MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4fec09c02c8f80d1d158bfd9bc6e4adc5aa9891726901db4572843c405e2519d. 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: 15


Intelligence 15 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4fec09c02c8f80d1d158bfd9bc6e4adc5aa9891726901db4572843c405e2519d
SHA3-384 hash: af76c2ca393431b63bc845bbf0991cdad22e1b8ca4b1cd06ec22aa4ba3b4b8b680d37a76dc132f54ccdcc600a6f0014e
SHA1 hash: e13e6f03918cd4c2fa35cbe2dafcc7e352ce5b76
MD5 hash: 2421d5bcf078bf77abf3759bb80695ca
humanhash: neptune-papa-king-stairway
File name:kkkke.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:255'830 bytes
First seen:2023-03-22 06:20:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 431 x GuLoader)
ssdeep 6144:/Ya6+VEijktZwms1W2iGcBm4AP0ur+EDAKMKebKAy7tdmLXjeq:/YoVJkLw16APx+EDAl/bKAktWqq
Threatray 2'386 similar samples on MalwareBazaar
TLSH T1E6441229B3B0C077DE6357324D3F7516AAFD980224AE471F27A09BAE7721151DA0F362
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
234
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
kkkke.exe
Verdict:
Malicious activity
Analysis date:
2023-03-22 06:24:09 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/b36f8bad-0976-48c5-a687-a93d7d762309

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/376344/
Detection(s):
Sanesecurity.Malware.28885.BadCo.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Searching for the window
Searching for synchronization primitives
Launching a process
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
comodo nemesis overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/641a9e50f1c76a74c77f2586/reports/d73b67a2-ea9b-420e-9d07-23552b0e5186/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4fec09c02c8f80d1d158bfd9bc6e4adc5aa9891726901db4572843c405e2519d
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f6ce0caf-dc98-4660-bd4f-8a9ad0c0e95d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1199051
Signature
Antivirus detection for URL or domain
Detected unpacking (changes PE section rights)
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 dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 831956 Sample: kkkke.exe Startdate: 22/03/2023 Architecture: WINDOWS Score: 100 35 Snort IDS alert for network traffic 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Antivirus detection for URL or domain 2->39 41 3 other signatures 2->41 9 kkkke.exe 19 2->9         started        process3 file4 27 C:\Users\user\AppData\Local\Temp\hobqiy.exe, PE32 9->27 dropped 12 hobqiy.exe 1 9->12         started        process5 signatures6 55 Multi AV Scanner detection for dropped file 12->55 57 Detected unpacking (changes PE section rights) 12->57 59 Machine Learning detection for dropped file 12->59 61 Maps a DLL or memory area into another process 12->61 15 hobqiy.exe 12->15         started        18 conhost.exe 12->18         started        process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 20 explorer.exe 2 6 15->20 injected process9 dnsIp10 29 ecofinds.net 108.178.44.46, 49708, 49709, 49710 SINGLEHOP-LLCUS United States 20->29 31 www.42230.org.wcdnga.com 163.171.128.148, 49720, 49721, 49722 QUANTILNETWORKSUS European Union 20->31 33 11 other IPs or domains 20->33 43 System process connects to network (likely due to code injection or exploit) 20->43 45 Performs DNS queries to domains with low reputation 20->45 24 explorer.exe 13 20->24         started        signatures11 process12 signatures13 47 Tries to steal Mail credentials (via file / registry access) 24->47 49 Tries to harvest and steal browser information (history, passwords, etc) 24->49 51 Modifies the context of a thread in another process (thread injection) 24->51 53 Maps a DLL or memory area into another process 24->53
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4fec09c02c8f80d1d158bfd9bc6e4adc5aa9891726901db4572843c405e2519d/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-03-22 06:20:57 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
18 of 37 (48.65%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j7watqbmr6andukyx7m3y3sk3rnktcixe2ib3ncxfbb4ibpckgoq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
07d979878c4aabc0af1120eccb19293cdd19658b840268e4145e56f5c4e13053
Formbook
1a82b5f2c6d3897569544939dfae30457d05924c8811f009d0cd1540319ea90c
Formbook
6769905302dd965b16c74da2c0a5633dd4cbfe5c8879a5db6a7322d53d668533
Formbook
7421357a93e7c44d80dd1fca3c0359e23b98c590722ef09ee940766fb5252fdf
Formbook
8aa4a5feee91f2caa993c9624153ee2ecbe97098fc7470a5103c408376b2a12a
Formbook
929bb5ebaacd2750b9f7cbabb07e7fdf678d2958b8552af4e7fb705bbb92c21e
Formbook
94dab2dcd48fb66d3a0836a2711083a5ee738603de0b47fecfed4e23711def16
Formbook
bf71631457bec8633d10c816bfa914ef51bee4acda9a37c2613697976a21decb
Formbook
cc2ffcb49e5ff1b4f1be2c0c8f5bef3cf51caeef5fcd8be8a6367174b7dd8063
Formbook
ddaf734203775ba854a597b395d5bbea5140b877727aac7c4f0120ec8de793b2
Formbook
+ 2'376 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/230322-g4bhrshb6y/
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 WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Unpacked files
SH256 hash:
64d528f23110f47090f114e3851952cc7cec2a9ab84791459c961bd3b376080f
MD5 hash:
a28b1d2176159722a22934f2dd2db64d
SHA1 hash:
63d2e89bb95d97dbe15157a2cc9e147c2fed2021
Detections:
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/6eacc6ac-5158-42d4-b572-cdb2876df74c/
SH256 hash:
760b26bbf82a332513ba2c71c5f7f3ebf35b8ed7d4c16b0752092f97b8c3dd34
MD5 hash:
0f88cd5f343108dbd20cbbfd2b6d04f6
SHA1 hash:
a1dfec6d2dad2242eed91c7877b8550b2becfd64
Link:
https://www.unpac.me/results/6eacc6ac-5158-42d4-b572-cdb2876df74c/
SH256 hash:
59684da51b9d6a326795b213e61547a7f486c60e3d27e469d5af72a340a2442f
MD5 hash:
1ed5fc40d0bedcecaabcd0f7b47a3d83
SHA1 hash:
6cd1d003f6910f400fe368ebab9a06e23f0ae6a5
Link:
https://www.unpac.me/results/6eacc6ac-5158-42d4-b572-cdb2876df74c/
SH256 hash:
4fec09c02c8f80d1d158bfd9bc6e4adc5aa9891726901db4572843c405e2519d
MD5 hash:
2421d5bcf078bf77abf3759bb80695ca
SHA1 hash:
e13e6f03918cd4c2fa35cbe2dafcc7e352ce5b76
Link:
https://www.unpac.me/results/6eacc6ac-5158-42d4-b572-cdb2876df74c/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4fec09c02c8f/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/4fec09c02c8f80d1d158bfd9bc6e4adc5aa9891726901db4572843c405e2519d

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
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.
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

zip c0e30a346b311fc900cf4092286d1aebd5c4f028f632405a10bf6bedfa8a100d

Formbook

Executable exe 4fec09c02c8f80d1d158bfd9bc6e4adc5aa9891726901db4572843c405e2519d

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 c0e30a346b311fc900cf4092286d1aebd5c4f028f632405a10bf6bedfa8a100d
Cape
Cape
https://www.capesandbox.com/analysis/376344/
  
Dropped by
MD5 a31bc094279bd65f568076d2aece6c99

Comments