MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3911ca0a3ba01ed03c568bf9e8dba24af0a2d0c4cd05cc4d453d17729f2feace. 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: 12


Intelligence 12 IOCs YARA 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3911ca0a3ba01ed03c568bf9e8dba24af0a2d0c4cd05cc4d453d17729f2feace
SHA3-384 hash: 58928b5839b5b7893d07c0bd5f40e6e3cd12365ce0e031e787900b4314cc9b3916bbc938e2418cd24bae07c7b1a9e007
SHA1 hash: 8aa8309adfc4e8e75cf7b1421bccf4120b01693c
MD5 hash: 4160db87b054d159be5eb8ee4cd27c38
humanhash: rugby-seventeen-avocado-michigan
File name:SecuriteInfo.com.Trojan.PackedNET.2511.6175.21372
Download: download sample
Signature Formbook
Create hunting rule
File size:706'560 bytes
First seen:2024-04-30 09:21:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:jPkB778Q4fgxzL/1q+ahzvjnBeaUYDVpxpiLG8ofzR+pY0L515MeMLDQe0u:LkBq4xf1q+qVfpiXuMpLBMLD7
Threatray 667 similar samples on MalwareBazaar
TLSH T1E5E4239815ACD3A1F1EECFF15FB140059778550FB9A2EE8E4AC031DE78227C58990DAB
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 4018f9e960e20464 (19 x AgentTesla, 6 x Formbook, 2 x PureLogsStealer)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
326
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
3911ca0a3ba01ed03c568bf9e8dba24af0a2d0c4cd05cc4d453d17729f2feace.exe
Verdict:
Malicious activity
Analysis date:
2024-04-30 09:25:03 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c5524c1d-7917-447f-a8ae-780f181e613c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6630b84747bfd8641ebb1369/reports/3e6067d4-21e9-49c5-9360-a7eb8588b4db/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/3911ca0a3ba01ed03c568bf9e8dba24af0a2d0c4cd05cc4d453d17729f2feace
Malware family:
MSIL Injector
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e874ba5a-824e-4a0c-857e-bacd9aaa5147
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1433955
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3911ca0a3ba01ed03c568bf9e8dba24af0a2d0c4cd05cc4d453d17729f2feace
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3911ca0a3ba01ed03c568bf9e8dba24af0a2d0c4cd05cc4d453d17729f2feace/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2024-04-29 03:47:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hei4ucr3uapnapcwrp46rw5cjlykfugezuc4ytkfhulxfhzp5lha._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
65568cb4787ff10ab578303eb912096f39b1565eabcc74263502e8e3540aec73
Formbook
690955d5af76a8aaac2f4d703f182b0b2d42939d13dce8783313a232ed942719
Formbook
7792832df2942aa6a7d7085f7b03b219ba7525c4d48deba292b9c03b0bc75ce2
Formbook
88f28e5053f90a2b68e11f599f4136eaf462c9ad3cf319c96882f5b19386aef1
Formbook
a39d4b589dc608fa2dfc06259a2d15b9a7edd2ed8d0a3adde6b71151db0a7102
Formbook
bf1f882e2a1d0e35207cd7cab867bffe933e134e43ff317acf2db538bd4d7210
Formbook
cd00f31be2b7bb08d5e499cbe39d3ab9d5aac66ba0a5e5ffc3e97bd9cc598fc1
Formbook
e6d6e42a6b67e3fdad165a4a0b5659773c3212c3aac6d323c30bea339da8f686
Formbook
e71687f19b2f1b17c4d27477060fa3bb424c77c1ed4163187dd7dbba691a04d8
Formbook
fc0b4a0d0cddb4abdc8288fbdd5331e8805779750648be80e17f0e9adbaec27c
Formbook
+ 657 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240430-lbw18ahc41/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
e08bb2b80f39275d7d6f8271e74297c045f6204f38965bfeb6c769d4e41dee61
MD5 hash:
4c3a1c4ed9476afd277e313de232ed7b
SHA1 hash:
35f383d6a7e380e130c13e58fe28cf7dd1ccf58b
Link:
https://www.unpac.me/results/26deec05-dc2a-4fe2-919f-a7a6cfe9bce3/
SH256 hash:
9ab44336265e9dbe3a754883786aaf4757aac5ba2c76364d6e783efae16a484d
MD5 hash:
0d02edae23ab1f43b0e52b4bd52e9702
SHA1 hash:
db555b9e403e2fb87685f8dd19012b306c105c76
Link:
https://www.unpac.me/results/26deec05-dc2a-4fe2-919f-a7a6cfe9bce3/
SH256 hash:
3b4228e38159e257ca1d8d227ed82016eebc8bf607baee1be4ab05ae3853ab45
MD5 hash:
30d656d124aa1761e4793b6381d321e3
SHA1 hash:
a0fdc77cb3798de6fc65b08ca1ca6e9dd216e586
Link:
https://www.unpac.me/results/26deec05-dc2a-4fe2-919f-a7a6cfe9bce3/
SH256 hash:
98e9d63c8c9ee2c9dfebd36f8d0a50caf92151b2df7263d75106d27f8947ac57
MD5 hash:
189544e249e502b7b98ceb21701485e0
SHA1 hash:
a03ea293777faee8af6f006579c2a25e14977d04
Link:
https://www.unpac.me/results/26deec05-dc2a-4fe2-919f-a7a6cfe9bce3/
SH256 hash:
687936eb4c9688bad852b1e60de5920db57da65c8a69835a8e21c2bd7f4b4360
MD5 hash:
fe9b2fede1ac05053a4c9b0c81616a6c
SHA1 hash:
5c74602dc2cbc515fb0cbd58a67b249ea2850a81
Link:
https://www.unpac.me/results/26deec05-dc2a-4fe2-919f-a7a6cfe9bce3/
SH256 hash:
3911ca0a3ba01ed03c568bf9e8dba24af0a2d0c4cd05cc4d453d17729f2feace
MD5 hash:
4160db87b054d159be5eb8ee4cd27c38
SHA1 hash:
8aa8309adfc4e8e75cf7b1421bccf4120b01693c
Link:
https://www.unpac.me/results/26deec05-dc2a-4fe2-919f-a7a6cfe9bce3/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3911ca0a3ba0/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/3911ca0a3ba01ed03c568bf9e8dba24af0a2d0c4cd05cc4d453d17729f2feace

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:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Web download

Formbook

Executable exe 3911ca0a3ba01ed03c568bf9e8dba24af0a2d0c4cd05cc4d453d17729f2feace

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2832452/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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