MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 413e58ab30e56edfaa7899ebe3fc8655314c993db5a0d1840100752ba6be0be0. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments

SHA256 hash: 413e58ab30e56edfaa7899ebe3fc8655314c993db5a0d1840100752ba6be0be0
SHA3-384 hash: 1866edca5328b8c12e2ebc482dfec38477e836cc296adb35b669875eeeb8fa7b876fda1fe3c5e0bf02c6132dda18fca6
SHA1 hash: cd7beb58da064e0caebcc5604893bb3be6568b45
MD5 hash: b432fee7f4857a9ad25f143b2ac645a9
humanhash: uranus-juliet-network-paris
File name:dekont 2022.exe
Download: download sample
Signature Formbook
File size:224'832 bytes
First seen:2022-04-19 13:13:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 56a78d55f3f7af51443e58e0ce2fb5f6 (720 x GuLoader, 451 x Formbook, 295 x Loki)
ssdeep 6144:HNeZmRbIX3/HI5ZqUicb/74ax7gFxt/LK:HNlhIX3/GIcDE3FvG
Threatray 15'009 similar samples on MalwareBazaar
TLSH T1BB240215B7F4C8F3F1A30A731976A27A5EA2F9213266470B23506B9D7878681EF0F345
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter pr0xylife
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
262
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe formbook overlay packed python shell32.dll
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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 domain / URL
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 (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 611344 Sample: dekont 2022.exe Startdate: 19/04/2022 Architecture: WINDOWS Score: 100 36 www.dobsonfryedentist.com 2->36 38 www.cornerstone-constructions.com 2->38 40 2 other IPs or domains 2->40 56 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->56 58 Multi AV Scanner detection for domain / URL 2->58 60 Found malware configuration 2->60 62 6 other signatures 2->62 12 dekont 2022.exe 18 2->12         started        signatures3 process4 file5 34 C:\Users\user\AppData\...\mjabhrxdeb.exe, PE32 12->34 dropped 15 mjabhrxdeb.exe 1 12->15         started        process6 signatures7 72 Multi AV Scanner detection for dropped file 15->72 74 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 15->74 76 Tries to detect virtualization through RDTSC time measurements 15->76 78 Injects a PE file into a foreign processes 15->78 18 mjabhrxdeb.exe 15->18         started        21 conhost.exe 15->21         started        process8 signatures9 48 Modifies the context of a thread in another process (thread injection) 18->48 50 Maps a DLL or memory area into another process 18->50 52 Sample uses process hollowing technique 18->52 54 Queues an APC in another process (thread injection) 18->54 23 explorer.exe 18->23 injected process10 dnsIp11 42 bestprodutos.com 192.185.177.54, 49799, 80 UNIFIEDLAYER-AS-1US United States 23->42 44 www.solchange.com 23->44 46 14 other IPs or domains 23->46 64 System process connects to network (likely due to code injection or exploit) 23->64 27 mstsc.exe 23->27         started        signatures12 process13 signatures14 66 Modifies the context of a thread in another process (thread injection) 27->66 68 Maps a DLL or memory area into another process 27->68 70 Tries to detect virtualization through RDTSC time measurements 27->70 30 cmd.exe 1 27->30         started        process15 process16 32 conhost.exe 30->32         started       
Threat name:
Win32.Trojan.FormBook
Status:
Malicious
First seen:
2022-04-19 10:35:42 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
22 of 25 (88.00%)
Threat level:
  5/5
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader campaign:cbgo loader rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Xloader Payload
Xloader
Unpacked files
SH256 hash:
133d4e616c1d84e1210cbc95408fb9fa7c95647b964dc9d93cf0da0f18cec736
MD5 hash:
ebc78b15b08cbdbe9d97f4c4a1d2f581
SHA1 hash:
3b11c202e6a2fe5bf518854f6ba5aa722fed1cf5
SH256 hash:
413e58ab30e56edfaa7899ebe3fc8655314c993db5a0d1840100752ba6be0be0
MD5 hash:
b432fee7f4857a9ad25f143b2ac645a9
SHA1 hash:
cd7beb58da064e0caebcc5604893bb3be6568b45
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.

Comments