MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 333a258f45e7a8baaab72b1539859a00bca7309a8d641490329184977090b540. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 333a258f45e7a8baaab72b1539859a00bca7309a8d641490329184977090b540
SHA3-384 hash: 1a1ad229e16749c91cee1dcfc838de1bd07aa90ef4182301e78da790c4b9f7f9565bd5591d1d3a4c45963183f270835e
SHA1 hash: 131206e76dceb761ee9417ad1ec07292dc0cdf53
MD5 hash: 15cead52848883dce888d9a5832cfdd5
humanhash: beer-angel-tennis-orange
File name:Quotation.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:509'440 bytes
First seen:2020-10-15 12:55:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:MTbHDdiSG0ahtIQs7LHdQqYkNs4tZeIL:MTrDxahtz2LHHNscYo
Threatray 2'707 similar samples on MalwareBazaar
TLSH D8B4AE727992D93FCE6A07751C2D84C5FAB612D63B908B0D729E4F4CCE05B6BA703246
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: apioptimum.live
Sending IP: 185.144.30.211
From: 美国代理商<Salesagent_1765@apioptimum.live>
Subject: 回复：查询/报价请求
Attachment: QUOTATION.xlsx.img (contains "Quotation.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/71394/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a window
Creating a file
Creating a process from a recently created file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/492453
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Initial sample is a PE file and has a suspicious name
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 298723 Sample: Quotation.exe Startdate: 15/10/2020 Architecture: WINDOWS Score: 100 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus / Scanner detection for submitted sample 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 5 other signatures 2->44 10 Quotation.exe 8 2->10         started        process3 file4 30 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->30 dropped 32 C:\Users\user\AppData\...\Quotation.exe.log, ASCII 10->32 dropped 34 C:\Users\user\AppData\Local\Temp\...\Fdf.dll, PE32 10->34 dropped 36 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->36 dropped 52 Writes to foreign memory regions 10->52 54 Allocates memory in foreign processes 10->54 56 Tries to detect virtualization through RDTSC time measurements 10->56 58 Injects a PE file into a foreign processes 10->58 14 AddInProcess32.exe 10->14         started        signatures5 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 2 other signatures 14->66 17 explorer.exe 14->17 injected process8 process9 19 mstsc.exe 17->19         started        22 autochk.exe 17->22         started        24 autoconv.exe 17->24         started        signatures10 46 Modifies the context of a thread in another process (thread injection) 19->46 48 Maps a DLL or memory area into another process 19->48 50 Tries to detect virtualization through RDTSC time measurements 19->50 26 cmd.exe 1 19->26         started        process11 process12 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/333a258f45e7a8baaab72b1539859a00bca7309a8d641490329184977090b540/
Threat name:
ByteCode-MSIL.Trojan.Malrep
Create hunting rule
Status:
Malicious
First seen:
2020-10-15 10:04:02 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gm5cld2f46ulvkvxfmkttbm2ac6kome2rvsbjebssgcjo4eqwvaa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0444972f4976d21a707c947f936ee857584f0dee44e795c6dc7cb86d9b28eddd
Formbook
306dc076ebd63fe8d969a99984470c480737e86eba1fb55ebe1ef49a8b987565
Formbook
3e8e7c9ebb8ae4bbb723e1974f176f8cb82ec0fb4e1890ee1f4feed08ae76058
Formbook
767fc756f86db0b4de57b4ec14964f24af0e47eb23ba7fa1df6378bcf9986947
Formbook
82ec33dd4f26eab172d8a0fc536751d12153a3f7175351da311a7059217c670e
Formbook
b1e02307e81e96b22e56e5ab30d8bbed318da83a077952449a2f832916d7c8d1
Formbook
bd959929f72ad78adfc193a1b6f3951a41cb2fd273e97680ca41030c7c4ad271
Formbook
bdad93534a202f7d3c2f102dc39093fa12a32f5de82c76a5fb41a94e1748d99e
Formbook
d9600ffc9406d71c60b7eb036248230510c3b971a1de563ca7b8b57e822f7879
Formbook
e85f434810652692f3e0a0738d9156899afcbd2bed42a6f328f0092d72a1db34
Formbook
+ 2'697 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201015-j4whjvq7aj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.xqxsm.com/mc5/
Unpacked files
SH256 hash:
333a258f45e7a8baaab72b1539859a00bca7309a8d641490329184977090b540
MD5 hash:
15cead52848883dce888d9a5832cfdd5
SHA1 hash:
131206e76dceb761ee9417ad1ec07292dc0cdf53
Link:
https://www.unpac.me/results/181fdfb9-6baa-4e09-9d87-63930fc2d0a3/
SH256 hash:
39c99a9539b034719e14fbc488c2268a2e935dbd0f1162badf898dbdda4eb12d
MD5 hash:
969c10802f9afcd802e938fb49593827
SHA1 hash:
a02f21f1031be8da4bbeb977a0a02a8bb602da40
Link:
https://www.unpac.me/results/181fdfb9-6baa-4e09-9d87-63930fc2d0a3/
SH256 hash:
19d9922060be89a70b76e5c0056e751f1baa5d41819235c92cf4f5d7668e1267
MD5 hash:
811864a0b06c529af894a7fec6ddbf47
SHA1 hash:
d35b82933eb06a6ec60e8cbbdb65eb6cdcaeb6d2
Link:
https://www.unpac.me/results/181fdfb9-6baa-4e09-9d87-63930fc2d0a3/
Parent samples :
afa2f55e149097f9b250142bbfd94d9d56d10649c96adb079fdb0dfdac7c6660
69e2ae11e1b5cbe120bf02301191a1cf05e87fc09b09d63bd782abbf3615d05d
0b778873c94f6bc89a40294c0e85a38ab82509260cd2a2e8b73d00c5c90e8757
7ddfa6f44a60f4b894321f6977f8121cfb371c3c61ac872c58ba61fd5ee13deb
SH256 hash:
f8bee4108a324df32ad5a2ebafa6b7f411402a21e2598cf9db66486970f80fdd
MD5 hash:
a92da98ff6f5ae608503d074617bcc2a
SHA1 hash:
d3eafcccca011bb3a7a5ae52dd9704ceafcde472
Link:
https://www.unpac.me/results/181fdfb9-6baa-4e09-9d87-63930fc2d0a3/
SH256 hash:
1fd52a5183e1ef1f66b4d29f85738d5b729cf33ffa45369ff7b39551bd7e7d26
MD5 hash:
d28761c25a189606c4e354bf0795c43e
SHA1 hash:
21bcf332c6897b19443ca79dcb51ec2b96151580
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/181fdfb9-6baa-4e09-9d87-63930fc2d0a3/
Parent samples :
82ec33dd4f26eab172d8a0fc536751d12153a3f7175351da311a7059217c670e
333a258f45e7a8baaab72b1539859a00bca7309a8d641490329184977090b540
f89ea3eb5f2720e6194642d92ef8de19d90dcb0cf12c64bc42dd9aba0edfeb85
16a4855bceb4df02e0478cd72972a6e7f144f2278fedb239c2cb696cf6bf7199
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/333a258f45e7a8baaab72b1539859a00bca7309a8d641490329184977090b540

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

Formbook

img 9a06cbc5041aa572d5741da751682ed7cfd4f9dfb8a389e5851fd939796ee82c

Formbook

Executable exe 333a258f45e7a8baaab72b1539859a00bca7309a8d641490329184977090b540

(this sample)

  
Dropped by
MD5 8d45a2115740357ec939f221b4c6f1ba
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/71394/
  
Dropped by
SHA256 9a06cbc5041aa572d5741da751682ed7cfd4f9dfb8a389e5851fd939796ee82c

Comments