MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c788d595c8952558670f3420d11677f9455803c953e6614546013efdc4967725. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c788d595c8952558670f3420d11677f9455803c953e6614546013efdc4967725
SHA3-384 hash: d27a9491e9e96aa5f1c0a07be232a92cf26c817ad909d4be954ee6297244820ffc2263e14503564491c3530b01a74564
SHA1 hash: 8998e1ee5eae718fa3538a2479b9cd3b5cd6e77d
MD5 hash: 800039ae7f11d89f082bf841d3fe51f6
humanhash: dakota-double-fish-mars
File name:Confirmaci¢n de cuenta bancaria.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:880'128 bytes
First seen:2021-08-23 15:39:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'454 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:7bPsqxozAxraMsSNPi0OY8cEr4Zlvm8u9U65HwPGMaIGH8y9:kzAx4SZi0OmEr4TvZu9U65Qvg
Threatray 7'172 similar samples on MalwareBazaar
TLSH T1FB15F53D19BA1637D1B5C355EBE18423F149985FB814AE6A6CCE07A7030BA9734C723E
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
317
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Confirmaci¢n de cuenta bancaria.exe
Verdict:
Malicious activity
Analysis date:
2021-08-23 15:42:20 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/606b9141-9829-4494-803b-38739ad328ad

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

Behaviour
Sending a UDP request
Creating a window
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Creating a file
Launching cmd.exe command interpreter
Creating a process from a recently created file
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Verdict:
UNKNOWN
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/0818221a-b3f5-4120-a557-cec233f6eef0
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/837665
Signature
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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)
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
Sigma detected: Suspicious Process Start Without DLL
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 470095 Sample: Confirmaci#U00a2n de cuenta... Startdate: 23/08/2021 Architecture: WINDOWS Score: 100 43 www.lovecord.date 2->43 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 Antivirus detection for URL or domain 2->55 57 12 other signatures 2->57 11 Confirmaci#U00a2n de cuenta bancaria.exe 7 2->11         started        signatures3 process4 file5 35 C:\Users\user\AppData\...\KyhblXdSIkQJl.exe, PE32 11->35 dropped 37 C:\...\KyhblXdSIkQJl.exe:Zone.Identifier, ASCII 11->37 dropped 39 C:\Users\user\AppData\Local\...\tmpD064.tmp, XML 11->39 dropped 41 Confirmaci#U00a2n ...ta bancaria.exe.log, ASCII 11->41 dropped 61 Writes to foreign memory regions 11->61 63 Injects a PE file into a foreign processes 11->63 15 RegSvcs.exe 11->15         started        18 RegSvcs.exe 11->18         started        20 schtasks.exe 1 11->20         started        signatures6 process7 signatures8 71 Modifies the context of a thread in another process (thread injection) 15->71 73 Maps a DLL or memory area into another process 15->73 75 Sample uses process hollowing technique 15->75 77 Queues an APC in another process (thread injection) 15->77 22 explorer.exe 15->22 injected 79 Tries to detect virtualization through RDTSC time measurements 18->79 26 conhost.exe 20->26         started        process9 dnsIp10 45 shops.myshopify.com 23.227.38.74, 49737, 80 CLOUDFLARENETUS Canada 22->45 47 www.ishopgrady.com 22->47 49 ishopgrady.myshopify.com 22->49 59 System process connects to network (likely due to code injection or exploit) 22->59 28 WWAHost.exe 22->28         started        signatures11 process12 signatures13 65 Modifies the context of a thread in another process (thread injection) 28->65 67 Maps a DLL or memory area into another process 28->67 69 Tries to detect virtualization through RDTSC time measurements 28->69 31 cmd.exe 1 28->31         started        process14 process15 33 conhost.exe 31->33         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c788d595c8952558670f3420d11677f9455803c953e6614546013efdc4967725/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-23 14:52:15 UTC
AV detection:
20 of 46 (43.48%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=y6enlfoisusvqzypgqqncftx7fcvqa6jkptgcrkgae7p3rewo4sq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
4307780f4d8e29477a0c018fe3a769fbc545bb54e14129319592271601599147
Formbook
5fe669ecbc820aa52d3fb572b96b7c1cadad169da50cf1a67d4268cd917b041e
Formbook
6f0a6315305a918cfaa7ec77275bd65a0acddbbac8b631ffe4dfb846a057a607
Formbook
8674688f673421c41dd39734f690c3b1b0aa8aceb5adeb057cf8b21d8f2e41a6
Formbook
930ca41592c497666685d31cebd2afc885706bdad347e102a039015802d05bef
Formbook
936b53b469b70aa0ed5749f7dfa9c279691c041634fa10ceb442b25512cba4b8
Formbook
b1ea67aa792591a3a7fe1e0666c1d156e33a225742e9af401d92cbc46e24ec3f
Formbook
df6ade5c4e7c4f0e82aca32d744b6f8762d2dd82a98b7bda97e42748d488a661
Formbook
f79e63a900f1686efb6938afab99d2df64b390be52d8af9dc8da2aff14844981
Formbook
+ 7'162 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:vd9n rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/210823-kyf598tyas/
Behaviour
Creates scheduled task(s)
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.constructioncleanup.pro/vd9n/
Unpacked files
SH256 hash:
9a8075c5d78a69661c1ed07d1dc6a8f76acc5edd1d900dec908fd95f3e00cdc4
MD5 hash:
7fc4eef3c07b4890608859686bb43c97
SHA1 hash:
05f2d020d59a10ace5506ec8f6a1a5377b3ab155
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/a0f0f835-786f-4c56-92b9-991290d388f1/
Parent samples :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 hash:
6912e4bedd1288f116e968f0a79d9797f6d6bd24d45a5f10c52e20f9d33b8c61
MD5 hash:
03bde4a82ad64c0f314985232fbca3fa
SHA1 hash:
e8d0b6339e94192eaaca32c812f914e60576dca6
Link:
https://www.unpac.me/results/a0f0f835-786f-4c56-92b9-991290d388f1/
SH256 hash:
a9beedc423c79c8bc6c3571ba2e49d8179a6f322033a1ded0cab29d4f53bc758
MD5 hash:
0934ef1b71314a17928abf8091cddce5
SHA1 hash:
c62d34f20a7d559dc4f22f7201ae96d9285706b6
Link:
https://www.unpac.me/results/a0f0f835-786f-4c56-92b9-991290d388f1/
SH256 hash:
c788d595c8952558670f3420d11677f9455803c953e6614546013efdc4967725
MD5 hash:
800039ae7f11d89f082bf841d3fe51f6
SHA1 hash:
8998e1ee5eae718fa3538a2479b9cd3b5cd6e77d
Link:
https://www.unpac.me/results/a0f0f835-786f-4c56-92b9-991290d388f1/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/c788d595c895/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/c788d595c8952558670f3420d11677f9455803c953e6614546013efdc4967725

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:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe c788d595c8952558670f3420d11677f9455803c953e6614546013efdc4967725

(this sample)

  
Delivery method
Distributed via e-mail attachment

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