MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83242a0f42be34e66e502e4a3a45d2470f3b24aef8a1d8484711f4439d7fe74a. 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 5 File information Comments 1

SHA256 hash: 83242a0f42be34e66e502e4a3a45d2470f3b24aef8a1d8484711f4439d7fe74a
SHA3-384 hash: 43a402ad8aa9e3194e21cb2c118f5a593c6762ee99594631a6d7ddd4793a31fe34f2c83e8ddd777d60ed85ae933b67db
SHA1 hash: c248ab00560786b7be23151597d9503a2e84602f
MD5 hash: 4c70d5b1c63a468f7e0aedf64f93ca42
humanhash: paris-pizza-lemon-pennsylvania
File name:4c70d5b1c63a468f7e0aedf64f93ca42
Download: download sample
Signature Formbook
File size:1'048'576 bytes
First seen:2021-09-28 06:20:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (23'043 x AgentTesla, 5'566 x Formbook, 3'013 x Loki)
ssdeep 3072:EWrIy8kmoEBZBB2lrEtC1JZdDFs3sb5fkaLZ2sf2h8yezeci6x46xXX07/Bg9s9L:N/ZzLfkuS8yADi6vxU7/w8+PsFT8lw
Threatray 8'247 similar samples on MalwareBazaar
TLSH T1AB255B41E3409EA6DA931FB3D83ACDB18536BE689535D30E284F77260AF335610BDD89
File icon (PE):PE icon
dhash icon 70d2d0d2d8dcd4d4 (2 x Formbook)
Reporter @zbetcheckin
Tags:32 exe FormBook trojan

Intelligence


File Origin
# of uploads :
1
# of downloads :
119
Origin country :
FR FR
Mail intelligence
No data
Vendor Threat Intelligence
ID:
1
File name:
4c70d5b1c63a468f7e0aedf64f93ca42
Verdict:
Suspicious activity
Analysis date:
2021-09-28 06:22:21 UTC
Tags:
n/a

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

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Deleting a recently created file
Launching the default Windows debugger (dwwin.exe)
Malware family:
Generic Malware
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Binary or sample is protected by dotNetProtector
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found 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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to delay execution (extensive OutputDebugStringW loop)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 492896 Sample: UaTmOE6yP9 Startdate: 29/09/2021 Architecture: WINDOWS Score: 100 34 www.chinatowndeliver.com 2->34 36 chinatowndeliver.com 2->36 40 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 7 other signatures 2->46 11 UaTmOE6yP9.exe 2 2->11         started        signatures3 process4 signatures5 56 Tries to delay execution (extensive OutputDebugStringW loop) 11->56 58 Tries to detect virtualization through RDTSC time measurements 11->58 60 Injects a PE file into a foreign processes 11->60 62 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->62 14 UaTmOE6yP9.exe 11->14         started        process6 signatures7 64 Modifies the context of a thread in another process (thread injection) 14->64 66 Maps a DLL or memory area into another process 14->66 68 Sample uses process hollowing technique 14->68 70 Queues an APC in another process (thread injection) 14->70 17 explorer.exe 14->17 injected process8 dnsIp9 28 productprinting.online 108.179.246.105, 49812, 80 UNIFIEDLAYER-AS-1US United States 17->28 30 shops.myshopify.com 23.227.38.74, 49817, 80 CLOUDFLARENETUS Canada 17->30 32 16 other IPs or domains 17->32 38 System process connects to network (likely due to code injection or exploit) 17->38 21 wscript.exe 17->21         started        signatures10 process11 signatures12 48 Self deletion via cmd delete 21->48 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-09-27 11:46:00 UTC
AV detection:
24 of 45 (53.33%)
Threat level:
  5/5
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader campaign:mjyv loader rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.simpeltattofor.men/mjyv/
Unpacked files
SH256 hash:
5504a5d754cf7b84da550e9f14d30817fd8f5dd98753701d9ec7516d92b015bc
MD5 hash:
7ad3ea0dcbe73bb9445199f99d4d4222
SHA1 hash:
fb4a26a6870e88a5d15cf593b915aa01ddd6ca8e
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
83242a0f42be34e66e502e4a3a45d2470f3b24aef8a1d8484711f4439d7fe74a
MD5 hash:
4c70d5b1c63a468f7e0aedf64f93ca42
SHA1 hash:
c248ab00560786b7be23151597d9503a2e84602f
Malware family:
FormBook
Verdict:
Malicious

YARA Signatures


MalareBazaar uses YARA rules from several public and non-public repositories, such as Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious proccess dumps they may create. Please note that only results from TLP:WHITE rules are being displayeyd.

Rule name:Formbook
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
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.

Web download

Formbook

Executable exe 83242a0f42be34e66e502e4a3a45d2470f3b24aef8a1d8484711f4439d7fe74a

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2021-09-28 06:20:05 UTC

url : hxxp://31.210.20.22/xxm/cc.exe