MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31a34d40d07e19268aaf8abeeae2716655969ebe2aaabfdc1b122318507c2e4e. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31a34d40d07e19268aaf8abeeae2716655969ebe2aaabfdc1b122318507c2e4e
SHA3-384 hash: a304c9e0c441bfc51e5e258bfbb4077bc16ead78763967930c379b0f524cf91e6f8e718911cbb80a49af160d5cbc746e
SHA1 hash: c5ed0e9d43e85ad1d9744cb85a6fd024c8ff0489
MD5 hash: a9b75fd18c81d49a39b6689377bf8db7
humanhash: autumn-autumn-ack-low
File name:Unpaid Invoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:213'504 bytes
First seen:2021-09-03 01:16:58 UTC
Last seen:2021-09-03 05:37:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash d746df0c6d243e11e2680c79fdf70b3e (3 x Formbook, 1 x AveMariaRAT, 1 x Loki)
ssdeep 6144:7wEfD/i1lkemVTtOASZNaEz2tEWu3FilTX:hmetOfNlWzr
Threatray 9'007 similar samples on MalwareBazaar
TLSH T19624F636B781F42EE482447DB919EFA55424393069A8C443F7C2AF1B38715EBDA25F0B
dhash icon 64f4d4d4ecf4d4d4 (82 x SnakeKeylogger, 34 x AgentTesla, 24 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
244
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Unpaid Invoice.exe
Verdict:
Malicious activity
Analysis date:
2021-09-03 01:18:58 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/73691c7e-7047-4b0e-9680-0e9bc1f8c877

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/184978/
Detection(s):
SecuriteInfo.com.Variant.Strictor.263166.5288.13801.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Launching a process
Launching cmd.exe command interpreter
Sending a UDP request
Unauthorized injection to a system process
Malware family:
Dimnie
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b54d4786-b183-41de-bbe6-149ca20db3ae
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/844457
Signature
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 476888 Sample: Unpaid Invoice.exe Startdate: 03/09/2021 Architecture: WINDOWS Score: 100 29 www.hwshen.com 2->29 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Multi AV Scanner detection for domain / URL 2->41 43 Found malware configuration 2->43 45 8 other signatures 2->45 11 Unpaid Invoice.exe 14 2->11         started        signatures3 process4 dnsIp5 37 img.neko.airforce 167.172.239.151, 443, 49705 DIGITALOCEAN-ASNUS United States 11->37 57 Maps a DLL or memory area into another process 11->57 15 Unpaid Invoice.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 15->18 injected process9 dnsIp10 31 www.thestripcitydeli.com 91.195.240.117, 49725, 80 SEDO-ASDE Germany 18->31 33 www.mgm2348543.com 91.195.240.94, 49724, 80 SEDO-ASDE Germany 18->33 35 12 other IPs or domains 18->35 47 System process connects to network (likely due to code injection or exploit) 18->47 22 mstsc.exe 18->22         started        signatures11 process12 signatures13 49 Self deletion via cmd delete 22->49 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/31a34d40d07e19268aaf8abeeae2716655969ebe2aaabfdc1b122318507c2e4e/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2021-09-03 00:43:21 UTC
AV detection:
15 of 43 (34.88%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ggru2qgqpymsncvprk7ovytrmzkznhv6fkvl7xa3cirrqud4fzha._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2ab54e46be8e8a1b7e66be9bed5492e2cb5c4112e548442e209954affc2dc374
Formbook
5c9a6aca5e4cc643a1c9d8f846bf0444577bf45ef94f5a2ac5012c810d277248
Formbook
8b4049ea3937e355ad9a551795afcb621fb56991ffc6f1db746861acfd7d6a46
Formbook
8c84e97b71aa8d34be8742cd4b6c0b86abdfb92379b099465eb751b0882efb23
Formbook
b09fdc39338aacafb7eb0163757d2b9863f78e5467af017ff4ad2f09e0e266a2
Formbook
bf31b12fa0ba232eb07eed27f004f9c34695ecc3eb4a5270b89f8abb519a059b
Formbook
d6fa87fb59dbf4de1d1d0af1062a41e6a9620b682ecdfc0eb91856e28b9ea1de
Formbook
+ 8'997 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:b6cu loader rat
Link:
https://tria.ge/reports/210903-bndejabhd5/
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
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.xn--marketingrevolucin-61b.com/b6cu/
Unpacked files
SH256 hash:
31a34d40d07e19268aaf8abeeae2716655969ebe2aaabfdc1b122318507c2e4e
MD5 hash:
a9b75fd18c81d49a39b6689377bf8db7
SHA1 hash:
c5ed0e9d43e85ad1d9744cb85a6fd024c8ff0489
Link:
https://www.unpac.me/results/13feeb79-cc81-42b9-a79c-773f34f50a17/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/31a34d40d07e19268aaf8abeeae2716655969ebe2aaabfdc1b122318507c2e4e

File information

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

Malspam

Formbook

Executable exe 31a34d40d07e19268aaf8abeeae2716655969ebe2aaabfdc1b122318507c2e4e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/184978/
  
URLhaus
https://urlhaus.abuse.ch/url/1586804/

Comments