MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 47a44b509ebc93c5b3820bac745ffe7271a77a986f3c937baf9dae7a2b0e6a79. 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 6 File information Comments
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SHA256 hash: 47a44b509ebc93c5b3820bac745ffe7271a77a986f3c937baf9dae7a2b0e6a79
SHA3-384 hash: 9894d48f09a012dcb538d119074caf83bc9fbf6999a99da130df14a0d8df840727d023a81ba0be2753d50285e4fe8dbe
SHA1 hash: d55a93c0a1c050d69440832f725558bc28ba8870
MD5 hash: a12382fc9037f00da26b5a88c3348b3f
humanhash: mirror-delaware-mobile-spaghetti
File name:juYENhN2uxn1dCs.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:533'504 bytes
First seen:2022-06-28 11:27:20 UTC
Last seen:2022-06-28 13:11:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:Azfa2iN/2iNVVw8BtFISyAdm8hSwDbks5CpToYHU8jOEvOyJGckPRxliW1:Afa1J16ytFfc3w0OIvrO6OKkPRrh
TLSH T1C8B4129C63E40B29FAFF03F814AC620507B9741EA6E4D11F7DE113EFE9907A04661A67
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
229
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/283922/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed wacatac
Link:
https://www.filescan.io/uploads/62bae60403fa367ea584a93f/reports/6ff13353-97ee-4adb-8934-3f1c85c58d98/overview
Result
Verdict:
UNKNOWN
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/1f3baf23-f4b3-460a-826a-d36ea0d30b14
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1021144
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in 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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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 ipconfig to lookup or modify the Windows network settings
Yara detected AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 653639 Sample: juYENhN2uxn1dCs.exe Startdate: 28/06/2022 Architecture: WINDOWS Score: 100 31 www.rickster.tech 2->31 33 www.middle-school.xyz 2->33 35 rickster.tech 2->35 41 Multi AV Scanner detection for domain / URL 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus detection for URL or domain 2->45 47 9 other signatures 2->47 11 juYENhN2uxn1dCs.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\juYENhN2uxn1dCs.exe.log, ASCII 11->29 dropped 61 Tries to detect virtualization through RDTSC time measurements 11->61 63 Injects a PE file into a foreign processes 11->63 15 juYENhN2uxn1dCs.exe 11->15         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 Queues an APC in another process (thread injection) 15->71 18 explorer.exe 15->18 injected process9 dnsIp10 37 www.biolcatiroomandrestaurant.com 209.99.40.222, 49760, 80 CONFLUENCE-NETWORK-INCVG United States 18->37 39 www.middle-school.xyz 44.227.76.166, 80 AMAZON-02US United States 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 51 Performs DNS queries to domains with low reputation 18->51 53 Uses ipconfig to lookup or modify the Windows network settings 18->53 22 ipconfig.exe 18->22         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/47a44b509ebc93c5b3820bac745ffe7271a77a986f3c937baf9dae7a2b0e6a79/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-28 04:34:35 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=i6sewue6xsj4lm4cbowhix76ojy2o6uyn46jg65ptwxhukyonj4q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:g3ws loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220628-nkzvksahf8/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
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
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Deletes itself
Reads user/profile data of web browsers
Adds policy Run key to start application
Executes dropped EXE
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
38b4296828a6f2f91717d2567e356c03d7aae314bf298c64b9ec72aae7a3ccbb
MD5 hash:
986d70ac4683c8ef5cee6f689caed9f3
SHA1 hash:
253f9edf646f2704ff1f42b83ae7d5dcbce80029
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
XLoader
Create hunting rule
Link:
https://www.unpac.me/results/b20486e2-0eb7-449a-bca8-9ec2d4bee55a/
Parent samples :
89c3fdd1450aafeff3bd6b899110bae95ecd733bca81e41b8cfc4e3d236ae27a
54959487d80d695894f408175af28cef3993a495f67c9e5ad98d30a355110cfe
47a44b509ebc93c5b3820bac745ffe7271a77a986f3c937baf9dae7a2b0e6a79
SH256 hash:
6621f3deca4497783c8e3023471cb69a0ce0364464f25c7e00a4e55d3df4ee1d
MD5 hash:
bcb75c9e2a0e0c6bf4f5c191037af238
SHA1 hash:
d632ab5531427e62e7412a46d7efae801e12282a
Link:
https://www.unpac.me/results/b20486e2-0eb7-449a-bca8-9ec2d4bee55a/
SH256 hash:
0cb6aef1fa57d11408e47ae071485ef8f48c2982997b8d74b47a4151d85b978c
MD5 hash:
843aa6edf83bff7b61c6a5369ef41e95
SHA1 hash:
d1bfeec8eaac9a1dacf2f7062ce964d8e7d77085
Link:
https://www.unpac.me/results/b20486e2-0eb7-449a-bca8-9ec2d4bee55a/
SH256 hash:
e792afd5beac3abb1694f063bdde124155f8f91245acdc3c2a1a6123f170cf4d
MD5 hash:
422e3a296aa117714d9696ba037c10c3
SHA1 hash:
cfa3adfff0cfbb4d4945b66458c92802c81b0199
Link:
https://www.unpac.me/results/b20486e2-0eb7-449a-bca8-9ec2d4bee55a/
SH256 hash:
8535a07363a8cccfa0d325fcf31bc03554713821860071b91a5f32d8eb1dff92
MD5 hash:
c17dd69abc048949c1db2d7d2c124d23
SHA1 hash:
a32d12c96bcd64b84e2dd92882797f129ec5431d
Link:
https://www.unpac.me/results/b20486e2-0eb7-449a-bca8-9ec2d4bee55a/
SH256 hash:
47a44b509ebc93c5b3820bac745ffe7271a77a986f3c937baf9dae7a2b0e6a79
MD5 hash:
a12382fc9037f00da26b5a88c3348b3f
SHA1 hash:
d55a93c0a1c050d69440832f725558bc28ba8870
Link:
https://www.unpac.me/results/b20486e2-0eb7-449a-bca8-9ec2d4bee55a/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/47a44b509ebc/report/overview.html
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/47a44b509ebc93c5b3820bac745ffe7271a77a986f3c937baf9dae7a2b0e6a79

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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 47a44b509ebc93c5b3820bac745ffe7271a77a986f3c937baf9dae7a2b0e6a79

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/283922/

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