MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f3d4ef73955b778a3e66516d7da922de0346ddccae35946106dcdbf90d1edd4. 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: 6


Intelligence 6 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4f3d4ef73955b778a3e66516d7da922de0346ddccae35946106dcdbf90d1edd4
SHA3-384 hash: 40e2d5b52594ce6989a9c42a1e0516d93b7e80845595e2b11516d017e2a2d7e467516ab2fcebb1313f46e13813e3108c
SHA1 hash: 246487e8115574aa61d5d9c3fb1b62e3f2f7b333
MD5 hash: 876e5b4ccf74658861d72bd9e0c1a52e
humanhash: item-mars-georgia-lemon
File name:876e5b4ccf74658861d72bd9e0c1a52e
Download: download sample
Signature Formbook
Create hunting rule
File size:760'320 bytes
First seen:2022-07-27 16:01:52 UTC
Last seen:2022-07-27 16:43:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:tTF3b+mkh0by3GVmy9zOV3JBEctPE2mvCO5qXmbqpTpkNz07AFqV:tJb+f+YGVm443JBEccCOaJ
TLSH T1BAF4D81D9EB5D04BC457AEF526A8DB3650142D7C6B06416231E8B6EEF7323E86CA313C
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon f0f0e8e8e8e892a8 (7 x Formbook, 3 x AveMariaRAT)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
314
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/294678/
Detection(s):
SecuriteInfo.com.AgentTesla-FDKB876E5B4CCF74.8955.2747.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.AgentTesla-FDKB876E5B4CCF74.12128.18110.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Sending an HTTP GET request
Creating a window
Running batch commands
Сreating synchronization primitives
DNS request
Downloading the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62e161d5a2f481deb96eb8e9/reports/0af75fcd-cbad-4105-ac71-889939edaa88/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/15fccf40-f396-4e5a-8578-3774b64f19fc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1041957
Signature
C2 URLs / IPs found in malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4f3d4ef73955b778a3e66516d7da922de0346ddccae35946106dcdbf90d1edd4/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-07-27 16:02:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
36
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j46u55zzkw3xri7gmulnpwusfxqdi3o4zlrvsrqqnxg37egr5xka._file
Verdict:
unknown
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/220727-tgryfsbae8/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Blocklisted process makes network request
Malware Config
Dropper Extraction:
https://textbin.net/raw/vebzreyxmq
Unpacked files
SH256 hash:
4f3d4ef73955b778a3e66516d7da922de0346ddccae35946106dcdbf90d1edd4
MD5 hash:
876e5b4ccf74658861d72bd9e0c1a52e
SHA1 hash:
246487e8115574aa61d5d9c3fb1b62e3f2f7b333
Link:
https://www.unpac.me/results/0a5be435-793b-4c8c-aa2e-931d6c862dca/
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Formbook

Executable exe 4f3d4ef73955b778a3e66516d7da922de0346ddccae35946106dcdbf90d1edd4

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2261886/
  
URLhaus
https://urlhaus.abuse.ch/url/2261884/
Cape
Cape
https://www.capesandbox.com/analysis/294678/

Comments


Avatar
zbet commented on 2022-07-27 16:01:57 UTC

url : hxxp://198.23.156.247/100/vbc.exe