MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3381d8be907792db980f3e9cca2965af5b5f9057fc717a5de48760feb45aa49. 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 4 File information Comments
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SHA256 hash: a3381d8be907792db980f3e9cca2965af5b5f9057fc717a5de48760feb45aa49
SHA3-384 hash: 7b1320d0a462df1380a49f6f317a932ac6f938c0bae12da675199b8b0c23c24113a5faa5f885a4a302f78218fd1fa975
SHA1 hash: 6d155cbc42d68e9bd7728ccddff368bfe483610a
MD5 hash: cac044c9dda2493e1ac348af59b4ba30
humanhash: quiet-maine-queen-ohio
File name:Payment confirmation copy.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:830'976 bytes
First seen:2021-08-04 19:55:58 UTC
Last seen:2021-08-04 21:14:13 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:OWe3HCwC9mIzUewRTCWagCWub4NvMs+rOR7Eluz0E:fEYb4p3+rc7R
Threatray 7'293 similar samples on MalwareBazaar
TLSH T19705E1287788CB94DC6E0B76154CC2103FF499B59231D668FF9A85F5A4C2E1CE2B7386
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
315
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Payment confirmation copy.exe
Verdict:
Malicious activity
Analysis date:
2021-08-04 19:59:10 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/5206e9f6-f307-4216-93e0-bbf7690823f0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/176452/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.964.63.13878.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
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/5f95fb54-a4f5-47e7-9023-97f5ae93d5d6
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/827958
Signature
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
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 signatures2 2 Behavior Graph ID: 460390 Sample: Payment confirmation copy.exe Startdate: 06/08/2021 Architecture: WINDOWS Score: 100 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 10 other signatures 2->42 10 Payment confirmation copy.exe 3 2->10         started        process3 file4 28 C:\...\Payment confirmation copy.exe.log, ASCII 10->28 dropped 52 Injects a PE file into a foreign processes 10->52 14 Payment confirmation copy.exe 10->14         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 Queues an APC in another process (thread injection) 14->60 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.espace22.com 52.58.78.16, 49743, 80 AMAZON-02US United States 17->30 32 www.political.singles 17->32 34 political.singles 34.102.136.180, 49742, 80 GOOGLEUS United States 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 WWAHost.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:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a3381d8be907792db980f3e9cca2965af5b5f9057fc717a5de48760feb45aa49/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-02 00:13:48 UTC
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=um4b3c7ja54s3oma6pu4ziuwll23l6ifp7drpjo6jb3a722fvjeq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
30e3ae78d7104db0f2d4efa2d4588b1dce2e37a5f2a51968add9337108e1d610
Formbook
57f24fb8b5067342be6583d562e3f4e2eda6657e6574cf41290c6c0faa6e508b
Formbook
71cb97b67ebcc50a0bef217b3ca9591cfa49f6b8c8d11ee9952c2cde0b7b6a51
Formbook
7b40c9c16df4b35ae04076a8afd38c4fe4bf5525bb388ea3871ec2371fa9e049
Formbook
a2cdf452f83aa86c0f3ade321cfc00a9ed3671082372081a67cad84a26492051
Formbook
b663fea76aadbf574e5bb9f704ad689ec10f0d720b0b9641e70b27494fe4cc17
Formbook
b8ad131dedee5c7f3164a25f907a69c6f90632f901ecf50a61aa7e31b4c8334e
Formbook
+ 7'283 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/210804-v9dflzfaj2/
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
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.yjhlgg.com/grve/
Unpacked files
SH256 hash:
0bf7d2cbf5bf8d04b7a627bd20640ffaf4895e4d7981783f0c9a1e31a10e70c2
MD5 hash:
ba2d9893a0e054e78196bc46bada0b8b
SHA1 hash:
2d2f247f6a28fdb6580f5a82a6b2186f3c24472a
Link:
https://www.unpac.me/results/5b1b911e-ac1d-4952-b5fd-0fb87a74e3b1/
SH256 hash:
97d2fa1d01b2f9a2199896e05e0cf60c14a9f41ef2d72e15fbb862b7afa08438
MD5 hash:
68463851c0e6fe7a254c99fae763d454
SHA1 hash:
4587a5371d88c296a0184fe47ee0c5245b187127
Link:
https://www.unpac.me/results/5b1b911e-ac1d-4952-b5fd-0fb87a74e3b1/
SH256 hash:
8afb4b443e7cd9530293d42b0782a7c08e4c25f2bb33b15613bd5e016b47937a
MD5 hash:
3262a0b94c21371f333e342b31f87f13
SHA1 hash:
fb42ef406ee76e6e84f8456188dff8f85401d981
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/5b1b911e-ac1d-4952-b5fd-0fb87a74e3b1/
Parent samples :
e92575edf627cec919538f92983c709e468c7c671fc8f7df767624b514e3104a
71cb97b67ebcc50a0bef217b3ca9591cfa49f6b8c8d11ee9952c2cde0b7b6a51
b663fea76aadbf574e5bb9f704ad689ec10f0d720b0b9641e70b27494fe4cc17
7b40c9c16df4b35ae04076a8afd38c4fe4bf5525bb388ea3871ec2371fa9e049
57f24fb8b5067342be6583d562e3f4e2eda6657e6574cf41290c6c0faa6e508b
a3381d8be907792db980f3e9cca2965af5b5f9057fc717a5de48760feb45aa49
SH256 hash:
a3381d8be907792db980f3e9cca2965af5b5f9057fc717a5de48760feb45aa49
MD5 hash:
cac044c9dda2493e1ac348af59b4ba30
SHA1 hash:
6d155cbc42d68e9bd7728ccddff368bfe483610a
Link:
https://www.unpac.me/results/5b1b911e-ac1d-4952-b5fd-0fb87a74e3b1/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/a3381d8be907792db980f3e9cca2965af5b5f9057fc717a5de48760feb45aa49

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
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

Executable exe a3381d8be907792db980f3e9cca2965af5b5f9057fc717a5de48760feb45aa49

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/176452/

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