MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 49525525300554e0603a1ee766a78813c54ed100ca3292cf781d0223511beaef. 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: 16


Intelligence 16 IOCs YARA 1 File information Comments

SHA256 hash: 49525525300554e0603a1ee766a78813c54ed100ca3292cf781d0223511beaef
SHA3-384 hash: 535b6c7a66db0660d24f116d4cf47a3c3e31cff7f796a08d911ba0504684ec8a8640978eddb7a0b7473d8a8b34208107
SHA1 hash: 59c4336cd94369972d7fe8d3293c2e791a879f4c
MD5 hash: 96ed88269359efe666567b1a60583147
humanhash: vegan-wolfram-zulu-asparagus
File name:PO_3534272.exe
Download: download sample
Signature Formbook
File size:561'664 bytes
First seen:2023-04-26 12:36:04 UTC
Last seen:2023-05-13 22:55:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 12288:FlQRHHHHnHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHd:FprktWeowxpG3Nuh1kWp0Sj
Threatray 1'349 similar samples on MalwareBazaar
TLSH T130C4DF14B7F856E4F3F3CB349B718829BB767D9A2935C5BD1948000D0872B54A862FBB
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter malwarelabnet
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
303
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
PO_3534272.exe
Verdict:
Malicious activity
Analysis date:
2023-04-26 12:36:46 UTC
Tags:
formbook xloader

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

Behaviour
Launching a process
Creating a file
Searching for synchronization primitives
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm packed
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.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 854452 Sample: PO_3534272.exe Startdate: 26/04/2023 Architecture: WINDOWS Score: 100 42 Snort IDS alert for network traffic 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 12 other signatures 2->48 10 PO_3534272.exe 3 2->10         started        process3 file4 34 C:\Users\user\AppData\...\PO_3534272.exe.log, CSV 10->34 dropped 56 Writes to foreign memory regions 10->56 58 Injects a PE file into a foreign processes 10->58 14 jsc.exe 10->14         started        17 vbc.exe 10->17         started        19 aspnet_compiler.exe 10->19         started        21 8 other processes 10->21 signatures5 process6 signatures7 66 Modifies the context of a thread in another process (thread injection) 14->66 68 Maps a DLL or memory area into another process 14->68 70 Tries to detect virtualization through RDTSC time measurements 14->70 72 Queues an APC in another process (thread injection) 14->72 23 explorer.exe 5 6 14->23 injected process8 dnsIp9 36 www.jxmheioioyull.tokyo 139.162.69.21, 49701, 80 LINODE-APLinodeLLCUS Netherlands 23->36 38 ssl1.prod.systemdragon.com 104.17.157.1, 49703, 80 CLOUDFLARENETUS United States 23->38 40 11 other IPs or domains 23->40 50 System process connects to network (likely due to code injection or exploit) 23->50 52 Performs DNS queries to domains with low reputation 23->52 54 Uses ipconfig to lookup or modify the Windows network settings 23->54 27 ipconfig.exe 23->27         started        signatures10 process11 signatures12 60 Modifies the context of a thread in another process (thread injection) 27->60 62 Maps a DLL or memory area into another process 27->62 64 Tries to detect virtualization through RDTSC time measurements 27->64 30 cmd.exe 1 27->30         started        process13 process14 32 conhost.exe 30->32         started       
Threat name:
Win64.Trojan.Leonem
Status:
Malicious
First seen:
2023-04-26 07:23:42 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
1
AV detection:
20 of 37 (54.05%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:ma94 rat spyware stealer trojan
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
Suspicious use of SetThreadContext
Blocklisted process makes network request
Formbook payload
Formbook
Unpacked files
SH256 hash:
49525525300554e0603a1ee766a78813c54ed100ca3292cf781d0223511beaef
MD5 hash:
96ed88269359efe666567b1a60583147
SHA1 hash:
59c4336cd94369972d7fe8d3293c2e791a879f4c
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:pdb_YARAify
Author:@wowabiy314
Description:PDB

File information


The table below shows additional information about this malware sample such as delivery method and external references.

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