MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 39da82f6a59b141c14da6d9af6677d0358521bc6aaab84c73b6f77df231962d8. 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

Intelligence 12 IOCs YARA 4 File information Comments 1

SHA256 hash:	39da82f6a59b141c14da6d9af6677d0358521bc6aaab84c73b6f77df231962d8
SHA3-384 hash:	9b71eb8767d6b90bad7d10a69c213116371e4ae26981f27fcbd65b2732bae24b04f63f5ccc3664a8edb78fb4a9058d3c
SHA1 hash:	fe77747a3d6895ca4e06d64572937a1aade738da
MD5 hash:	18b8722c854f1b0c9fd8a12b16f56f5b
humanhash:	october-summer-muppet-london
File name:	18b8722c854f1b0c9fd8a12b16f56f5b
Download:	download sample
Signature	Formbook Create hunting rule
File size:	30'720 bytes
First seen:	2022-06-09 11:41:26 UTC
Last seen:	2022-06-09 23:01:09 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	768:DMfibNTCNf7ojFYwQ7XvLWRgcL0ST8iNxy2Q:DQibhsm7oWRgcL9HNxvQ
TLSH	T132D2BF1BF3A4CA39E9760B312E6353014B7474A6CC27D72F7594A14B7E333A105D2AB5
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):
dhash icon	b28ccaacda53d39b (34 x Formbook, 1 x BitRAT, 1 x SnakeKeylogger)
Reporter	zbetcheckin
Tags:	32 exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

281

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

swift 0316354164.xlsx

Verdict:

Malicious activity

Analysis date:

2022-06-09 11:01:49 UTC

Tags:

encrypted opendir exploit CVE-2017-11882 loader

Link:

https://app.any.run/tasks/b561c2dd-da26-433e-9e74-a0eb8fe44277

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/278261/

Detection(s):

SecuriteInfo.com.Trojan.Siggen18.3563.18052.19353.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

Launching a process

Creating a process with a hidden window

Forced system process termination

Sending a custom TCP request

Running batch commands

Creating a file in the %AppData% subdirectories

Creating a file

Launching cmd.exe command interpreter

Searching for synchronization primitives

Setting browser functions hooks

Query of malicious DNS domain

Sending an HTTP GET request to an infection source

Enabling autorun by creating a file

Unauthorized injection to a system process

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

packed

Link:

https://www.filescan.io/uploads/62a1dccd5dc88d35716eda66/reports/571169d5-05fe-4895-a455-cf561371f107/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.

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/351e9ea9-29fd-45df-8f51-e534814bbf34

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1009955

Signature

.NET source code contains potential unpacker

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Creates an undocumented autostart registry key

Injects a PE file into a foreign processes

Machine Learning detection for dropped file

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 dropped file

Multi AV Scanner detection for submitted file

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Snort IDS alert for network traffic

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 Costura Assembly Loader

Yara detected FormBook

Yara detected Generic Downloader

Behaviour

Behavior Graph:

Download SVG

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/39da82f6a59b141c14da6d9af6677d0358521bc6aaab84c73b6f77df231962d8/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2022-06-09 11:25:35 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

19 of 26 (73.08%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=hhnif5vftmkbyfg2nwnpmz35anmfeg6gvkvyjrz3n5356iyzmlma._file

Verdict:

malicious

Label(s):

formbook

masslogger

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:yy48 rat spyware stealer suricata trojan

Link:

https://tria.ge/reports/220609-ntz7psffem/

Behaviour

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Program crash

Suspicious use of SetThreadContext

Checks computer location settings

Formbook Payload

Formbook

suricata: ET MALWARE FormBook CnC Checkin (GET)

Unpacked files

SH256 hash:

39da82f6a59b141c14da6d9af6677d0358521bc6aaab84c73b6f77df231962d8

MD5 hash:

18b8722c854f1b0c9fd8a12b16f56f5b

SHA1 hash:

fe77747a3d6895ca4e06d64572937a1aade738da

Link:

https://www.unpac.me/results/463273e0-99c0-4bc9-a568-210f8f21c597/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/39da82f6a59b/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Suspicious File

Score:

0.38

Link:

https://yomi.yoroi.company/submissions/39da82f6a59b141c14da6d9af6677d0358521bc6aaab84c73b6f77df231962d8

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 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Formbook in memory
Reference:	internal research

Rule name:	pe_imphash Create hunting rule

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

Rule name:	win_formbook_auto Create hunting rule
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

Formbook

exe 39da82f6a59b141c14da6d9af6677d0358521bc6aaab84c73b6f77df231962d8

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2231505/

Cape

https://www.capesandbox.com/analysis/278261/

Comments

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zbet commented on 2022-06-09 11:41:30 UTC

url : hxxp://104.168.33.25/90/fm.exe