MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f9a8485314c2b666caf0a1a729a96cb974780f331ea9baa0c03e7f02035cf05. 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 1 File information Comments
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SHA256 hash: 3f9a8485314c2b666caf0a1a729a96cb974780f331ea9baa0c03e7f02035cf05
SHA3-384 hash: 60f4df091833111bd8504dfff2836da45ebfa7ed5fa3d226c0c078798aca188cda538ca60f64c99fb63ef1af534f0076
SHA1 hash: 30f26d59be9ec21bd7c3df0eda359482864702b7
MD5 hash: 06f47d6c56ea1cf96bd70d113ee661f1
humanhash: mountain-iowa-floor-sink
File name:boss.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:540'288 bytes
First seen:2021-08-04 06:16:40 UTC
Last seen:2021-08-04 07:21:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 97750a00050e37c7b56da7bc3864f0f1 (7 x Formbook, 2 x Loki, 1 x RedLineStealer)
ssdeep 12288:SBn0RN617gNm5YnXDdRgMVahjLySXJGejXhB75Kc3YEuIHdC:SBn0RNlDdRg6axmSgoRBUzIHdC
Threatray 7'310 similar samples on MalwareBazaar
TLSH T1CFB4BE11B9818031C2B3383107B9F2B289BDB8702E259E9F57D819795F744D1B63AB6F
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
187
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/176240/
Detection(s):
SecuriteInfo.com.Trojan.Siggen14.53796.25657.24745.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Launching the process to change network settings
Sending a UDP request
Launching cmd.exe command interpreter
DNS request
Connection attempt
Sending an HTTP GET request
Unauthorized injection to a system process
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e47f6ff2-6a8c-4cf5-8d2f-eae0d0ddf516
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/826663
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Sigma detected: CMSTP Execution Process Creation
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: 459098 Sample: boss.exe Startdate: 04/08/2021 Architecture: WINDOWS Score: 100 34 www.lunzhu168.com 2->34 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 6 other signatures 2->44 11 boss.exe 2->11         started        signatures3 process4 signatures5 52 Maps a DLL or memory area into another process 11->52 54 Tries to detect virtualization through RDTSC time measurements 11->54 14 boss.exe 11->14         started        process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 28 www.pevention.com 95.211.189.152, 49783, 80 LEASEWEB-NL-AMS-01NetherlandsNL Netherlands 17->28 30 www.cloudrevolutionawards.com 62.233.121.61, 49781, 80 IOMART-ASGB United Kingdom 17->30 32 13 other IPs or domains 17->32 36 System process connects to network (likely due to code injection or exploit) 17->36 21 cmstp.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3f9a8485314c2b666caf0a1a729a96cb974780f331ea9baa0c03e7f02035cf05/
Threat name:
Win32.Ransomware.Cryptor
Create hunting rule
Status:
Malicious
First seen:
2021-08-04 00:00:35 UTC
AV detection:
15 of 46 (32.61%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=h6nijbjrjqvwm3fpbinhfguwzolupahtghvjxkqmapt7aibvz4cq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
18f4cf60cabec371c21e141ab1e15754654351ba4bfd85ae717f5c760f3c102a
Formbook
2d3642f2c997cdd1a84d283738cd6d09f321f681dbc26fab6cca262d59401e20
Formbook
355dd96121c1930f9c9c0f94b6474d5cbeb3bcfd6a7c51a043674cc79a26c891
Formbook
7e5cbd1d9fa1eab91099fcf24c569ce8e14fdcdc1f4f345d47ffdb5270c9312c
Formbook
91f157317f4b73121bcb06400904d5e9eff6461ea6495804878aa3c9b2966dc8
Formbook
a6169937c872aefc3f1e5c13e40f05d9cb0cbba3a16490f134b810b47027b035
Formbook
a62281360a594e22783fb5dfc0e34645726b22df9ae0939b56a5b41e51289f97
Formbook
+ 7'300 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat suricata
Link:
https://tria.ge/reports/210804-fv6h7ry43s/
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.lapashawhite.com/p596/
Unpacked files
SH256 hash:
bf45980be394b1bd631df30d60ce7858b86aba9e7e9bd39538b696baff7bbfb6
MD5 hash:
f54fb63119a6573a30714db5eea91734
SHA1 hash:
777e72e60104ff6f628d99344b18159b14f387a9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/f71981c0-0ab5-4603-aee6-b260ed5bc558/
Parent samples :
a62281360a594e22783fb5dfc0e34645726b22df9ae0939b56a5b41e51289f97
91f157317f4b73121bcb06400904d5e9eff6461ea6495804878aa3c9b2966dc8
2d3642f2c997cdd1a84d283738cd6d09f321f681dbc26fab6cca262d59401e20
a6169937c872aefc3f1e5c13e40f05d9cb0cbba3a16490f134b810b47027b035
18f4cf60cabec371c21e141ab1e15754654351ba4bfd85ae717f5c760f3c102a
3f9a8485314c2b666caf0a1a729a96cb974780f331ea9baa0c03e7f02035cf05
SH256 hash:
fab0d38a231e47e5e8282a83025ab2147cff22dc47787edf83f2117f2c86738a
MD5 hash:
087cc8d75c79c69242833d84d72c7a0b
SHA1 hash:
62f1dcd6b59ba0e75d38b7a701470768744ef716
Link:
https://www.unpac.me/results/f71981c0-0ab5-4603-aee6-b260ed5bc558/
SH256 hash:
3f9a8485314c2b666caf0a1a729a96cb974780f331ea9baa0c03e7f02035cf05
MD5 hash:
06f47d6c56ea1cf96bd70d113ee661f1
SHA1 hash:
30f26d59be9ec21bd7c3df0eda359482864702b7
Link:
https://www.unpac.me/results/f71981c0-0ab5-4603-aee6-b260ed5bc558/
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/3f9a8485314c2b666caf0a1a729a96cb974780f331ea9baa0c03e7f02035cf05

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

File information

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

Malspam

Formbook

Executable exe 3f9a8485314c2b666caf0a1a729a96cb974780f331ea9baa0c03e7f02035cf05

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/176240/

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