MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b21bb739e3596952c4a2c91442e5e3e2785c0be27c59e452ff3d6f2565e318e6. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b21bb739e3596952c4a2c91442e5e3e2785c0be27c59e452ff3d6f2565e318e6
SHA3-384 hash: 93a720f76c50bf79c800fb4533b6cfbc69de0c7679e3d427acb6f42fb53f41ad0755e57cd705671fdb4826500d2cdd4e
SHA1 hash: e8a0c609480ba3253a5aed904b5bad6e47ad2ebb
MD5 hash: 36cc982cc5ac0f3ef0508df043108661
humanhash: oranges-butter-hot-virginia
File name:36cc982cc5ac0f3ef0508df043108661
Download: download sample
Signature Formbook
Create hunting rule
File size:487'840 bytes
First seen:2021-12-16 10:17:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla)
ssdeep 12288:0UPMspLxgccxYy5rMsxucIfIQRjppGZmtKlD0JjJws:lPMAg3xYyGsQDj3UZm8D0Jjz
Threatray 12'486 similar samples on MalwareBazaar
TLSH T166A42357B1C28867F9FE03B58673DBA7E3BBE6D546D1B90323404DF9AF31205A542482
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
182
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/214567/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a file
Unauthorized injection to a recently created process
DNS request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/2245/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/61bb12608541392eb4ea595f/reports/dcafdb3c-dd56-4b80-98df-4784d28966a9/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/f184706b-b081-4e7a-90d0-446fb7626a11
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/908435
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Performs DNS queries to domains with low reputation
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: 540912 Sample: XmuPEO5v6P Startdate: 16/12/2021 Architecture: WINDOWS Score: 100 32 www.dmc--llc.com 2->32 34 dmc--llc.com 2->34 44 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 3 other signatures 2->50 11 XmuPEO5v6P.exe 17 2->11         started        signatures3 process4 file5 30 C:\Users\user\AppData\...\dhjjijfeuy.dll, PE32 11->30 dropped 64 Tries to detect virtualization through RDTSC time measurements 11->64 66 Injects a PE file into a foreign processes 11->66 15 XmuPEO5v6P.exe 11->15         started        signatures6 process7 signatures8 68 Modifies the context of a thread in another process (thread injection) 15->68 70 Maps a DLL or memory area into another process 15->70 72 Sample uses process hollowing technique 15->72 74 Queues an APC in another process (thread injection) 15->74 18 explorer.exe 15->18 injected process9 dnsIp10 36 lavishbynovell.com 37.97.254.27, 49797, 80 TRANSIP-ASAmsterdamtheNetherlandsNL Netherlands 18->36 38 www.daysyou.com 176.223.142.187, 49790, 80 RACKRAYUABRakrejusLT Lithuania 18->38 40 8 other IPs or domains 18->40 52 System process connects to network (likely due to code injection or exploit) 18->52 54 Performs DNS queries to domains with low reputation 18->54 22 help.exe 12 18->22         started        signatures11 process12 dnsIp13 42 www.sosoon.store 22->42 56 Self deletion via cmd delete 22->56 58 Modifies the context of a thread in another process (thread injection) 22->58 60 Maps a DLL or memory area into another process 22->60 62 Tries to detect virtualization through RDTSC time measurements 22->62 26 cmd.exe 1 22->26         started        signatures14 process15 process16 28 conhost.exe 26->28         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b21bb739e3596952c4a2c91442e5e3e2785c0be27c59e452ff3d6f2565e318e6/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2021-12-16 10:18:10 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
060c2f164a53cf74817b9b2f176d770dbde8b1ef71fe5322abf9ae8197232b7d
Formbook
0e636b89393a1581a2e3f4b141c9886bed9c77969569605cdb44b78d94127802
Formbook
3c9984e534636c34f7a22ccbbfb1c06baa5a6f16883eb77a65ac615dffa24f16
Formbook
41de1c603509906c3ddcb2550617c980ba3dd192048a52b449e3894d94e1bad5
Formbook
43d01d2eb5232707d644d1ea624c347b98220adbbdb7a8bd625814a5b971dd2d
Formbook
6ffe756ce71f1457d7dd480357f3545f123b750fc4bf30683b59887d491948a7
Formbook
a48338ad920df299184caed650b6105804c67269494766bdb8651f4d288b8a0b
Formbook
b94f37134c31d499c2e8e3d952cb81c1453d211d1ecdfc2eaa32cc8f6b5c5604
Formbook
cdbd429589993cd6933f05398fcb85c422405abd08d73ab35b640da0acf404a8
Formbook
dcd2e00fc2a47d732fd3d0d79fd224caac8bee02053a1b02ba4e51e022a949f9
Formbook
+ 12'476 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:fqiq loader rat
Link:
https://tria.ge/reports/211216-mbyqgscedq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Xloader Payload
Xloader
Unpacked files
SH256 hash:
b21bb739e3596952c4a2c91442e5e3e2785c0be27c59e452ff3d6f2565e318e6
MD5 hash:
36cc982cc5ac0f3ef0508df043108661
SHA1 hash:
e8a0c609480ba3253a5aed904b5bad6e47ad2ebb
Link:
https://www.unpac.me/results/2497a126-a5e5-45a9-9f1b-fa168c824e5d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.33
Link:
https://yomi.yoroi.company/submissions/b21bb739e3596952c4a2c91442e5e3e2785c0be27c59e452ff3d6f2565e318e6

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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: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.

Web download

Formbook

Executable exe b21bb739e3596952c4a2c91442e5e3e2785c0be27c59e452ff3d6f2565e318e6

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1890075/
Cape
Cape
https://www.capesandbox.com/analysis/214567/

Comments


Avatar
zbet commented on 2021-12-16 10:17:10 UTC

url : hxxp://103.145.254.163/____20388__0055/vbc.exe