MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3436cc5fe025669ba4a7637cb89610951772a32773536ac0302cd43653d7348a. 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 2 File information Comments 1

SHA256 hash: 3436cc5fe025669ba4a7637cb89610951772a32773536ac0302cd43653d7348a
SHA3-384 hash: 589663c1924610d49c3095f9744523189ff40807ae69a45b4a67f4391a417a9bb3b933c4e386388c63c7b3638e9b2a37
SHA1 hash: ecf8971eaa601d03beb0b13c42acee7497a8c369
MD5 hash: 880d2ede0c2f8b3cb9c550353c0dc419
humanhash: oven-quiet-johnny-shade
File name:880d2ede0c2f8b3cb9c550353c0dc419
Download: download sample
Signature Formbook
File size:408'064 bytes
First seen:2022-01-12 09:57:12 UTC
Last seen:2022-01-12 13:08:13 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:fayWld3zzCpnUTjR+0vxnSLxd4lPDqwf:fwd3vmnUTjRzx0f4l7
TLSH T1B6940199322072EEC817D5B6EAA47C60F624387B130BC907925315CE8A5DBD6DF11AF3
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence


File Origin
# of uploads :
3
# of downloads :
216
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
TTpayment.xlsx
Verdict:
Malicious activity
Analysis date:
2022-01-12 08:58:19 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader trojan formbook stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Launching a process
Creating a process with a hidden window
Gathering data
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Detected FormBook malware
Found malware configuration
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: CMSTP Execution Process Creation
Sigma detected: Powershell Defender Exclusion
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 551595 Sample: kvFX5La1UY Startdate: 12/01/2022 Architecture: WINDOWS Score: 100 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 8 other signatures 2->49 10 kvFX5La1UY.exe 4 2->10         started        process3 file4 39 C:\Users\user\AppData\...\kvFX5La1UY.exe.log, ASCII 10->39 dropped 59 Adds a directory exclusion to Windows Defender 10->59 61 Tries to detect virtualization through RDTSC time measurements 10->61 14 kvFX5La1UY.exe 10->14         started        17 powershell.exe 25 10->17         started        signatures5 process6 signatures7 65 Modifies the context of a thread in another process (thread injection) 14->65 67 Maps a DLL or memory area into another process 14->67 69 Sample uses process hollowing technique 14->69 71 Queues an APC in another process (thread injection) 14->71 19 explorer.exe 14->19 injected 21 conhost.exe 17->21         started        process8 process9 23 cmstp.exe 18 19->23         started        file10 35 C:\Users\user\AppData\...\J02logrv.ini, data 23->35 dropped 37 C:\Users\user\AppData\...\J02logri.ini, data 23->37 dropped 51 Detected FormBook malware 23->51 53 Tries to steal Mail credentials (via file / registry access) 23->53 55 Tries to harvest and steal browser information (history, passwords, etc) 23->55 57 3 other signatures 23->57 27 cmd.exe 2 23->27         started        31 explorer.exe 1 152 23->31         started        signatures11 process12 file13 41 C:\Users\user\AppData\Local\Temp\DB1, SQLite 27->41 dropped 63 Tries to harvest and steal browser information (history, passwords, etc) 27->63 33 conhost.exe 27->33         started        signatures14 process15
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-01-12 09:58:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:aq88 rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
4b04ad025c5dee640a1876496ec158dcb2955be84ae2d3f74a96c588f5cb879d
MD5 hash:
b7f209d9ce3a83f44b23b0e0e1130b55
SHA1 hash:
1ac179fb567072c02f81123393f88a4564f878b5
SH256 hash:
6d6255e43f8c15ac35d75832b1b8ac911010720326488ca424eee3e0566817c6
MD5 hash:
6fbeffefb041ca0248c2873f8f170127
SHA1 hash:
dc99780c9888bd4855c7fb8c75e95921ecd6a96a
SH256 hash:
bd17ae3bcbd0bf35a423e29584574f384f9afc672ccbafa3bacb13bc2d7e2d69
MD5 hash:
2c54a7486b3d2af8166bca5d41f9e049
SHA1 hash:
76e28c64732e849abfb5cfab7954e399173a9f77
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
3436cc5fe025669ba4a7637cb89610951772a32773536ac0302cd43653d7348a
MD5 hash:
880d2ede0c2f8b3cb9c550353c0dc419
SHA1 hash:
ecf8971eaa601d03beb0b13c42acee7497a8c369
Malware family:
FormBook
Verdict:
Malicious
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:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Web download

Formbook

Executable exe 3436cc5fe025669ba4a7637cb89610951772a32773536ac0302cd43653d7348a

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-01-12 09:57:14 UTC

url : hxxp://13.229.108.64/wwindows8/csrss.exe