MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 239419437726bda1c5401f36629aa95050346433232192947ca54890ebb8a39f. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments 1

SHA256 hash: 239419437726bda1c5401f36629aa95050346433232192947ca54890ebb8a39f
SHA3-384 hash: c6cec498a16ef7e3b4a4a0feeec6a3c226cf749e8e616768a13471fa08cfb0e026034689bab46fcd62186b03653cffb6
SHA1 hash: a1db641fd6a2ccbfd305e92bc61d86803d1523bc
MD5 hash: 54cbaf431313a0936f684aa2a187934f
humanhash: nuts-pasta-earth-jupiter
File name:54cbaf431313a0936f684aa2a187934f
Download: download sample
Signature Formbook
File size:921'088 bytes
First seen:2022-04-11 08:43:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3f80d1f9d9f013af2a55533ae8960c8c (5 x Formbook, 2 x DBatLoader, 2 x RemcosRAT)
ssdeep 24576:niZakGXsru5PAKhEqmlydutZUoEtdPgMb:niWcWfPgM
TLSH T192159E11B2914E37D47B0A79CC5BA7A55937BF433E1C6B872AE42D0C2E7A2413D26393
File icon (PE):PE icon
dhash icon 0c321272b98ca6d9 (12 x Formbook, 7 x RemcosRAT, 5 x DBatLoader)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
275
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
54cbaf431313a0936f684aa2a187934f
Verdict:
Malicious activity
Analysis date:
2022-04-11 08:46:19 UTC
Tags:
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
Сreating synchronization primitives
Creating a window
DNS request
Sending an HTTP GET request
Creating a file
Launching a process
Sending a custom TCP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Behaviour
MalwareBazaar
CheckScreenResolution
CheckCmdLine
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe keylogger shell32.dll
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
Creates a thread in another existing process (thread injection)
Injects a PE file into a foreign processes
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
Sigma detected: Application Executed Non-Executable Extension
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Execution from Suspicious Folder
Sigma detected: Suspicious Program Location with Network Connections
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 606867 Sample: ySk4M53zce Startdate: 11/04/2022 Architecture: WINDOWS Score: 100 55 Malicious sample detected (through community Yara rule) 2->55 57 Antivirus detection for URL or domain 2->57 59 Multi AV Scanner detection for submitted file 2->59 61 6 other signatures 2->61 9 ySk4M53zce.exe 1 16 2->9         started        process3 dnsIp4 45 k8vnpro.com 172.96.191.243, 49733, 49734, 49744 LEASEWEB-APAC-SIN-11LeasewebAsiaPacificpteltdSG Canada 9->45 39 C:\Users\Public\Libraries\Hdxhpfu.exe, PE32 9->39 dropped 81 Writes to foreign memory regions 9->81 83 Creates a thread in another existing process (thread injection) 9->83 85 Injects a PE file into a foreign processes 9->85 14 logagent.exe 9->14         started        file5 signatures6 process7 signatures8 87 Modifies the context of a thread in another process (thread injection) 14->87 89 Maps a DLL or memory area into another process 14->89 91 Sample uses process hollowing technique 14->91 93 2 other signatures 14->93 17 explorer.exe 4 3 14->17 injected 19 control.exe 14->19         started        process9 signatures10 22 Hdxhpfu.exe 13 17->22         started        26 Hdxhpfu.exe 14 17->26         started        28 help.exe 17->28         started        30 5 other processes 17->30 63 Tries to detect virtualization through RDTSC time measurements 19->63 process11 dnsIp12 41 k8vnpro.com 22->41 65 Multi AV Scanner detection for dropped file 22->65 67 Writes to foreign memory regions 22->67 69 Allocates memory in foreign processes 22->69 32 DpiScaling.exe 22->32         started        43 k8vnpro.com 26->43 71 Creates a thread in another existing process (thread injection) 26->71 73 Injects a PE file into a foreign processes 26->73 35 logagent.exe 26->35         started        75 Modifies the context of a thread in another process (thread injection) 28->75 77 Maps a DLL or memory area into another process 28->77 79 Tries to detect virtualization through RDTSC time measurements 28->79 37 explorer.exe 130 28->37         started        signatures13 process14 signatures15 47 Modifies the context of a thread in another process (thread injection) 32->47 49 Maps a DLL or memory area into another process 32->49 51 Sample uses process hollowing technique 32->51 53 Tries to detect virtualization through RDTSC time measurements 32->53
Threat name:
Win32.Trojan.SpyNoon
Status:
Malicious
First seen:
2022-04-11 08:44:10 UTC
File Type:
PE (Exe)
Extracted files:
40
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:modiloader family:xloader campaign:xtef loader persistence rat trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Xloader Payload
ModiLoader, DBatLoader
Xloader
Unpacked files
SH256 hash:
53ac01aeca155b02914c382b97c6f89cf21d6280f488a30eca707bdb9693ce88
MD5 hash:
c755150a74c084c199d24042e9796f35
SHA1 hash:
0fea1a6ae181215deb872c5bb4d2f9ee242f3319
Detections:
win_dbatloader_w0
SH256 hash:
239419437726bda1c5401f36629aa95050346433232192947ca54890ebb8a39f
MD5 hash:
54cbaf431313a0936f684aa2a187934f
SHA1 hash:
a1db641fd6a2ccbfd305e92bc61d86803d1523bc
Malware family:
XLoader
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:malware_Formbook_strings
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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 239419437726bda1c5401f36629aa95050346433232192947ca54890ebb8a39f

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-04-11 08:43:20 UTC

url : hxxp://107.173.219.53/770/vbc.exe