MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 364382b6fb6aebc6c7faca44b8a97451012467639f12962715a9e178d9099e18. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 364382b6fb6aebc6c7faca44b8a97451012467639f12962715a9e178d9099e18
SHA3-384 hash: 9efd010463df130756d6bf071430ab15ce182a26a6c4637002956818aa7e6874545c64429044e58f6ce30a2844532f21
SHA1 hash: bdb272c33e2f621e7a35bb780b61017258f7fcde
MD5 hash: 80f7403a54d442b98c9c0346a01ab793
humanhash: yellow-may-butter-kitten
File name:purchase.pdf
Download: download sample
Signature Formbook
Create hunting rule
File size:419'840 bytes
First seen:2020-10-06 06:02:48 UTC
Last seen:2020-10-06 07:23:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:9Kf+0/hitjkl6VgBuJ/PWOvJAtR2+tbXS1b43cmuQsoqwP0N7LKoUn:02glEu66toEbxnqwP05KoUn
Threatray 155 similar samples on MalwareBazaar
TLSH 67949E7D35935B5DC93A063586608CC2B67902C63F918A0E71AFF31C1E9728BA76335E
Reporter abuse_ch
Tags:FormBook pdf


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: fujitec.co
Sending IP: 209.11.159.147
From: mohan.j@fujitecindia.com
Subject: BUSINESS ENQUIRY AND NEW ORDER
Attachment: Enquiry2.zip (contains "purchase.pdf")

Intelligence

File Origin
# of uploads :
2
# of downloads :
178
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/68431/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Sending a UDP request
Creating a file
Creating a process from a recently created file
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/482352
Signature
.NET source code contains very large array initializations
Initial sample is a PE file and has a suspicious name
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
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/364382b6fb6aebc6c7faca44b8a97451012467639f12962715a9e178d9099e18/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-10-06 02:21:49 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gzbyfnx3nlv4nr72zjclrklukeasiz3dt4jjmjyvvhqxrwijtyma._file
Verdict:
unknown
Similar samples:
4a60edca3a6f3900a39b164d5894137e4e466bae90a5287ccd9eebb4482b2686
Formbook
6a25765e7d969b6c324cc461b08d947d49204191d97f620b4a74ba0f6dc744ca
Formbook
93129fbf583ce2e637e0a21c490a549e1597902179636ebc13a7c937b5707782
Formbook
9feae92d12fa03fc35f79af2670703aa18a2dcb39d65c6415f81239eb5af011c
Formbook
b0055c111a78ee76cb6946a1e9a22f96b1b0533537865d055f465b03ac1aa7df
Formbook
b796ebc23a355b8fbd29552b2ff7142f09617c25a30a33d5a92626f69e337d48
Formbook
c2981a728305c1d0acf84d81922860e2d864409d8602b499258b4e51e9e04c4b
Formbook
c62ef08103c30d5d2d18fbc2eff820985af40aa377828ef72c3ecad495103511
Formbook
ca86c76c753d3c8812228b08c1459bdee50a40b0aa36460906e452f80258c1b7
Formbook
e3dbbb858177e3f3bae3fd5501eb0c8d4109ed87b534dc97e50a2142f616201a
Formbook
+ 145 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201006-rz6fdjd5nj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.xwele.com/u2n/
Unpacked files
SH256 hash:
364382b6fb6aebc6c7faca44b8a97451012467639f12962715a9e178d9099e18
MD5 hash:
80f7403a54d442b98c9c0346a01ab793
SHA1 hash:
bdb272c33e2f621e7a35bb780b61017258f7fcde
Link:
https://www.unpac.me/results/f045561c-1940-40c6-b0f4-33b09afc430b/
SH256 hash:
b80155dbd80f8bc5d3f59e08df47aefa42e73612aac6e8845fad3cae516cbdb0
MD5 hash:
0478256ba4237f2e33b77f8127d9a145
SHA1 hash:
560f2cd098bd81c18174d980652b28a8c90c48e2
Link:
https://www.unpac.me/results/f045561c-1940-40c6-b0f4-33b09afc430b/
SH256 hash:
6588cb59743ca04e6fb14256ed375908c9a74840b37df3eaa4d9e520f747e430
MD5 hash:
36bf02bda20d358a18f7ac65b7d7ac6c
SHA1 hash:
a08c8bb774773bd957adaf80ee544e53cc43679d
Link:
https://www.unpac.me/results/f045561c-1940-40c6-b0f4-33b09afc430b/
SH256 hash:
19d9922060be89a70b76e5c0056e751f1baa5d41819235c92cf4f5d7668e1267
MD5 hash:
811864a0b06c529af894a7fec6ddbf47
SHA1 hash:
d35b82933eb06a6ec60e8cbbdb65eb6cdcaeb6d2
Link:
https://www.unpac.me/results/f045561c-1940-40c6-b0f4-33b09afc430b/
Parent samples :
afa2f55e149097f9b250142bbfd94d9d56d10649c96adb079fdb0dfdac7c6660
69e2ae11e1b5cbe120bf02301191a1cf05e87fc09b09d63bd782abbf3615d05d
0b778873c94f6bc89a40294c0e85a38ab82509260cd2a2e8b73d00c5c90e8757
7ddfa6f44a60f4b894321f6977f8121cfb371c3c61ac872c58ba61fd5ee13deb
SH256 hash:
d686716792458e89e7bdb7d5241f6494bba276b0f37fea70d55267c54be4f290
MD5 hash:
b2cac5653878a63ccf84cfc34c329b47
SHA1 hash:
415d6b9036cf71cec7ef0c121608a30acc530510
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/f045561c-1940-40c6-b0f4-33b09afc430b/
Parent samples :
364382b6fb6aebc6c7faca44b8a97451012467639f12962715a9e178d9099e18
9783369e20b9e4898081c57bd2f58204f7675d826a9eb5e9d83e1eefc14d48ae
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
NJRat
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/364382b6fb6aebc6c7faca44b8a97451012467639f12962715a9e178d9099e18

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:Formbook
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:autogenerated rule brought to you by yara-signator

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

zip 83d7aee71c61246fcdbf53fce8d998840c4fe4116a7aef8b91ece53e1aa6437b

Formbook

Executable exe 364382b6fb6aebc6c7faca44b8a97451012467639f12962715a9e178d9099e18

(this sample)

  
Dropped by
MD5 041dbbcb85cc2b43273756ec943e36d7
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/68431/
  
Dropped by
SHA256 83d7aee71c61246fcdbf53fce8d998840c4fe4116a7aef8b91ece53e1aa6437b

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