MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8e405b6451c62462b5df1a0490175f4b9712ee1b1ab25a52f7e3a1f736400439. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8e405b6451c62462b5df1a0490175f4b9712ee1b1ab25a52f7e3a1f736400439
SHA3-384 hash: b459493e04c91ea0727ca979fc76a53a379dca13549b7712ae699bd686bbfbd0b8a798ded967f2ff6cb44f6164e02000
SHA1 hash: c735848eb56e7fbfe229918de1e042c238edb1a8
MD5 hash: 1a84232e14194f3ac154f8711d6f683e
humanhash: cardinal-uniform-spaghetti-arkansas
File name:Purchase Order.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:528'896 bytes
First seen:2021-11-24 10:50:42 UTC
Last seen:2021-11-24 14:32:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:EAzTuIWYdamg7m1J6ZZk7xYqATZZdrFtg/Csd:9Txiecu7GqAVnS
Threatray 11'730 similar samples on MalwareBazaar
TLSH T108B4F22436A0525AC6A53EF908A1118053727DA12A04D3DE6CFD774E6D327AFCF817AF
File icon (PE):PE icon
dhash icon 174f4559191b1b13 (81 x AgentTesla, 68 x Formbook, 34 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
3
# of downloads :
166
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c735848eb56e7fbfe229918de1e042c238edb1a8
Verdict:
Malicious activity
Analysis date:
2021-11-24 10:18:55 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1a90d9ef-d42f-4f4f-829c-6d996e1b3ffe

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Detection(s):
SecuriteInfo.com.Variant.Strictor.262459.24102.12481.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed strictor
Link:
https://www.filescan.io/uploads/619e1918b71ceed4152e5e6a/reports/b2a0a84a-5eb8-4fbd-b682-324e8bc8ebc1/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:
Malicious
Link:
https://analyze.intezer.com/analyses/b28a44c7-d750-4197-853f-0d8c1ab0e48d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/895299
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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 dropped file
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
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
Sigma detected: Suspicius Add Task From User AppData Temp
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 527775 Sample: Purchase Order.exe Startdate: 24/11/2021 Architecture: WINDOWS Score: 100 45 www.asiapubz-hk.com 2->45 47 www.lionheartcreativestudios.com 2->47 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 Antivirus detection for URL or domain 2->59 61 16 other signatures 2->61 11 Purchase Order.exe 7 2->11         started        signatures3 process4 file5 39 C:\Users\user\AppData\...\UcvvwVHjSby.exe, PE32 11->39 dropped 41 C:\Users\user\AppData\Local\...\tmp8135.tmp, XML 11->41 dropped 43 C:\Users\user\...\Purchase Order.exe.log, ASCII 11->43 dropped 65 Adds a directory exclusion to Windows Defender 11->65 67 Injects a PE file into a foreign processes 11->67 15 Purchase Order.exe 11->15         started        18 powershell.exe 22 11->18         started        20 schtasks.exe 1 11->20         started        signatures6 process7 signatures8 77 Modifies the context of a thread in another process (thread injection) 15->77 79 Maps a DLL or memory area into another process 15->79 81 Sample uses process hollowing technique 15->81 83 Queues an APC in another process (thread injection) 15->83 22 explorer.exe 15->22 injected 26 conhost.exe 18->26         started        28 conhost.exe 20->28         started        process9 dnsIp10 49 trademarkitforyourself.com 15.197.142.173, 49814, 80 TANDEMUS United States 22->49 51 oiltoolshub.com 109.106.251.86, 49816, 80 NETNET-ASRS Serbia 22->51 53 5 other IPs or domains 22->53 63 System process connects to network (likely due to code injection or exploit) 22->63 30 svchost.exe 22->30         started        33 autofmt.exe 22->33         started        signatures11 process12 signatures13 69 Self deletion via cmd delete 30->69 71 Modifies the context of a thread in another process (thread injection) 30->71 73 Maps a DLL or memory area into another process 30->73 75 Tries to detect virtualization through RDTSC time measurements 30->75 35 cmd.exe 1 30->35         started        process14 process15 37 conhost.exe 35->37         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8e405b6451c62462b5df1a0490175f4b9712ee1b1ab25a52f7e3a1f736400439/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2021-11-24 06:21:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rzafwzcryysgfno7dicjaf27jolrf3q3dkzfuuxx4oq7onsaaq4q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1aac9a73533b5745a863e565e556ecc624619b3cecb917c9e8aee7b141976bb2
Formbook
4cef73e83df4c6bb091a157a975a38a2c50be436649414a2ac7a55bc62e67da0
Formbook
4f2852e38ccd6fa9cce1580220421fc57c80c4978ab11f54f94927974e5ae2a5
Formbook
5ce12b1abf4c0139a9022d549dafff88c441fbc7127d240cc78ecbd0608d2328
Formbook
5f474b40c8bd056549cbf8b574f80bf8198d53f29bdb3ee5eb21db0700b71f7c
Formbook
99cdf3421923232c160c5075af3bf8620df65bd59cf99cc341f17a58e1eeb4f2
Formbook
a8c5b384b32f2a117fda2336ec2692bfc44e37a56327217454b63eb28ec0701b
Formbook
cae28876b4d13e974995f686d84fdb7e48b4eb583e76cdd53f393dc8921faa63
Formbook
f0748cd86f2648c4ff23611f87661ba89045039966eb9595c2fb4d046249e1f2
Formbook
f5447c22561c0692e385ef3c0ef0ed84d4ce35042f0839bddd7de9aeaa1f777a
Formbook
+ 11'720 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:ea0r loader rat
Link:
https://tria.ge/reports/211124-mxtnnaffc8/
Behaviour
Creates scheduled task(s)
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.asiapubz-hk.com/ea0r/
Unpacked files
SH256 hash:
98af1669d18e8826220ac4c7d86a7cad601ca20317384cf5e382a918ef32f91f
MD5 hash:
29037685b50e794fc1ca765517b7f669
SHA1 hash:
e5199699b551530787b406e6c84c4adc75c7c2f1
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/fd2b376e-da5d-48c5-8ce6-856da0ffb398/
Parent samples :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 hash:
302ac54c94e8bdb12b7fdaeef76e2b936e0294ea5b1ced38c6da51ef50c3067e
MD5 hash:
d1a58ca8f82c480763bfa3205e80b770
SHA1 hash:
7b23287d165b2dae07ead2625bd4e1e525d27a1b
Link:
https://www.unpac.me/results/fd2b376e-da5d-48c5-8ce6-856da0ffb398/
SH256 hash:
601c6239bce7722df08f2af2712aae1253d4c80ce81c9ae2146eb75004983a22
MD5 hash:
2596fce40946f336ac9dfdebe86d0ce8
SHA1 hash:
06b576b661e55a1fc11a2818014f4caeab4ee25c
Link:
https://www.unpac.me/results/fd2b376e-da5d-48c5-8ce6-856da0ffb398/
SH256 hash:
8e405b6451c62462b5df1a0490175f4b9712ee1b1ab25a52f7e3a1f736400439
MD5 hash:
1a84232e14194f3ac154f8711d6f683e
SHA1 hash:
c735848eb56e7fbfe229918de1e042c238edb1a8
Link:
https://www.unpac.me/results/fd2b376e-da5d-48c5-8ce6-856da0ffb398/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/8e405b6451c6/report/overview.html
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/8e405b6451c62462b5df1a0490175f4b9712ee1b1ab25a52f7e3a1f736400439

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
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 8e405b6451c62462b5df1a0490175f4b9712ee1b1ab25a52f7e3a1f736400439

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/208921/

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