MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5a014c96f5a3582782e8f58c0eecaea1939d0fa531a7937f7c1b9a89f53333be. 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 3 File information Comments

SHA256 hash: 5a014c96f5a3582782e8f58c0eecaea1939d0fa531a7937f7c1b9a89f53333be
SHA3-384 hash: 26f098d781a8d80feab0e3f5f8fdd450c4b8a85384978f99a8c46e8d3b72adebe9455e4eb21a763abf97e8a9c4a228a0
SHA1 hash: 5e980bb339b8f1d7e208932e3b3e133cce6a3537
MD5 hash: d2b99de256265b70399811f5300654db
humanhash: oscar-zebra-thirteen-enemy
File name:nsKowmWZxFYJePU.exe
Download: download sample
Signature Formbook
File size:636'928 bytes
First seen:2023-12-02 16:44:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:xCtMJwIDGpeW5MH41bWbBx0AY/R/JNqkVupevoV5vQ5zMK15XLE:EMJ5GBMHQc2AY/R/JEku95vHYL
TLSH T1B0D40150339A8BA3E57F4BFF2490544453B2F42B6060F2188EEA40DE6B71761D9A1BA7
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 30e8ccd4716961e8 (15 x AgentTesla, 3 x Formbook, 1 x Loki)
Reporter abuse_ch
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
291
Origin country :
NL NL
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching cmd.exe command interpreter
Сreating synchronization primitives
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
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.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1352116 Sample: nsKowmWZxFYJePU.exe Startdate: 02/12/2023 Architecture: WINDOWS Score: 100 34 www.improvisable.xyz 2->34 36 www.zg9tywlubmftzw5ldziwmzc.com 2->36 38 7 other IPs or domains 2->38 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 50 9 other signatures 2->50 11 nsKowmWZxFYJePU.exe 3 2->11         started        signatures3 48 Performs DNS queries to domains with low reputation 34->48 process4 signatures5 58 Tries to detect virtualization through RDTSC time measurements 11->58 14 nsKowmWZxFYJePU.exe 11->14         started        process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 17 explorer.exe 6 1 14->17 injected process8 dnsIp9 28 www.tjornevent.info 46.30.213.152, 49731, 80 ONECOMDK Denmark 17->28 30 rtpslotugkoi88.com 162.0.232.103, 49728, 80 NAMECHEAP-NETUS Canada 17->30 32 shops.vipshopbuy.com 35.244.245.121, 49729, 80 GOOGLEUS United States 17->32 40 Uses netstat to query active network connections and open ports 17->40 21 NETSTAT.EXE 17->21         started        signatures10 process11 signatures12 52 Modifies the context of a thread in another process (thread injection) 21->52 54 Maps a DLL or memory area into another process 21->54 56 Tries to detect virtualization through RDTSC time measurements 21->56 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:
2023-12-01 07:11:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
23
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
agenttesla
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:sy11 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 UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
bc99dcc182eaf17394c34611c1aef4ad45c3079ae116c19caa17620d64c39f7c
MD5 hash:
84fe0cc42b4f30e7b6f58c92f9ad3d56
SHA1 hash:
d753cc7cc8e2927f9cde57fb67b5bceebd2f5fd2
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
SH256 hash:
0e8a5f6bd3e915b9d2fae9428730dc5017348d23b622bccbb1971e352052734b
MD5 hash:
56feb04fdc8b0453c62267ac204ed555
SHA1 hash:
7d41fb41cac90bea85cb6691a5945568115cbcbf
SH256 hash:
1e2c86593dfb43bbd7b652162f5a3531a164bbf09853fe3bf327fa71adadc7a7
MD5 hash:
84dd75e10a60a3cc8821cbce9c3464c1
SHA1 hash:
0841bede53dbec7a133f326e931867f5b8837c24
SH256 hash:
5a014c96f5a3582782e8f58c0eecaea1939d0fa531a7937f7c1b9a89f53333be
MD5 hash:
d2b99de256265b70399811f5300654db
SHA1 hash:
5e980bb339b8f1d7e208932e3b3e133cce6a3537
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:NET
Author:malware-lu
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Malspam

Formbook

Executable exe 5a014c96f5a3582782e8f58c0eecaea1939d0fa531a7937f7c1b9a89f53333be

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments