MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 657e0245d74e6c7b1c9df156b243b3b88cde2bda5a288f500056d77aa0b1ecf2. 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: 9
| SHA256 hash: | 657e0245d74e6c7b1c9df156b243b3b88cde2bda5a288f500056d77aa0b1ecf2 |
|---|---|
| SHA3-384 hash: | c071b91b6575a6d4a3d5b45752f4cd168f1cbb0f7ed16ff2736d83496fe7cc853fa628845bd6f7891d88f636348bc862 |
| SHA1 hash: | 8e3034e07f19c49ea6050e61b922c6893394dc31 |
| MD5 hash: | 28a4a0cb690136cc1f22d80c446e8ddd |
| humanhash: | spring-tennis-autumn-white |
| File name: | vbc.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 4'468'224 bytes |
| First seen: | 2022-04-01 20:25:19 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger) |
| ssdeep | 24576:TtpFmAt0mAotStqoTeo1TPFPyfuDlExuSUNfmfsa621L5C4y6vAfFcwF4SsG9E+5:EA28Sh0ujN752hyNtkSsL+lhDXYQ9 |
| Threatray | 12'212 similar samples on MalwareBazaar |
| TLSH | T1DA264B2453AC4CE6DAFE8331FC39943CF1F1AD59F294B3480559B1E85C79B44EA806BA |
| File icon (PE): |  |
| dhash icon | 31f0d8d6d6d870b3 (6 x Formbook, 5 x AveMariaRAT) |
| Reporter |  James_inthe_box |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
266
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Adding an access-denied ACE
Launching a process
Сreating synchronization primitives
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Reading critical registry keys
DNS request
Sending an HTTP GET request
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
control.exe expand.exe obfuscated replace.exe update.exe
Result
Verdict:
SUSPICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
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
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
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
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:
Threat name:
ByteCode-MSIL.Packed.Generic
Status:
Suspicious
First seen:
2022-04-01 20:19:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
13 of 26 (50.00%)
Threat level:
1/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 12'202 additional samples on MalwareBazaar
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:mwfc 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
Uses the VBS compiler for execution
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
657e0245d74e6c7b1c9df156b243b3b88cde2bda5a288f500056d77aa0b1ecf2
MD5 hash:
28a4a0cb690136cc1f22d80c446e8ddd
SHA1 hash:
8e3034e07f19c49ea6050e61b922c6893394dc31
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.
Delivery method
Other
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