MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 684c1789d8d0a6fa2c5b2e0e3d408007f972533b853f4cd7420689c61209bbcc. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 684c1789d8d0a6fa2c5b2e0e3d408007f972533b853f4cd7420689c61209bbcc
SHA3-384 hash: a3f55cee12c33dd69595ec11f89aea514fa93f295f893b1b85fd447b419d61de72f6954ce94478b96ec7c83cd61dd964
SHA1 hash: cbb29300c716a34a20bede8fc40d41360d5a8b07
MD5 hash: 18c5d1fd1910ccf9b96bec093c0e60e8
humanhash: video-pasta-seven-island
File name:2021091400983746_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:873'472 bytes
First seen:2021-09-14 08:20:47 UTC
Last seen:2021-09-14 13:07:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:rRk4DbF53e0IUFLs+pBcgA7v3dIWmw4eBU84LYPatfMrSfQmrxfre:1wVgA7vtII1S810MrxUxfC
Threatray 9'222 similar samples on MalwareBazaar
TLSH T1B1057C1036E9CF15E03F6EB5C9E1A1F5472BBE22ED0297DB20847F463A736819D90627
dhash icon 0f519373d9cc750b (107 x AgentTesla, 20 x AveMariaRAT, 5 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
241
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2021091400983746_pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-09-14 08:23:46 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/28af9b55-5ad3-491c-81c7-1f75193358ee

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/187728/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.30685.23794.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61750c5ddb358dd15ed9220b/reports/5ad72885-4423-4bb9-b2f9-0204b644653c/overview
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8bd9bca3-f752-41ab-8b22-82ab0dbdd8dc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/850600
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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 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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 483029 Sample: 2021091400983746_pdf.exe Startdate: 14/09/2021 Architecture: WINDOWS Score: 100 39 www.kasethunsa.com 2->39 41 kasethunsa.com 2->41 49 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->49 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 12 other signatures 2->55 11 2021091400983746_pdf.exe 6 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\...behaviorgraphKgqgSerwVTCL.exe, PE32 11->33 dropped 35 C:\...behaviorgraphKgqgSerwVTCL.exe:Zone.Identifier, ASCII 11->35 dropped 37 C:\Users\user\AppData\Local\...\tmp44DA.tmp, XML 11->37 dropped 69 Uses schtasks.exe or at.exe to add and modify task schedules 11->69 71 Tries to detect virtualization through RDTSC time measurements 11->71 15 2021091400983746_pdf.exe 11->15         started        18 schtasks.exe 1 11->18         started        signatures6 process7 signatures8 73 Modifies the context of a thread in another process (thread injection) 15->73 75 Maps a DLL or memory area into another process 15->75 77 Sample uses process hollowing technique 15->77 79 Queues an APC in another process (thread injection) 15->79 20 explorer.exe 15->20 injected 24 conhost.exe 18->24         started        process9 dnsIp10 43 www.edenwholistichealth.com 91.195.240.13, 49820, 80 SEDO-ASDE Germany 20->43 45 manyeeexpress2208.com 47.88.88.146, 49819, 80 CNNIC-ALIBABA-US-NET-APAlibabaUSTechnologyCoLtdC United States 20->45 47 13 other IPs or domains 20->47 57 System process connects to network (likely due to code injection or exploit) 20->57 59 Performs DNS queries to domains with low reputation 20->59 26 wscript.exe 20->26         started        signatures11 process12 signatures13 61 Self deletion via cmd delete 26->61 63 Modifies the context of a thread in another process (thread injection) 26->63 65 Maps a DLL or memory area into another process 26->65 67 Tries to detect virtualization through RDTSC time measurements 26->67 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/684c1789d8d0a6fa2c5b2e0e3d408007f972533b853f4cd7420689c61209bbcc/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2021-09-14 01:54:35 UTC
AV detection:
12 of 44 (27.27%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=nbgbpcoy2ctpulc3fyhd2qeaa74xeuz3qu7uzv2ca2e4meqjxpga._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1dc173b24c0b503a394568e4a1fff7887dd739cc287e529f25b173dbfea4010b
Formbook
6b7bd383f832bdf845fc7632d277abef4c35815afd1c285102d63cd9dcc7d466
Formbook
8855c73a66320b1d62c22f7af62feb301d13e4b68f4edfba64bf47473ad58c4a
Formbook
895ac6ed45076477649b8b8fd01976b9753ae33cfa350b7dbdf27a6f1bb154a7
Formbook
c2156cff89f8a8d7c21326afe3f22b6a152bdf92f1a04475da3488236d12698e
Formbook
c58abe9cc2eda9f80841417a5e8dd7c75416cf0183a6fda6b616a2c312450ab5
Formbook
ddd0a01812b2dba3e3373a246180349b74f3301ba3e218a81144785a13d8cad5
Formbook
ea9994b2d9543049c1bbd710592146c621673693508f6674190613625e68d9f2
Formbook
eb71f32d26de060a63615acc43153a83f87570e0edb43bc4e7b47caf45c34eee
Formbook
+ 9'212 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:zrmt loader rat suricata
Link:
https://tria.ge/reports/210914-j8zr9sachj/
Behaviour
Creates scheduled task(s)
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.desertgardenrealty.com/zrmt/
Unpacked files
SH256 hash:
2c02a78626378ea6e89e6102945d74a1d6766dcf5f25886fdd3d551d0f2e7b88
MD5 hash:
fa59ff8ce8ace5ed9463d3e90a7bcb65
SHA1 hash:
e5eb300c150b4a14be1ca8c5daf8f74c17ec952a
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/b65ac8d3-f113-4a75-a65f-f433e4738d6a/
Parent samples :
895ac6ed45076477649b8b8fd01976b9753ae33cfa350b7dbdf27a6f1bb154a7
c2156cff89f8a8d7c21326afe3f22b6a152bdf92f1a04475da3488236d12698e
eb71f32d26de060a63615acc43153a83f87570e0edb43bc4e7b47caf45c34eee
ea9994b2d9543049c1bbd710592146c621673693508f6674190613625e68d9f2
684c1789d8d0a6fa2c5b2e0e3d408007f972533b853f4cd7420689c61209bbcc
SH256 hash:
ad4a7895d529d5164302bb88596964ab42ff125bf0f5544418c80b6d438cb587
MD5 hash:
43ababb6b0a02907aad43084f12b10d9
SHA1 hash:
b60ba705891d5a666d64300181b475a46714ffa8
Link:
https://www.unpac.me/results/b65ac8d3-f113-4a75-a65f-f433e4738d6a/
SH256 hash:
ae34eeb04eabec7010877752853fa3f97adb4079a02fe7605328a12083079710
MD5 hash:
632a389040bebcec398d75d91f948de6
SHA1 hash:
70230fff1b57a81f1023789c89b85a08477e3e0d
Link:
https://www.unpac.me/results/b65ac8d3-f113-4a75-a65f-f433e4738d6a/
SH256 hash:
684c1789d8d0a6fa2c5b2e0e3d408007f972533b853f4cd7420689c61209bbcc
MD5 hash:
18c5d1fd1910ccf9b96bec093c0e60e8
SHA1 hash:
cbb29300c716a34a20bede8fc40d41360d5a8b07
Link:
https://www.unpac.me/results/b65ac8d3-f113-4a75-a65f-f433e4738d6a/
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/684c1789d8d0a6fa2c5b2e0e3d408007f972533b853f4cd7420689c61209bbcc

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
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 684c1789d8d0a6fa2c5b2e0e3d408007f972533b853f4cd7420689c61209bbcc

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/187728/

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