf.exe 14 3 13->20         started        24 Main (1).exe 13 13->24         started        80 discord.com 162.159.135.232, 443, 49743, 49744 CLOUDFLARENETUS United States 17->80 76 C:\ProgramData\Microsoft\...\O8xsg.scr, PE32 17->76 dropped 78 C:\Windows\System32\drivers\etc\hosts, ASCII 17->78 dropped 118 Suspicious powershell command line found 17->118 120 Found many strings related to Crypto-Wallets (likely being stolen) 17->120 122 Drops PE files with a suspicious file extension 17->122 124 6 other signatures 17->124 27 cmd.exe 17->27         started        29 powershell.exe 17->29         started        31 attrib.exe 1 17->31         started        33 8 other processes 17->33 file8 signatures9 process10 dnsIp11 86 ip-api.com 208.95.112.1, 49731, 49740, 80 TUT-ASUS United States 20->86 88 10.9.92.54, 49739, 49741, 49742 unknown unknown 20->88 100 Antivirus detection for dropped file 20->100 102 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 20->102 104 Protects its processes via BreakOnTermination flag 20->104 110 5 other signatures 20->110 35 powershell.exe 20->35         started        38 powershell.exe 20->38         started        58 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 24->58 dropped 60 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 24->60 dropped 62 C:\Users\user\AppData\Local\...\python312.dll, PE32+ 24->62 dropped 64 7 other malicious files 24->64 dropped 40 conhost.exe 24->40         started        42 Main (1).exe 24->42         started        106 Uses ping.exe to check the status of other devices and networks 27->106 50 2 other processes 27->50 108 Loading BitLocker PowerShell Module 29->108 44 conhost.exe 29->44         started        46 conhost.exe 31->46         started        48 conhost.exe 33->48         started        52 7 other processes 33->52 file12 signatures13 process14 signatures15 98 Loading BitLocker PowerShell Module 35->98 54 conhost.exe 35->54         started        56 conhost.exe 38->56         started        process16
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/02be84308541ec4d7614933e6a4985c8fdc7213ab873e7ca5c0aabfe5356e473
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/02be84308541ec4d7614933e6a4985c8fdc7213ab873e7ca5c0aabfe5356e473/
Threat name:
ByteCode-MSIL.Spyware.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2024-08-22 23:18:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
26 of 38 (68.42%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ak7iimefihwe25qusm7gusmfzd64oij2xbz6pss4bkv74u2w4rzq._file
Verdict:
malicious
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:umbral family:xworm credential_access discovery execution pyinstaller rat spyware stealer trojan
Link:
https://tria.ge/reports/240822-299b7svgnj/
Behaviour
Detects videocard installed
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Detects Pyinstaller
Enumerates physical storage devices
System Network Configuration Discovery: Internet Connection Discovery
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Drops file in Drivers directory
Credentials from Password Stores: Credentials from Web Browsers
Detect Umbral payload
Detect Xworm Payload
Umbral
Xworm
Malware Config
C2 Extraction:
https://discord.com/api/webhooks/1276045605986107432/__jDxBNn4eIwDgfsF9Nvf_usMcbmRdQMO6KCi-9i1IoMGuWJto51uvjMtD8ys47YkqVM
10.9.92.54:80
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/58645bd7-93b1-4805-aa2c-94f1e89422b8
Unpacked files
SH256 hash:
b486197aa0e45a64681e66d42a3041461f5a665d24010f36d7d78dfeec828d4b
MD5 hash:
5c2b1ec1c68b749d6a276addd31460d7
SHA1 hash:
0a370422c2c29aed0d16e8012545e21197d21821
Detections:
win_xworm_w0
Create hunting rule
Link:
https://www.unpac.me/results/98c0a479-00ef-49bf-894a-da968fc02187/
SH256 hash:
02be84308541ec4d7614933e6a4985c8fdc7213ab873e7ca5c0aabfe5356e473
MD5 hash:
e458411c85a5aea36d6314e286bafdbf
SHA1 hash:
750f15ec6e86e74ef852f7f43395145dbd873b98
Link:
https://www.unpac.me/results/98c0a479-00ef-49bf-894a-da968fc02187/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/02be84308541/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.75
Link:
https://yomi.yoroi.company/submissions/02be84308541ec4d7614933e6a4985c8fdc7213ab873e7ca5c0aabfe5356e473

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: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.

anyrun
any.run
https://app.any.run/tasks/f08ba172-1181-440a-9354-25245aa1dc95

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

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