MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 caa38badb67b8cb6178a92166c376185970eac84ec3ff595ca85d3c4cd23c78d. 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: 10


Intelligence 10 IOCs YARA 4 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: caa38badb67b8cb6178a92166c376185970eac84ec3ff595ca85d3c4cd23c78d
SHA3-384 hash: cc347558831323b1561e312629cb2d73d358eb8b02585ebbd9f6520c53f0fbcac76d403ccaf1ebb6516813a10ffd0c00
SHA1 hash: 213e9a7b12c507cf72db02775fc276962558ae58
MD5 hash: 170cd35a3dddf342730c34d4e4acbd83
humanhash: red-oranges-alanine-yankee
File name:170cd35a3dddf342730c34d4e4acbd83
Download: download sample
Signature Formbook
Create hunting rule
File size:29'184 bytes
First seen:2022-07-27 21:50:01 UTC
Last seen:2022-07-27 23:58:24 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 384:1Ce++5qqSY5DzG1ck6GTqjHlZKAf/l3NGxAVKNLwSCPiIbPHQYtzI:1N+TYxzhGQlZKA13yJNUSYiG/dI
TLSH T19DD2D1D2E3908572E2F34635543B920596B5E318CA11976E58F8B1172EB2F1DCFE0F22
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon d0f8ace8ecf4f0b4 (2 x Formbook)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
304
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/294754/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.472.3345.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Query of malicious DNS domain
Sending an HTTP GET request to an infection source
Enabling autorun by creating a file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed stealer stealer
Link:
https://www.filescan.io/uploads/62e1b38aa2f481deb96fb738/reports/3b02bd10-585e-434c-b296-f0c62081e095/overview
Result
Verdict:
UNKNOWN
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a7a6aa1c-10cf-4cd8-b6c8-487aea454623
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1042148
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Encrypted powershell cmdline option found
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 674638 Sample: bL7w0UZ0rj Startdate: 27/07/2022 Architecture: WINDOWS Score: 100 43 Multi AV Scanner detection for domain / URL 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for URL or domain 2->47 49 7 other signatures 2->49 10 bL7w0UZ0rj.exe 15 7 2->10         started        process3 dnsIp4 39 sucon.ga 192.185.174.179, 49714, 80 UNIFIEDLAYER-AS-1US United States 10->39 41 192.168.2.1 unknown unknown 10->41 33 C:\Users\user\AppData\...33fgaboif.exe, PE32 10->33 dropped 35 C:\Users\...35fgaboif.exe:Zone.Identifier, ASCII 10->35 dropped 37 C:\Users\user\AppData\...\bL7w0UZ0rj.exe.log, ASCII 10->37 dropped 57 Creates an undocumented autostart registry key 10->57 59 Encrypted powershell cmdline option found 10->59 15 MSBuild.exe 10->15         started        18 powershell.exe 15 10->18         started        file5 signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 2 other signatures 15->67 20 explorer.exe 15->20 injected 22 conhost.exe 18->22         started        process9 process10 24 cmmon32.exe 20->24         started        signatures11 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        29 explorer.exe 103 24->29         started        process12 process13 31 conhost.exe 27->31         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/caa38badb67b8cb6178a92166c376185970eac84ec3ff595ca85d3c4cd23c78d/
Threat name:
ByteCode-MSIL.Downloader.PsDownload
Create hunting rule
Status:
Malicious
First seen:
2022-07-27 21:51:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
19 of 26 (73.08%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zkryxlnwpoglmf4ksilgyn3bqwlq5lee5q77lfokqxj4jtjdy6gq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:s4s9 rat spyware stealer trojan
Link:
https://tria.ge/reports/220727-1pxl8sdeh2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
caa38badb67b8cb6178a92166c376185970eac84ec3ff595ca85d3c4cd23c78d
MD5 hash:
170cd35a3dddf342730c34d4e4acbd83
SHA1 hash:
213e9a7b12c507cf72db02775fc276962558ae58
Link:
https://www.unpac.me/results/3f5568d6-f142-4137-821a-cc337fdb98fc/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/caa38badb67b/report/overview.html
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: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
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
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 caa38badb67b8cb6178a92166c376185970eac84ec3ff595ca85d3c4cd23c78d

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2261967/
Cape
Cape
https://www.capesandbox.com/analysis/294754/

Comments


Avatar
zbet commented on 2022-07-27 21:50:07 UTC

url : hxxp://198.12.89.157/u/g21.exe