MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 79655e0deb2223be705fe64c7abde57e3d815e70a28ad51cae43703641e4c543. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments

SHA256 hash: 79655e0deb2223be705fe64c7abde57e3d815e70a28ad51cae43703641e4c543
SHA3-384 hash: 82631f7ad2a13705326d8670206204fd9acae84d37ed117eaeafb573691c41c43be9d92a7f79b7e66deb5c0697d4fa53
SHA1 hash: c3cfcc93528063a54dc0a1efdf76ecb3d6e8e8dc
MD5 hash: c73964ca2586c536052df6cd230f4320
humanhash: bulldog-tango-kitten-mexico
File name:listaXdeXmuestrasXdeXproductosXpdf.exe
Download: download sample
Signature Formbook
File size:837'120 bytes
First seen:2022-02-17 09:44:44 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3bbae5474fae9ab3c9cd00f1e2cffe97 (5 x Formbook, 1 x RemcosRAT, 1 x DBatLoader)
ssdeep 24576:KW6My6w7W6VCvGC/nRiTFYvv8W01Kby/:Khc57RMQb
Threatray 11'864 similar samples on MalwareBazaar
TLSH T1DF058DA2B3949837C11B15748C1BC7B5682A7E113D989C877AE72F4E6F3D78138361A3
File icon (PE):PE icon
dhash icon f468cec4d4d4d4c4 (6 x Formbook, 1 x RemcosRAT, 1 x DBatLoader)
Reporter lowmal3
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
237
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a window
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe greyware keylogger 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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Creates a thread in another existing process (thread injection)
Drops PE files to the user root directory
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 573965 Sample: listaXdeXmuestrasXdeXproduc... Startdate: 17/02/2022 Architecture: WINDOWS Score: 100 69 Malicious sample detected (through community Yara rule) 2->69 71 Multi AV Scanner detection for submitted file 2->71 73 Yara detected FormBook 2->73 10 listaXdeXmuestrasXdeXproductosXpdf.exe 1 17 2->10         started        process3 dnsIp4 63 onedrive.live.com 10->63 65 dm-files.fe.1drv.com 10->65 67 b2jg0a.dm.files.1drv.com 10->67 45 C:\Users\user\Alfbfnfp.exe, PE32 10->45 dropped 47 C:\Users\user\Alfbfnfp.exe:Zone.Identifier, ASCII 10->47 dropped 93 Drops PE files to the user root directory 10->93 95 Writes to foreign memory regions 10->95 97 Allocates memory in foreign processes 10->97 99 2 other signatures 10->99 15 logagent.exe 10->15         started        file5 signatures6 process7 signatures8 103 Modifies the context of a thread in another process (thread injection) 15->103 105 Maps a DLL or memory area into another process 15->105 107 Sample uses process hollowing technique 15->107 109 2 other signatures 15->109 18 explorer.exe 4 2 15->18 injected process9 signatures10 75 Uses ipconfig to lookup or modify the Windows network settings 18->75 21 Alfbfnfp.exe 15 18->21         started        25 Alfbfnfp.exe 15 18->25         started        27 ipconfig.exe 18->27         started        process11 dnsIp12 51 onedrive.live.com 21->51 53 dm-files.fe.1drv.com 21->53 55 b2jg0a.dm.files.1drv.com 21->55 77 Writes to foreign memory regions 21->77 79 Allocates memory in foreign processes 21->79 81 Creates a thread in another existing process (thread injection) 21->81 29 DpiScaling.exe 21->29         started        57 onedrive.live.com 25->57 59 dm-files.fe.1drv.com 25->59 61 b2jg0a.dm.files.1drv.com 25->61 83 Multi AV Scanner detection for dropped file 25->83 85 Injects a PE file into a foreign processes 25->85 32 logagent.exe 25->32         started        87 Modifies the context of a thread in another process (thread injection) 27->87 89 Maps a DLL or memory area into another process 27->89 91 Tries to detect virtualization through RDTSC time measurements 27->91 34 cmd.exe 1 27->34         started        36 explorer.exe 27->36         started        39 explorer.exe 149 27->39         started        41 explorer.exe 27->41         started        signatures13 process14 dnsIp15 101 Tries to detect virtualization through RDTSC time measurements 29->101 43 conhost.exe 34->43         started        49 192.168.2.1 unknown unknown 36->49 signatures16 process17
Threat name:
Win32.Spyware.Noon
Status:
Malicious
First seen:
2022-02-17 09:45:17 UTC
File Type:
PE (Exe)
Extracted files:
125
AV detection:
21 of 28 (75.00%)
Threat level:
  2/5
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader campaign:pvxz loader persistence rat suricata
Behaviour
Suspicious use of WriteProcessMemory
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Blocklisted process makes network request
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
bc5eab9035807d258b611c670dbc460e72b99b22c65bc13dde5e3a2c4c8c9613
MD5 hash:
721f31a2cfa45743fbbe5d65d907a254
SHA1 hash:
dc17bf82ddd688e93af709465a171cc275dc6ba1
Detections:
win_dbatloader_w0
SH256 hash:
79655e0deb2223be705fe64c7abde57e3d815e70a28ad51cae43703641e4c543
MD5 hash:
c73964ca2586c536052df6cd230f4320
SHA1 hash:
c3cfcc93528063a54dc0a1efdf76ecb3d6e8e8dc
Malware family:
XLoader
Verdict:
Malicious
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:malware_Formbook_strings
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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.

Malspam

Formbook

Executable exe 79655e0deb2223be705fe64c7abde57e3d815e70a28ad51cae43703641e4c543

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments