MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 432b45a1dc6f64167c65b55c1e2333f4884b1bc65952f5b3202e7317ac5d54ab. 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 5 File information Comments

SHA256 hash: 432b45a1dc6f64167c65b55c1e2333f4884b1bc65952f5b3202e7317ac5d54ab
SHA3-384 hash: 0d3c112b20b45d8a06f0289bb31443d95b3b7c059cddcb451a3c674e758d64d25f48cfad8ad88831c3f768cf64c2b6d1
SHA1 hash: ecb09db7f5dd99e4ef47f1c8c8a323a2729b2ea1
MD5 hash: a0c2389e932c9a010ccd9285cfe0bdb8
humanhash: fourteen-artist-georgia-indigo
File name:transfer 2023.11.29.exe
Download: download sample
Signature Formbook
File size:608'768 bytes
First seen:2023-11-30 12:16:27 UTC
Last seen:2023-11-30 14:27:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:BHDeQZIhKg5rXaM20+wyDxjmVLLad3C6ZnU6Mt9StGGThN/bHopox:MQmrP+wydsahntMbK7jHe
TLSH T181D40204A6BE2F26D87A8BF658B611408BF4F57B2231E79D4ED131DA09A1F440F82F57
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)
Reporter Anonymous
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
303
Origin country :
CH CH
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
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 potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for domain / URL
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
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: 1350503 Sample: transfer_2023.11.29.exe Startdate: 30/11/2023 Architecture: WINDOWS Score: 100 34 www.kixvop.xyz 2->34 36 www.zg9tywlubmftzw5ldzi0otk.com 2->36 38 9 other IPs or domains 2->38 42 Snort IDS alert for network traffic 2->42 44 Multi AV Scanner detection for domain / URL 2->44 46 Found malware configuration 2->46 50 8 other signatures 2->50 11 transfer_2023.11.29.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 60 Injects a PE file into a foreign processes 11->60 14 transfer_2023.11.29.exe 11->14         started        process6 signatures7 62 Modifies the context of a thread in another process (thread injection) 14->62 64 Maps a DLL or memory area into another process 14->64 66 Sample uses process hollowing technique 14->66 68 Queues an APC in another process (thread injection) 14->68 17 explorer.exe 5 1 14->17 injected process8 dnsIp9 28 www.303bxg303.com 107.149.180.240, 49745, 80 PEGTECHINCUS United States 17->28 30 www.hunter85.com 37.19.207.34, 49741, 80 INTERTELECOMUA Ukraine 17->30 32 5 other IPs or domains 17->32 40 System process connects to network (likely due to code injection or exploit) 17->40 21 msdt.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:
2023-11-29 17:10:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
19 of 23 (82.61%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:ui23 rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
dc2a31ebcef7e1b02ef0b2237da0e126dfebaa6a6336f829c0194b89793e239b
MD5 hash:
3d9dd0ed4f6deb6ad320d84fa5a40542
SHA1 hash:
f2daf79f4bfd1118856e13e1487c99259415d39e
SH256 hash:
e88a0ecd8a546b81993a01d5b181a76b677fd22489b221456dbce358202947e1
MD5 hash:
384cfbef6fbbdbead98fc4cca80b3366
SHA1 hash:
850cb66538638faaf0b02be400c68e6de7ec873c
SH256 hash:
0d1e8471b62c2f86c2c41c379c439dfaf3e8a5ab74540a898b8c98a91d53834d
MD5 hash:
3087df35f0c30cb941d068891b5cea3a
SHA1 hash:
39d0fe503775d8f4ca316983fb075e46e213ef59
SH256 hash:
432b45a1dc6f64167c65b55c1e2333f4884b1bc65952f5b3202e7317ac5d54ab
MD5 hash:
a0c2389e932c9a010ccd9285cfe0bdb8
SHA1 hash:
ecb09db7f5dd99e4ef47f1c8c8a323a2729b2ea1
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:AgentTesla_DIFF_Common_Strings_01
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
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 432b45a1dc6f64167c65b55c1e2333f4884b1bc65952f5b3202e7317ac5d54ab

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments