MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c42c3c90213a81b02516c70b966cc6cd5a8901574cdafead6e563a723049df38. 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: 13


Intelligence 13 IOCs YARA 11 File information Comments
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SHA256 hash: c42c3c90213a81b02516c70b966cc6cd5a8901574cdafead6e563a723049df38
SHA3-384 hash: bed60ea863de63f47009ef5c4fbf5c41b9656189772dac13dbdadd8869872a2a3cdc3154dc533b070783963a754a0471
SHA1 hash: 6382f1d81216c3b7dcd05143419186d1d4516191
MD5 hash: dcaa3d358a14176d4edc3950fa5894e0
humanhash: jupiter-autumn-equal-video
File name:SecuriteInfo.com.W32.AIDetectNet.01.475.18441
Download: download sample
Signature Formbook
Create hunting rule
File size:495'104 bytes
First seen:2022-06-30 08:39:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:6TviyjqtVZM/QGN+thVVlg5aeNgK6swC:RDO1N+thVVlMDgK6nC
TLSH T197B47F2C7A055A72FC1DD031CD410A44BB2A1B1377B0A996AFCB15CA878FDED2F15AD8
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon c4dadac2dae482c2 (5 x RedLineStealer, 2 x Formbook, 1 x NanoCore)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
222
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/284547/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Launching the default Windows debugger (dwwin.exe)
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62bd61a56ad95faf97e0714a/reports/a7a78532-d5b7-4ac5-91ae-38ab29104eb5/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/690c2fc1-2dbc-43f2-892d-29102b122c15
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1022465
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
Binary or sample is protected by dotNetProtector
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
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
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 654962 Sample: SecuriteInfo.com.W32.AIDete... Startdate: 30/06/2022 Architecture: WINDOWS Score: 100 33 www.w0080.com 2->33 35 zz.zhanghonghong.com 2->35 37 www.kudoki.net 2->37 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus detection for URL or domain 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 5 other signatures 2->47 11 SecuriteInfo.com.W32.AIDetectNet.01.475.exe 2 2->11         started        signatures3 process4 signatures5 57 Writes to foreign memory regions 11->57 59 Allocates memory in foreign processes 11->59 61 Injects a PE file into a foreign processes 11->61 14 vbc.exe 11->14         started        17 WerFault.exe 23 9 11->17         started        process6 dnsIp7 63 Modifies the context of a thread in another process (thread injection) 14->63 65 Maps a DLL or memory area into another process 14->65 67 Sample uses process hollowing technique 14->67 69 2 other signatures 14->69 20 explorer.exe 14->20 injected 31 192.168.2.1 unknown unknown 17->31 signatures8 process9 dnsIp10 39 www.evolv3-consulting.com 20->39 49 System process connects to network (likely due to code injection or exploit) 20->49 24 wscript.exe 20->24         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 24->51 53 Maps a DLL or memory area into another process 24->53 55 Tries to detect virtualization through RDTSC time measurements 24->55 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c42c3c90213a81b02516c70b966cc6cd5a8901574cdafead6e563a723049df38/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-06-30 08:40:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
37
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yqwdzebbhka3ajiwy4fzm3ggzvnisakxjtnp5lloky5hemcj344a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:g3t1 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220630-kkwalsbed7/
Behaviour
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
Program crash
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
e5799ac6f98021f725ef0af0f263f6a7bf90af94a5aa685e5381186dc5ff9355
MD5 hash:
d4200fcbb21d41da9e9c6a099bfb5436
SHA1 hash:
8baea20312dbfc7c302156852ad7ce54b97dbc30
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/5404bd4e-ee3e-4aec-b113-d8e9f698a547/
Parent samples :
b0e427b8e2db98edeea688cda0c6b0e33f936fae3a7b09b529a85a6190083df4
67edbb99d3aba4abdd5edb3151171935ac1ceb730fd3227da79c33e3b2ab03c9
c42c3c90213a81b02516c70b966cc6cd5a8901574cdafead6e563a723049df38
SH256 hash:
c42c3c90213a81b02516c70b966cc6cd5a8901574cdafead6e563a723049df38
MD5 hash:
dcaa3d358a14176d4edc3950fa5894e0
SHA1 hash:
6382f1d81216c3b7dcd05143419186d1d4516191
Link:
https://www.unpac.me/results/5404bd4e-ee3e-4aec-b113-d8e9f698a547/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c42c3c90213a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/c42c3c90213a81b02516c70b966cc6cd5a8901574cdafead6e563a723049df38

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:INDICATOR_EXE_Packed_Babel
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Babel
Rule name:INDICATOR_EXE_Packed_Dotfuscator
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Dotfuscator
Rule name:INDICATOR_EXE_Packed_dotNetProtector
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with dotNetProtector
Rule name:INDICATOR_EXE_Packed_Goliath
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Goliath
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
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.

Cape
Cape
https://www.capesandbox.com/analysis/284547/

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