MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa112ed45fdbe4d9e70479dce507d4c8b3d5ceae3d2107e83d87a7c84eac6294. 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: aa112ed45fdbe4d9e70479dce507d4c8b3d5ceae3d2107e83d87a7c84eac6294
SHA3-384 hash: af39296bf3dff74d27769a5511bf03d4b4bf838e8aea94ce97f84a3a470a657ec36396776ce0d73cc70634785f6352a9
SHA1 hash: f7bbeb4d67502e7f28d81a4baa2fe0128f036db3
MD5 hash: 229a0d84ac897a99d5df4283414abf6f
humanhash: wisconsin-red-william-september
File name:bbb.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:738'816 bytes
First seen:2022-02-24 14:47:32 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:HyDENczaJsDcH22qla5w/yXbxY6IMypDEel0vu:S8c8LH0MW/Ibx/kbl0vu
TLSH T195F4AE08FF598AC9ECB6467A95F863002354FF749CCB8A07719D667DCABB3952E4060C
File icon (PE):PE icon
dhash icon 69d4b26868b2cc71 (23 x Formbook, 6 x SnakeKeylogger, 2 x AgentTesla)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
233
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/244359/
Detection(s):
SecuriteInfo.com.EXE.Obfus-4.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/62179aa7a6f52d32f181dd69/reports/afd135b7-042f-49db-a30f-7c8d2e1ad2a2/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/01f5fda8-5919-4817-a9fa-883af5960084
Result
Threat name:
FormBook gzRat
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/945814
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Tries to detect virtualization through RDTSC time measurements
Yara detected Costura Assembly Loader
Yara detected FormBook
Yara detected gzRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 578294 Sample: bbb.exe Startdate: 24/02/2022 Architecture: WINDOWS Score: 100 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus / Scanner detection for submitted sample 2->53 55 Multi AV Scanner detection for submitted file 2->55 57 5 other signatures 2->57 10 bbb.exe 1 4 2->10         started        14 huss.exe 1 2->14         started        process3 file4 41 C:\Users\user\AppData\Local\huss.exe, PE32 10->41 dropped 43 C:\Users\user\...\huss.exe:Zone.Identifier, ASCII 10->43 dropped 45 C:\Users\user\AppData\Local\...\bbb.exe.log, ASCII 10->45 dropped 59 Tries to detect virtualization through RDTSC time measurements 10->59 16 bbb.exe 10->16         started        19 cmd.exe 1 10->19         started        61 Antivirus detection for dropped file 14->61 63 Multi AV Scanner detection for dropped file 14->63 65 Machine Learning detection for dropped file 14->65 21 cmd.exe 1 14->21         started        signatures5 process6 signatures7 47 Modifies the context of a thread in another process (thread injection) 16->47 49 Maps a DLL or memory area into another process 16->49 23 explorer.exe 16->23 injected 25 conhost.exe 19->25         started        27 timeout.exe 1 19->27         started        29 conhost.exe 21->29         started        31 timeout.exe 1 21->31         started        process8 process9 33 huss.exe 1 23->33         started        process10 35 cmd.exe 1 33->35         started        process11 37 conhost.exe 35->37         started        39 timeout.exe 1 35->39         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/aa112ed45fdbe4d9e70479dce507d4c8b3d5ceae3d2107e83d87a7c84eac6294/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-02-24 10:44:48 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:8gce loader persistence rat
Link:
https://tria.ge/reports/220224-r6e9vadbg3/
Behaviour
Delays execution with timeout.exe
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Deletes itself
Xloader Payload
Xloader
Unpacked files
SH256 hash:
acb00a69a547805590e395c6cae9d0db1066413cc3111429261d5c824dbdfeb8
MD5 hash:
b536cdee196cd3dc45e4065ba531ef3a
SHA1 hash:
d70a66ec408ee053b904cfa4a66f0e5bccfb6e4e
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/fbca7cd4-dfb8-49d5-82f3-7f5e0d8e9c4d/
SH256 hash:
fa4ba25d853f127eaff8f781820ff2e993bfc16aaad99977844c0eccf1db92c9
MD5 hash:
5a18996f3aa33a7c4d43a53648cdfb01
SHA1 hash:
e0bebcbdcdd133242676a1d6e93db358f13c4afc
Link:
https://www.unpac.me/results/fbca7cd4-dfb8-49d5-82f3-7f5e0d8e9c4d/
SH256 hash:
ac1c526fdd3e3e95d7406c89de0e6bf0174485a62f732f17182911129af85791
MD5 hash:
da936e31b571f59b43c8872256ad96f7
SHA1 hash:
86a0c8789abbbb7105e1381a8db2f2467d294919
Link:
https://www.unpac.me/results/fbca7cd4-dfb8-49d5-82f3-7f5e0d8e9c4d/
SH256 hash:
aa112ed45fdbe4d9e70479dce507d4c8b3d5ceae3d2107e83d87a7c84eac6294
MD5 hash:
229a0d84ac897a99d5df4283414abf6f
SHA1 hash:
f7bbeb4d67502e7f28d81a4baa2fe0128f036db3
Link:
https://www.unpac.me/results/fbca7cd4-dfb8-49d5-82f3-7f5e0d8e9c4d/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/aa112ed45fdb/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/aa112ed45fdbe4d9e70479dce507d4c8b3d5ceae3d2107e83d87a7c84eac6294

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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Typical_Malware_String_Transforms
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research

File information

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

  
Delivery method
Other
  
URLhaus
https://urlhaus.abuse.ch/url/2055855/
  
URLhaus
https://urlhaus.abuse.ch/url/2055536/
Cape
Cape
https://www.capesandbox.com/analysis/244359/
  
URLhaus
https://urlhaus.abuse.ch/url/2058391/

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