MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4fffaa823919f3c93679be8229d15e68e20cf5143abb689d928929b4e784eb16. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4fffaa823919f3c93679be8229d15e68e20cf5143abb689d928929b4e784eb16
SHA3-384 hash: 51ee8278a9f9866f1281690e7810ef5446ed2fdddd1359d9bb82d58f759f47689c64ee1aa3655a5b6d7f7dcee96bfa9d
SHA1 hash: 4b559016620050382f8df76466bfe681023cc1eb
MD5 hash: 4a7d5631f7b36d72ec52148cfc299f33
humanhash: mango-rugby-lithium-blue
File name:4a7d5631f7b36d72ec52148cfc299f33.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:414'208 bytes
First seen:2021-10-06 09:25:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:g+hn3Q+3HwOKgdaRvIyrppNbU6RL1Ca8igEShcT/HkcDwNjrxj5mkaII3Ss9WejK:tngobd8IMFrpsifSWDEcD6J6ikzjrRU
Threatray 9'901 similar samples on MalwareBazaar
TLSH T10D94F16DA3234254CC2B87F0284497A38778AC67516AD7384F9E60FE7F673B84EC0956
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
235
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4a7d5631f7b36d72ec52148cfc299f33.exe
Verdict:
Suspicious activity
Analysis date:
2021-10-06 09:40:47 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/aa7cb999-fd1e-4b3b-b48f-f5ec021a4928

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/195406/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.935-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/615d6bb498a6280f3932d28e/reports/6851574c-4612-4936-af53-78e3ead23916/overview
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/964d342f-d8f5-4fa0-a264-419300661b7c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/865441
Signature
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: 497867 Sample: OgafwBF6eV.exe Startdate: 06/10/2021 Architecture: WINDOWS Score: 100 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 6 other signatures 2->42 10 OgafwBF6eV.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\OgafwBF6eV.exe.log, ASCII 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 OgafwBF6eV.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 shops.myshopify.com 23.227.38.74, 49818, 80 CLOUDFLARENETUS Canada 17->30 32 www.flowfinancialplanning.com 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 wlanext.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:
n/a
Link:
https://mwdb.cert.pl/sample/4fffaa823919f3c93679be8229d15e68e20cf5143abb689d928929b4e784eb16/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-10-06 09:26:10 UTC
AV detection:
18 of 45 (40.00%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0ab5b36920783c2ba772f2a06ef832e22c07a551043dbae2c33cfcf27b1b238e
Formbook
2b1a98add215568bb5e1c333321cf0ffe98d9128fa149c4f5a07ce2922750b3e
Formbook
2f086810181af89d5d29a30f5eafcc60efdd2dd3f68292dd3acff64fc92a547a
Formbook
3c75184f86f6231ed38be583a300e5af220f5d68654ea1fd56c833f333d0a589
Formbook
434837e7ca89c0c7a55c3b1611dbc172440b8808e938e3a192f65405dd9cafa3
Formbook
584b5b4a74cb945f3be3ff0a4017d8ce2b073d6a98bfceb7bc59cb0f3fe7c3ee
Formbook
d80d29653891c1d84ba6b72e1eaafefd78700646859bcaa7ded2fc1e2fbafce4
Formbook
ef36fa059ef0b120143e87b78864c2d6774c399df68850311d44cf1f0facb81c
Formbook
f85b0ebf72b1230d8582028ef03f438d04996f2d227f5d3f3af40694a56a724e
Formbook
+ 9'891 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:cmsr rat spyware stealer trojan
Link:
https://tria.ge/reports/211006-ld769sbbfk/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.odysseysailingsantorini.com/cmsr/
Unpacked files
SH256 hash:
f4338b7dad13fe19b62529f730dc2926e9bdbc9e38038dc81d628f4ded20f337
MD5 hash:
055c215128c3f6235871b87e858d19b5
SHA1 hash:
7d9669b69d4fac511e9304df2a0e9b27cb92f887
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/8ddcb6e1-161a-48b1-8b45-49816346789f/
Parent samples :
584b5b4a74cb945f3be3ff0a4017d8ce2b073d6a98bfceb7bc59cb0f3fe7c3ee
0ab5b36920783c2ba772f2a06ef832e22c07a551043dbae2c33cfcf27b1b238e
4fffaa823919f3c93679be8229d15e68e20cf5143abb689d928929b4e784eb16
SH256 hash:
ce37e74b000db42f77deb28a01c11ee9886a34d236d6e1d7f6cbc841deb6ab49
MD5 hash:
3445cde128eef2cc55b673dfb02a179a
SHA1 hash:
790653f16d6a78ed32bd62f4068d06faf56ab1c4
Link:
https://www.unpac.me/results/8ddcb6e1-161a-48b1-8b45-49816346789f/
SH256 hash:
fe8637d821a39a8b74abce7e043007d38cb9c5cfcb7098af9846cfd98185ac03
MD5 hash:
c380b6831f456ac5cac08c78c0e4dada
SHA1 hash:
3e241a0b9d96c1dfbadd7ee1a8c5ee6d74eba11c
Link:
https://www.unpac.me/results/8ddcb6e1-161a-48b1-8b45-49816346789f/
SH256 hash:
4fffaa823919f3c93679be8229d15e68e20cf5143abb689d928929b4e784eb16
MD5 hash:
4a7d5631f7b36d72ec52148cfc299f33
SHA1 hash:
4b559016620050382f8df76466bfe681023cc1eb
Link:
https://www.unpac.me/results/8ddcb6e1-161a-48b1-8b45-49816346789f/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4fffaa823919f3c93679be8229d15e68e20cf5143abb689d928929b4e784eb16

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 4fffaa823919f3c93679be8229d15e68e20cf5143abb689d928929b4e784eb16

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1655379/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/195406/

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