MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c42d70369ed48cbb67bf7b5dc2c673d0ca83d3cae4542938fbc7dca3f132bc49. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c42d70369ed48cbb67bf7b5dc2c673d0ca83d3cae4542938fbc7dca3f132bc49
SHA3-384 hash: 237f6f516b3ee1bd11e5b5f3a374789ac9d8d17d3310d153bc3a1a72949dc75b7172e81270e4572a102662e6aa7821d8
SHA1 hash: 5956cc7268b58efcb4cef4677ef699593fd27766
MD5 hash: 043f96cd726a247f428241733271393e
humanhash: spring-happy-washington-lake
File name:Dekont.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:278'311 bytes
First seen:2022-10-28 10:29:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 29b61e5a552b3a9bc00953de1c93be41 (174 x Formbook, 82 x AgentTesla, 81 x Loki)
ssdeep 6144:qweEpGB5xMDZ4ONpX7yIPaOBcwnEpENvMfm0KN6HAdF8FITSerwh80J2:bGBbMDnpX2A1iwnmExMHHAF8Srwh8T
TLSH T1A544232322E0D8F7F2C64B739D3AB6F99337534541126597CB684F8F36A06C7864B292
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
295
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Dekont.pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-10-28 10:30:05 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/91e91c05-3f39-4fd0-9f93-ef5bef2ba850

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/325499/
Detection(s):
SecuriteInfo.com.Win32.InjectorX-gen.10673.5597.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/46331/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
nemesis overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/635baf2cce1f43143c29d831/reports/d513379c-cae0-4700-bcd7-b1a8344023f1/overview
Result
Verdict:
MALICIOUS
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/a9d4b1fe-954e-42b7-852a-e2615bc240da
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1100315
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses an obfuscated file name to hide its real file extension (double extension)
Uses netstat to query active network connections and open ports
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 732976 Sample: Dekont.pdf.exe Startdate: 28/10/2022 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Antivirus detection for URL or domain 2->51 53 7 other signatures 2->53 11 Dekont.pdf.exe 18 2->11         started        process3 file4 31 C:\Users\user\AppData\Local\Temp\nwqllu.exe, PE32 11->31 dropped 14 nwqllu.exe 11->14         started        process5 signatures6 65 Machine Learning detection for dropped file 14->65 67 Maps a DLL or memory area into another process 14->67 69 Tries to detect virtualization through RDTSC time measurements 14->69 17 nwqllu.exe 14->17         started        process7 signatures8 39 Modifies the context of a thread in another process (thread injection) 17->39 41 Maps a DLL or memory area into another process 17->41 43 Sample uses process hollowing technique 17->43 45 Queues an APC in another process (thread injection) 17->45 20 explorer.exe 17->20 injected process9 dnsIp10 33 hechoenapure.com 66.165.235.194, 49704, 80 HVC-ASUS United States 20->33 35 www.hechoenapure.com 20->35 37 2 other IPs or domains 20->37 55 System process connects to network (likely due to code injection or exploit) 20->55 57 Uses netstat to query active network connections and open ports 20->57 24 NETSTAT.EXE 20->24         started        signatures11 process12 signatures13 59 Modifies the context of a thread in another process (thread injection) 24->59 61 Maps a DLL or memory area into another process 24->61 63 Tries to detect virtualization through RDTSC time measurements 24->63 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c42d70369ed48cbb67bf7b5dc2c673d0ca83d3cae4542938fbc7dca3f132bc49/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-10-28 12:49:22 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yqwxanu62sglwz57pno4frtt2dfihu6k4rkcsoh3y7okh4jsxreq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:mr06 rat spyware stealer trojan
Link:
https://tria.ge/reports/221028-mjtfqsfcg2/
Behaviour
Gathers network information
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
Loads dropped DLL
Executes dropped EXE
Formbook payload
Formbook
Gathering data
Unpacked files
SH256 hash:
ed1e2e2f1cb6f0c8f9337571bfcc82db71ccc19ed4000f91fd41ccfa77f3d3da
MD5 hash:
d23cc85959b5cfe1992171da34ea4b02
SHA1 hash:
60bee44c1630f5d2b8ab56179b9163fb839a74a1
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/15ec1dc2-0c41-4f30-8d67-e27284a99f78/
Parent samples :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 hash:
013289b53957a9b11c1123a295cc1cb944b14b05982824130291ca052d58373b
MD5 hash:
c1a2b89a561a06269bc03c3f730d1ded
SHA1 hash:
1ebe17a1378f798d7b2b79a39e435a73e6330c5d
Link:
https://www.unpac.me/results/15ec1dc2-0c41-4f30-8d67-e27284a99f78/
SH256 hash:
c42d70369ed48cbb67bf7b5dc2c673d0ca83d3cae4542938fbc7dca3f132bc49
MD5 hash:
043f96cd726a247f428241733271393e
SHA1 hash:
5956cc7268b58efcb4cef4677ef699593fd27766
Link:
https://www.unpac.me/results/15ec1dc2-0c41-4f30-8d67-e27284a99f78/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c42d70369ed48cbb67bf7b5dc2c673d0ca83d3cae4542938fbc7dca3f132bc49

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe c42d70369ed48cbb67bf7b5dc2c673d0ca83d3cae4542938fbc7dca3f132bc49

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/325499/

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