MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e4d5d94ced6c3f57c4aa9c9d7b910ff1fa99d2befda7e8d2bd3749a687be8f3d. 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: 7


Intelligence 7 IOCs YARA 2 File information Comments
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SHA256 hash: e4d5d94ced6c3f57c4aa9c9d7b910ff1fa99d2befda7e8d2bd3749a687be8f3d
SHA3-384 hash: 532efc0f51346933e3ab81a556660b781130c99772815ee60c4dbb8ea9b9656ea2111cdc90bfd64308c1132bb069046a
SHA1 hash: c0cc9bdc295aa959544a08a347c27c9ec8d951db
MD5 hash: 5bc7fe05cc6777e298f4af807926dfe6
humanhash: fourteen-lithium-kansas-video
File name:SecuriteInfo.com.BehavesLike.Win32.Generic.gc.10819
Download: download sample
Signature Formbook
Create hunting rule
File size:473'600 bytes
First seen:2020-10-28 12:07:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:LV/4rjvGiO9C6likELMHR7iyf03UXmQO:8O9C6likAyf3O
TLSH FBA4C0B23C92587ECA6B0775556981C0FAB627C73FA48B0D719F430C0E15E6BAB53287
Reporter SecuriteInfoCom
Tags:FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
118
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/80476/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.gc.10819.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Sending a UDP request
Creating a window
Creating a file
Creating a process from a recently created file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/514993
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
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)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 306604 Sample: SecuriteInfo.com.BehavesLik... Startdate: 28/10/2020 Architecture: WINDOWS Score: 100 32 Malicious sample detected (through community Yara rule) 2->32 34 Multi AV Scanner detection for submitted file 2->34 36 Yara detected FormBook 2->36 38 3 other signatures 2->38 10 SecuriteInfo.com.BehavesLike.Win32.Generic.gc.exe 8 2->10         started        process3 file4 26 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->26 dropped 28 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->28 dropped 30 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->30 dropped 46 Writes to foreign memory regions 10->46 48 Allocates memory in foreign processes 10->48 50 Tries to detect virtualization through RDTSC time measurements 10->50 52 Injects a PE file into a foreign processes 10->52 14 AddInProcess32.exe 10->14         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Tries to detect virtualization through RDTSC time measurements 14->58 60 Queues an APC in another process (thread injection) 14->60 17 explorer.exe 14->17 injected process8 process9 19 cmstp.exe 17->19         started        signatures10 40 Modifies the context of a thread in another process (thread injection) 19->40 42 Maps a DLL or memory area into another process 19->42 44 Tries to detect virtualization through RDTSC time measurements 19->44 22 cmd.exe 1 19->22         started        process11 process12 24 conhost.exe 22->24         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e4d5d94ced6c3f57c4aa9c9d7b910ff1fa99d2befda7e8d2bd3749a687be8f3d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-28 09:46:01 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=4tk5sthnnq7vprfktsoxxeip6h5jtuv67wt6ruv5g5e2nb56r46q._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201028-m4g424n172/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.lavishlynelle.com/acq/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Web download

Formbook

Executable exe e4d5d94ced6c3f57c4aa9c9d7b910ff1fa99d2befda7e8d2bd3749a687be8f3d

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/80476/
  
URLhaus
https://urlhaus.abuse.ch/url/760039/
  
Delivery method
Distributed via web download

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