MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21da3823ffb535bf77b19ce43b741011f3783180ab5d74e2aab69ce311ed86fb. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 21da3823ffb535bf77b19ce43b741011f3783180ab5d74e2aab69ce311ed86fb
SHA3-384 hash: 1bb450f99c4d4b5c57ba6ec89cc25c4014e73a0e5bdfc6cfff46f0399720d58f8a1ba59bb1e54fcfc05828621d86460a
SHA1 hash: 1cf6f55e113da6d0d73437575765636be7e94416
MD5 hash: f8e122f72847d6c6133b410dd9d06a8f
humanhash: cardinal-virginia-harry-twelve
File name:f8e122f72847d6c6133b410dd9d06a8f.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:373'401 bytes
First seen:2021-07-30 06:13:10 UTC
Last seen:2021-07-30 06:44:32 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 93c8a344ef87e9896779f819a07dc9df (2 x Formbook, 1 x AveMariaRAT)
ssdeep 6144:FVyyLh9/9hNNBldy0dgpffM8SVvc+j/rz6ceAbzF62/nMeWXQN:7tb/HHBHnd4fffkco2ZAf7WX2
Threatray 7'154 similar samples on MalwareBazaar
TLSH T10C84DF0274B18432E4320A345690E56D1E6EFC02CE7B9E93365AAEEF3FF85428D35975
dhash icon 60e0cccccccce060 (5 x Formbook, 5 x AgentTesla, 3 x RedLineStealer)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
570
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO. 2100002(R.xlsx
Verdict:
Malicious activity
Analysis date:
2021-07-30 05:02:32 UTC
Tags:
encrypted exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/5a886587-5824-40a4-8d03-8cb1c28ab124

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/175196/
Detection(s):
SecuriteInfo.com.Generic.Cryptor.X.0424F191.25637.24969.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/e2a72d89-94a3-4705-b906-d600f82ac349
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/824333
Signature
C2 URLs / IPs found in malware configuration
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
Sigma detected: Dridex Process Pattern
Sigma detected: Suspicious Svchost Process
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
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 456743 Sample: UOnC8n9rjZ.exe Startdate: 30/07/2021 Architecture: WINDOWS Score: 100 31 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->31 33 Found malware configuration 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 7 other signatures 2->37 9 UOnC8n9rjZ.exe 2->9         started        process3 signatures4 39 Writes to foreign memory regions 9->39 41 Maps a DLL or memory area into another process 9->41 12 svchost.exe 9->12         started        process5 signatures6 43 Modifies the context of a thread in another process (thread injection) 12->43 45 Maps a DLL or memory area into another process 12->45 47 Sample uses process hollowing technique 12->47 49 2 other signatures 12->49 15 help.exe 12->15         started        18 explorer.exe 12->18 injected process7 dnsIp8 51 Modifies the context of a thread in another process (thread injection) 15->51 53 Maps a DLL or memory area into another process 15->53 55 Tries to detect virtualization through RDTSC time measurements 15->55 21 cmd.exe 1 15->21         started        25 olimpobarberiaspa.com 50.31.188.40, 49743, 80 SERVERCENTRALUS United States 18->25 27 www.travelature.com 18->27 29 www.olimpobarberiaspa.com 18->29 57 System process connects to network (likely due to code injection or exploit) 18->57 signatures9 process10 process11 23 conhost.exe 21->23         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/21da3823ffb535bf77b19ce43b741011f3783180ab5d74e2aab69ce311ed86fb/
Threat name:
Win32.Ransomware.Cryptor
Create hunting rule
Status:
Malicious
First seen:
2021-07-30 05:17:10 UTC
AV detection:
10 of 46 (21.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ehndqi77wu23655rttsdw5aqchzxqmmavnoxjyvkw2oogepnq35q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
046bf8a6c9bc47b10b80a2ca83289714a931b5d10d864e02d2e20fdc09301108
Formbook
169ccc389d18d44f4693c1de00f47e1b405f530ea90903b68c23523fe86592b7
Formbook
4717b1585971b702c8e32e5054b5514dc4e6ed5a5f50434d66f43c79d15354c6
Formbook
507dbfd6aa22a40c64e153af688a18c03616e3473eee95f5312f6e9b2b3beb5a
Formbook
818b8b831f3c774e034e2794f1eae71f62f5388355916e948b472cfdac7f5508
Formbook
8c988a622b822f0fc226b928ab317dc7a6130b395f74a3e39c3443b275c93771
Formbook
a2e99d0aabd8f0ad83b885eccf313563526a58b2da435bf34dad29294c712efe
Formbook
d0116b0ea676a655b1d55a2b7a79fb2585c1d04803e9d1d6f9cd1da15f789138
Formbook
d0b2bc00645de803a4e9df303539995ee8f781631684b04fe67ee7e01bcf9c21
Formbook
+ 7'144 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/210730-mv62gpkx4a/
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
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.fortmyerscruisevacation.com/dd2v/
Unpacked files
SH256 hash:
75e7c0608030fa52655b7d3f44d8701ef488f85e27814418f7c48cf81dca6992
MD5 hash:
0c2f9c31e0d412847c5d72150e82419e
SHA1 hash:
0e5006ee397ce5b5bf2397bc4cbf7359ea4b1f33
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/f9567ef0-9c51-46b6-bb53-0a242ed8cec5/
Parent samples :
8c988a622b822f0fc226b928ab317dc7a6130b395f74a3e39c3443b275c93771
4717b1585971b702c8e32e5054b5514dc4e6ed5a5f50434d66f43c79d15354c6
21da3823ffb535bf77b19ce43b741011f3783180ab5d74e2aab69ce311ed86fb
edda9af73a29d4e3456a1fd3a67d3a1aabd9692d4f4feba564db139f86201960
b21eb6d14eae70e233132e7fa4e99fb282209f1c6ea8ba4d984e9585ee965e87
1e716fc850ee142cf712e56d074ee9b6a3855014612513bb0f447fab5b8c9fc8
c74a1ee1bb642221d811a5c617c175c09bca2cf5d6937f7981b9825eab5ef127
SH256 hash:
21da3823ffb535bf77b19ce43b741011f3783180ab5d74e2aab69ce311ed86fb
MD5 hash:
f8e122f72847d6c6133b410dd9d06a8f
SHA1 hash:
1cf6f55e113da6d0d73437575765636be7e94416
Link:
https://www.unpac.me/results/f9567ef0-9c51-46b6-bb53-0a242ed8cec5/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/21da3823ffb5/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/21da3823ffb535bf77b19ce43b741011f3783180ab5d74e2aab69ce311ed86fb

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: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

File information

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

Web download

Formbook

Executable exe 21da3823ffb535bf77b19ce43b741011f3783180ab5d74e2aab69ce311ed86fb

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1491559/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/175196/

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