MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8e4143a9ffed1acc96cdc70176be108a068d489ca7a742c79872aea81d076945. 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: | 8e4143a9ffed1acc96cdc70176be108a068d489ca7a742c79872aea81d076945 |
|---|---|
| SHA3-384 hash: | 42e1276b3a404bd3e0fdcebbf7f30fef2e47015b43abbd11f8b1b46ad0a0c18dafcc899b39dbe591fe3b527b4633a839 |
| SHA1 hash: | ddb13bee7d0895f8e6a99887ceb2036703cddf6b |
| MD5 hash: | fafd0bafbedee896cadc046e04f6e676 |
| humanhash: | triple-south-ten-ten |
| File name: | Doc_TekT_0136205,pdf.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'110'016 bytes |
| First seen: | 2022-03-16 07:22:56 UTC |
| Last seen: | 2022-04-20 10:25:30 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 24576:4JwmhB7v43LfiqBgke4YthQO826Gt9Tmdj6pxkix:4Jw2B7uf6kdmsGt8dj6 |
| Threatray | 14'342 similar samples on MalwareBazaar |
| TLSH | T13635AE1AA1B76E5FF191C1B0C88D82701B6690C7BF6792869F048A7ADE873545CCF2D3 |
| File icon (PE): |  |
| dhash icon | 1b2561696965293f (5 x Formbook, 1 x AgentTesla, 1 x RedLineStealer) |
| Reporter | Anonymous |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
4
# of downloads :
175
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
Adding an access-denied ACE
Launching a process
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Launching cmd.exe command interpreter
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
expand.exe 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 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
Initial sample is a PE file and has a suspicious name
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
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:
formbook
Threat name:
ByteCode-MSIL.Spyware.Noon
Status:
Malicious
First seen:
2022-03-16 07:23:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
14 of 27 (51.85%)
Threat level:
2/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 14'332 additional samples on MalwareBazaar
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:goma loader rat suricata
Behaviour
Runs regedit.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
8e4143a9ffed1acc96cdc70176be108a068d489ca7a742c79872aea81d076945
MD5 hash:
fafd0bafbedee896cadc046e04f6e676
SHA1 hash:
ddb13bee7d0895f8e6a99887ceb2036703cddf6b
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: | 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.
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