MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28323d3c8fd1339a7d4f0ebad6ff377545e88c15fdca9b2f21cdd7c72c07622e. 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: 28323d3c8fd1339a7d4f0ebad6ff377545e88c15fdca9b2f21cdd7c72c07622e
SHA3-384 hash: 4b761877fd368aca9611c6952b6deb43975d1b9964db7e2b2177a0dffc175bc0ab099010b167808fe7bdbdab2b17475d
SHA1 hash: 03a852169aa74f17bb9ee2ce5513246df22093e6
MD5 hash: 4d42d3a6f8a998773e5d3b8d31acfac3
humanhash: vermont-victor-quiet-nine
File name:4d42d3a6f8a998773e5d3b8d31acfac3.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:417'792 bytes
First seen:2022-01-12 11:00:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:0ydtHtSOE37NSwdIgtjPe/8P01TiOtGG:1tNmsiI0m/8mGG
TLSH T1139401DC7A2070AFD847C2BA95A46D70B92836AB031BD507425341EEAA5CFD2DE50DF3
File icon (PE):PE icon
dhash icon b3b3333969693b3b (69 x Formbook, 63 x AgentTesla, 26 x Loki)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
236
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4d42d3a6f8a998773e5d3b8d31acfac3.exe
Verdict:
Suspicious activity
Analysis date:
2022-01-12 11:34:15 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/3cc1b5ca-54da-41ad-88b6-78d236044d3b

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/218700/
Detection(s):
SecuriteInfo.com.Trojan.Siggen16.30975.7968.6911.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Gathering data
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d393ffc3-1d91-443c-9ae1-3110c44c2765
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/919178
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
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)
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
Self deletion via cmd delete
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: 551653 Sample: TLUnGCBfGk.exe Startdate: 12/01/2022 Architecture: WINDOWS Score: 100 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus detection for URL or domain 2->42 44 9 other signatures 2->44 10 TLUnGCBfGk.exe 3 2->10         started        process3 file4 30 C:\Users\user\AppData\...\TLUnGCBfGk.exe.log, ASCII 10->30 dropped 56 Tries to detect virtualization through RDTSC time measurements 10->56 14 TLUnGCBfGk.exe 10->14         started        17 TLUnGCBfGk.exe 10->17         started        signatures5 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 akhirnya-nikah.com 172.96.191.127, 49812, 80 LEASEWEB-APAC-SIN-11LeasewebAsiaPacificpteltdSG Canada 19->32 34 www.parentingz.com 19->34 36 3 other IPs or domains 19->36 46 System process connects to network (likely due to code injection or exploit) 19->46 23 help.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:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/28323d3c8fd1339a7d4f0ebad6ff377545e88c15fdca9b2f21cdd7c72c07622e/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-01-12 11:01:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
23 of 43 (53.49%)
Threat level:
  5/5
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:m1x9 rat spyware stealer trojan
Link:
https://tria.ge/reports/220112-m4kpbscch6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
217d023c1ce88ff81a11918437063a7c18eb3ba1a3a97e15a9abca2047a53696
MD5 hash:
7492ba85c9fe2c964c7fa7fd13c2eed3
SHA1 hash:
856e9f14d9d20b3a6bff691daf4a90e20e04d372
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/a98162a8-75d9-469d-80df-b1c377feba59/
Parent samples :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 hash:
fc4b18f1219c5fae44a3ab393ede915e4039ce520657a291d3557810997f28a9
MD5 hash:
938ea276943638e1c19d85f9d19fb7fc
SHA1 hash:
d6b13cf108e3780df44f01b76939bcae60136056
Link:
https://www.unpac.me/results/a98162a8-75d9-469d-80df-b1c377feba59/
SH256 hash:
14fa22dab74463f4a1763d6f2c3a5de354e697310aa6a0b8c13eeabb4728ba9a
MD5 hash:
605d67161fafc8fcc003033257050e6d
SHA1 hash:
2498791d468dff9c3406a8b3c2c6805e9e94cecb
Link:
https://www.unpac.me/results/a98162a8-75d9-469d-80df-b1c377feba59/
SH256 hash:
28323d3c8fd1339a7d4f0ebad6ff377545e88c15fdca9b2f21cdd7c72c07622e
MD5 hash:
4d42d3a6f8a998773e5d3b8d31acfac3
SHA1 hash:
03a852169aa74f17bb9ee2ce5513246df22093e6
Link:
https://www.unpac.me/results/a98162a8-75d9-469d-80df-b1c377feba59/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/28323d3c8fd1/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/28323d3c8fd1339a7d4f0ebad6ff377545e88c15fdca9b2f21cdd7c72c07622e

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
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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 28323d3c8fd1339a7d4f0ebad6ff377545e88c15fdca9b2f21cdd7c72c07622e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1862603/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/218700/

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