MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 98c9c20fcffa6fe99c0841a33f4a9283552b9393d958818b9b2b610d5467822e. 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: 13
| SHA256 hash: | 98c9c20fcffa6fe99c0841a33f4a9283552b9393d958818b9b2b610d5467822e |
|---|---|
| SHA3-384 hash: | 31d423d3c798bf764fcf332a9a70311e83ae9738836f8075bd8dca498c0470949c4f97506a59984003a0e75c8362ef61 |
| SHA1 hash: | cf217d41e06f4c35eb00e8ad95bbfcd419a75424 |
| MD5 hash: | 5c4dd55a06141f850ddcedb9253ed84c |
| humanhash: | dakota-batman-william-fifteen |
| File name: | 5c4dd55a06141f850ddcedb9253ed84c |
| Download: | download sample |
| Signature | Formbook |
| File size: | 775'168 bytes |
| First seen: | 2022-03-08 18:16:32 UTC |
| Last seen: | 2022-03-08 19:51:29 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:2PveLYfblXFoMLSSMPxX5454lshc1vm+y4MRx1uwRWh7j4b0Kw49keNR8he/OAC2:I1dFoMOSMPxO6qhc1vm+yFx1u0x1X+ha |
| Threatray | 10'670 similar samples on MalwareBazaar |
| TLSH | T138F48DACBB482B9AEF901AE2899650463D20374CA1CED6312F8FDE50F0E6C75597435F |
| Reporter |  zbetcheckin |
| Tags: | 32 exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
220
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
encrypted
ID:
1
File name:
60fcf19d11208963f722192d0ba0d76d.zip
Verdict:
Malicious activity
Analysis date:
2022-03-08 12:49:10 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Launching a process
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
obfuscated packed
Result
Verdict:
UNKNOWN
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:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Detection:
xloader
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-03-08 18:17:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
23 of 27 (85.19%)
Threat level:
5/5
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 10'660 additional samples on MalwareBazaar
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:p2a5 evasion loader persistence rat spyware stealer
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Maps connected drives based on registry
Checks BIOS information in registry
Reads user/profile data of web browsers
Executes dropped EXE
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
Xloader Payload
Xloader
Unpacked files
SH256 hash:
98c9c20fcffa6fe99c0841a33f4a9283552b9393d958818b9b2b610d5467822e
MD5 hash:
5c4dd55a06141f850ddcedb9253ed84c
SHA1 hash:
cf217d41e06f4c35eb00e8ad95bbfcd419a75424
Malware family:
XLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
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: | malware_Formbook_strings |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Formbook in memory |
| Reference: | internal research |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | win_formbook_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.formbook. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
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