MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c299f699ca06f4eec5c21dcb915ab7c49f35ddb54362c29c6de9f5ff51ebfb2c. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
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SHA256 hash: c299f699ca06f4eec5c21dcb915ab7c49f35ddb54362c29c6de9f5ff51ebfb2c
SHA3-384 hash: e432f8a09af873aba7247ca82adec50b4043a40f4ad158fd8d28aa000ab435d67fc22bc80767006fe26e2e092dbb91fd
SHA1 hash: ab201172ace8620fe1bab346dbd12388fb839efc
MD5 hash: 5f02a42a2d95f9f217c6cd9dcf5d5f02
humanhash: twelve-jersey-rugby-twenty
File name:bankinslip.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:199'168 bytes
First seen:2022-06-09 05:29:43 UTC
Last seen:2022-06-09 20:16:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 768:iVfbeuhp6kELfs6CChd7ntnR+iEiii38n8nssGGTdjt+++Gvx/bb2exNEzAlgql8:4fbewuS9wFO1hhwo8r2PYBU4cIGr
TLSH T1D3149CF36BD8C8DEDB586234F3425E1703516DEC68D6A63C1FDE7A29C630A6960F8520
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)
File icon (PE):PE icon
dhash icon b0829c988c868070 (14 x AgentTesla, 4 x Formbook, 4 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
286
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
bankinslip.exe
Verdict:
Malicious activity
Analysis date:
2022-06-09 05:32:10 UTC
Tags:
formbook
Link:
https://app.any.run/tasks/4c057681-3ddd-488b-b0fb-6c5c4a44aedc

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/278004/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.15045.18129.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Forced system process termination
DNS request
Sending an HTTP GET request
Running batch commands
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Searching for synchronization primitives
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed wacatac
Link:
https://www.filescan.io/uploads/62a185975dc88d35716dfdff/reports/42f8abd2-c250-486f-9cb1-a84499c03f8f/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/240809c1-b73a-4aa1-afee-f7a2bc76a1f3
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1009652
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for domain / URL
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
Snort IDS alert for network traffic
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 Costura Assembly Loader
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 642148 Sample: bankinslip.exe Startdate: 09/06/2022 Architecture: WINDOWS Score: 100 100 Snort IDS alert for network traffic 2->100 102 Multi AV Scanner detection for domain / URL 2->102 104 Malicious sample detected (through community Yara rule) 2->104 106 10 other signatures 2->106 10 bankinslip.exe 16 7 2->10         started        14 Dfgjf.exe 14 4 2->14         started        process3 dnsIp4 84 mickey51.com 43.242.128.230, 49741, 49765, 49781 SONDERCLOUDLIMITED-AS-APSonderCloudLimitedHK Hong Kong 10->84 78 C:\Users\user\AppData\Roaming\...\Dfgjf.exe, PE32 10->78 dropped 80 C:\Users\user\...\Dfgjf.exe:Zone.Identifier, ASCII 10->80 dropped 82 C:\Users\user\AppData\...\bankinslip.exe.log, ASCII 10->82 dropped 17 InstallUtil.exe 10->17         started        20 cmd.exe 1 10->20         started        22 powershell.exe 15 10->22         started        116 Antivirus detection for dropped file 14->116 118 Multi AV Scanner detection for dropped file 14->118 120 Machine Learning detection for dropped file 14->120 24 InstallUtil.exe 14->24         started        26 cmd.exe 14->26         started        28 powershell.exe 14 14->28         started        file5 signatures6 process7 signatures8 90 Modifies the context of a thread in another process (thread injection) 17->90 92 Maps a DLL or memory area into another process 17->92 94 Sample uses process hollowing technique 17->94 96 Queues an APC in another process (thread injection) 17->96 30 explorer.exe 17->30 injected 32 cmd.exe 17->32         started        98 Tries to detect virtualization through RDTSC time measurements 20->98 35 conhost.exe 20->35         started        37 timeout.exe 1 20->37         started        39 conhost.exe 22->39         started        41 conhost.exe 26->41         started        43 timeout.exe 26->43         started        45 conhost.exe 28->45         started        process9 signatures10 47 Dfgjf.exe 3 30->47         started        50 explorer.exe 30->50         started        53 help.exe 30->53         started        88 Maps a DLL or memory area into another process 32->88 55 cmd.exe 32->55         started        57 conhost.exe 35->57         started        59 timeout.exe 35->59         started        process11 dnsIp12 86 mickey51.com 47->86 61 InstallUtil.exe 47->61         started        64 powershell.exe 47->64         started        66 cmd.exe 47->66         started        68 InstallUtil.exe 47->68         started        108 Tries to detect virtualization through RDTSC time measurements 50->108 70 cmd.exe 50->70         started        72 conhost.exe 55->72         started        signatures13 process14 signatures15 110 Modifies the context of a thread in another process (thread injection) 61->110 112 Maps a DLL or memory area into another process 61->112 114 Sample uses process hollowing technique 61->114 74 conhost.exe 64->74         started        76 conhost.exe 70->76         started        process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c299f699ca06f4eec5c21dcb915ab7c49f35ddb54362c29c6de9f5ff51ebfb2c/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-06-09 03:22:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
20
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ykm7ngoka32o5rocdxfzcwvxysptlxnvinrmfhdn5h276upl7mwa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
masslogger
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:fs44 persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220609-f65zqaaec7/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
c299f699ca06f4eec5c21dcb915ab7c49f35ddb54362c29c6de9f5ff51ebfb2c
MD5 hash:
5f02a42a2d95f9f217c6cd9dcf5d5f02
SHA1 hash:
ab201172ace8620fe1bab346dbd12388fb839efc
Link:
https://www.unpac.me/results/dfcf7cee-0ca9-453c-814b-62bc547fb7d5/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c299f699ca06/report/overview.html
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/c299f699ca06f4eec5c21dcb915ab7c49f35ddb54362c29c6de9f5ff51ebfb2c

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: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.

Malspam

Formbook

zip d1b6c40d76f926b653c33e43cd70856dae53ce8ddee7c53f4e25867dd768bd87

Formbook

Executable exe c299f699ca06f4eec5c21dcb915ab7c49f35ddb54362c29c6de9f5ff51ebfb2c

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/278004/
  
Dropped by
SHA256 d1b6c40d76f926b653c33e43cd70856dae53ce8ddee7c53f4e25867dd768bd87
  
Dropped by
MD5 3cf1cc7df36f4c057d66a7a9d442f6d8

Comments