MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4af6ad9cb7c52362c67750fc09eb98b55e19d1e781ab91b2c8a62071c62eaf97. 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 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4af6ad9cb7c52362c67750fc09eb98b55e19d1e781ab91b2c8a62071c62eaf97
SHA3-384 hash: cf81d248c4fb200ddf1cc6bcd3ac26d89925678a28e91e243db75785d6eee44dbf88f0f0f979553495082b392bb6d186
SHA1 hash: d46ffdb906e452cba2ab5b2e19850f677d408107
MD5 hash: 2fc87b78d28e559052c680fe891796ef
humanhash: sad-spring-leopard-violet
File name:2fc87b78d28e559052c680fe891796ef
Download: download sample
Signature Formbook
Create hunting rule
File size:64'000 bytes
First seen:2022-06-23 13:02:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 1536:mGOKXqNKAuDUaQl+kzdC9GiZQWSwi/fUpS/fX/MN2:4vQAuis1Jy///f/Mk
TLSH T1AB53C0017FD4983EE66D09B367D1C5876A39E3016D2289166F7B94472DA338E4EFCA0C
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 0c3259796961b24c (12 x RemcosRAT, 11 x Formbook, 6 x AgentTesla)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
246
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/282650/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Сreating synchronization primitives
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62b4648b666084d72549767d/reports/07c7fba0-c5d5-4f20-92f1-a93497e601f9/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1669224d-8c7d-4fa1-9f83-4a745fc45e5e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1018654
Signature
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 dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
Tries to detect virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 651152 Sample: Q7mVpldIM1 Startdate: 23/06/2022 Architecture: WINDOWS Score: 100 72 www-bing-com.dual-a-0001.a-msedge.net 2->72 74 stackoverflow.com 2->74 76 2 other IPs or domains 2->76 94 Snort IDS alert for network traffic 2->94 96 Malicious sample detected (through community Yara rule) 2->96 98 Antivirus detection for URL or domain 2->98 100 7 other signatures 2->100 11 Q7mVpldIM1.exe 16 7 2->11         started        signatures3 process4 dnsIp5 78 172.245.26.174, 49745, 49771, 49774 AS-COLOCROSSINGUS United States 11->78 80 151.101.1.69 FASTLYUS United States 11->80 82 3 other IPs or domains 11->82 60 C:\Users\user\AppData\Roaming\...\Vayygdq.exe, PE32 11->60 dropped 62 C:\Users\user\...\Vayygdq.exe:Zone.Identifier, ASCII 11->62 dropped 64 C:\Users\user\AppData\...\Q7mVpldIM1.exe.log, ASCII 11->64 dropped 104 Writes to foreign memory regions 11->104 106 Injects a PE file into a foreign processes 11->106 16 MSBuild.exe 11->16         started        19 MSBuild.exe 11->19         started        21 cmd.exe 1 11->21         started        file6 signatures7 process8 signatures9 84 Modifies the context of a thread in another process (thread injection) 16->84 86 Maps a DLL or memory area into another process 16->86 88 Sample uses process hollowing technique 16->88 90 Queues an APC in another process (thread injection) 16->90 23 explorer.exe 2 16->23 injected 92 Tries to detect virtualization through RDTSC time measurements 19->92 26 conhost.exe 21->26         started        28 timeout.exe 1 21->28         started        process10 signatures11 102 Uses netstat to query active network connections and open ports 23->102 30 NETSTAT.EXE 23->30         started        33 Vayygdq.exe 14 4 23->33         started        36 Vayygdq.exe 3 23->36         started        38 autofmt.exe 23->38         started        process12 dnsIp13 108 Modifies the context of a thread in another process (thread injection) 30->108 110 Maps a DLL or memory area into another process 30->110 112 Tries to detect virtualization through RDTSC time measurements 30->112 40 cmd.exe 30->40         started        66 192.168.2.1 unknown unknown 33->66 68 stackoverflow.com 33->68 114 Writes to foreign memory regions 33->114 116 Injects a PE file into a foreign processes 33->116 42 cmd.exe 33->42         started        44 MSBuild.exe 33->44         started        70 stackoverflow.com 36->70 46 cmd.exe 36->46         started        48 MSBuild.exe 36->48         started        signatures14 process15 process16 50 conhost.exe 40->50         started        52 conhost.exe 42->52         started        54 timeout.exe 42->54         started        56 conhost.exe 46->56         started        58 timeout.exe 46->58         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4af6ad9cb7c52362c67750fc09eb98b55e19d1e781ab91b2c8a62071c62eaf97/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2022-06-23 13:03:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
17 of 26 (65.38%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jl3k3hfxyurwfrtxkd6at24ywvpbtuphqgvzdmwiuyqhdrrov6lq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:g36t loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220623-qaccmsfgf9/
Behaviour
Delays execution with timeout.exe
Gathers network information
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Reads user/profile data of web browsers
Adds policy Run key to start application
Executes dropped EXE
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
4af6ad9cb7c52362c67750fc09eb98b55e19d1e781ab91b2c8a62071c62eaf97
MD5 hash:
2fc87b78d28e559052c680fe891796ef
SHA1 hash:
d46ffdb906e452cba2ab5b2e19850f677d408107
Link:
https://www.unpac.me/results/3e65eb84-8ed5-4d0e-886d-adc1d6564a76/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4af6ad9cb7c5/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/4af6ad9cb7c52362c67750fc09eb98b55e19d1e781ab91b2c8a62071c62eaf97

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
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 4af6ad9cb7c52362c67750fc09eb98b55e19d1e781ab91b2c8a62071c62eaf97

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2247814/
Cape
Cape
https://www.capesandbox.com/analysis/282650/

Comments


Avatar
zbet commented on 2022-06-23 13:02:46 UTC

url : hxxp://23.94.159.198/kubar.exe