MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5281533c78892f2b571668ef9c770ce9c04ee249397040db9b5975ed47601474. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments 1

SHA256 hash: 5281533c78892f2b571668ef9c770ce9c04ee249397040db9b5975ed47601474
SHA3-384 hash: 4bd3f7395221444ec5ead34234fe23e0fcc85f450fa3747eba1cd136435f7317f09915f325fc32f0d6660a98e965816c
SHA1 hash: 3b4da5ba14989a18614a91a844c67a6a8d8b6f84
MD5 hash: fe3d05f5903abce1faaf89b0afd3744e
humanhash: floor-six-winter-butter
File name:novi nalog je u prilogu.exe
Download: download sample
Signature Formbook
File size:850'944 bytes
First seen:2021-04-19 15:59:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 5460111dfb820e05d52b9be905fc0229 (2 x RemcosRAT, 1 x AveMariaRAT, 1 x NetWire)
ssdeep 12288:bQOsjN7IQRzxKvStQyXgSSxIg1vu/vh3XFFfor5KmNXB9isKRmp:ErjqQRVeSOywSSx91vi5XDf6AkK8
Threatray 4'724 similar samples on MalwareBazaar
TLSH 16056B21B250D4B3C03E19388D0B42F869A9BE30FD385C4676B5BD587EBE6503D6DA93
Reporter GovCERT_CH
Tags:FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
96
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Factura proforma, nuevo pedido.exe
Verdict:
Malicious activity
Analysis date:
2021-04-15 17:35:59 UTC
Tags:
installer trojan formbook stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
DNS request
Sending a custom TCP request
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Creates an undocumented autostart registry key
Detected FormBook malware
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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: Steal Google chrome login data
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 386910 Sample: Factura proforma, nuevo ped... Startdate: 14/04/2021 Architecture: WINDOWS Score: 100 49 www.ziruixu.com 2->49 57 Multi AV Scanner detection for domain / URL 2->57 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 5 other signatures 2->63 11 Factura proforma, nuevo pedido.exe 17 2->11         started        signatures3 process4 dnsIp5 55 cdn.discordapp.com 162.159.133.233, 443, 49710, 49712 CLOUDFLARENETUS United States 11->55 77 Writes to foreign memory regions 11->77 79 Allocates memory in foreign processes 11->79 81 Creates a thread in another existing process (thread injection) 11->81 83 Injects a PE file into a foreign processes 11->83 15 secinit.exe 11->15         started        signatures6 process7 signatures8 87 Modifies the context of a thread in another process (thread injection) 15->87 89 Maps a DLL or memory area into another process 15->89 91 Sample uses process hollowing technique 15->91 93 2 other signatures 15->93 18 explorer.exe 6 15->18 injected process9 dnsIp10 51 www.joomlas123.info 199.192.24.139, 49735, 80 NAMECHEAP-NETUS United States 18->51 53 www.wv0uoagz0yr.biz 18->53 39 C:\Users\user\AppData\Local\...\0v1xvuduf.exe, PE32 18->39 dropped 41 C:\Program Files (x86)\Xptbxn\0v1xvuduf.exe, PE32 18->41 dropped 65 System process connects to network (likely due to code injection or exploit) 18->65 67 Benign windows process drops PE files 18->67 23 rundll32.exe 1 18 18->23         started        27 0v1xvuduf.exe 18->27         started        file11 signatures12 process13 file14 43 C:\Users\user\AppData\...\8LOlogrv.ini, data 23->43 dropped 45 C:\Users\user\AppData\...\8LOlogri.ini, data 23->45 dropped 69 Detected FormBook malware 23->69 71 Creates an undocumented autostart registry key 23->71 73 Tries to steal Mail credentials (via file access) 23->73 75 4 other signatures 23->75 29 cmd.exe 2 23->29         started        33 cmd.exe 1 23->33         started        signatures15 process16 file17 47 C:\Users\user\AppData\Local\Temp\DB1, SQLite 29->47 dropped 85 Tries to harvest and steal browser information (history, passwords, etc) 29->85 35 conhost.exe 29->35         started        37 conhost.exe 33->37         started        signatures18 process19
Gathering data
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook persistence rat spyware stealer trojan
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Enumerates connected drives
Adds policy Run key to start application
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.joomlas123.info/3nop/
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:adonunix2
Author:Tim Brown @timb_machine
Description:AD on UNIX
Rule name:MALWARE_Win_DLAgent07
Author:ditekSHen
Description:Detects delf downloader agent

File information


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

Malspam

Formbook

Executable exe 5281533c78892f2b571668ef9c770ce9c04ee249397040db9b5975ed47601474

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments



Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-19 16:03:30 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0001.032] Anti-Behavioral Analysis::Timing/Delay Check GetTickCount
1) [B0009.029] Anti-Behavioral Analysis::Instruction Testing
2) [B0012.001] Anti-Static Analysis::Argument Obfuscation
3) [F0002.002] Collection::Polling
5) [C0026.002] Data Micro-objective::XOR::Encode Data
7) [C0047] File System Micro-objective::Delete File
8) [C0049] File System Micro-objective::Get File Attributes
9) [C0051] File System Micro-objective::Read File
10) [C0052] File System Micro-objective::Writes File
11) [E1510] Impact::Clipboard Modification
12) [C0007] Memory Micro-objective::Allocate Memory
13) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
14) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
15) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
16) [C0038] Process Micro-objective::Create Thread
17) [C0041] Process Micro-objective::Set Thread Local Storage Value
18) [C0018] Process Micro-objective::Terminate Process