MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3884e83634368ece061a97583d17bfdfe4247af9f8d507f4b594eaabf499e1c9. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3884e83634368ece061a97583d17bfdfe4247af9f8d507f4b594eaabf499e1c9
SHA3-384 hash: d26e8c6888c6f6573bcb50239cd71a571f3d0b9878e0eb66ddd6feed6b4179fb53c985a17f521c2088825bac9a1cddc6
SHA1 hash: c29bd879d14566f0aeae3e2ba0c107c5e1af7d19
MD5 hash: 4a3d3b6414d0c55e345416a8acde46a8
humanhash: cardinal-network-nitrogen-charlie
File name:4a3d3b6414d0c55e345416a8acde46a8
Download: download sample
Signature Formbook
Create hunting rule
File size:480'768 bytes
First seen:2021-09-18 17:42:20 UTC
Last seen:Never
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:jWHCM2K4Cam6JaHxEYm/jlfohW/peidohof:Z3CamJjGpeidj
Threatray 9'350 similar samples on MalwareBazaar
TLSH T131A4CF343AEA911AF173AFB45AE43596ABAFBB373603D55D1091038A0713B80DED153B
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
269
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
debit.xlsx
Verdict:
Malicious activity
Analysis date:
2021-09-18 17:13:48 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader trojan formbook stealer covid19
Link:
https://app.any.run/tasks/4c8ab432-ee24-43e6-aa19-62c85b96f591

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/188963/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1031-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/63f5a5f7-a161-4a55-88fb-649ed1de12e8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/853287
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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 (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: 485714 Sample: vuBGOPpy2A Startdate: 18/09/2021 Architecture: WINDOWS Score: 100 33 www.gamifibase.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 vuBGOPpy2A.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\AppData\...\vuBGOPpy2A.exe.log, ASCII 11->31 dropped 59 Tries to detect virtualization through RDTSC time measurements 11->59 61 Injects a PE file into a foreign processes 11->61 15 vuBGOPpy2A.exe 11->15         started        18 vuBGOPpy2A.exe 11->18         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 20 explorer.exe 15->20 injected process9 dnsIp10 35 v3lala99.cdnddd.net 103.15.104.66, 49853, 80 GIGABIT-MYGigabitHostingSdnBhdMY Malaysia 20->35 37 www.yoiseikatsu.net 104.21.30.227, 49800, 80 CLOUDFLARENETUS United States 20->37 39 16 other IPs or domains 20->39 49 System process connects to network (likely due to code injection or exploit) 20->49 24 help.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/3884e83634368ece061a97583d17bfdfe4247af9f8d507f4b594eaabf499e1c9/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-18 17:43:04 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hccoqnrug2hm4bq2s5md2f5737sci6xz7dkqp5fvstvkx5ez4heq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
13c2ff62d1e29d6e88c828851f842b17acb6293da92bdf5223e87a67bf00ed31
Formbook
3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818
Formbook
4611b180e4173882dba3e08aaa44ae28ce14d2f2709b2017082d57bcdecfb352
Formbook
4b9ec9143ae2471c8cf540f5e3815c4ca4bb5e073d5c45e6bd934cc0350e8546
Formbook
b092672d7f36d3deaab664c0a562b055f9cee3f247328e639aca58f025f979ca
Formbook
bb60b98852cad89fe450ec8486cee96bb6932b29c692f97d5b7ed7936556845f
Formbook
cfdb27a9ff39bd1aa5a0a43fe6e272c269a311f5748d8a13b2e705f7d66f16bd
Formbook
+ 9'340 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:uytf loader rat
Link:
https://tria.ge/reports/210918-waklxacddj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.fasilitatortoefl.com/uytf/
Unpacked files
SH256 hash:
9c33f04ebf1782711ec0c00a43d9334adf0a10d7ab4bc3d2c49aa8b4e64a3685
MD5 hash:
e124dde00ff92ae52bc44bd15b8597dc
SHA1 hash:
490b3216176f364fa02b4a0ad18868a1f3fef662
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/1c8521e3-607e-417f-ae69-3607c05e3013/
Parent samples :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 hash:
ad4a7895d529d5164302bb88596964ab42ff125bf0f5544418c80b6d438cb587
MD5 hash:
43ababb6b0a02907aad43084f12b10d9
SHA1 hash:
b60ba705891d5a666d64300181b475a46714ffa8
Link:
https://www.unpac.me/results/1c8521e3-607e-417f-ae69-3607c05e3013/
SH256 hash:
5cc632eff6a50234bdedb15cbdded9bdda1f5fb63d4cb333d2684c90c7721bae
MD5 hash:
4bdf22b9b8d23a6ea400f2424e06aec8
SHA1 hash:
5e9263ee7cf1fa83c3701962a8088bd3b4b18417
Link:
https://www.unpac.me/results/1c8521e3-607e-417f-ae69-3607c05e3013/
SH256 hash:
3884e83634368ece061a97583d17bfdfe4247af9f8d507f4b594eaabf499e1c9
MD5 hash:
4a3d3b6414d0c55e345416a8acde46a8
SHA1 hash:
c29bd879d14566f0aeae3e2ba0c107c5e1af7d19
Link:
https://www.unpac.me/results/1c8521e3-607e-417f-ae69-3607c05e3013/
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/3884e83634368ece061a97583d17bfdfe4247af9f8d507f4b594eaabf499e1c9

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.

Web download

Formbook

Executable exe 3884e83634368ece061a97583d17bfdfe4247af9f8d507f4b594eaabf499e1c9

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1630843/
Cape
Cape
https://www.capesandbox.com/analysis/188963/

Comments


Avatar
zbet commented on 2021-09-18 17:42:21 UTC

url : hxxp://54.169.166.69/debit/debit.exe