MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a08b846be9052a2614ef6a6920260d465774f5da9926f6d08449a2e4eb27b787. 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


Formbook


Vendor detections: 16


Intelligence 16 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a08b846be9052a2614ef6a6920260d465774f5da9926f6d08449a2e4eb27b787
SHA3-384 hash: d906c43635ba1f06aefaeb5f4cd5d1a7217cdefb117478b58f5384cb488a978ac0aa8ecfc66eb1905eb2f0e396415ca1
SHA1 hash: 378ba02b08494b36ff5a2674cf99eba6c7025d6a
MD5 hash: 148ec472df90b0fb274c3ce2ad2e811f
humanhash: ceiling-quebec-muppet-lemon
File name:x433.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:780'288 bytes
First seen:2024-07-01 22:29:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'454 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:0sjApTtnb0TbQxMM90CL7VmADH2eJGCOTJfVXwAfIXZqPtbxZWdezgrrNo02UBYW:djuTt4TbQRjDH2eJQTNqcWOVZK1y02UH
TLSH T1B8F433785B692367D66EE6B900727E21DF53EC3B4789769A04182F162C50ECCA03F793
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)
Reporter Chainskilabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
376
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a08b846be9052a2614ef6a6920260d465774f5da9926f6d08449a2e4eb27b787.exe
Verdict:
Malicious activity
Analysis date:
2024-07-02 05:44:16 UTC
Tags:
expiro sinkhole evasion rat darkgate spyware loader m0yv
Link:
https://app.any.run/tasks/4fdbd898-7831-4e83-9263-c29b95a918cf

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.MulDrop20.16243.28197.31082.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66832e2dbe8570b8fa89045ewin10vpnfull_triage
Tags:
Encryption Execution Network Stealth Trojan Dropper
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending an HTTP GET request
Creating a window
Connection attempt to an infection source
Creating a file in the Windows subdirectories
Sending a TCP request to an infection source
Launching a process
Creating a file in the system32 subdirectories
Forced system process termination
Setting browser functions hooks
Possible injection to a system process
Сreating synchronization primitives
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Creating a file in the %AppData% directory
Modifying an executable file
Launching a service
Searching for synchronization primitives
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Unauthorized injection to a recently created process
Enabling autorun for a service
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Infecting executable files
Enabling autorun by creating a file
Using obfuscated Powershell scripts
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed vbnet
Link:
https://www.filescan.io/uploads/66832dedeae3878d8f3c60e3/reports/d4618379-211b-4a4d-b987-fab9afb41899/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a08b846be9052a2614ef6a6920260d465774f5da9926f6d08449a2e4eb27b787
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:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/14e99b10-2f6c-4f3a-8361-b3b62e5065b6
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1465714
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains process injector
.NET source code references suspicious native API functions
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Connects to many ports of the same IP (likely port scanning)
Contains functionality to capture screen (.Net source)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to compare user and computer (likely to detect sandboxes)
Contains functionality to inject code into remote processes
Creates a thread in another existing process (thread injection)
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Hooks files or directories query functions (used to hide files and directories)
Hooks processes query functions (used to hide processes)
Hooks registry keys query functions (used to hide registry keys)
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Installs new ROOT certificates
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
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: Potential PowerShell Command Line Obfuscation
Sigma detected: Potential WinAPI Calls Via CommandLine
Snort IDS alert for network traffic
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Very long command line found
Writes to foreign memory regions
Yara detected Generic Downloader
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1465714 Sample: x433.exe Startdate: 02/07/2024 Architecture: WINDOWS Score: 100 49 session-chief.gl.at.ply.gg 2->49 51 ip-api.com 2->51 75 Snort IDS alert for network traffic 2->75 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 24 other signatures 2->81 8 x433.exe 4 2->8         started        12 powershell.exe 2 15 2->12         started        14 x4usb.exe 2->14         started        signatures3 process4 file5 39 C:\Users\user\AppData\Local\Temp\x4host.exe, PE32 8->39 dropped 41 C:\Users\user\AppData\...\x4Shellcode.exe, PE32 8->41 dropped 43 C:\Users\user\AppData\Local\...\x433.exe.log, CSV 8->43 dropped 83 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->83 16 x4host.exe 16 5 8->16         started        21 x4Shellcode.exe 1 1 8->21         started        85 Writes to foreign memory regions 12->85 87 Modifies the context of a thread in another process (thread injection) 12->87 89 Found suspicious powershell code related to unpacking or dynamic code loading 12->89 91 Injects a PE file into a foreign processes 12->91 23 dllhost.exe 1 12->23         started        25 conhost.exe 12->25         started        93 Antivirus detection for dropped file 14->93 95 Multi AV Scanner detection for dropped file 14->95 97 Machine Learning detection for dropped file 14->97 signatures6 process7 dnsIp8 45 ip-api.com 208.95.112.1, 49730, 80 TUT-ASUS United States 16->45 47 session-chief.gl.at.ply.gg 147.185.221.20, 36125, 49731, 49732 SALSGIVERUS United States 16->47 37 C:\Users\user\AppData\Local\x4usb.exe, PE32 16->37 dropped 57 Antivirus detection for dropped file 16->57 59 Multi AV Scanner detection for dropped file 16->59 61 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 16->61 71 3 other signatures 16->71 63 Machine Learning detection for dropped file 21->63 65 Injects code into the Windows Explorer (explorer.exe) 23->65 67 Contains functionality to inject code into remote processes 23->67 69 Writes to foreign memory regions 23->69 73 3 other signatures 23->73 27 lsass.exe 23->27 injected 30 svchost.exe 23->30 injected 33 winlogon.exe 23->33 injected 35 30 other processes 23->35 file9 signatures10 process11 dnsIp12 99 Installs new ROOT certificates 27->99 101 Writes to foreign memory regions 27->101 53 192.168.2.10 unknown unknown 30->53 55 192.168.2.7 unknown unknown 30->55 signatures13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a08b846be9052a2614ef6a6920260d465774f5da9926f6d08449a2e4eb27b787
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a08b846be9052a2614ef6a6920260d465774f5da9926f6d08449a2e4eb27b787/
Threat name:
ByteCode-MSIL.Trojan.XWormRAT
Create hunting rule
Status:
Malicious
First seen:
2024-06-30 16:34:35 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ucfyi27jauvcmfhpnjusajqnizlxj5o2tetpnueejgroj2zhw6dq._file
Verdict:
malicious
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm bootkit evasion persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/240701-2ese7sxfjk/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy service COM API
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Adds Run key to start application
Enumerates connected drives
Looks up external IP address via web service
Writes to the Master Boot Record (MBR)
Checks BIOS information in registry
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Sets service image path in registry
Detect Xworm Payload
Modifies security service
Suspicious use of NtCreateUserProcessOtherParentProcess
Xworm
Malware Config
C2 Extraction:
session-chief.gl.at.ply.gg:36125
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e19b8b36-686d-4d18-9986-aebdc8dc4bc9
Unpacked files
SH256 hash:
abdd6f31a909b0b10e30ced74a1f6f037adf1f61a8a842048dbc254d6f076169
MD5 hash:
c33a7f0e25bb3f4d3c19fc8441e9d12b
SHA1 hash:
0286b277e97b9f7c217a0d029e8144f8e20b40b9
Link:
https://www.unpac.me/results/482c0aca-3cf9-4724-9672-417585ca637d/
SH256 hash:
d2fd71588dd2d33c5ad58c1a5382de38227ad86092cae7401ee95c7701282730
MD5 hash:
fd744070409a72b86cc2b344d1719b33
SHA1 hash:
d58ded881812057a3b51e6f753ffbfe243af112e
Detections:
MALWARE_Win_XWorm
Create hunting rule
win_mal_XWorm
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
MALWARE_Win_AsyncRAT
Create hunting rule
Link:
https://www.unpac.me/results/482c0aca-3cf9-4724-9672-417585ca637d/
SH256 hash:
ba2d2058ab95d39a9c05c9c74dfa7c860cc662f33ecd96c35f2c344666472197
MD5 hash:
851be4e85b0f111883680e87099483a3
SHA1 hash:
155e19ad0d2ec4bef3ba25512b6e8bc403350ec9
Link:
https://www.unpac.me/results/482c0aca-3cf9-4724-9672-417585ca637d/
SH256 hash:
c70f8a2f09f1cfe10e0b92c215529c6fb0c0e123e5f0a2bfbb921d7f616e729a
MD5 hash:
031e11cc8a01d180b5dc4762ab6e7cc4
SHA1 hash:
a27c80f75cb1ff64c46d54f3992d4add1e51b5e7
Link:
https://www.unpac.me/results/482c0aca-3cf9-4724-9672-417585ca637d/
SH256 hash:
50643eaeb12a414d16673465e2f0bf4d16692b3237fc4723b64a5e03e1d10c3f
MD5 hash:
58ee8c9cd6d09b3f3359144e24e1c933
SHA1 hash:
ea5f28472586fe5169e3d764b3876822410c78bb
Link:
https://www.unpac.me/results/482c0aca-3cf9-4724-9672-417585ca637d/
SH256 hash:
a08b846be9052a2614ef6a6920260d465774f5da9926f6d08449a2e4eb27b787
MD5 hash:
148ec472df90b0fb274c3ce2ad2e811f
SHA1 hash:
378ba02b08494b36ff5a2674cf99eba6c7025d6a
Link:
https://www.unpac.me/results/482c0aca-3cf9-4724-9672-417585ca637d/
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/a08b846be9052a2614ef6a6920260d465774f5da9926f6d08449a2e4eb27b787

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:NETexecutableMicrosoft
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.

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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