MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f285ae8e4b4fc0bc50cb639a413412a276f7d187770da6fb5e089eeeff9145e. 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: 16


Intelligence 16 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4f285ae8e4b4fc0bc50cb639a413412a276f7d187770da6fb5e089eeeff9145e
SHA3-384 hash: 4a3062474e52cec519286a08891741f6b890491fbb1f812d79617d9e4f6b16aa556fb5ad5da9d775ade4aa86a7d690d8
SHA1 hash: bd563d8410acf695dc004f4e931e829b0ee1b629
MD5 hash: a663aeeb5c676da287002255a7473985
humanhash: king-nevada-november-jupiter
File name:file
Download: download sample
Signature Formbook
Create hunting rule
File size:1'156'914 bytes
First seen:2022-11-11 22:40:44 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 24576:1AOcZusALZP4ZKsOTnvUo041WWmw7rC2uy7Qw8tFe5CY:/lUK/z04Nms0yHsMkY
TLSH T1C2351242B794C572D87306318D36AE667F3E3D308E54995FF3D0BE2DAA712809225B63
TrID 91.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
3.6% (.EXE) Win64 Executable (generic) (10523/12/4)
1.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.5% (.EXE) Win32 Executable (generic) (4505/5/1)
0.6% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon e0cc808e8edcd871 (2 x Formbook, 1 x SnakeKeylogger)
Reporter jstrosch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
171
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PURCHASEORDER-BREDBAND group-TRADING-.doc
Verdict:
Malicious activity
Analysis date:
2022-11-11 18:37:53 UTC
Tags:
opendir exploit cve-2017-11882 loader formbook trojan stealer
Link:
https://app.any.run/tasks/f3ffee67-1c75-4335-80d8-7194494599f7

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/332690/
Detection(s):
Win.Dropper.Nanocore-9975169-0
Create hunting rule

SecuriteInfo.com.Gen.Variant.Johnnie.221809.751.14920.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file in the %temp% subdirectories
Enabling the 'hidden' option for files in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/51505/overview
Behaviour
MalwareBazaar
MeasuringTime
EvasionQueryPerformanceCounter
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware overlay packed setupapi.dll shdocvw.dll shell32.dll
Link:
https://www.filescan.io/uploads/636ecf866e54ea725828433d/reports/57e21c94-abb8-458b-96c5-711a1dca5854/overview
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/dfe7ec80-e45d-4ffc-93fe-129967dc60eb
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1111584
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
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 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 AntiVM autoit script
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 744280 Sample: file.exe Startdate: 11/11/2022 Architecture: WINDOWS Score: 100 63 Malicious sample detected (through community Yara rule) 2->63 65 Antivirus detection for URL or domain 2->65 67 Multi AV Scanner detection for submitted file 2->67 69 4 other signatures 2->69 12 file.exe 3 28 2->12         started        process3 file4 57 C:\Users\user\AppData\Local\...\epijfqvl.exe, PE32 12->57 dropped 15 wscript.exe 1 12->15         started        process5 dnsIp6 59 192.168.2.1 unknown unknown 15->59 18 epijfqvl.exe 1 3 15->18         started        process7 file8 55 C:\Users\user\AppData\Local\...\RegSvcs.exe, PE32 18->55 dropped 71 Multi AV Scanner detection for dropped file 18->71 73 Contains functionality to inject code into remote processes 18->73 75 Writes to foreign memory regions 18->75 77 3 other signatures 18->77 22 RegSvcs.exe 18->22         started        25 RegSvcs.exe 18->25         started        signatures9 process10 signatures11 85 Modifies the context of a thread in another process (thread injection) 22->85 87 Maps a DLL or memory area into another process 22->87 89 Sample uses process hollowing technique 22->89 91 Queues an APC in another process (thread injection) 22->91 27 explorer.exe 22->27 injected 93 Tries to detect virtualization through RDTSC time measurements 25->93 process12 signatures13 95 Uses ipconfig to lookup or modify the Windows network settings 27->95 30 epijfqvl.exe 27->30         started        33 ipconfig.exe 27->33         started        35 epijfqvl.exe 1 27->35         started        process14 signatures15 97 Sample uses process hollowing technique 30->97 37 RegSvcs.exe 30->37         started        40 RegSvcs.exe 30->40         started        99 Modifies the context of a thread in another process (thread injection) 33->99 101 Maps a DLL or memory area into another process 33->101 103 Tries to detect virtualization through RDTSC time measurements 33->103 42 cmd.exe 1 33->42         started        105 Writes to foreign memory regions 35->105 44 RegSvcs.exe 35->44         started        46 RegSvcs.exe 35->46         started        process16 signatures17 79 Modifies the context of a thread in another process (thread injection) 37->79 81 Maps a DLL or memory area into another process 37->81 83 Sample uses process hollowing technique 37->83 48 cmmon32.exe 37->48         started        51 conhost.exe 42->51         started        53 WerFault.exe 44->53         started        process18 signatures19 61 Tries to detect virtualization through RDTSC time measurements 48->61
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4f285ae8e4b4fc0bc50cb639a413412a276f7d187770da6fb5e089eeeff9145e/
Threat name:
Win32.Trojan.Tnega
Create hunting rule
Status:
Malicious
First seen:
2022-11-11 16:43:51 UTC
File Type:
PE (Exe)
Extracted files:
33
AV detection:
20 of 25 (80.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j4ufv2hewt6axrimwy42ie2bfitw67iyo5ynu35v4ce6537zcrpa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
cobaltstrike
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:wh23 persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/221111-2l4rtacb53/
Behaviour
Modifies registry class
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/3eb7779c-7c70-4038-8a0d-c7d524a05d92
Unpacked files
SH256 hash:
f383245e5356160a0da84fc48d78bb6b982f79ae6ac9499d0d384172fe069fff
MD5 hash:
224456891bd4d3cd26fccb8f789a5fa5
SHA1 hash:
bfda6ad1b6d1744a4a4918141b71332a745b5b8f
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/9857e2e5-d2a4-4e6a-9906-a6e98e5984ff/
Parent samples :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 hash:
5a63968b9201b6771d245b6a4b14755cbb6aac2ce7978e051c677be67bc5b162
MD5 hash:
0fda4e32d2a03d3a287cc8c88fcca5c6
SHA1 hash:
b06cd4769a4b50fe5009fe41d10a236ddf68781f
Link:
https://www.unpac.me/results/9857e2e5-d2a4-4e6a-9906-a6e98e5984ff/
SH256 hash:
4f285ae8e4b4fc0bc50cb639a413412a276f7d187770da6fb5e089eeeff9145e
MD5 hash:
a663aeeb5c676da287002255a7473985
SHA1 hash:
bd563d8410acf695dc004f4e931e829b0ee1b629
Link:
https://www.unpac.me/results/9857e2e5-d2a4-4e6a-9906-a6e98e5984ff/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4f285ae8e4b4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4f285ae8e4b4fc0bc50cb639a413412a276f7d187770da6fb5e089eeeff9145e

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:sfx_pdb
Create hunting rule
Author:@razvialex
Description:Detect interesting files containing sfx with pdb paths.
Rule name:sfx_pdb_winrar_restrict
Create hunting rule
Author:@razvialex
Description:Detect interesting files containing sfx with pdb paths.
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
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

Executable exe 4f285ae8e4b4fc0bc50cb639a413412a276f7d187770da6fb5e089eeeff9145e

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/332690/
  
URLhaus
https://urlhaus.abuse.ch/url/2408629/

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