MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f40c731716d135ea7e583819570a83d92e24c3dfb2a3b0ac375bd97774ffd689. 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 3 File information Comments
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SHA256 hash: f40c731716d135ea7e583819570a83d92e24c3dfb2a3b0ac375bd97774ffd689
SHA3-384 hash: 2d74f9362c504ea0cd9eae8b9586234b17461e922e1a1e87b99a849bbdab5dd8d0144ff60b680610de34b65d732919de
SHA1 hash: 7855d161dc42e4a0936f71274c9142950fc542c8
MD5 hash: e3d87c2d533796d8a78793bf4ef179ec
humanhash: mars-ack-bulldog-black
File name:PO4809217226898789.pdf.exe
Download: download sample
Signature Formbook
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File size:355'328 bytes
First seen:2021-10-29 10:43:24 UTC
Last seen:2021-10-29 12:24:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 6144:GZRNbMMSgoWYaE/CLwwpWv3vTwb9u+HVdBi8ZSB4GRtcnwvjvBCNdLc:+b/HNTE6LsPk9u+HPBfbwvj5C7
Threatray 10'943 similar samples on MalwareBazaar
TLSH T1CF74125D4AE8DA31CEF525B820A981C977F942196220E65B1A0273DB7EFF703C093F59
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
158
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO4809217226898789.pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-10-29 11:37:41 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/1d44666b-6d38-4a7f-9995-810a0a63c2e9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1085.12580.13128.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c7c1987a-80c3-4f28-89ce-247938324948
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/879235
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
Self deletion via cmd delete
Sigma detected: Suspicious Double Extension
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 an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 511669 Sample: PO4809217226898789.pdf.exe Startdate: 29/10/2021 Architecture: WINDOWS Score: 100 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 11 other signatures 2->44 10 PO4809217226898789.pdf.exe 3 2->10         started        process3 file4 30 C:\Users\...\PO4809217226898789.pdf.exe.log, ASCII 10->30 dropped 56 Tries to detect virtualization through RDTSC time measurements 10->56 58 Injects a PE file into a foreign processes 10->58 14 PO4809217226898789.pdf.exe 10->14         started        17 PO4809217226898789.pdf.exe 10->17         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 19 explorer.exe 14->19 injected process8 dnsIp9 32 gtm-cn-zvp2b68zj0t.gtm-a2b4.com 172.247.80.58, 49827, 80 CNSERVERSUS United States 19->32 34 shops.myshopify.com 23.227.38.74, 49802, 80 CLOUDFLARENETUS Canada 19->34 36 5 other IPs or domains 19->36 46 System process connects to network (likely due to code injection or exploit) 19->46 23 cscript.exe 19->23         started        signatures10 process11 signatures12 48 Self deletion via cmd delete 23->48 50 Modifies the context of a thread in another process (thread injection) 23->50 52 Maps a DLL or memory area into another process 23->52 54 Tries to detect virtualization through RDTSC time measurements 23->54 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/f40c731716d135ea7e583819570a83d92e24c3dfb2a3b0ac375bd97774ffd689/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-10-27 03:32:47 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6qghgfyw2e26u7syhamvocud3excjq67wkr3blbxlpmxo5h722eq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
21aa20c4adfe3bea202c5e1d3915072546ee0b927060e02e8c57ffc54caef90a
Formbook
4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301
Formbook
85601ede72b1c348db5663e3782e7b3f3157c2356e2c90b769bb2afc2d476e4c
Formbook
9404982e0cf941d6103e40246a6689d91be00c03c8d9072e42ebf56bd9080492
Formbook
aea2232a122d01c07c5d7e6a10ceef2d2ffa58c10812f95f965f17aa78e82efa
Formbook
d6a8c5f4120e3be2e6d676d808dbdadc074f811398ac5b03878baba7275137d4
Formbook
d95ea981292e062e17b671022beaf00ee5c5ad6fbebf092096de7f1ecf27c4c1
Formbook
f358d592a02990a899bc4ca7c35804529237cbffac5dcabb3e7e3916a79afbb4
Formbook
+ 10'933 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:gr1c rat spyware stealer trojan
Link:
https://tria.ge/reports/211029-mstsvsdbc4/
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
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.illusiontrick.com/gr1c/
Unpacked files
SH256 hash:
69c4bb6e6d3a50682f5bed090fc0d85e2f316760dcb33616a5b4da0a085bc4bf
MD5 hash:
e0f4e3bb8f985bf035f08b4c716f8a42
SHA1 hash:
d90ca36998b24d6af4727bf69ff4062446f8c53f
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/69f22c7e-b644-4a4c-b4f9-31dced183592/
Parent samples :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 hash:
bb2b4cec683d7fb3de9b9d9bf1eb819a4ac0e87d163867429ff35e2a4c8d54c2
MD5 hash:
cb49b1e4eb0535901195d84e0255d7aa
SHA1 hash:
492023feb331d9a92953b244368811ec001ce19a
Link:
https://www.unpac.me/results/69f22c7e-b644-4a4c-b4f9-31dced183592/
SH256 hash:
a5c2baaf64d2f20666f5d02876e9f5b59d8ec5c538ee82f1711d9d0db3f189e0
MD5 hash:
8ecd3b39d0778503439b9e9dd0475b2d
SHA1 hash:
249f0f11920286ba191592bfaf13a2c0d7cc7ca6
Link:
https://www.unpac.me/results/69f22c7e-b644-4a4c-b4f9-31dced183592/
SH256 hash:
f40c731716d135ea7e583819570a83d92e24c3dfb2a3b0ac375bd97774ffd689
MD5 hash:
e3d87c2d533796d8a78793bf4ef179ec
SHA1 hash:
7855d161dc42e4a0936f71274c9142950fc542c8
Link:
https://www.unpac.me/results/69f22c7e-b644-4a4c-b4f9-31dced183592/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/f40c731716d135ea7e583819570a83d92e24c3dfb2a3b0ac375bd97774ffd689

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:pe_imphash
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Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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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 f40c731716d135ea7e583819570a83d92e24c3dfb2a3b0ac375bd97774ffd689

(this sample)

  
Delivery method
Distributed via e-mail attachment

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