MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4bd61ebdde5aa96681173c42a9a296a8cf444dbee2c2d16aed1d76736038b65a. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4bd61ebdde5aa96681173c42a9a296a8cf444dbee2c2d16aed1d76736038b65a
SHA3-384 hash: 371e2b70100b280d10a4834f440e66233f0c473357fefde3b64845edaf588ef862e62011d01c0c539d79fabb9fa0b83b
SHA1 hash: 880c3234e912ba9585941755030470694669f2dd
MD5 hash: 05404bb4c3bde77a853c48eba092c7d1
humanhash: lake-texas-twenty-failed
File name:PO00112Invoices.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:413'696 bytes
First seen:2021-11-04 11:58:17 UTC
Last seen:2021-11-04 13:31:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:csv8lhUOrMSfz2z4QcAlilDr5njU0SotsbzimLVE5xyLaoUImTa5tNlT:vv6hUYMS6z1PlilNA0S/b2vxhjT8N1
TLSH T1FA94E1127AA9CD22D27A2537CCDFC01403FCF9417613D72A7DA973A895933A325A1ACD
Reporter cocaman
Tags:exe FormBook INVOICE

Intelligence

File Origin
# of uploads :
2
# of downloads :
123
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO00112Invoices.exe
Verdict:
Malicious activity
Analysis date:
2021-11-04 12:03:43 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/e59c26e9-3112-43e4-84a5-e38ac6b6e37e

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/202304/
Detection(s):
SecuriteInfo.com.Artemis05404BB4C3BD.11018.20173.UNOFFICIAL
Create hunting rule

Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6183cb098eec3805367da439/reports/83b6b83b-17b7-4738-9d76-213986869369/overview
Result
Verdict:
UNKNOWN
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/8e1bbf92-b717-4aa1-b616-53ca2ab76212
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/883133
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 dropped file
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
Uses netsh to modify the Windows network and firewall settings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 515567 Sample: PO00112Invoices.exe Startdate: 04/11/2021 Architecture: WINDOWS Score: 100 40 www.rvthereyetmoriarty.com 2->40 42 rvthereyetmoriarty.com 2->42 44 www.fsol.pro 2->44 54 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->54 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 9 other signatures 2->60 11 PO00112Invoices.exe 7 2->11         started        signatures3 process4 file5 34 C:\Users\user\AppData\Roaming\BlsnsV.exe, PE32 11->34 dropped 36 C:\Users\user\AppData\Local\...\tmpF893.tmp, XML 11->36 dropped 38 C:\Users\user\...\PO00112Invoices.exe.log, ASCII 11->38 dropped 74 Uses schtasks.exe or at.exe to add and modify task schedules 11->74 76 Tries to detect virtualization through RDTSC time measurements 11->76 15 PO00112Invoices.exe 11->15         started        18 schtasks.exe 1 11->18         started        signatures6 process7 signatures8 78 Modifies the context of a thread in another process (thread injection) 15->78 80 Maps a DLL or memory area into another process 15->80 82 Sample uses process hollowing technique 15->82 84 Queues an APC in another process (thread injection) 15->84 20 explorer.exe 15->20 injected 24 conhost.exe 18->24         started        process9 dnsIp10 46 www.holidayhomebliss.com 94.136.40.51, 49809, 80 GD-EMEA-DC-LD5GB United Kingdom 20->46 48 www.cvd8rn.com 103.101.153.212, 80 FENGNIAOBeijingFengniaoNetworkTechnologyCoLtdCN China 20->48 50 2 other IPs or domains 20->50 62 System process connects to network (likely due to code injection or exploit) 20->62 64 Uses netsh to modify the Windows network and firewall settings 20->64 26 netsh.exe 12 20->26         started        signatures11 process12 dnsIp13 52 www.cvd8rn.com 26->52 66 Self deletion via cmd delete 26->66 68 Modifies the context of a thread in another process (thread injection) 26->68 70 Maps a DLL or memory area into another process 26->70 72 Tries to detect virtualization through RDTSC time measurements 26->72 30 cmd.exe 1 26->30         started        signatures14 process15 process16 32 conhost.exe 30->32         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4bd61ebdde5aa96681173c42a9a296a8cf444dbee2c2d16aed1d76736038b65a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-04 11:59:05 UTC
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jplb5po6lkuwnaixhrbktiuwvdhuitn64lbnc2xndv3hgybywzna._file
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:fidd loader rat suricata
Link:
https://tria.ge/reports/211104-n5qseadfgm/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.holidayhomebliss.com/fidd/
Unpacked files
SH256 hash:
f7448e3f04819e578d60c14a3b3aec22da868064d03e7b5e62918ded1354abd3
MD5 hash:
5163f8b19bbaaf8fa8ed4f3f2b91f93c
SHA1 hash:
81c22bd19291a26c3b9bdbfbb16f1abeaab32ca0
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/843db2cf-4506-43f4-a815-e17eb8989e4e/
Parent samples :
16d5167a0d1a658d05924affc3fa4493dd65eec050527d3ed7dbb4f343bf15ad
4bd61ebdde5aa96681173c42a9a296a8cf444dbee2c2d16aed1d76736038b65a
3e1440a1b46c4ffc05088356578a64a9a7a34bf1a243e295c552501076a568e9
f3701908c09289bbef3b6d8019687b95df2d02120e36f749067afa46a6d90b4d
SH256 hash:
0f63d16def311302f78014cb29b9d3fa201307587fb3bfca7d0299a6d5b9d339
MD5 hash:
d4210168680c71428d13bd0bf7f41618
SHA1 hash:
8bdb84da9933e83233bb39ace058ffd9f88f2abd
Link:
https://www.unpac.me/results/843db2cf-4506-43f4-a815-e17eb8989e4e/
SH256 hash:
110a28b39b1e0840684110fa77a580effce50755cb865ce9df566f1fff308d05
MD5 hash:
17d644e87b9923fb2a0ed51e7594d82f
SHA1 hash:
863600e4908ebd4ed26285e210d983d04399e600
Link:
https://www.unpac.me/results/843db2cf-4506-43f4-a815-e17eb8989e4e/
SH256 hash:
4bd61ebdde5aa96681173c42a9a296a8cf444dbee2c2d16aed1d76736038b65a
MD5 hash:
05404bb4c3bde77a853c48eba092c7d1
SHA1 hash:
880c3234e912ba9585941755030470694669f2dd
Link:
https://www.unpac.me/results/843db2cf-4506-43f4-a815-e17eb8989e4e/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4bd61ebdde5a/report/overview.html
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/4bd61ebdde5aa96681173c42a9a296a8cf444dbee2c2d16aed1d76736038b65a

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.

Malspam

Formbook

zip 6d3fe48363d732ff5bc7b3896eaf36caf342c8c7825ef31cf05d2ae356f64163

Formbook

Executable exe 4bd61ebdde5aa96681173c42a9a296a8cf444dbee2c2d16aed1d76736038b65a

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 6d3fe48363d732ff5bc7b3896eaf36caf342c8c7825ef31cf05d2ae356f64163
Cape
Cape
https://www.capesandbox.com/analysis/202304/

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