MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d9da31806ce8b458ba014551c0335f98746c4b5abd5bbd9f1534fc83dc5ac4cf. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d9da31806ce8b458ba014551c0335f98746c4b5abd5bbd9f1534fc83dc5ac4cf
SHA3-384 hash: e241e1e573d460e3ace5651420790c479e7d8c90599b849095d414a07b7c1a7c7a3944abc247847799711f95ea01a93b
SHA1 hash: 1958e3bdb5a6b6e36b28031bffa86a080848ec4e
MD5 hash: edf2d08e8574f07a262838291ba64739
humanhash: ten-nine-sodium-stairway
File name:Purchase Order.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:732'672 bytes
First seen:2022-05-15 07:10:50 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:zjgjywxn9+njs23EfMn17sGDpjjoAQ8KIptTVAlsJ6:zjgjywS3+MnVsGDJjoq0
TLSH T152F4DF5133FC1F0AD67AA3F996B0525487B1392B65A6D34E0CD170EF1EA1F409B42BA3
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
269
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/270763/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed replace.exe update.exe
Link:
https://www.filescan.io/uploads/6280a7966b2a366ce41042f8/reports/d67bbf5c-ce46-41ba-a812-5fa04590f4aa/overview
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.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/6471a9ff-2247-42f6-bb81-f29e97ce5a81
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/994290
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for URL or domain
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
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 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
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: 626785 Sample: Purchase Order.exe Startdate: 15/05/2022 Architecture: WINDOWS Score: 100 31 www.zapcashtx.com 2->31 33 www.veminis.com 2->33 35 7 other IPs or domains 2->35 43 Snort IDS alert for network traffic 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 11 other signatures 2->49 11 Purchase Order.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\Purchase Order.exe.log, ASCII 11->29 dropped 61 Injects a PE file into a foreign processes 11->61 15 Purchase Order.exe 11->15         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 18 explorer.exe 15->18 injected process9 dnsIp10 37 www.savesporn.net 103.224.182.251, 49780, 80 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 18->37 39 www.sandizaixian.com 107.149.253.28, 49801, 80 PEGTECHINCUS United States 18->39 41 3 other IPs or domains 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 22 msdt.exe 18->22         started        signatures11 process12 signatures13 53 Self deletion via cmd delete 22->53 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d9da31806ce8b458ba014551c0335f98746c4b5abd5bbd9f1534fc83dc5ac4cf/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-15 07:11:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
42
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=3hnddadm5c2froqbivi4am27tb2gys22xvn33hyvgt6ihxc2ythq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:eatw loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220515-hzxqwadga4/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Deletes itself
Reads user/profile data of web browsers
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
110511c718ebf90acd7fd1c7c750fc4624b1147e8bd7035e95473fad61ee7fe6
MD5 hash:
f9175528e1bf882caecffad2cdc7cd68
SHA1 hash:
15d9b63d5c0d46ca685601b36b5b685faf6cb801
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/1b63858b-05d1-448e-a790-9c35246a6e34/
Parent samples :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 hash:
c206122a7336385be557580c114ac0923192f61bc8f77aa58c898135438399f9
MD5 hash:
6c9e813248a01432890c476813d210b8
SHA1 hash:
fd54aa3af58fc3a88cb3fd6753d773cd6c51b7f8
Link:
https://www.unpac.me/results/1b63858b-05d1-448e-a790-9c35246a6e34/
SH256 hash:
5d50db0d4e83cd5e1fcc615974906081894820380922e81aaee997c815ac88fb
MD5 hash:
9b12d2f87469f64a1a58380f02fd838b
SHA1 hash:
7703623317f07e755fd1e4cad199786af2d07952
Link:
https://www.unpac.me/results/1b63858b-05d1-448e-a790-9c35246a6e34/
SH256 hash:
b03c3a36a0b158fbe1a4598ddfcb7e74cdcafdc0c1637b146910207cd90aa82d
MD5 hash:
a55c1f7cf60c9b9e7a148c2326ff9e6f
SHA1 hash:
69ea7a3404abf062f73ad2c0558a4cdb94d147bc
Link:
https://www.unpac.me/results/1b63858b-05d1-448e-a790-9c35246a6e34/
SH256 hash:
d9da31806ce8b458ba014551c0335f98746c4b5abd5bbd9f1534fc83dc5ac4cf
MD5 hash:
edf2d08e8574f07a262838291ba64739
SHA1 hash:
1958e3bdb5a6b6e36b28031bffa86a080848ec4e
Link:
https://www.unpac.me/results/1b63858b-05d1-448e-a790-9c35246a6e34/
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/d9da31806ce8b458ba014551c0335f98746c4b5abd5bbd9f1534fc83dc5ac4cf

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe d9da31806ce8b458ba014551c0335f98746c4b5abd5bbd9f1534fc83dc5ac4cf

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/270763/

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