MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a51f4703edfdf96e7d4ed7efc9591119973c192d81131c73c24b39f9f6f7b60b. 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: 12
| SHA256 hash: | a51f4703edfdf96e7d4ed7efc9591119973c192d81131c73c24b39f9f6f7b60b |
|---|---|
| SHA3-384 hash: | b7ea82a617266597d8ab96f82b57269dd4d21cc213f70991dbc318c7fae4fbebb6310c82f7e60d9cc1e405a08168b63f |
| SHA1 hash: | 88dc4bd0610a00362171cfad2d56401c5f8b6f3e |
| MD5 hash: | a207535e4c28c541c65d0af95a8e65eb |
| humanhash: | lima-moon-illinois-william |
| File name: | 4x6bmEZTBmx12me.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 581'120 bytes |
| First seen: | 2021-09-23 04:45:09 UTC |
| Last seen: | 2021-09-23 14:12:14 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'659 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 12288:zJ91mtiK5oywpri9W3ZOmDSghjD8WWx/6krB5XugJyb:zR+FoyoiM3ZOYjD8WHgF5yb |
| Threatray | 9'516 similar samples on MalwareBazaar |
| TLSH | T187C4122E8A9C563FDD5A5EFD50301452A7B2D22DE242F7C6EC96A1B0295E7DA1C030CF |
| Reporter |  GovCERT_CH |
| Tags: | exe FormBook xloader |
Intelligence
File Origin
# of uploads :
2
# of downloads :
235
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4x6bmEZTBmx12me.exe
Verdict:
Malicious activity
Analysis date:
2021-09-23 04:50:49 UTC
Tags:
trojan formbook stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
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
Behaviour
Behavior Graph:
Detection:
xloader
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-09-23 03:13:46 UTC
AV detection:
14 of 45 (31.11%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 9'506 additional samples on MalwareBazaar
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:jdt0 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)
Malware Config
C2 Extraction:
http://www.jen4x.com/jdt0/
Unpacked files
SH256 hash:
752d86779f0a6e6a1ab9ce1b34a113bd51253f49245eb1553fabe75fdcef86a0
MD5 hash:
0b1d2881da374de2f3751c4f85f6fdc9
SHA1 hash:
65c1b8747dbba9dd5ddbf4db72ef0eecd05413a7
Detections:
win_formbook_g0
win_formbook_auto
Parent samples :
4eb131114c2b67395cff2f126c699a569e6ba5e3a53876f79588dfa0924b3d7e
a51f4703edfdf96e7d4ed7efc9591119973c192d81131c73c24b39f9f6f7b60b
984dec79b881adf59d5308f52fddeda0fbccbd917b750f6ec9a5be1a1a4dc0fa
5e27b2f6ec7f0387f6c380ac26eb924fcc732601c43ed7c400c42ae82fb0de57
d2c3619f62ee7f09594134678d02e47d6a0b71a5e203f3edae6a9f5dbecb4f48
7b858664b4283d8d0be155dc6bbe9f279e066b6cf2dd985eef95698e77333900
a51f4703edfdf96e7d4ed7efc9591119973c192d81131c73c24b39f9f6f7b60b
984dec79b881adf59d5308f52fddeda0fbccbd917b750f6ec9a5be1a1a4dc0fa
5e27b2f6ec7f0387f6c380ac26eb924fcc732601c43ed7c400c42ae82fb0de57
d2c3619f62ee7f09594134678d02e47d6a0b71a5e203f3edae6a9f5dbecb4f48
7b858664b4283d8d0be155dc6bbe9f279e066b6cf2dd985eef95698e77333900
SH256 hash:
19de09b605c8086eee2df7eed5c13b21a75e5c79c886ec5150ba61a2b9f855cf
MD5 hash:
b746d88cbf6dc48727be696736a9847d
SHA1 hash:
e6aab1d0ca6a8b581f234751fa8d6cfa9443626f
SH256 hash:
cac8b347040a359c02ae5e658d3d76230c7dd7eb33505605ed0b9bc49ff268c7
MD5 hash:
71a894ff252c767b80d65ab1e54fda2b
SHA1 hash:
bcc4ff628585ca28b8b0f2c30e63049b910d4d49
SH256 hash:
61049d596d089a3da25c49f6b7935abd84cdc21b076a750d6545460962aa5120
MD5 hash:
0f0bc05226dfa478c682ca360f77dbd6
SHA1 hash:
16dd82b2aed4eb7455e1bf5e7b582f4f80186195
SH256 hash:
a51f4703edfdf96e7d4ed7efc9591119973c192d81131c73c24b39f9f6f7b60b
MD5 hash:
a207535e4c28c541c65d0af95a8e65eb
SHA1 hash:
88dc4bd0610a00362171cfad2d56401c5f8b6f3e
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
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: | pe_imphash |
|---|
| 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.
Malspam
Dropped by
xloader
Delivery method
Distributed via e-mail attachment
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