MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b04fb6a2bc53196885c36c1de64a717a47bd0c450f2948999c368cf489e9ffb8. 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: 10


Intelligence 10 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b04fb6a2bc53196885c36c1de64a717a47bd0c450f2948999c368cf489e9ffb8
SHA3-384 hash: 2d9bcfbfa234b47eee9a6bda16f1438ffec352383e9af1430b4d95790267b0b511dc7f1264104962b538fc7c5c5afb63
SHA1 hash: 5d22b7982a5ea8233cf18e20c57b3e90d90a48d6
MD5 hash: 07c858ed1fe8ee34db817fa6e9fc87f3
humanhash: lake-mockingbird-fillet-william
File name:doc359680138546284.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:376'832 bytes
First seen:2021-02-27 06:41:45 UTC
Last seen:2021-02-27 09:04:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'602 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:OfUMJm03m1Xh3y1m8qAi6QL9oZOA4LWP963nUxupoLR/uj2Qvv46sCdaA9uTV3z:sUMJmV8qAwo4Rio3n5Is2QHjZz9m
Threatray 3'958 similar samples on MalwareBazaar
TLSH 9C8412402778C726C5BC47BA053413AC47F082416567DB3ABFD67DEE29B3B924662E0B
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: se6b-iad1.servconfig.com
Sending IP: 23.235.198.64
From: Allen Ssempa <assempa@pepsi-cola.co.ug>
Subject: Request for Pro-formas/ Quotations
Attachment: doc359680138546284.pdf.rar (contains "doc359680138546284.pdf.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
137
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
doc359680138546284.pdf.exe
Verdict:
Suspicious activity
Analysis date:
2021-02-27 06:43:55 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/21eda3f7-b8ce-4ea7-8fae-123b34b29214

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/119561/
Detection(s):
SecuriteInfo.com.Artemis07C858ED1FE8.25066.24141.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/620317
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
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)
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: Suspicious Double Extension
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 an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 359151 Sample: doc359680138546284.pdf.exe Startdate: 27/02/2021 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 10 other signatures 2->42 10 doc359680138546284.pdf.exe 3 2->10         started        process3 file4 28 C:\Users\...\doc359680138546284.pdf.exe.log, ASCII 10->28 dropped 52 Tries to detect virtualization through RDTSC time measurements 10->52 14 doc359680138546284.pdf.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 site.260427.com 103.138.194.28, 49751, 80 CARL-NETCarlInternationalInformationltdTW Taiwan; Republic of China (ROC) 17->30 32 hood2healer.com 160.153.53.73, 49750, 80 AS-26496-GO-DADDY-COM-LLCUS United States 17->32 34 3 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 cscript.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/b04fb6a2bc53196885c36c1de64a717a47bd0c450f2948999c368cf489e9ffb8/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-02-26 23:53:25 UTC
AV detection:
7 of 29 (24.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wbh3niv4kmmwrbodnqo6mstrpjd32dcfb4uurgm4g2gpjcpj764a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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Formbook
0ef4f3934342133702e07d176450b7304d5f85bc78652821356f9f046d5367b4
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27084ca2efd9f211569b913d31d8caee75cb773e73367c3f6cd40a78889a1934
Formbook
65dbaf77c991e5737ecf9041dea34a7e9eca1e38925ff69340435a3cff1314a3
Formbook
6a4762f9c862a1ee20e00a7706f5b7dd6f12575513efdb09ea36adbec1ee202f
Formbook
84f70255bf8ae21b26cf03d2776784c32727ae97e1c901fa16cad311cd5c096a
Formbook
a1db821171c7bd2950fad26899fbbc88c787f0cc7d869ee9b29f86bf09ebb92b
Formbook
b5ac8902c4d239f5f72366876e99a586d3aaafe45c9a9e098c8ded9a2db7615c
Formbook
+ 3'948 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210227-8s6e98hnr6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.supinapp.com/grv/
Unpacked files
SH256 hash:
e624003658c4f8b349f567c82229fd15d1e63d3d20fe6f7b4388403038cd2a44
MD5 hash:
b6ce7c1d81b9271eab825ea63de154c3
SHA1 hash:
0e7b89555314f8908c1098b652c9bf50e5ecc27b
Link:
https://www.unpac.me/results/61e5dbed-d4ba-427d-bc38-27d9807be1de/
SH256 hash:
b04fb6a2bc53196885c36c1de64a717a47bd0c450f2948999c368cf489e9ffb8
MD5 hash:
07c858ed1fe8ee34db817fa6e9fc87f3
SHA1 hash:
5d22b7982a5ea8233cf18e20c57b3e90d90a48d6
Link:
https://www.unpac.me/results/61e5dbed-d4ba-427d-bc38-27d9807be1de/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/b04fb6a2bc53196885c36c1de64a717a47bd0c450f2948999c368cf489e9ffb8

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

File information

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

Malspam

Formbook

rar a1adc21c63e72d747380d7d1febb1b9eb66e277bacbabd606543d3b9e078d729

Formbook

Executable exe b04fb6a2bc53196885c36c1de64a717a47bd0c450f2948999c368cf489e9ffb8

(this sample)

  
Dropped by
MD5 71c814138126e3f3072801a11e55653f
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/119561/
  
Dropped by
SHA256 a1adc21c63e72d747380d7d1febb1b9eb66e277bacbabd606543d3b9e078d729

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