MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301
SHA3-384 hash: 7ecc9003f2d7a02c33ab13886257f872e687ea948aabeab5835d3dad521835fd14abed230320c89c93e76b517fae9fb2
SHA1 hash: 004197b9fc86d2271ddbdb0759927c13287bbca6
MD5 hash: 446ac30db49157402fa3c5e2fea9caec
humanhash: fourteen-fourteen-five-tennessee
File name:446ac30db49157402fa3c5e2fea9caec.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:544'256 bytes
First seen:2021-09-22 18:04:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:vs5pkNmtiS3/NpZZaBVr0aeTzRUD2YW9N4uk6APyk+GFM2XFI9R+RW72EOzufIbI:vs5YmtiK5oBuaeTzt4pP9++lRc2EFIx
Threatray 9'527 similar samples on MalwareBazaar
TLSH T17CC41335C55853BCDF798F7E211491490B71E1CA7B03FB5E2E92B0DABF4679080289B9
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
283
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
446ac30db49157402fa3c5e2fea9caec.exe
Verdict:
Suspicious activity
Analysis date:
2021-09-22 18:05:14 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/5edb9d2d-4412-494f-8879-09f125d03b4d

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/190365/
Detection(s):
SecuriteInfo.com.Variant.MSILHeracles.26929.UNOFFICIAL
Create hunting rule

Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/03ee143c-fe43-407e-927e-4ff0c43b7c4e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/855918
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
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
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 488351 Sample: B5Yevo6pjy.exe Startdate: 22/09/2021 Architecture: WINDOWS Score: 100 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 7 other signatures 2->44 10 B5Yevo6pjy.exe 3 2->10         started        process3 file4 30 C:\Users\user\AppData\...\B5Yevo6pjy.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 B5Yevo6pjy.exe 10->14         started        17 B5Yevo6pjy.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 www.lanyard-for-keys.com 19->32 34 www.indianlandbaseball.com 19->34 36 2 other IPs or domains 19->36 46 System process connects to network (likely due to code injection or exploit) 19->46 23 colorcpl.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
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-22 17:19:08 UTC
AV detection:
16 of 28 (57.14%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
157b65691069af6dacc64c99c9ae93a36377a97bf4030480ffc1f507db917a64
Formbook
410659d6e76a955d58e88df12ffea3550a57758513630f051c6e66caa343fdad
Formbook
6c0e85b84f2b1dfdb580a168386ad91efe7f734066ff3a12a0d359fcb4711dca
Formbook
7024147e75938acd54b804df172c63b57c794e1980632c5f8190ae1e9d0da82a
Formbook
7162b4c9de1772aa721d26d185fd1b7e32a9de5c6ebfd86cab3ef0ed7561a837
Formbook
99b495e7c6df7f7bf887cd2d7f143e4103dfaf57990a0712bac7d33a2c6d6f0c
Formbook
af0af3ebf3ac231ad77dbe4cbfa0fb2d48312d4ca0b5431081046ab09aa3b552
Formbook
d2d6a8c31acdd92eb9a005e2fac8838a382ab0425fc01bc88616bda185ab7b4c
Formbook
d39ec2fb7fa07bb6886173571262d2324d96b6e879ccc4f2cea46ece183e576a
Formbook
f03c40561ba64d0797bcf79bfefd015c8d9ca010f1bd67b3d27ffab584a9911e
Formbook
+ 9'517 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:bckt rat spyware stealer trojan
Link:
https://tria.ge/reports/210922-wn8wnaddc5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.picnictablecompany.com/bckt/
Unpacked files
SH256 hash:
7d7501fb22cb18f10bfac1575359ff3a7e9ba934985a8184d02e5a26a3c4801d
MD5 hash:
4c1f6f8f4bf9678c49d6ea74baca3576
SHA1 hash:
3209fc3defa6d9eeb8ed06fe8cbcf6a69c84c782
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/f707ef9f-cffc-4c74-8f0b-d7e2d7abff15/
Parent samples :
7024147e75938acd54b804df172c63b57c794e1980632c5f8190ae1e9d0da82a
4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301
2ac830fd4c5c4c3522b5cb9983edc13f2580b932875bc9daeb02633b8829fb3b
043b45f9d94820186d7324c5f6e0fd7661de15ad29104fd43294e2f3839efa06
92c90d735148f7fd056e2d53bf44239f3fdab6b029e78d3ed6077d9c7f40aef2
c7ea020c54d4ce9a629d57feb15e38fac8457b14221386111ef022735e375d13
5be742e9644f86ef1d407e5b3e85dff6211561e6dbf9c9fc85b0c5289b899979
SH256 hash:
e717ddf65b96b9217aec85d34aa5d2b32449e571ae4dfe30308a1b9c8213b4da
MD5 hash:
f9c494c35040ed0cf24c7eaddeddce1c
SHA1 hash:
c148cd5a996bc67b91c4e32f9d8b45e5a26857c1
Link:
https://www.unpac.me/results/f707ef9f-cffc-4c74-8f0b-d7e2d7abff15/
SH256 hash:
cac8b347040a359c02ae5e658d3d76230c7dd7eb33505605ed0b9bc49ff268c7
MD5 hash:
71a894ff252c767b80d65ab1e54fda2b
SHA1 hash:
bcc4ff628585ca28b8b0f2c30e63049b910d4d49
Link:
https://www.unpac.me/results/f707ef9f-cffc-4c74-8f0b-d7e2d7abff15/
SH256 hash:
147ecd8366e04d3a588130b2b17ecca1a9e752b9e48ff4c40d485ae26766ac04
MD5 hash:
bd34bb8ff6308655ef9302055180acb6
SHA1 hash:
8e31ad26d4df360b0c249c22b4fe636c2075057d
Link:
https://www.unpac.me/results/f707ef9f-cffc-4c74-8f0b-d7e2d7abff15/
SH256 hash:
4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301
MD5 hash:
446ac30db49157402fa3c5e2fea9caec
SHA1 hash:
004197b9fc86d2271ddbdb0759927c13287bbca6
Link:
https://www.unpac.me/results/f707ef9f-cffc-4c74-8f0b-d7e2d7abff15/
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/4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301

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
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.

Web download

Formbook

Executable exe 4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/190365/
  
URLhaus
https://urlhaus.abuse.ch/url/1599707/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1583603/

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