MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6f3ddb071f889d2c41a27e1237113f333ffee0232997b95896767d354eef7df5. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6f3ddb071f889d2c41a27e1237113f333ffee0232997b95896767d354eef7df5
SHA3-384 hash: f537596e458d748d99589797440d0bc40ad3ad369adfd4202d303a30fa903e12620b95f655e4acc117aa017c4947f0ef
SHA1 hash: fb08c8ca83cf0d1f3ce170e7413116f39899d936
MD5 hash: cee2ad9f3f42786f3bf31316170eedc4
humanhash: oscar-orange-high-maine
File name:JUSTIFICANTE.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:450'048 bytes
First seen:2021-11-25 09:02:37 UTC
Last seen:2021-11-25 10:42:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:8O9A0KixBFmp6vnZjyKTSSW5FD49ocavDc:fA0Ki1K6vZjyayq9bf
Threatray 11'737 similar samples on MalwareBazaar
TLSH T183A4121163BC4222CEDD8BBA54B51154A33ED622FA0EDB1D3BC174681AE671393127DF
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
121
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
JUSTIFICANTE.exe
Verdict:
Malicious activity
Analysis date:
2021-11-25 09:04:45 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/ec12f4f7-d8cc-4a06-a446-971319f24b9c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Detection(s):
SecuriteInfo.com.Variant.Bulz.880058.24329.24046.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Searching for synchronization primitives
DNS request
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
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
Link:
https://www.filescan.io/uploads/619f5149f36138de3f3bf4bd/reports/6f6da3a8-fefd-42ec-b0ad-c510646b77d3/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/55ab2589-1a9c-447f-aa91-4dfeb347a814
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/895967
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
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: 528441 Sample: JUSTIFICANTE.exe Startdate: 25/11/2021 Architecture: WINDOWS Score: 100 30 www.goshqjssyngn.mobi 2->30 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 8 other signatures 2->44 11 JUSTIFICANTE.exe 3 2->11         started        signatures3 process4 signatures5 56 Tries to detect virtualization through RDTSC time measurements 11->56 14 JUSTIFICANTE.exe 11->14         started        17 JUSTIFICANTE.exe 11->17         started        process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 19 explorer.exe 14->19 injected process8 dnsIp9 32 www.interestingstore.store 185.104.45.142, 49812, 80 UKRAINE-ASUA Ukraine 19->32 34 www.chenfengrui.com 108.186.21.30, 49843, 80 PEGTECHINCUS United States 19->34 36 11 other IPs or domains 19->36 46 System process connects to network (likely due to code injection or exploit) 19->46 23 svchost.exe 19->23         started        signatures10 process11 signatures12 48 Self deletion via cmd delete 23->48 50 Modifies the context of a thread in another process (thread injection) 23->50 52 Maps a DLL or memory area into another process 23->52 54 Tries to detect virtualization through RDTSC time measurements 23->54 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6f3ddb071f889d2c41a27e1237113f333ffee0232997b95896767d354eef7df5/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-25 09:03:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=n465wby7rcosyqncpyjdoej7gm775ybdfgl3swewoz6tktxppx2q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1bdc41058e53e885ccf81cf42ddac59733b6608f40719017dde98ac33ed8b8f5
Formbook
1f651f590aaf7682d6b480e690099b4115d91f5a260c961ecc6030b2c280708a
Formbook
5f5195f363ef21135a5b5298c2a3576bd03125eec094d769b25296eb0a2605b9
Formbook
7bc7100b7f264478967c50cd333b481fe108f1edfd60db59ec277809781cc59c
Formbook
bbb043c99649e90f8e609d3e1159c20a75f2f41b259f9a51d9f105157e7284ca
Formbook
c0363e690238ce1be218baa1c66a3fe647df3740da9448788945c6863ac6b07c
Formbook
d079479dd85fb94fe08f6cd70cfff35e39c14294174a8ed6f9b480ffc1cbc9b2
Formbook
d559f37dbda95ac2f2e50388cae80a4ee30c81216b644f65ecf4c1ceb87a0b5a
Formbook
dfb938333b6dbb62861831b5641728e8bfa444d4b820df6fb6dbce56f83ab42f
Formbook
e1010d989d5412e83aaf07bf794a76257b1a43bcec34dd8c05280cb97c61e3ec
Formbook
+ 11'727 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:taep loader rat suricata
Link:
https://tria.ge/reports/211125-kz2qyaefhr/
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 WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.mall43.com/taep/
Unpacked files
SH256 hash:
eea4d0a380dd3e55ebbe8cda5f61d632e3a0b2962f686814648c6a8ca1c2cef1
MD5 hash:
1899d1ab9e271378cb64eb5c45fc141f
SHA1 hash:
f11c416d57816c4b3113b36d6808a85ff5a38867
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/83def731-35c8-4fbb-96d4-f237e1444da5/
SH256 hash:
f6639a3b21a09ca5e9e43e10f8ac7f822956232806805252096f03f68bc9815c
MD5 hash:
aa334e922c53c5cba0b43c342ac13b14
SHA1 hash:
68109327b5e98174293bb348dfea6a088cbd5d2f
Link:
https://www.unpac.me/results/83def731-35c8-4fbb-96d4-f237e1444da5/
SH256 hash:
3b3f47c362674efaaedc19c332a6cacf81fdc4f5bd53855707ba1d144c8cd1be
MD5 hash:
4624b5e74a217464197c0410662bb9a7
SHA1 hash:
023660c6d9cefc4efd3f5adc67e7b19567ed6025
Link:
https://www.unpac.me/results/83def731-35c8-4fbb-96d4-f237e1444da5/
SH256 hash:
6f3ddb071f889d2c41a27e1237113f333ffee0232997b95896767d354eef7df5
MD5 hash:
cee2ad9f3f42786f3bf31316170eedc4
SHA1 hash:
fb08c8ca83cf0d1f3ce170e7413116f39899d936
Link:
https://www.unpac.me/results/83def731-35c8-4fbb-96d4-f237e1444da5/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/6f3ddb071f88/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.85
Link:
https://yomi.yoroi.company/submissions/6f3ddb071f889d2c41a27e1237113f333ffee0232997b95896767d354eef7df5

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: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.

Cape
Cape
https://www.capesandbox.com/analysis/209260/

Comments