MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c6023386c27ffd69c929fe5bdcf8622d4a7d800c60022be9c4f333966c0eb167. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c6023386c27ffd69c929fe5bdcf8622d4a7d800c60022be9c4f333966c0eb167
SHA3-384 hash: 3a52304169f2d35cceaa590304cb8967f5362f8cc6a47ebdf91ccdcf7f8a35a06379f9961068a557570e26cdc878f5df
SHA1 hash: 1930fac2bd1d242b9da97d7f15bb65d91a1555b8
MD5 hash: de392a95dbf4d0b1ac40fa6cd07afeb9
humanhash: hamper-cup-bulldog-chicken
File name:0129876789INVM.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:691'200 bytes
First seen:2022-07-05 05:39:54 UTC
Last seen:2022-07-05 06:36:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:VbLFTG/TuKSRiF6qSwmxBInsuU9z8irmIKCi1a4AAXXlX3R6FBZe/Cplu3BycXYB:BRCXAw8BWKKiRdqajplu0vItYPH/F
TLSH T179E40252E3E94E7DF6602F34F1B7DC042871A8485B32C21846C854FF3AEA64F5D92697
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)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
250
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Variant.MSILHeracles.34198.4811.6663.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Adding an access-denied ACE
Launching a process
Сreating synchronization primitives
Sending a custom TCP request
Searching for synchronization primitives
Creating a file
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Reading critical registry keys
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62c3ceb5a9394d6421484d81/reports/888c70aa-d5de-4759-865c-642c655d23ba/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:
Malicious
Link:
https://analyze.intezer.com/analyses/489d2843-7a50-4cd8-b0af-a8211f9b012e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1024572
Signature
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 657064 Sample: 0129876789INVM.exe Startdate: 05/07/2022 Architecture: WINDOWS Score: 100 33 www.marlton8.com 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus detection for URL or domain 2->37 39 Multi AV Scanner detection for submitted file 2->39 41 8 other signatures 2->41 10 0129876789INVM.exe 3 2->10         started        signatures3 process4 file5 31 C:\Users\user\...\0129876789INVM.exe.log, ASCII 10->31 dropped 13 cleanmgr.exe 10->13         started        16 HOSTNAME.EXE 10->16         started        18 GamePanel.exe 10->18         started        20 fontview.exe 10->20         started        process6 signatures7 47 Modifies the context of a thread in another process (thread injection) 13->47 49 Maps a DLL or memory area into another process 13->49 51 Sample uses process hollowing technique 13->51 53 2 other signatures 13->53 22 msiexec.exe 13->22         started        25 explorer.exe 13->25 injected process8 signatures9 43 Modifies the context of a thread in another process (thread injection) 22->43 45 Maps a DLL or memory area into another process 22->45 27 cmd.exe 1 22->27         started        process10 process11 29 conhost.exe 27->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c6023386c27ffd69c929fe5bdcf8622d4a7d800c60022be9c4f333966c0eb167/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-07-05 02:04:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yybdhbwcp76wtsjj7zn5z6dcfvfh3aammabcx2oe6mzzm3aowftq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:zzun loader persistence rat spyware stealer suricata
Link:
https://tria.ge/reports/220705-gcw1dsedej/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Adds policy Run key to start application
Executes dropped EXE
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
faab8e34bd74655ac1e11a51e9fc78462635c2ffe01ee752f3fd75bb8964850d
MD5 hash:
5de5f30b6b98c11d0531ba7ba070965d
SHA1 hash:
54a76497354cc3d3e941ca7910a7de50006f7b05
Link:
https://www.unpac.me/results/dfb08c1e-be90-4342-a4fb-fed71cd9dc3c/
SH256 hash:
c6023386c27ffd69c929fe5bdcf8622d4a7d800c60022be9c4f333966c0eb167
MD5 hash:
de392a95dbf4d0b1ac40fa6cd07afeb9
SHA1 hash:
1930fac2bd1d242b9da97d7f15bb65d91a1555b8
Link:
https://www.unpac.me/results/dfb08c1e-be90-4342-a4fb-fed71cd9dc3c/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c6023386c27f/report/overview.html
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
Create hunting rule
Author:Tim Brown @timb_machine
Description:AD on UNIX
Rule name:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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: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.

Malspam

Formbook

Executable exe c6023386c27ffd69c929fe5bdcf8622d4a7d800c60022be9c4f333966c0eb167

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
URLhaus
https://urlhaus.abuse.ch/url/2248548/

Comments