MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4ba70a201f9aeed927954ccf79ebba102df5f50c437c278636b1905b3f71058f. 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: 12
| SHA256 hash: | 4ba70a201f9aeed927954ccf79ebba102df5f50c437c278636b1905b3f71058f |
|---|---|
| SHA3-384 hash: | fec7872ebfb6781af4b1de07bd8bf8bc16d8ee2c8478ed14efa79bad88030d09aac592ffd173e623380b298ed41c11cc |
| SHA1 hash: | 5336d3df0209627b48ea4ecffbb7186dd3f84671 |
| MD5 hash: | bcad1b4b7045b6a547d9994e04356561 |
| humanhash: | lactose-arkansas-salami-mexico |
| File name: | bcad1b4b7045b6a547d9994e04356561 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 924'672 bytes |
| First seen: | 2022-03-21 10:10:18 UTC |
| Last seen: | 2022-03-21 14:05:19 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger) |
| ssdeep | 24576:EfxgkRKxfYnmbcCkJ6y5jBlQtxGMCL8h:COkQVOpzY |
| TLSH | T126158D3AB7E1A612D9B309B234A4049082F57CCAE5B7D4FC8A5CACAC3575C4EC13D75A |
| Reporter |  zbetcheckin |
| Tags: | 32 exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
235
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Launching a process
Сreating synchronization primitives
Creating a file
Launching cmd.exe command interpreter
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Searching for synchronization primitives
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
obfuscated packed remote.exe update.exe
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.adwa.expl.evad
Score:
100 / 100
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Found malware configuration
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 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
Uses ping.exe to check the status of other devices and networks
Yara detected AntiVM3
Yara detected FormBook
Yara detected Shellcode strings
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Detection:
xloader
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-03-21 10:11:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
20 of 27 (74.07%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
formbook
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:rzwo evasion loader rat suricata
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
4ba70a201f9aeed927954ccf79ebba102df5f50c437c278636b1905b3f71058f
MD5 hash:
bcad1b4b7045b6a547d9994e04356561
SHA1 hash:
5336d3df0209627b48ea4ecffbb7186dd3f84671
Malware family:
XLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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 |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
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
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