MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 5598831a8a17b53751f4c34112c7c4b42d4906a6e73d60018ae8d499ce605580. 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: 15
| SHA256 hash: | 5598831a8a17b53751f4c34112c7c4b42d4906a6e73d60018ae8d499ce605580 |
|---|---|
| SHA3-384 hash: | ce299d4a6304f608ddfc614c7d475e29d149b4c922a4497cd1cd581c7f0d4100356ebc42a8f15f491391a10eb448ec67 |
| SHA1 hash: | 5c3437b790aaca62b048c38f53584aedb6aaa118 |
| MD5 hash: | 953708e0cefbd35c124e526d9f7bd4d2 |
| humanhash: | football-mango-magazine-glucose |
| File name: | 953708e0cefbd35c124e526d9f7bd4d2 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 722'944 bytes |
| First seen: | 2022-02-23 13:28:40 UTC |
| Last seen: | 2022-02-23 16:20:32 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 12288:Wmh4J9EAXNRFkrYEID7STduSghxtH9Gr0UdSKhbXeU9ouJ91ds6xEk5oU:NIaKhceUJhJSU |
| Threatray | 13'554 similar samples on MalwareBazaar |
| TLSH | T1DEF4A92A38AA100DF262AD7C6BBCB175911EF7F226365CB70DF7050A11129F0DB9D627 |
| Reporter |  zbetcheckin |
| Tags: | 32 exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
189
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
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:
control.exe obfuscated packed replace.exe
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.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Benign windows process drops PE files
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Application Executed Non-Executable Extension
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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 virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Detection:
xloader
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-02-23 08:26:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
22 of 28 (78.57%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 13'544 additional samples on MalwareBazaar
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:vfm2 loader rat suricata
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
7033acba885492417aa1cbb186c2eefd76f3f59ffdb9b44eea7825f77808c2ca
MD5 hash:
4bf00f15b48fbd901066c5c39fc92731
SHA1 hash:
bd70b34970a5e4abe01dd9e7de335db27231f01f
SH256 hash:
e7938db74b624b1bf7de3a9a5bddc37d20541cb28dc189fa21580c9f2344e9ad
MD5 hash:
ad0b2e934012f4b2a0cd14a0d87aa372
SHA1 hash:
4ee150baf9943031ee2837240d70e895f0df37f4
Detections:
win_formbook_g0
win_formbook_auto
SH256 hash:
5598831a8a17b53751f4c34112c7c4b42d4906a6e73d60018ae8d499ce605580
MD5 hash:
953708e0cefbd35c124e526d9f7bd4d2
SHA1 hash:
5c3437b790aaca62b048c38f53584aedb6aaa118
Malware family:
XLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
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: | 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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