MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 42ff33d8a2c198145c876fbfab4855fa43faaf292d10c73f144619c34714f97e. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 42ff33d8a2c198145c876fbfab4855fa43faaf292d10c73f144619c34714f97e
SHA3-384 hash: e9bab4b204810108b1a14cfd564d217f70be2b6752a50fc88f7177d37cb4e02523f58382bb375e8e7c2a504a35d6cdab
SHA1 hash: 2fa3f6914fe95ebd19d6395fed3296dee351ec56
MD5 hash: 9f3d2f161ab12215d8127143188fadc6
humanhash: river-five-wyoming-helium
File name:file
Download: download sample
Signature Formbook
Create hunting rule
File size:75'072 bytes
First seen:2022-11-02 03:38:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'602 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 1536:4WmCpPvpguzG3Uj/mvaVaDLGnsyjLixPd:4W3PLzUSmvaVaDLGnsyPA
Threatray 2'475 similar samples on MalwareBazaar
TLSH T11E732F9C766075DFC85BC472CEA95C64EA6074BB930BC203A05326AD9E4D99BCF190F3
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 d2e8ecb2b2a2b282 (106 x AgentTesla, 106 x Formbook, 24 x RedLineStealer)
Reporter jstrosch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
261
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2022-11-02 03:43:19 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/11e9a240-210b-4803-8753-fb7c40d1df1f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/326961/
Detection(s):
SecuriteInfo.com.UntrustedCertificate.Aichost.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Sending an HTTP GET request
Launching a process
Creating a file
Searching for synchronization primitives
DNS request
Reading critical registry keys
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Query of malicious DNS domain
Sending a TCP request to an infection source
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated overlay packed packed
Link:
https://www.filescan.io/uploads/6361e65858409ff7bc0c80dd/reports/39d06228-8498-43ce-9955-d36d9859badb/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/a4830428-1d04-4f95-9d93-2f57679c8aa4
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1102944
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
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 harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 735605 Sample: file.exe Startdate: 02/11/2022 Architecture: WINDOWS Score: 100 37 Snort IDS alert for network traffic 2->37 39 Multi AV Scanner detection for domain / URL 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 6 other signatures 2->43 8 file.exe 15 3 2->8         started        process3 dnsIp4 31 tgc8x.tk 50.115.174.192, 443, 49699, 49700 VIRPUS United States 8->31 23 C:\Users\user\AppData\Local\...\file.exe.log, CSV 8->23 dropped 53 Writes to foreign memory regions 8->53 55 Allocates memory in foreign processes 8->55 57 Injects a PE file into a foreign processes 8->57 13 CasPol.exe 8->13         started        file5 signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 13->59 61 Maps a DLL or memory area into another process 13->61 63 Sample uses process hollowing technique 13->63 65 Queues an APC in another process (thread injection) 13->65 16 explorer.exe 13->16 injected process9 dnsIp10 25 www.vr360heros.com 156.254.145.14, 49704, 49705, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 16->25 27 www.hnsmhbkj.com 123.253.227.109, 49710, 49711, 80 TFN-TWTaiwanFixedNetworkTelcoandNetworkServiceProvi Hong Kong 16->27 29 4 other IPs or domains 16->29 33 System process connects to network (likely due to code injection or exploit) 16->33 35 Performs DNS queries to domains with low reputation 16->35 20 wscript.exe 13 16->20         started        signatures11 process12 signatures13 45 Tries to steal Mail credentials (via file / registry access) 20->45 47 Tries to harvest and steal browser information (history, passwords, etc) 20->47 49 Modifies the context of a thread in another process (thread injection) 20->49 51 Maps a DLL or memory area into another process 20->51
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/42ff33d8a2c198145c876fbfab4855fa43faaf292d10c73f144619c34714f97e/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2022-11-01 12:13:46 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
19 of 26 (73.08%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=il7thwfcygmbixehn672wscv7jb7vlzjfuimopyuiym4gryu7f7a._file
Verdict:
malicious
Similar samples:
58bd321dd55e8d0d95a1dc5147329a08c64d91a6567d1ac8b4b7e2f1d5ee8803
Formbook
6958abe800cfc61111ed84296406d0b8cb8a251209bb08b5772a25fc0c65ac2c
Formbook
8a553b6a9ee5177e24eee3b0af2bf0dd813e1daf2ce6d3a90294f815606bc62e
Formbook
8d2245952066731545e35c0dd194b48df2e16010d34136ed5b07bc96d763f613
Formbook
a2942f4b52d24096733c6a8373bc3cee7f1823120bf652c688b8296b04a94a96
Formbook
c1bc25f768e41a646f902de9572b855ac973cfa7a9c6bef82c5a99123a72e67b
Formbook
dceab4eabbcf9787ac9a36c289afaa036782a24edd35523fb3072b030029faf2
Formbook
f41437ca03cac6a40974f48ba8b8b38856f9f6de955f7514b3e18471ed73789f
Formbook
f8904db64b83e85ee7ec0747230c18a8cd6d28a05e5784be796182fa4ea79b0d
Formbook
+ 2'465 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:tu7g rat spyware stealer trojan
Link:
https://tria.ge/reports/221102-d7l7wshad7/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Blocklisted process makes network request
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/df8e7302-7c3c-4f27-9936-c2453edb7bbf
Unpacked files
SH256 hash:
909af19bed5ad8fe15cd78684f474949bdbb993db5cffbc7ac8c46bbb7556fe4
MD5 hash:
5090ec9b3e0c5d745013138cb8472de9
SHA1 hash:
a6ce455290cac48216e07b5bbd21851f464c70fa
Link:
https://www.unpac.me/results/a06eaada-a6be-4594-8894-c97c148a3571/
SH256 hash:
42ff33d8a2c198145c876fbfab4855fa43faaf292d10c73f144619c34714f97e
MD5 hash:
9f3d2f161ab12215d8127143188fadc6
SHA1 hash:
2fa3f6914fe95ebd19d6395fed3296dee351ec56
Link:
https://www.unpac.me/results/a06eaada-a6be-4594-8894-c97c148a3571/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/42ff33d8a2c198145c876fbfab4855fa43faaf292d10c73f144619c34714f97e

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:INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
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 42ff33d8a2c198145c876fbfab4855fa43faaf292d10c73f144619c34714f97e

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/326961/
  
URLhaus
https://urlhaus.abuse.ch/url/2396482/

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