MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6665e9becfbcd071f9d5f1e8635dba4801a354dfb0bee53f4efafecb6146bba6. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6665e9becfbcd071f9d5f1e8635dba4801a354dfb0bee53f4efafecb6146bba6
SHA3-384 hash: 0ec587ebeb5bfb03c0ce775034e82d54c41de84de699d65684f17c66803e7b5865ffbcda9089eec9a55f2fbc812e8aa4
SHA1 hash: f1a3f5a04c969d465f8f96235a76838c1d783a5d
MD5 hash: 2137e7178040f8ffa1decc904bacde30
humanhash: massachusetts-wolfram-yellow-robin
File name:proforma corregida.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:274'932 bytes
First seen:2022-11-21 16:27:25 UTC
Last seen:2022-11-21 18:37:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 29b61e5a552b3a9bc00953de1c93be41 (174 x Formbook, 82 x AgentTesla, 81 x Loki)
ssdeep 6144:MEa0NItHwU2Z2FmI1bRK49dMxTG1QBLxk6kgsm87W1mbEz:XzZ2FB1dKcOxxBdJkgsmV17
TLSH T1584412A336C04EE7DC565A3255A37B2DC37A4A9426FA8743CB351E350275383EA1D3E4
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.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 :
2
# of downloads :
266
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
proforma corregida.exe
Verdict:
Malicious activity
Analysis date:
2022-11-21 16:30:06 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/7f55a256-8933-4c52-a1b1-59f2ca6187f3

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/336869/
Detection(s):
SecuriteInfo.com.FileRepMalware.5775.3839.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Sending a custom TCP request
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
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
lokibot nemesis overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/637ba712883647d07fb65f02/reports/ecade0d6-d481-4e9b-8883-b6d140c60cd6/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/2c67608a-828c-4167-ba0e-777eb20f51bc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1118299
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 751012 Sample: proforma corregida.exe Startdate: 21/11/2022 Architecture: WINDOWS Score: 100 34 www.cntvc.net 2->34 50 Snort IDS alert for network traffic 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 Antivirus detection for URL or domain 2->54 56 5 other signatures 2->56 12 proforma corregida.exe 18 2->12         started        signatures3 process4 file5 32 C:\Users\user\AppData\Local\Temp\tbxbna.exe, PE32 12->32 dropped 15 tbxbna.exe 12->15         started        process6 signatures7 66 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 15->66 68 Maps a DLL or memory area into another process 15->68 70 Tries to detect virtualization through RDTSC time measurements 15->70 18 tbxbna.exe 15->18         started        process8 signatures9 42 Modifies the context of a thread in another process (thread injection) 18->42 44 Maps a DLL or memory area into another process 18->44 46 Sample uses process hollowing technique 18->46 48 Queues an APC in another process (thread injection) 18->48 21 explorer.exe 18->21 injected process10 dnsIp11 36 www.coraphsyicaltherapy.com 185.53.179.172, 49719, 80 TEAMINTERNET-ASDE Germany 21->36 38 www.dlwhzs.com 103.204.109.18, 49728, 80 HENGTONG-IDC-LLCUS Hong Kong 21->38 40 6 other IPs or domains 21->40 58 System process connects to network (likely due to code injection or exploit) 21->58 25 rundll32.exe 21->25         started        signatures12 process13 signatures14 60 Modifies the context of a thread in another process (thread injection) 25->60 62 Maps a DLL or memory area into another process 25->62 64 Tries to detect virtualization through RDTSC time measurements 25->64 28 cmd.exe 1 25->28         started        process15 process16 30 conhost.exe 28->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6665e9becfbcd071f9d5f1e8635dba4801a354dfb0bee53f4efafecb6146bba6/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-11-21 14:00:30 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mzs6tpwpxtihd6ov6huggxn2jaa2gvg7wc7okp2o7l7mwykgxota._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:tc10 rat spyware stealer trojan
Link:
https://tria.ge/reports/221121-tym1tshd22/
Behaviour
Enumerates system info in registry
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
Unpacked files
SH256 hash:
6e49b2b262ac38f198d3041c9026e33d18c73016e94bde4ff1842f9d3b96939d
MD5 hash:
8b5455ff988635a46fea6849913985a2
SHA1 hash:
efdf67571da97a852a88e41112a1640074877732
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/a5951462-c9bb-499d-8ec6-473bdada7231/
Parent samples :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 hash:
3971cd853c8378c0068e20b16e7da2517decb5041a7317e0dc1760231ee0d04b
MD5 hash:
f073ff564ce935a2915ce0f070308adc
SHA1 hash:
b15521a4936cac43ce2d4c8d809e3a33a0b2ef41
Link:
https://www.unpac.me/results/a5951462-c9bb-499d-8ec6-473bdada7231/
SH256 hash:
6665e9becfbcd071f9d5f1e8635dba4801a354dfb0bee53f4efafecb6146bba6
MD5 hash:
2137e7178040f8ffa1decc904bacde30
SHA1 hash:
f1a3f5a04c969d465f8f96235a76838c1d783a5d
Link:
https://www.unpac.me/results/a5951462-c9bb-499d-8ec6-473bdada7231/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/6665e9becfbcd071f9d5f1e8635dba4801a354dfb0bee53f4efafecb6146bba6

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
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 6665e9becfbcd071f9d5f1e8635dba4801a354dfb0bee53f4efafecb6146bba6

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/336869/

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