MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 42c22b1ceff07541d20717e8b9fea63a1418dc92917303cdcf48cce246a7d29f. 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: | 42c22b1ceff07541d20717e8b9fea63a1418dc92917303cdcf48cce246a7d29f |
|---|---|
| SHA3-384 hash: | 6d91a7839a7d3600030053dc114b1e09d0404b73e9426ff55a27cf4e37e7795caef1e1535bc04bfa43643ce391957a14 |
| SHA1 hash: | 420f8e73924b41e7d8d611d1e1ff45d3eb30f069 |
| MD5 hash: | a5918319b9726152ee735642741217d9 |
| humanhash: | nineteen-washington-jupiter-angel |
| File name: | a5918319b9726152ee735642741217d9 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 773'120 bytes |
| First seen: | 2022-03-12 06:55:35 UTC |
| Last seen: | 2022-03-12 08:42:57 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 12288:2GrueTZ76HkfSdOlIfNpwogeWlXHVHBr6uV/qQ24nqyhQqfsNkaKi9eC:3HZkkfypNpWeSHBrjV/q67hQvNkar9b |
| TLSH | T158F49D89A1840E90FB2FFBB5E2FD2938843135729B5B68152D511F810EE32709DBB56F |
| Reporter |  zbetcheckin |
| Tags: | 32 exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
251
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Сreating synchronization primitives
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Launching a process
Searching for synchronization primitives
Reading critical registry keys
Creating a file
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
obfuscated packed
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:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
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)
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
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:
formbook
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-03-12 06:56:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
22 of 40 (55.00%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
formbook
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:arh2 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:
42c22b1ceff07541d20717e8b9fea63a1418dc92917303cdcf48cce246a7d29f
MD5 hash:
a5918319b9726152ee735642741217d9
SHA1 hash:
420f8e73924b41e7d8d611d1e1ff45d3eb30f069
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: | BitcoinAddress |
|---|---|
| Author: | Didier Stevens (@DidierStevens) |
| Description: | Contains a valid Bitcoin address |
| 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
Comments
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