MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71cb97b67ebcc50a0bef217b3ca9591cfa49f6b8c8d11ee9952c2cde0b7b6a51. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 71cb97b67ebcc50a0bef217b3ca9591cfa49f6b8c8d11ee9952c2cde0b7b6a51
SHA3-384 hash: 554e7757b657e46c325847c01fbb874903f1a1295b8c6664dacf64e931b510575ceb2e5505a5e01c06d7fa648cc11e75
SHA1 hash: 500f8852aa4cf26eb57d544fa3017bbab75aafce
MD5 hash: 54c6e68d889239ef978e4221f8add60f
humanhash: music-jupiter-beer-ack
File name:PO91206762.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:198'944 bytes
First seen:2021-07-21 13:52:02 UTC
Last seen:2021-07-23 02:05:27 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash d7cd0c2a85ac74a96a6bff797c472b4b (1 x AgentTesla, 1 x Formbook, 1 x SnakeKeylogger)
ssdeep 3072:rrJfUq2HOAp1sll7rzhuwXGI3AJwC1ZGLt+5zsZ/bcm/tDhxABxVr6XBMf8n:rtct8xrEwWXwzLtHZ/byBxo9
Threatray 6'637 similar samples on MalwareBazaar
TLSH T1D914123C971D660CC392C63E28BC12BB2187F530B99F1C7BA72051E505BEAE45C25B6E
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
116
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO91206762.exe
Verdict:
Malicious activity
Analysis date:
2021-07-21 15:56:57 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/035f63e5-bf92-4b2a-8c96-79dabed55fcc

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/173000/
Detection(s):
SecuriteInfo.com.Trojan.Siggen14.45102.31928.7483.UNOFFICIAL
Create hunting rule

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/95c59743-5de9-4eca-af4b-b4ce83a96471
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/819526
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found malware configuration
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 451937 Sample: PO91206762.exe Startdate: 21/07/2021 Architecture: WINDOWS Score: 100 34 www.zamlgroup.com 2->34 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 6 other signatures 2->44 11 PO91206762.exe 2->11         started        signatures3 process4 signatures5 52 Detected unpacking (changes PE section rights) 11->52 54 Maps a DLL or memory area into another process 11->54 56 Tries to detect virtualization through RDTSC time measurements 11->56 14 PO91206762.exe 11->14         started        process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 17 explorer.exe 14->17 injected process8 dnsIp9 28 www.yjhlgg.com 17->28 30 www.roorisor.com 17->30 32 2 other IPs or domains 17->32 36 System process connects to network (likely due to code injection or exploit) 17->36 21 systray.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/71cb97b67ebcc50a0bef217b3ca9591cfa49f6b8c8d11ee9952c2cde0b7b6a51/
Threat name:
Win32.Trojan.VirRansom
Create hunting rule
Status:
Malicious
First seen:
2021-07-21 03:49:39 UTC
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ohfzpnt6xtcquc7pef5tzkkzdt5et5vyzdir52mvfqwn4c33njiq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
27b3ee09de06ff54ca8947425175ff4c07f48dc07df976ab42a7990ceeb5232c
Formbook
2a728511ab345b4207ea5959439df12205796548388cc170b427110f9cc247dd
Formbook
2bc313b25d9cabf26747b98eedc7bf0e2ed264375a5951cd2a16c671b7eb0df8
Formbook
30e3ae78d7104db0f2d4efa2d4588b1dce2e37a5f2a51968add9337108e1d610
Formbook
46a43e78123a8400e4eecc145ab51509a3cd7baae19f450d5150bb762d0bc34e
Formbook
5aa64b3eef03b9c837e37102be20cb4f537c524b2a2531bf1bf6dd6a02461d7e
Formbook
9de1892b227f07e8896b3dfa4d1f8b450bf2af962b1ec34f3075acc7a4187259
Formbook
b8ad131dedee5c7f3164a25f907a69c6f90632f901ecf50a61aa7e31b4c8334e
Formbook
cfee90218720f31491495dd353027017808fb3b9524d6c86ddfd016a372f627c
Formbook
d2d2d97ab2f2c78a230c58a61296504419d0b545c6c6d76193b654dfe9937499
Formbook
+ 6'627 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210721-bmgxep51d6/
Behaviour
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
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.yjhlgg.com/grve/
Unpacked files
SH256 hash:
8afb4b443e7cd9530293d42b0782a7c08e4c25f2bb33b15613bd5e016b47937a
MD5 hash:
3262a0b94c21371f333e342b31f87f13
SHA1 hash:
fb42ef406ee76e6e84f8456188dff8f85401d981
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/f3c347e8-2844-4f1e-af3d-27389db29c43/
Parent samples :
e92575edf627cec919538f92983c709e468c7c671fc8f7df767624b514e3104a
71cb97b67ebcc50a0bef217b3ca9591cfa49f6b8c8d11ee9952c2cde0b7b6a51
b663fea76aadbf574e5bb9f704ad689ec10f0d720b0b9641e70b27494fe4cc17
7b40c9c16df4b35ae04076a8afd38c4fe4bf5525bb388ea3871ec2371fa9e049
57f24fb8b5067342be6583d562e3f4e2eda6657e6574cf41290c6c0faa6e508b
a3381d8be907792db980f3e9cca2965af5b5f9057fc717a5de48760feb45aa49
SH256 hash:
71cb97b67ebcc50a0bef217b3ca9591cfa49f6b8c8d11ee9952c2cde0b7b6a51
MD5 hash:
54c6e68d889239ef978e4221f8add60f
SHA1 hash:
500f8852aa4cf26eb57d544fa3017bbab75aafce
Link:
https://www.unpac.me/results/f3c347e8-2844-4f1e-af3d-27389db29c43/
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/71cb97b67ebcc50a0bef217b3ca9591cfa49f6b8c8d11ee9952c2cde0b7b6a51

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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 71cb97b67ebcc50a0bef217b3ca9591cfa49f6b8c8d11ee9952c2cde0b7b6a51

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/173000/

Comments