MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a26e0c1d407cda61c4edaef558616cef53b7c168ca702424db5902350929e597. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments
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SHA256 hash: a26e0c1d407cda61c4edaef558616cef53b7c168ca702424db5902350929e597
SHA3-384 hash: c6bc2f33ee961e47054ea46771b430cdef7c260bb7f66807628eab310c0bfd5fc9df90c1105edc7e48a5bfeb0e279ad4
SHA1 hash: 4cfa30a89f37a66d589b05705b9de298bcf901cd
MD5 hash: 5afe0c2e93842efb532cbd7badb518b6
humanhash: harry-six-winter-uniform
File name:Business Proposal.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:351'744 bytes
First seen:2021-11-12 06:08:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:6OH/9s2GhNuTgOOtBGQAwREdfDAA01gJo3kgNOAL6w86Q+CvbLy:6Is2iNOOLzEdrf016gNO+Cxva
Threatray 11'081 similar samples on MalwareBazaar
TLSH T1B474121079E88F36C939EBFA5B600D0047F95AEA6442F75D1CE6B1DE16B3B500290BA7
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
130
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/205165/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
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Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/618e0501a00afa9663a4c494/reports/aa2655cf-4f3f-4f73-8301-9b1b05737571/overview
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/6684865c-609f-4ec8-9249-934de65c1c20
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/887904
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 520377 Sample: Business Proposal.exe Startdate: 12/11/2021 Architecture: WINDOWS Score: 100 31 www.sunstone.media 2->31 33 www.breakingza.com 2->33 35 ext-sq.squarespace.com 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 9 other signatures 2->49 11 Business Proposal.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\Business Proposal.exe.log, ASCII 11->29 dropped 63 Injects a PE file into a foreign processes 11->63 15 Business Proposal.exe 11->15         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 Queues an APC in another process (thread injection) 15->71 18 explorer.exe 15->18 injected process9 dnsIp10 37 ubercuernavaca.com 192.185.131.183, 49757, 80 UNIFIEDLAYER-AS-1US United States 18->37 39 www.santamaria-rentacar.com 217.160.0.162, 49786, 80 ONEANDONE-ASBrauerstrasse48DE Germany 18->39 41 15 other IPs or domains 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 53 Uses netsh to modify the Windows network and firewall settings 18->53 22 netsh.exe 18->22         started        signatures11 process12 signatures13 55 Self deletion via cmd delete 22->55 57 Modifies the context of a thread in another process (thread injection) 22->57 59 Maps a DLL or memory area into another process 22->59 61 Tries to detect virtualization through RDTSC time measurements 22->61 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/a26e0c1d407cda61c4edaef558616cef53b7c168ca702424db5902350929e597/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2021-11-12 06:09:05 UTC
AV detection:
15 of 27 (55.56%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ujxayhkaptngdrhnv32vqylm55j3pqlizjycijg3lebdkcjj4wlq._file
Verdict:
malicious
Label(s):
formbook
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Similar samples:
060c2f164a53cf74817b9b2f176d770dbde8b1ef71fe5322abf9ae8197232b7d
Formbook
0aeac649d2d859f9f98e5545017913ed1e3270ba4d46602c2cac3adbe03dea40
Formbook
0e636b89393a1581a2e3f4b141c9886bed9c77969569605cdb44b78d94127802
Formbook
367e0400b78d94aed02d364e9a8e41dfb7e0136f12e68dd1b532d529354e00f7
Formbook
3c9984e534636c34f7a22ccbbfb1c06baa5a6f16883eb77a65ac615dffa24f16
Formbook
43d01d2eb5232707d644d1ea624c347b98220adbbdb7a8bd625814a5b971dd2d
Formbook
67e2366e87044cbdeefa32770db63e9592c7e637d4c62c678f894eeba419bd26
Formbook
6ffe756ce71f1457d7dd480357f3545f123b750fc4bf30683b59887d491948a7
Formbook
7384a61fc69ce24610f7c4658c2ef8786c4cdc5d6ad6b33d1a9f506d6b6388d3
Formbook
92206b9fa1251b589ab6d14b4828cafe0ec9d9b44df469602b7d3d1ed16ae0e8
Formbook
+ 11'071 additional samples on MalwareBazaar
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:u3r5 loader rat
Link:
https://tria.ge/reports/211112-gwgd2scgb8/
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 WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.santamaria-rentacar.com/u3r5/
Unpacked files
SH256 hash:
4d465cc5d72d67175bc8ad6833a12baf3d5af377281d4372c5c7396b4248fecf
MD5 hash:
10f14f90dddcae834bade30ad20f0134
SHA1 hash:
fe6836fe251e2a0b15f5b6b6271174f1755848d5
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/687aad26-8d0e-4f2b-957b-045a67604f46/
Parent samples :
67e2366e87044cbdeefa32770db63e9592c7e637d4c62c678f894eeba419bd26
a26e0c1d407cda61c4edaef558616cef53b7c168ca702424db5902350929e597
SH256 hash:
bd4c4912209802bb457983177d94b220d20dc9775ff973f90bd1c6afd729bc9c
MD5 hash:
8cde05c2cc918a68b075bdb2854c9994
SHA1 hash:
bc3c4e2826370171102ee8b7bd317493cd72c15f
Link:
https://www.unpac.me/results/687aad26-8d0e-4f2b-957b-045a67604f46/
SH256 hash:
36a4cc3191e06bf5339f239453103a8279770ba12e09cb941ff8b897084962fd
MD5 hash:
1af40efaef62815de9d4554cabc0f6a0
SHA1 hash:
167b77925022c5733bb379eb04ac2c6a4bfb5664
Link:
https://www.unpac.me/results/687aad26-8d0e-4f2b-957b-045a67604f46/
SH256 hash:
a26e0c1d407cda61c4edaef558616cef53b7c168ca702424db5902350929e597
MD5 hash:
5afe0c2e93842efb532cbd7badb518b6
SHA1 hash:
4cfa30a89f37a66d589b05705b9de298bcf901cd
Link:
https://www.unpac.me/results/687aad26-8d0e-4f2b-957b-045a67604f46/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/a26e0c1d407c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/a26e0c1d407cda61c4edaef558616cef53b7c168ca702424db5902350929e597

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
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Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
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Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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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 a26e0c1d407cda61c4edaef558616cef53b7c168ca702424db5902350929e597

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/205165/

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