MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 207dff33f6f91f114deae60a6cb3a404a5f40bc607fb6015f680c8980af7ac16. 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: 14


Intelligence 14 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 207dff33f6f91f114deae60a6cb3a404a5f40bc607fb6015f680c8980af7ac16
SHA3-384 hash: 4b61a35064a638bbe476824cbc20e42f2a7199bcb7a2d46b5909dba048688a5ef46debf4ca07fa928c9901aaef1d40e7
SHA1 hash: 662056878a2b1fb1e99d1f74bb0e8694904fdccd
MD5 hash: 3ade5b9b508051cc39c1c610f4af5a12
humanhash: mockingbird-don-beryllium-idaho
File name:Unpaid invoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:561'664 bytes
First seen:2021-09-15 06:51:59 UTC
Last seen:2021-09-15 13:42:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:1WHCM2K4CUtghbx16Fw1m8hS9k6nea987mt:f3CUtKT5tQ9hmE
Threatray 9'388 similar samples on MalwareBazaar
TLSH T106C47B243BAB5019F072AA757AD7EDF1E91ABF622E02945B10C13F473623AC1DEC152D
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
238
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Unpaid invoice.exe
Verdict:
Malicious activity
Analysis date:
2021-09-15 06:55:31 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/b1a4273a-c015-4b6e-83bd-b02479b46cf9

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/187982/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.7424.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/617514afdb358dd15ed9240c/reports/2f1f492d-9555-4a3f-8559-cf2d79afabd8/overview
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/10b4e5c4-13d0-4696-8e91-dfc4f7e326de
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/851124
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Antivirus detection for URL or domain
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 dropped file
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 dropped file
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: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 483566 Sample: Unpaid invoice.exe Startdate: 15/09/2021 Architecture: WINDOWS Score: 100 39 www.sportrecoverysleeve.com 2->39 41 sportrecoverysleeve.com 2->41 43 www.chacrit.com 2->43 51 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->51 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 16 other signatures 2->57 10 Unpaid invoice.exe 7 2->10         started        signatures3 process4 file5 31 C:\Users\user\AppData\Roaming31BYchW.exe, PE32 10->31 dropped 33 C:\Users\user\...33BYchW.exe:Zone.Identifier, ASCII 10->33 dropped 35 C:\Users\user\AppData\Local\...\tmpC99D.tmp, XML 10->35 dropped 37 C:\Users\user\...\Unpaid invoice.exe.log, ASCII 10->37 dropped 69 Injects a PE file into a foreign processes 10->69 14 Unpaid invoice.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures6 process7 signatures8 71 Modifies the context of a thread in another process (thread injection) 14->71 73 Maps a DLL or memory area into another process 14->73 75 Sample uses process hollowing technique 14->75 77 Queues an APC in another process (thread injection) 14->77 19 svchost.exe 14->19         started        22 explorer.exe 14->22 injected 25 conhost.exe 17->25         started        process9 dnsIp10 59 Self deletion via cmd delete 19->59 61 Modifies the context of a thread in another process (thread injection) 19->61 63 Maps a DLL or memory area into another process 19->63 65 Tries to detect virtualization through RDTSC time measurements 19->65 27 cmd.exe 1 19->27         started        45 www.gushixiu.com 154.207.58.141, 49782, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 22->45 47 www.allfyllofficial.com 50.87.144.47, 49781, 80 UNIFIEDLAYER-AS-1US United States 22->47 49 4 other IPs or domains 22->49 67 System process connects to network (likely due to code injection or exploit) 22->67 signatures11 process12 process13 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/207dff33f6f91f114deae60a6cb3a404a5f40bc607fb6015f680c8980af7ac16/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-09-15 03:53:53 UTC
AV detection:
10 of 45 (22.22%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=eb676m7w7eprctpk4yfgzm5eass7ic6ga75wafpwqdejqcxxvqla._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
10cff7483cb76b2f8552b3cbe54cc2adf695ab7e638795560ac5c0179c7c52f4
Formbook
13c26434028c07333f16b4ca9740f7d1c2234d81f3ed8f8f23d1c5019141479e
Formbook
1829af596150521350d812c07f81226755d397e4755f649e083cc06de7d6f402
Formbook
2cacbf5edb0feaee79523ed3d17bd8ad53528244142244ca40626626baaec46b
Formbook
3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07
Formbook
41e1e39ddc4c57a2f85a475d30a43c6ca33346399d9fbd5548c78e4b8c732e14
Formbook
489e0e46a5df58a3144cd7a3ecb1fd0e29aa2db5060084ec774f1d2c8c763fd9
Formbook
77f75ced9cfdb9bff40e705aaced15795f123e460db0fcb97463e0515aaf8af1
Formbook
8700797586a744fd3e998733ed63ab6f721bacd87c6796ea7f5c1a8f2c17a3f4
Formbook
a5fb671ff149d2c1c97fcd000703037ca35298d3d45d4797ab20a190aea0ff10
Formbook
+ 9'378 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:b6cu loader rat
Link:
https://tria.ge/reports/210915-hm4cwsaac2/
Behaviour
Creates scheduled task(s)
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.allfyllofficial.com/b6cu/
Unpacked files
SH256 hash:
9f0504e928d32b48eebf9c0ff72e61751fa16482f490bba59e4e4c8eda864f3e
MD5 hash:
6a7d943c3990612f8b47f7ecc9f48cf7
SHA1 hash:
de4705788da371a53409575bc59452e2a68f647a
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/c4750712-4bbb-4ad5-959f-b9b91dac03ac/
Parent samples :
2cacbf5edb0feaee79523ed3d17bd8ad53528244142244ca40626626baaec46b
3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07
a5fb671ff149d2c1c97fcd000703037ca35298d3d45d4797ab20a190aea0ff10
1829af596150521350d812c07f81226755d397e4755f649e083cc06de7d6f402
207dff33f6f91f114deae60a6cb3a404a5f40bc607fb6015f680c8980af7ac16
SH256 hash:
ad4a7895d529d5164302bb88596964ab42ff125bf0f5544418c80b6d438cb587
MD5 hash:
43ababb6b0a02907aad43084f12b10d9
SHA1 hash:
b60ba705891d5a666d64300181b475a46714ffa8
Link:
https://www.unpac.me/results/c4750712-4bbb-4ad5-959f-b9b91dac03ac/
SH256 hash:
55c3794f65003add03fdd20e1f82b95de819293648ed74689cfcf252914b0a7c
MD5 hash:
eb6405f399dfb60479b065a0b5a72721
SHA1 hash:
3305879ce9928b7b5a6de1171164be782eb5c5f0
Link:
https://www.unpac.me/results/c4750712-4bbb-4ad5-959f-b9b91dac03ac/
SH256 hash:
207dff33f6f91f114deae60a6cb3a404a5f40bc607fb6015f680c8980af7ac16
MD5 hash:
3ade5b9b508051cc39c1c610f4af5a12
SHA1 hash:
662056878a2b1fb1e99d1f74bb0e8694904fdccd
Link:
https://www.unpac.me/results/c4750712-4bbb-4ad5-959f-b9b91dac03ac/
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/207dff33f6f91f114deae60a6cb3a404a5f40bc607fb6015f680c8980af7ac16

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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
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 207dff33f6f91f114deae60a6cb3a404a5f40bc607fb6015f680c8980af7ac16

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/187982/

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