MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8ecf3a66141bdd66b2ba8201bb1fedbbbde5c4e5710b99ba2e1d523ad49011a1. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments
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SHA256 hash: 8ecf3a66141bdd66b2ba8201bb1fedbbbde5c4e5710b99ba2e1d523ad49011a1
SHA3-384 hash: 5c7b9c6bc6f93015d4d9e903bc94606290856a35e82eb1caaf72ace66b99443d3bbcae7f10f0efe581043ecc6d375ce5
SHA1 hash: 00fac6353533794c5f4ef8ea08082974241f4841
MD5 hash: 36ea1b51442def28b8c127f7d9e386a5
humanhash: oven-lima-cardinal-pip
File name:btweb_installer.exe.vir
Download: download sample
Signature Formbook
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File size:525'312 bytes
First seen:2022-06-20 17:13:03 UTC
Last seen:2022-06-21 01:58:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:rc2iNjLSQuLp3IJMgdkewzeaV07rfmqS8KP1N:Y1dLSQut3I1md3V03ur1N
TLSH T10CB401007A7847B5ED39C7FC48A2614053FC6037A15AF3A94FD971DBA867B068B50B2B
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter KdssSupport
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
276
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
http://103.114.104.219/nz234567hgfdertyuhsec/btweb_installer.exe
Verdict:
Malicious activity
Analysis date:
2022-06-20 13:20:45 UTC
Tags:
opendir loader formbook trojan stealer
Link:
https://app.any.run/tasks/03208ed4-bc27-4fb7-b93f-79000e6358f2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/281689/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
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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
Searching for synchronization primitives
Launching cmd.exe command interpreter
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62b0aadff4dd1ffb77a4d0b5/reports/f1b1e97c-a713-4fe2-9a56-2f2af102fabf/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cec1f4ca-f5b2-4045-b33d-9df268d5eeda
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1016544
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
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 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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 649039 Sample: btweb_installer.exe.vir Startdate: 20/06/2022 Architecture: WINDOWS Score: 100 33 www.fa1028.xyz 2->33 35 www.cloudinfra-demo1.net 2->35 37 sbtsyzc285nujlz.236164aojakjhbk.com 2->37 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for URL or domain 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 5 other signatures 2->51 10 btweb_installer.exe.exe 3 2->10         started        signatures3 process4 file5 31 C:\Users\user\...\btweb_installer.exe.exe.log, ASCII 10->31 dropped 63 Tries to detect virtualization through RDTSC time measurements 10->63 65 Injects a PE file into a foreign processes 10->65 14 btweb_installer.exe.exe 10->14         started        17 conhost.exe 10->17         started        19 btweb_installer.exe.exe 10->19         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 14->67 69 Maps a DLL or memory area into another process 14->69 71 Sample uses process hollowing technique 14->71 73 Queues an APC in another process (thread injection) 14->73 21 control.exe 14->21         started        24 explorer.exe 14->24 injected process9 dnsIp10 53 Modifies the context of a thread in another process (thread injection) 21->53 55 Maps a DLL or memory area into another process 21->55 57 Tries to detect virtualization through RDTSC time measurements 21->57 27 cmd.exe 1 21->27         started        39 www.jsq2.com 154.222.66.7, 49810, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 24->39 41 sbtsyzc285nujlz.236164aojakjhbk.com 216.118.235.107, 80 NETSEC-HKNETSECHK Hong Kong 24->41 43 3 other IPs or domains 24->43 59 System process connects to network (likely due to code injection or exploit) 24->59 61 Performs DNS queries to domains with low reputation 24->61 signatures11 process12 process13 29 conhost.exe 27->29         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/8ecf3a66141bdd66b2ba8201bb1fedbbbde5c4e5710b99ba2e1d523ad49011a1/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-06-20 11:38:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r3htuzqudpownmv2qia3wh7nxo66lrhfoefztorodvjdvveqcgqq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:b6qc loader persistence rat spyware stealer suricata
Link:
https://tria.ge/reports/220620-vryz7aabc3/
Behaviour
Modifies Internet Explorer settings
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
Reads user/profile data of web browsers
Deletes itself
Adds policy Run key to start application
Blocklisted process makes network request
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
b6d0cb02eb83a2d9962b0ba51cd6a2708f77442e4341e162e15c2ff8b4fa5c2a
MD5 hash:
5f77be289fe4de9abdd118e5c471b6bc
SHA1 hash:
a7ddbb3a6dde6df64698a96f4bdcbee20ca1e9b9
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/358f262a-c276-4705-827e-c9462b691c25/
Parent samples :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 hash:
6de8bc7d4844efdb55328126b632a374bee9aaf3073cf9ca5fe5fdf303106f8e
MD5 hash:
7ce2d10bd0f02667bc0e1343d9ffc1c1
SHA1 hash:
c3a5b4e5721085022eb7bf0008b7e449f9369fcf
Link:
https://www.unpac.me/results/358f262a-c276-4705-827e-c9462b691c25/
SH256 hash:
835c8cae2d981c6b0ef65ad1b6f6daf518cbe47ce4f245333d260badcdef9f2b
MD5 hash:
333401cdde299a3b9ec300d51c1f6fbc
SHA1 hash:
87a5d7ae0f3e549ee5b002790cccb1db6bc8dbea
Link:
https://www.unpac.me/results/358f262a-c276-4705-827e-c9462b691c25/
SH256 hash:
d1e796ed3f4b3bd6814cee77baa4fb4007d9e1563a6ff69ee94a4a9520ffd1b3
MD5 hash:
ea8d70a2da9748d99bcf08506921f75e
SHA1 hash:
6917291b1fbf8b2c2ddb7750cb4cb0e1c63ee27c
Link:
https://www.unpac.me/results/358f262a-c276-4705-827e-c9462b691c25/
SH256 hash:
8ecf3a66141bdd66b2ba8201bb1fedbbbde5c4e5710b99ba2e1d523ad49011a1
MD5 hash:
36ea1b51442def28b8c127f7d9e386a5
SHA1 hash:
00fac6353533794c5f4ef8ea08082974241f4841
Link:
https://www.unpac.me/results/358f262a-c276-4705-827e-c9462b691c25/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8ecf3a66141b/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/8ecf3a66141bdd66b2ba8201bb1fedbbbde5c4e5710b99ba2e1d523ad49011a1

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:exploit_any_poppopret
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Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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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 8ecf3a66141bdd66b2ba8201bb1fedbbbde5c4e5710b99ba2e1d523ad49011a1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2239049/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/281689/

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