MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a0c664d82e4afec5a99eb7aa2a3d07945e08071c63026bf9f22affb9e49412b6. 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: 15


Intelligence 15 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a0c664d82e4afec5a99eb7aa2a3d07945e08071c63026bf9f22affb9e49412b6
SHA3-384 hash: 3724b8e18d9aec29ccbd4a08962ae536420ad91ad0e0251c52e4e680832cb315ddb139cc83ea2f47f281eaedaffbef8e
SHA1 hash: a21bbd1affddf22d5c4d8b9b28799427f66ead70
MD5 hash: b43a43991c9db8254925b6c972bf5d27
humanhash: maryland-pennsylvania-sad-florida
File name:docx_001.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:564'964 bytes
First seen:2021-12-28 18:16:48 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 12288:yoxsOsDo00vvhjyHiP31wFpDHudUkIswOF:OV07IpDHEx
Threatray 12'533 similar samples on MalwareBazaar
TLSH T15AC49FABCB172AAFC47824B6C577B6A3A2C847E8BC3987D1E1401735D23D566FD02346
File icon (PE):PE icon
dhash icon c4cca9d2c4c0d1d2 (1 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
183
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
docx_001.exe
Verdict:
Malicious activity
Analysis date:
2021-12-28 18:20:09 UTC
Tags:
installer
Link:
https://app.any.run/tasks/843bb1db-9ebe-4077-a0c7-97d4295db361

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/216698/
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
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending a custom TCP request
Reading critical registry keys
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
60%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/61cb54a14ab5c44cbf550ebd/reports/fe055149-b58a-4241-905d-70ffb64c5d27/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/1ae4d926-fbd0-43b6-853b-968d549c8650
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/913537
Signature
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 546015 Sample: docx_001.exe Startdate: 28/12/2021 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 3 other signatures 2->42 10 docx_001.exe 17 2->10         started        process3 file4 28 C:\Users\user\AppData\Local\...\hdyas.dll, PE32 10->28 dropped 54 Tries to detect virtualization through RDTSC time measurements 10->54 56 Injects a PE file into a foreign processes 10->56 14 docx_001.exe 10->14         started        signatures5 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 30 www.mississippics.com 43.128.43.159, 49802, 80 LILLY-ASUS Japan 17->30 32 www.mikrozaem-online24.store 45.130.41.12, 49803, 80 BEGET-ASRU Russian Federation 17->32 34 2 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 raserver.exe 17->21         started        signatures10 process11 signatures12 46 Self deletion via cmd delete 21->46 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 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/a0c664d82e4afec5a99eb7aa2a3d07945e08071c63026bf9f22affb9e49412b6/
Threat name:
Win32.Trojan.SpyNoon
Create hunting rule
Status:
Malicious
First seen:
2021-12-28 18:17:12 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uddgjwbojl7mlkm6w6vcupihsrpaqby4mmbgx6psfl73tzeuck3a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
06d3dc4da506d3c92fd8b82b27d92dec4036fd9622727c6e31cc314ea18ca518
Formbook
26f8a3be2038752ea7ea42cffe424d460ac03d3128f2e9305259c48a9431a09a
Formbook
4bc96a8bb1739c227e539a7aa4156cb6c1023a254e2660135351edbe9a7db8e2
Formbook
6d6b50ac34692e324b25147855ff3a075b1d5505f7fd550e405bca20ad94879a
Formbook
9ef59c316ef7c708193c4f92d61218a7ef39c6ab788f88853c2c374968037006
Formbook
e0b4a1d31c1f8f4a2850508bba55f9dc97f55f33519c333fbba71a9f931d0793
Formbook
ee529100b5fc7566711f13b97f573e81dccbb4a2b6713f35797b8c0d284b80b2
Formbook
f014d9e6a00f7dab0718e5320ebc0185b63c080ab7b3e9d49f0f1eea48c0c09a
Formbook
+ 12'523 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:st28 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/211228-ww2sbacfen/
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)
Unpacked files
SH256 hash:
550baec93fdb67462ebb97d3b86711596d3c903a2303694805180b5ca621a2c0
MD5 hash:
5f149575ae76af9452a2ea5bce91ebf3
SHA1 hash:
e3d96ee81df0defc3b46f1c6b82f1907e773af9f
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/9dca607b-698e-41c0-bce1-2abb08b2ef40/
Parent samples :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 hash:
c2c41de1fab0ca1e61f8420b4086e5eb84e457d424e89d669337f392c4595740
MD5 hash:
a3ccd4453511f47b6d6965deabd1821a
SHA1 hash:
ae887b647b360aa3d05a1f4f34faf4277efb0373
Link:
https://www.unpac.me/results/9dca607b-698e-41c0-bce1-2abb08b2ef40/
SH256 hash:
a0c664d82e4afec5a99eb7aa2a3d07945e08071c63026bf9f22affb9e49412b6
MD5 hash:
b43a43991c9db8254925b6c972bf5d27
SHA1 hash:
a21bbd1affddf22d5c4d8b9b28799427f66ead70
Link:
https://www.unpac.me/results/9dca607b-698e-41c0-bce1-2abb08b2ef40/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/a0c664d82e4a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.33
Link:
https://yomi.yoroi.company/submissions/a0c664d82e4afec5a99eb7aa2a3d07945e08071c63026bf9f22affb9e49412b6

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.

Malspam

Formbook

Executable exe a0c664d82e4afec5a99eb7aa2a3d07945e08071c63026bf9f22affb9e49412b6

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/216698/

Comments