MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3c94599cada17b9fae62316e54a1d69db7c475223721a5a57abe8774a2b5da74. 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 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3c94599cada17b9fae62316e54a1d69db7c475223721a5a57abe8774a2b5da74
SHA3-384 hash: 36f4f962974a50af038cd744f46c91970d3927aee31a71b4d9cae682644292c0f45e087ad4187d3e928fe4e863bcf0e3
SHA1 hash: 3394160d4f37914142d40d669bb2cdd9d0e52a33
MD5 hash: 79ae19867123996663b85d5b1c8d5040
humanhash: maryland-crazy-delta-missouri
File name:79ae19867123996663b85d5b1c8d5040.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:164'352 bytes
First seen:2021-04-29 15:06:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 3072:UTBOq6O8nQJASnoHZ/WwHcD7KhtOJ9Fvo9IZHYy5KURdS+gy:Usvj8oH1Z8DCOJ9Fo9IJWeY
Threatray 4'983 similar samples on MalwareBazaar
TLSH D9F39E32DA41C070E2A241F5B6AD1B7B883E0D353254A1E6E3E12AA16EF15E5F43D31F
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
130
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/146751/
Detection(s):
SecuriteInfo.com.Trojan.PWS.Banker1.29984.UNOFFICIAL
Create hunting rule

Win.Malware.Formbook-9802749-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/702604
Signature
Antivirus / Scanner detection for submitted sample
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
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: 400227 Sample: lBXZjiCuW0.exe Startdate: 29/04/2021 Architecture: WINDOWS Score: 100 26 www.effectivevip.com 2->26 28 effectivevip.com 2->28 30 www.fontaine-escargots.com 2->30 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 5 other signatures 2->50 10 lBXZjiCuW0.exe 2->10         started        signatures3 process4 signatures5 52 Modifies the context of a thread in another process (thread injection) 10->52 54 Maps a DLL or memory area into another process 10->54 56 Sample uses process hollowing technique 10->56 58 2 other signatures 10->58 13 explorer.exe 10->13 injected process6 dnsIp7 32 www.nlk-bazis-mail.online 185.137.235.222, 49758, 80 SELECTELRU Russian Federation 13->32 34 applife.info 51.79.121.217, 49771, 80 OVHFR Canada 13->34 36 18 other IPs or domains 13->36 60 System process connects to network (likely due to code injection or exploit) 13->60 17 svchost.exe 13->17         started        20 autochk.exe 13->20         started        signatures8 process9 signatures10 38 Modifies the context of a thread in another process (thread injection) 17->38 40 Maps a DLL or memory area into another process 17->40 42 Tries to detect virtualization through RDTSC time measurements 17->42 22 cmd.exe 1 17->22         started        process11 process12 24 conhost.exe 22->24         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3c94599cada17b9fae62316e54a1d69db7c475223721a5a57abe8774a2b5da74/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2021-04-29 15:07:23 UTC
AV detection:
28 of 29 (96.55%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hskfthfnuf5z7ltcgfxfjiowtw34i5jcg4q2ljl2x2dxjivv3j2a._file
Verdict:
malicious
Similar samples:
40628d32ef0746f397d0d41b839530eae24d249dd2f414450a8d9dda03741d10
Formbook
6bb8fa14bf9c650a67541ffedff2e3f1c055454b90489653c95aa39284d7eb92
Formbook
7095eaf52cf5806f19b13137aa004a72f92cea88fc94c4397dd1f10aa08e8b1a
Formbook
7e88f1c425154e6fff6d031aaaa4d8bb4c8ff131e429f44310fd936bfc08b357
Formbook
80b056a8c2fee08fd3361a8a271dea407425ca335275d49f81a1c50a06d9ed98
Formbook
852cc855a1aa63d081ebeec5fd688a3c80d50a14d80c760256c4b46208d77b8d
Formbook
95eedb3eaf98ec12d5f66609278d43f94e1f635420d413ee0672bbf9434aafa4
Formbook
98bf20a283219c4cc786234b7d389766fddbe3b095d13c9109f5406128e83103
Formbook
c53be6b826e068d9814e459371316e45c52737bd94da13f0e536498d207110aa
Formbook
f711f998297a0d98cb243f6ce2c0ed47271be92cad4ad0aa53cd369fb16c1746
Formbook
+ 4'973 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader rat
Link:
https://tria.ge/reports/210429-x9pmz3vl1x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Malware Config
C2 Extraction:
http://www.yuanyouwang.com/njhr/
Unpacked files
SH256 hash:
3c94599cada17b9fae62316e54a1d69db7c475223721a5a57abe8774a2b5da74
MD5 hash:
79ae19867123996663b85d5b1c8d5040
SHA1 hash:
3394160d4f37914142d40d669bb2cdd9d0e52a33
Detections:
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/98dda02e-e5c4-47e6-ab27-6fe5911fde36/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/3c94599cada17b9fae62316e54a1d69db7c475223721a5a57abe8774a2b5da74

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:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Web download

Formbook

Executable exe 3c94599cada17b9fae62316e54a1d69db7c475223721a5a57abe8774a2b5da74

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/146751/
  
URLhaus
https://urlhaus.abuse.ch/url/1183464/
  
Delivery method
Distributed via web download

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-29 16:12:29 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0001.034] Anti-Behavioral Analysis::Anti-debugging Instructions
1) [B0009.029] Anti-Behavioral Analysis::Instruction Testing
2) [B0012.001] Anti-Static Analysis::Argument Obfuscation
3) [C0029.002] Cryptography Micro-objective::SHA1::Cryptographic Hash
4) [C0027.009] Cryptography Micro-objective::RC4::Encrypt Data
5) [C0021.004] Cryptography Micro-objective::RC4 PRGA::Generate Pseudo-random Sequence
6) [C0026.001] Data Micro-objective::Base64::Encode Data
7) [C0026.002] Data Micro-objective::XOR::Encode Data