MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 25b797aed9d1085093ed2fda3fec212d572d3086de9387f93511c9d2624c909a. 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: | 25b797aed9d1085093ed2fda3fec212d572d3086de9387f93511c9d2624c909a |
|---|---|
| SHA3-384 hash: | 4478bf0bc081a5c58b659c96d4b8c751fd2938bd8c5474c4f892cf2b63fe1d56a6d179ed8d28a29cc4edb0349ee2a791 |
| SHA1 hash: | 84969a0f84ea10432b78f13a95c6648e57465fc7 |
| MD5 hash: | 0cfadcd92623a5a2da7d2f661235c9be |
| humanhash: | xray-glucose-zulu-bulldog |
| File name: | 0cfadcd92623a5a2da7d2f661235c9be |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'042'432 bytes |
| First seen: | 2022-03-23 12:40:18 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:veBh33Fz4Z2RpLzxBBpIrmGJ6MuaQ90MyVxNlp0qsGYrgNwDpaLnHC7ZrPgfw8xb:meZ4txjpIrmMFpZtS3reudrD8b |
| TLSH | T184259C8A8632DE49EE6B3437C0077ED91E2F4C71C8A9386E5980B4911C7CDED85AF1E5 |
| File icon (PE): |  |
| dhash icon | 31f098b29298f031 (53 x AgentTesla, 30 x Formbook, 12 x RedLineStealer) |
| Reporter |  zbetcheckin |
| Tags: | 32 exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
198
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
ext.zip
Verdict:
Malicious activity
Analysis date:
2022-03-23 12:22:36 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader trojan formbook stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Launching a process
Creating a file
Searching for synchronization primitives
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.
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
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
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:
2022-03-23 12:41:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
20
AV detection:
19 of 26 (73.08%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
agenttesla
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:bffc 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
Blocklisted process makes network request
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:
4b69a15a74b2b3feb856372d30ef92371c7a8bee82e0c1a7e3e17c950de880d4
MD5 hash:
8c58047ab42ddea838113e21a6a52e50
SHA1 hash:
07c8ff28b7c745885ff591bce8ac54411e00cd88
SH256 hash:
70b785e5cb5b2e61c0f5da4a71ab0bbd14d9a0849387f037e0d75cc1ffe0a082
MD5 hash:
5951b52c9b4d11ca7f4f33e5a3fb2c31
SHA1 hash:
0bc54fd699fff7b93e5c447a141c0d904924ab0d
SH256 hash:
a34b33c1efd5b3854db5421f2db3bceaad6f96d6506c2a101252baf3b788fbb9
MD5 hash:
9233335fdec43a9cf7eb5570745b3973
SHA1 hash:
5ed2f70aa5b5861b9a8a9c7b8930981f67c1da34
SH256 hash:
fac317852849b7e6b176887ac461d041d8418e519287be0ae2292ef260ac3428
MD5 hash:
93e0b28d9567c9d01cc23ca7f97b9556
SHA1 hash:
18c897fd68a40a5da8b9c8ce052f25026442d2e8
Detections:
win_formbook_g0
win_formbook_auto
SH256 hash:
25b797aed9d1085093ed2fda3fec212d572d3086de9387f93511c9d2624c909a
MD5 hash:
0cfadcd92623a5a2da7d2f661235c9be
SHA1 hash:
84969a0f84ea10432b78f13a95c6648e57465fc7
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: | BitcoinAddress |
|---|---|
| Author: | Didier Stevens (@DidierStevens) |
| Description: | Contains a valid Bitcoin address |
| Rule name: | crime_win32_ransom_avaddon_1 |
|---|---|
| Author: | @VK_Intel |
| Description: | Detects Avaddon ransomware |
| Reference: | https://twitter.com/VK_Intel/status/1300944441390370819 |
| 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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You need to login to in order to write a comment. Login with your abuse.ch account.url : hxxp://180.214.237.206/protectdrive/vbc.exe