MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c19dda3e71d3e8166c0d106f10eb9fc58036286e50c0cd31dd4efd8a1bc82e7e. 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: 10


Intelligence 10 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c19dda3e71d3e8166c0d106f10eb9fc58036286e50c0cd31dd4efd8a1bc82e7e
SHA3-384 hash: b5032adea327be18cfd032fc8cecbd9247c7786872ee36ebf7bf6075777a619588cf0fd4f32a49fca64c7627e8e11b5e
SHA1 hash: d4fbcae7939e66de68f691d215843e0b2dc99509
MD5 hash: e6658632d91b3b74f74348ed5ab1e0f8
humanhash: two-salami-nineteen-island
File name:Purchase Order.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:898'048 bytes
First seen:2020-10-21 13:07:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 3072:QFHqTbiSBAZJcgQu9gSBWKimURXQNWy21QrlLQ9BFMdC:
Threatray 2'603 similar samples on MalwareBazaar
TLSH 9015B93CADD5227756BBD6BACAF559CBF911754331266C0E90DB03820A03BA77EC211E
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: mg2.eee.tw
Sending IP: 103.17.10.232
From: fae@atom-tec.com
Subject: RFQ # Q20182401 // ORDER_N ° 10014 // New_Suppliers_Ord er / [OCT-DEC]
Attachment: Purchase Order.rar (contains "Purchase Order.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
70
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/74134/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/505868
Signature
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Initial sample is a PE file and has a suspicious name
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
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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 301988 Sample: Purchase Order.exe Startdate: 21/10/2020 Architecture: WINDOWS Score: 100 37 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 9 other signatures 2->43 10 Purchase Order.exe 1 2->10         started        process3 file4 27 C:\Users\user\...\Purchase Order.exe.log, ASCII 10->27 dropped 13 Purchase Order.exe 10->13         started        process5 signatures6 51 Modifies the context of a thread in another process (thread injection) 13->51 53 Maps a DLL or memory area into another process 13->53 55 Sample uses process hollowing technique 13->55 57 Queues an APC in another process (thread injection) 13->57 16 explorer.exe 13->16 injected process7 dnsIp8 29 texascommunitynewsnetwork.com 34.102.136.180, 49730, 49731, 80 GOOGLEUS United States 16->29 31 www.texascommunitynewsnetwork.com 16->31 33 2 other IPs or domains 16->33 35 System process connects to network (likely due to code injection or exploit) 16->35 20 cmd.exe 16->20         started        signatures9 process10 signatures11 45 Modifies the context of a thread in another process (thread injection) 20->45 47 Maps a DLL or memory area into another process 20->47 49 Tries to detect virtualization through RDTSC time measurements 20->49 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c19dda3e71d3e8166c0d106f10eb9fc58036286e50c0cd31dd4efd8a1bc82e7e/
Threat name:
ByteCode-MSIL.Trojan.Variadic
Create hunting rule
Status:
Malicious
First seen:
2020-10-21 12:29:36 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ygo5uptr2pubm3ancbxrb247ywadmkdokdam2mo5j36yug6ifz7a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0538ad6e3f92ea13a5a3dadb18e807ce26097bbfd2f473e873a514b6dbbe8f5d
Formbook
1ebd02f5868d1d9320e811ab81f392e6b2e4d8c9daf8e4d3b254d7aa054db784
Formbook
4636055b5170ddb11d94a466c0c93e57ad40caf68a036274bdf2ded620a22bce
Formbook
5943e0f810c211de134f7225c22c1d453da8acb0b6774b86b60eeb084b61a37a
Formbook
77e828d113038623ccfca7e111b60675fd36ea404545f8ce828d7f8505244f0d
Formbook
7e896ee66c233b20d802b6c6201b64ff0dfaad30f3d694842f1d7d5d5f5cdb3a
Formbook
805a071c8e38fca4e3602881ff33ac7a2afba65bb61cd7adda873950bf2779cb
Formbook
8df5752017d7f083ddad62b8423ea7109c830dbcdca3fff0ee7aee8d149fdeda
Formbook
be061510b405ee3bf30bd3c0b3d40e97ec35f64ec1699dccf83c4ad2ff097dfd
Formbook
c1a6e1cdb47df8fdaea4c501aeef551c5608735a82078d2b32229570cb1c44af
Formbook
+ 2'593 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/201021-kaq68v1ye2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.waiftx.com/tmc8/
Unpacked files
SH256 hash:
c19dda3e71d3e8166c0d106f10eb9fc58036286e50c0cd31dd4efd8a1bc82e7e
MD5 hash:
e6658632d91b3b74f74348ed5ab1e0f8
SHA1 hash:
d4fbcae7939e66de68f691d215843e0b2dc99509
Link:
https://www.unpac.me/results/4a2ee824-40b2-4cb7-98a1-61d430e049ff/
SH256 hash:
2df2019d23352ef4665589369f3098f40d3eb92fee642faa10256edc66a28472
MD5 hash:
863527e8d21f9bcb387369e5d409126c
SHA1 hash:
951c7c2be72aa980fabce85e9f657a3132af40eb
Link:
https://www.unpac.me/results/4a2ee824-40b2-4cb7-98a1-61d430e049ff/
SH256 hash:
98bd20bda777453b764fd56420c96b91cf76d82701ce61dfaa3b06547300d339
MD5 hash:
9f029dd5638f5b1aa5dead495793f0a4
SHA1 hash:
d81f21d74dc876c668b6a05372cdccbb4f1f76e8
Link:
https://www.unpac.me/results/4a2ee824-40b2-4cb7-98a1-61d430e049ff/
SH256 hash:
d675b6cd32c5549826884041cf1a318af9110d0587dd845bb8c952854411670c
MD5 hash:
fcd70d5ed52399df3a1a80417b2155c4
SHA1 hash:
7e44f38c372a00c887d0dbbccfa8c04a733311dd
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/4a2ee824-40b2-4cb7-98a1-61d430e049ff/
Parent samples :
7e896ee66c233b20d802b6c6201b64ff0dfaad30f3d694842f1d7d5d5f5cdb3a
1ebd02f5868d1d9320e811ab81f392e6b2e4d8c9daf8e4d3b254d7aa054db784
c19dda3e71d3e8166c0d106f10eb9fc58036286e50c0cd31dd4efd8a1bc82e7e
6eb2ce986b19563b33a0c241aa33feb4e12ad3427ee3dbfb99f530dba3d8dea7
be68a437bfdced2711715965531cd0951f433f2c689b09bf265fc6e1b9c1c8e8
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/c19dda3e71d3e8166c0d106f10eb9fc58036286e50c0cd31dd4efd8a1bc82e7e

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Malspam

Formbook

rar 557dda72d65c4c126a2442cfb3dc831c199fc4883b8c0c764b3d52f68769694f

Formbook

Executable exe c19dda3e71d3e8166c0d106f10eb9fc58036286e50c0cd31dd4efd8a1bc82e7e

(this sample)

  
Dropped by
MD5 342e94502dc58950ab5f5b6e31e8bf2d
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/74134/
  
Dropped by
SHA256 557dda72d65c4c126a2442cfb3dc831c199fc4883b8c0c764b3d52f68769694f

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