MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 25dce07a08e1126404921a1c9cc4fc3fc06e6a8f4bbbc09d4c3fe4b24c9a4ddf. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
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SHA256 hash: 25dce07a08e1126404921a1c9cc4fc3fc06e6a8f4bbbc09d4c3fe4b24c9a4ddf
SHA3-384 hash: aa70557a2e521b67649ca20082593a9d3c2effb649656fedbc4032d958edcb5ce3d35ea4b36527430f22ff6e49905910
SHA1 hash: 314e081ca3f1157fcde5ce1b09ffff9caa38f010
MD5 hash: e31235385ceeecb067cc097d994ed6e3
humanhash: yankee-asparagus-undress-idaho
File name:chizzy.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:298'111 bytes
First seen:2021-11-29 14:19:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla)
ssdeep 6144:rGidHl/qm3shbAOAVKw7cYKytP/HxfgrSBJkXVjJJ/1cH1Av:RXchcOAvcYt/RfOll91Q10
Threatray 11'755 similar samples on MalwareBazaar
TLSH T18F54124775C5CEBBC39216724677F778AAF7D1D241AE0F0BD7246F6728218D3882A182
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
153
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
06a77a301ec7e5b0ffde60c193b25f83ae835db7561bd1fc2438bb69d6c5e85a.xlsx
Verdict:
Malicious activity
Analysis date:
2021-11-29 08:49:22 UTC
Tags:
exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/02c273c5-cdbf-4bc4-b5fd-b06a85e7a413

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

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Unauthorized injection to a recently created process
DNS request
Launching a process
Searching for synchronization primitives
Сreating synchronization primitives
Launching cmd.exe command interpreter
Reading critical registry keys
Sending a custom TCP request
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
  0/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/144/overview
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
60%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/61a4e195bbfd2af97cba1af1/reports/bbeb9432-900f-49ba-942e-9a22aca20e5f/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a2e2382d-d681-4f0b-9bc2-3928e3881d4c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/897937
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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
Self deletion via cmd delete
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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: 530424 Sample: chizzy.exe Startdate: 29/11/2021 Architecture: WINDOWS Score: 100 31 www.funeralsservicewebjap.com 2->31 33 www.findmybracesuk.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 6 other signatures 2->47 11 chizzy.exe 17 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\qcmwrodjfgw.dll, PE32 11->29 dropped 59 Tries to detect virtualization through RDTSC time measurements 11->59 61 Injects a PE file into a foreign processes 11->61 15 chizzy.exe 11->15         started        signatures6 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 18 explorer.exe 15->18 injected process9 dnsIp10 35 www.griyapedia.com 172.247.35.143, 49795, 80 ZNETUS United States 18->35 37 www.ksxsh.com 156.234.14.147, 49792, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 18->37 39 6 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 rundll32.exe 18->22         started        signatures11 process12 signatures13 51 Self deletion via cmd delete 22->51 53 Modifies the context of a thread in another process (thread injection) 22->53 55 Maps a DLL or memory area into another process 22->55 57 Tries to detect virtualization through RDTSC time measurements 22->57 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/25dce07a08e1126404921a1c9cc4fc3fc06e6a8f4bbbc09d4c3fe4b24c9a4ddf/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-29 14:18:50 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=exooa6qi4ejgibesdiojzrh4h7ag42upjo54bhkmh7slete2jxpq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2f46c6eb0fdc1567d3d51a3fb9b7c3d6247a4f51c8043d2f076770bdd193f4ff
Formbook
49609c0487ceeec0771547efd9277b01f494be83549bc0245330672ee962c50c
Formbook
5898ff655531cce98050d6ac064d14b5e64249c3e8a01110e12b46e93bf72de9
Formbook
5ab3abbaaa772885b083fd8bd8d5855e8c6578c4a7cbaeef2cf68c1a3f4c1e11
Formbook
5d34c22ad79b26915cf70f298b1a7d93fd2a30bdafe2926fe0a430692e2fbb80
Formbook
6cbe56928a6ebd559194c8ca4537521d2485a728598d679d2d70de7052cb1501
Formbook
85601ede72b1c348db5663e3782e7b3f3157c2356e2c90b769bb2afc2d476e4c
Formbook
aea2232a122d01c07c5d7e6a10ceef2d2ffa58c10812f95f965f17aa78e82efa
Formbook
e22a659b73048b31aba79fce8de22ddd5a287494b763fec8d5779869dfebbf31
Formbook
+ 11'745 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:f2k1 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/211129-rne65accbm/
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 WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.musical-offerings.com/f2k1/
Unpacked files
SH256 hash:
25dce07a08e1126404921a1c9cc4fc3fc06e6a8f4bbbc09d4c3fe4b24c9a4ddf
MD5 hash:
e31235385ceeecb067cc097d994ed6e3
SHA1 hash:
314e081ca3f1157fcde5ce1b09ffff9caa38f010
Link:
https://www.unpac.me/results/0cb8bc57-2401-4780-b69a-919cfe178871/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/25dce07a08e1/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.47
Link:
https://yomi.yoroi.company/submissions/25dce07a08e1126404921a1c9cc4fc3fc06e6a8f4bbbc09d4c3fe4b24c9a4ddf

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.

  
Delivery method
Other
  
URLhaus
https://urlhaus.abuse.ch/url/1832661/

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