MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cefd4eb74016e610d635972a5c7131ef8f253b6309cbeb5a3db216b506ef2185. 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 2 File information Comments
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SHA256 hash: cefd4eb74016e610d635972a5c7131ef8f253b6309cbeb5a3db216b506ef2185
SHA3-384 hash: 1490443020eb043ce56137a408d3fc6b67014a171b8ae621660febfb7230425a2d65d148a791709008b04568f72021ae
SHA1 hash: e75dc0e800e1dc0f6ffd2d2aa959583168704c5b
MD5 hash: bd50fe65bcabb9352971e2d7b4d1d5d3
humanhash: jig-pasta-maine-idaho
File name:bd50fe65bcabb9352971e2d7b4d1d5d3.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:662'528 bytes
First seen:2022-12-21 17:59:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:U2iNaUPFC1Xlix2LzUT66ivUod9Yh0NIETRgYI4L:U1wD1XlisvUT666p4h85RgW
TLSH T174E4F15F19D0B675FFE02670C392BDA80A731B1489F6F88D5C932C2F2815A9D6EA444F
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
173
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
bd50fe65bcabb9352971e2d7b4d1d5d3.exe
Verdict:
Malicious activity
Analysis date:
2022-12-21 18:07:12 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/3d0a9dd8-cbbe-4f71-9b89-676000f60eb2

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/348822/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/63a349abd5fc34e7eb5a41ef/reports/952a48be-3b3b-4e4d-8642-b3dfb21b5882/overview
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9281426f-a898-43f9-ae48-c687bb7821d5
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1138865
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Changes security center settings (notifications, updates, antivirus, firewall)
Detected FormBook malware
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Steal Google chrome login data
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
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 771595 Sample: yG8n221lfS.exe Startdate: 21/12/2022 Architecture: WINDOWS Score: 100 53 Malicious sample detected (through community Yara rule) 2->53 55 Antivirus detection for URL or domain 2->55 57 Multi AV Scanner detection for submitted file 2->57 59 8 other signatures 2->59 10 yG8n221lfS.exe 3 2->10         started        process3 file4 41 C:\Users\user\AppData\...\yG8n221lfS.exe.log, ASCII 10->41 dropped 65 Tries to detect virtualization through RDTSC time measurements 10->65 14 yG8n221lfS.exe 10->14         started        17 svchost.exe 10->17         started        19 yG8n221lfS.exe 10->19         started        signatures5 process6 signatures7 75 Modifies the context of a thread in another process (thread injection) 14->75 77 Maps a DLL or memory area into another process 14->77 79 Sample uses process hollowing technique 14->79 81 Queues an APC in another process (thread injection) 14->81 21 explorer.exe 14->21 injected 83 Changes security center settings (notifications, updates, antivirus, firewall) 17->83 25 MpCmdRun.exe 1 17->25         started        process8 dnsIp9 47 full-funs.com 124.150.132.52, 49721, 49722, 80 PUMO-NETPUMONETWORKDIGITALTECHNOLOGYCOLTDTW Taiwan; Republic of China (ROC) 21->47 49 www.full-funs.com 21->49 51 www.derekjech.kred 21->51 63 System process connects to network (likely due to code injection or exploit) 21->63 27 raserver.exe 18 21->27         started        31 conhost.exe 25->31         started        signatures10 process11 file12 43 C:\Users\user\AppData\...\7P4logrv.ini, data 27->43 dropped 45 C:\Users\user\AppData\...\7P4logri.ini, data 27->45 dropped 67 Detected FormBook malware 27->67 69 Tries to steal Mail credentials (via file / registry access) 27->69 71 Tries to harvest and steal browser information (history, passwords, etc) 27->71 73 3 other signatures 27->73 33 cmd.exe 2 27->33         started        signatures13 process14 file15 39 C:\Users\user\AppData\Local\Temp\DB1, SQLite 33->39 dropped 61 Tries to harvest and steal browser information (history, passwords, etc) 33->61 37 conhost.exe 33->37         started        signatures16 process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cefd4eb74016e610d635972a5c7131ef8f253b6309cbeb5a3db216b506ef2185/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-12-21 13:59:49 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z36u5n2ac3tbbvrvs4vfy4jr56hsko3dbhf6wwr5willkbxpegcq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:b47h rat spyware stealer trojan
Link:
https://tria.ge/reports/221221-wlcenscg79/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Unpacked files
SH256 hash:
56698c6b1dc0e6b65194dda05861628a2c3204c0467971a0cbbc5ad800c55620
MD5 hash:
a849a9e4545dd130c7daaf1090f5a935
SHA1 hash:
970b4148796e9cf7f4ffbc0994d0b716ed517c65
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/035e99fb-d290-4e4a-834f-6348987b675d/
Parent samples :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 hash:
fc6485350cf55dc14ecbfd9b91b7a9979f61023b4104101e9f351caa6c73abaa
MD5 hash:
6c3fdb2b5d93cf814ea1b6ca05a0efcf
SHA1 hash:
f8ae5f9fa1c9b6b0e47b2f0873d2ee3373e0ebf5
Link:
https://www.unpac.me/results/035e99fb-d290-4e4a-834f-6348987b675d/
SH256 hash:
d6ba422c2c7eb588f2326e9073825b9fdb3812f70c5cfdd80ea006f3e15ad97b
MD5 hash:
770e4bdd2be0a0a8d589d2f25dc31b3b
SHA1 hash:
efde841b66b5be2213b7943ae20277ca36732022
Link:
https://www.unpac.me/results/035e99fb-d290-4e4a-834f-6348987b675d/
SH256 hash:
ff1b42ea7d56a37eae801adbddb7116f52a4664c0b41302736f522852edc2747
MD5 hash:
89ac57478044c57c7195943116a521e0
SHA1 hash:
1ff2bafeed795423e3538d810bda8e1e3fcdcfa5
Link:
https://www.unpac.me/results/035e99fb-d290-4e4a-834f-6348987b675d/
SH256 hash:
6caf18c568223a6b1d64b9b92416c917db4b0c49651ff93f9cee449e3cfb1915
MD5 hash:
40d98610e06c93987d11637946fc196c
SHA1 hash:
096902fc1e13023bcb4dfead7c5532341f89faf3
Link:
https://www.unpac.me/results/035e99fb-d290-4e4a-834f-6348987b675d/
SH256 hash:
cefd4eb74016e610d635972a5c7131ef8f253b6309cbeb5a3db216b506ef2185
MD5 hash:
bd50fe65bcabb9352971e2d7b4d1d5d3
SHA1 hash:
e75dc0e800e1dc0f6ffd2d2aa959583168704c5b
Link:
https://www.unpac.me/results/035e99fb-d290-4e4a-834f-6348987b675d/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cefd4eb74016/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/cefd4eb74016e610d635972a5c7131ef8f253b6309cbeb5a3db216b506ef2185

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: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 cefd4eb74016e610d635972a5c7131ef8f253b6309cbeb5a3db216b506ef2185

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2395551/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/348822/

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