MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31141d17d3796c0225ad5cb5b2e93169f3435e5274ace903fbe046a46b99028f. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: 31141d17d3796c0225ad5cb5b2e93169f3435e5274ace903fbe046a46b99028f
SHA3-384 hash: 093d3063d3111bf2b43252f5120e014a4f7eb5a290346c95cdcb6a7e11c326775881431819fb824275cb6de0eece8cb2
SHA1 hash: 96a268ae7b353c88e60da7f3d27cb6c44d41cc97
MD5 hash: 50cd1211c8ef07f043c5e68c9f2853a7
humanhash: venus-illinois-missouri-massachusetts
File name:Purchase Order# 210145.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:705'536 bytes
First seen:2021-08-30 06:16:53 UTC
Last seen:2021-08-30 14:15:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:+zCphL41+SYw8FMzmsMj1YYRhVr+mxbO2:+zC7L4+STavj1YYRj+mxbO
Threatray 8'687 similar samples on MalwareBazaar
TLSH T1C2E40B7F19BDA2279175C6F58BE38827F0108B6F3110696476D347264322A7AB4F336E
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
4
# of downloads :
161
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Purchase Order# 210145.exe
Verdict:
Malicious activity
Analysis date:
2021-08-30 06:27:37 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/bf96cd96-9f1e-4036-95ee-23ba5cd32d83

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/183468/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9faa3c9f-31ca-4df3-b1af-439ff50c2ff4
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/842131
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 474562 Sample: Purchase Order# 210145.exe Startdate: 31/08/2021 Architecture: WINDOWS Score: 100 33 www.enciperforms.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 9 other signatures 2->47 11 Purchase Order# 210145.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\...\Purchase Order# 210145.exe.log, ASCII 11->31 dropped 59 Injects a PE file into a foreign processes 11->59 15 Purchase Order# 210145.exe 11->15         started        18 Purchase Order# 210145.exe 11->18         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 20 explorer.exe 15->20 injected process9 dnsIp10 35 www.buytwittersfollowers.net 166.88.19.181, 49718, 80 EGIHOSTINGUS United States 20->35 37 www.localoffersdirect.com 161.35.120.20, 49726, 80 DIGITALOCEAN-ASNUS United States 20->37 39 10 other IPs or domains 20->39 49 System process connects to network (likely due to code injection or exploit) 20->49 24 mstsc.exe 20->24         started        signatures11 process12 signatures13 51 Self deletion via cmd delete 24->51 53 Modifies the context of a thread in another process (thread injection) 24->53 55 Maps a DLL or memory area into another process 24->55 57 Tries to detect virtualization through RDTSC time measurements 24->57 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/31141d17d3796c0225ad5cb5b2e93169f3435e5274ace903fbe046a46b99028f/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-08-30 06:04:53 UTC
AV detection:
11 of 45 (24.44%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gekb2f6tpfwaejnnls23f2jrnhzugxssoswosa734bdki24zakhq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
21583b5c850ded9f371f4bf0c64a919c3d6411b3945b5e967c5f1a999eef42e0
Formbook
55dc099e790b76a62f56ef105ca53205ea69d9f4027a93554b03d573f112d643
Formbook
6bb8fa14bf9c650a67541ffedff2e3f1c055454b90489653c95aa39284d7eb92
Formbook
6fac6e1f7f8cdd8cec52b2dd7a23fd434084c7d12ef0f04deaa52794d3612ef7
Formbook
9914c8ad9ea0318f57214c6eb2f2e3f891b71ba054a9de071432ec92eb6bfe0d
Formbook
a086821049463b0bfc414cb3763c4f82688182d2d018ae5c9cd472f59f9e36ff
Formbook
c8e7193944ede931e488cd5e85554447e4da772455bad4a8e8b40840d9a5f8e9
Formbook
cf993c713cfe3b22bd4978530f420e2dc54c38d106ad5fc5a9aacb1e377b81e2
Formbook
d6fa87fb59dbf4de1d1d0af1062a41e6a9620b682ecdfc0eb91856e28b9ea1de
Formbook
+ 8'677 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:kmb0 loader rat suricata
Link:
https://tria.ge/reports/210830-p42gzhcl3x/
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
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.2923grand.com/kmb0/
Unpacked files
SH256 hash:
da269d34aaa40e5c939317abb0745b73fecc69d7f7f6c11b47a0e5c0398d5ae0
MD5 hash:
fd652a4b87f8f37c284c7e7c689a9893
SHA1 hash:
e39253de8427e9fd5a5656c4212e57723a1cf941
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/20430047-198e-40c4-90f9-02b41c9ce51d/
Parent samples :
21583b5c850ded9f371f4bf0c64a919c3d6411b3945b5e967c5f1a999eef42e0
55dc099e790b76a62f56ef105ca53205ea69d9f4027a93554b03d573f112d643
31141d17d3796c0225ad5cb5b2e93169f3435e5274ace903fbe046a46b99028f
ea0398e9c644309652d60f4261c03ba7aa64bf8fddd4960c7e65fcb732af4530
SH256 hash:
c0ee1071e444f415f8b62856a0896f3b22e563f1bb4f03d14142583efe49a565
MD5 hash:
29db2e114b88ae1f6a00c9aa71690043
SHA1 hash:
ec82db71443556a5b320357b0b8b09e70ec1db9c
Link:
https://www.unpac.me/results/20430047-198e-40c4-90f9-02b41c9ce51d/
SH256 hash:
ad71849a63d06703c9a903a263226bfa5342b75ff3fa1799bc07b9abcbe3d033
MD5 hash:
8206df88af0be99db0fd08e63491bd96
SHA1 hash:
e423629a6215c82fd2c976c728955fd05ba27c86
Link:
https://www.unpac.me/results/20430047-198e-40c4-90f9-02b41c9ce51d/
SH256 hash:
31141d17d3796c0225ad5cb5b2e93169f3435e5274ace903fbe046a46b99028f
MD5 hash:
50cd1211c8ef07f043c5e68c9f2853a7
SHA1 hash:
96a268ae7b353c88e60da7f3d27cb6c44d41cc97
Link:
https://www.unpac.me/results/20430047-198e-40c4-90f9-02b41c9ce51d/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/31141d17d379/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/31141d17d3796c0225ad5cb5b2e93169f3435e5274ace903fbe046a46b99028f

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:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
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 31141d17d3796c0225ad5cb5b2e93169f3435e5274ace903fbe046a46b99028f

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/183468/

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