MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 05af1ccc6696a83c58e46a5347b40959329af79869e9747399befbe97c85104b. 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 2 File information Comments
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SHA256 hash: 05af1ccc6696a83c58e46a5347b40959329af79869e9747399befbe97c85104b
SHA3-384 hash: 43bbbb958705b6f50bfe5e8b691856b703df5dfc5d49a4e63968fc467e99d2c24c3299a36cd781e8a6cee645bc5b5a65
SHA1 hash: 9d1ac2d6386ee6b6e73ff5d92ec249109b0b3998
MD5 hash: 1585559435eeee4593f357bd25490d33
humanhash: california-chicken-equal-nebraska
File name:invoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:328'752 bytes
First seen:2022-02-26 13:46:57 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:TxDy00WVSCU1cNsEASC9B5DM7RcPcpJiRMCMgm8btrfi3N9VAS:I0jI1crASC9vDM74cGRLMgdbxfiFAS
Threatray 13'793 similar samples on MalwareBazaar
TLSH T1836412A82CE0D1A7C0081AF99CF2672AD3F7C31D1A7626475F941FB16D3A692EA107D1
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter TeamDreier
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
281
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/244987/
Detection(s):
Win.Malware.Fragtor-9940004-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Сreating synchronization primitives
Searching for synchronization primitives
Launching a process
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/621a2f5edfdfa8501c602ac3/reports/2643e421-dac9-4347-ab75-740c0c1f5403/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/9d49f705-fe7c-41a4-9e21-d76230e62c76
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/946722
Signature
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 579203 Sample: invoice.exe Startdate: 26/02/2022 Architecture: WINDOWS Score: 100 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 Multi AV Scanner detection for submitted file 2->44 46 4 other signatures 2->46 10 invoice.exe 18 2->10         started        process3 file4 30 C:\Users\user\AppData\...\bciwvjwvqc.exe, PE32 10->30 dropped 13 bciwvjwvqc.exe 10->13         started        process5 signatures6 52 Multi AV Scanner detection for dropped file 13->52 54 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 13->54 56 Tries to detect virtualization through RDTSC time measurements 13->56 58 Injects a PE file into a foreign processes 13->58 16 bciwvjwvqc.exe 13->16         started        process7 signatures8 32 Modifies the context of a thread in another process (thread injection) 16->32 34 Maps a DLL or memory area into another process 16->34 36 Sample uses process hollowing technique 16->36 38 Queues an APC in another process (thread injection) 16->38 19 msiexec.exe 16->19         started        22 explorer.exe 16->22 injected process9 signatures10 48 Modifies the context of a thread in another process (thread injection) 19->48 50 Maps a DLL or memory area into another process 19->50 24 cmd.exe 1 19->24         started        26 explorer.exe 111 19->26         started        process11 process12 28 conhost.exe 24->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/05af1ccc6696a83c58e46a5347b40959329af79869e9747399befbe97c85104b/
Threat name:
Win32.Trojan.NSISInject
Create hunting rule
Status:
Malicious
First seen:
2022-02-24 05:53:11 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
27 of 43 (62.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=awxrztdgs2udywhenjjupnajlezjv54ynhuxi44zx356s7efcbfq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0da36b7f7e4b44b640ab5769532fdd7599032ca2b1d6b57807ba48ad1fa76780
Formbook
2a4415721925c12ce8a80719697ffbda5daf88fe34804b0549bc5d5605790cdb
Formbook
2c13447326df9da1edb4700336d4cf841f7575b7505df68ef2ae7bdb6f2d9f5c
Formbook
5f8d69976e4d3c9b6508cd376dcab4971a605d8d1122952ad604f7b48d2ef1e1
Formbook
705bf99df489a6945a540499bc8c6d7b7564d9a255629e326013d4a85bb77a78
Formbook
75362f20dab8d57db3ade6427e647b0bc01d8345ccfa9781d5778877f04f7fb5
Formbook
89a5384b284e44d23891f6b22590f0194c4ac0b2b6507bb51fa678ede6d6069a
Formbook
8e2fa281cc72512de1fc53eb27a9c04a524ce87c3cdf5932931ea3dc463a459a
Formbook
9e6a92df11bb23b335d5bbf85731a1ea96f6c4038a24c2e4edb28e2169804c30
Formbook
cfd1a77378decd68cd7a59307b77b93247bdd91e00de5111ecae6b5658c8665f
Formbook
+ 13'783 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:n6i5 loader rat suricata
Link:
https://tria.ge/reports/220226-q3jbnacdaj/
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
Loads dropped DLL
Executes dropped EXE
Xloader Payload
suricata: ET MALWARE FormBook CnC Checkin (GET)
Xloader
Unpacked files
SH256 hash:
8e559beb07888fd164595f7bd3e0b8a831e5f46ad43299f531d6a9a8bc81b044
MD5 hash:
df3ff08b2e940635f7869caed599ba7a
SHA1 hash:
1650d406a9101e56960bcf7b8bea214f66000d6f
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3ed8843b-dc6a-4f79-862f-e491dd8dbb7f/
Parent samples :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 hash:
c8cabc032114f3af8a7068087aa3e5f4e7a2922b85fa6e8b48d73f7f21870937
MD5 hash:
2ac7474c4a3aac817a6674a625e960b5
SHA1 hash:
04717dac11e1eba6745f5d3db36f5ed45351fd03
Link:
https://www.unpac.me/results/3ed8843b-dc6a-4f79-862f-e491dd8dbb7f/
SH256 hash:
05af1ccc6696a83c58e46a5347b40959329af79869e9747399befbe97c85104b
MD5 hash:
1585559435eeee4593f357bd25490d33
SHA1 hash:
9d1ac2d6386ee6b6e73ff5d92ec249109b0b3998
Link:
https://www.unpac.me/results/3ed8843b-dc6a-4f79-862f-e491dd8dbb7f/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/05af1ccc6696a83c58e46a5347b40959329af79869e9747399befbe97c85104b

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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 05af1ccc6696a83c58e46a5347b40959329af79869e9747399befbe97c85104b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/244987/

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