MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c91c2f084fcad441661842ee87995440960cda62391d260e5ff572f400d883af. 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: 18


Intelligence 18 IOCs YARA 4 File information Comments
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SHA256 hash: c91c2f084fcad441661842ee87995440960cda62391d260e5ff572f400d883af
SHA3-384 hash: ad434f2f412ca10255e0af5c101e7b18ed012eeac2d382806154a488fbebfc20eec1f79dd1e61b96fbf16d90ec19048a
SHA1 hash: fbeb1c2c56f0b5f7c5aacfe6ffd1b09a961a10b2
MD5 hash: b8ee689052dfbe72f275dcae7df2e31c
humanhash: twelve-table-cup-table
File name:Documento di richiesta di preventivo NR_531 28 05 24.exe
Download: download sample
Signature Formbook
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File size:628'736 bytes
First seen:2024-05-28 17:43:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:mfCVUdm3+uNWMshlyN1bwYhhkK71YOvkFnSI+9+no5B0cN9Om:miUY3+uYMshlyN1bwM6AvMFc9c5crB
TLSH T1E6D4232572F18056EB6C4F7805B3998682F5F1467DB4F78C5CA692CD46BBB072230B2B
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon e8963351513b8ee8 (9 x AgentTesla, 4 x Formbook, 1 x Neshta)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
328
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c91c2f084fcad441661842ee87995440960cda62391d260e5ff572f400d883af.exe
Verdict:
Malicious activity
Analysis date:
2024-05-28 18:11:25 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/fccee96c-92a2-4a69-9bce-fe4152fac326

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.21379.13662.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6656198f3d0e5a324e765623win7simulatehigh_evasion
Tags:
Banker Encryption Execution Swotter Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching the process to change network settings
Launching cmd.exe command interpreter
Setting browser functions hooks
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/665617f3fce7975594f8d1bf/reports/cfb49d09-67c7-4fbe-846c-57a6c36295c0/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c91c2f084fcad441661842ee87995440960cda62391d260e5ff572f400d883af
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/d50578c8-e6ee-4a75-bee2-8123c41f29a6
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1448799
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
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)
Reads the DNS cache
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1448799 Sample: Documento di richiesta di p... Startdate: 29/05/2024 Architecture: WINDOWS Score: 100 34 www.onesource.live 2->34 36 www.kaskusbagus.com 2->36 38 4 other IPs or domains 2->38 44 Snort IDS alert for network traffic 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 14 other signatures 2->50 11 Documento di richiesta di preventivo NR_531 28 05 24.exe 4 2->11         started        signatures3 process4 signatures5 56 Adds a directory exclusion to Windows Defender 11->56 58 Injects a PE file into a foreign processes 11->58 14 Documento di richiesta di preventivo NR_531 28 05 24.exe 11->14         started        17 powershell.exe 23 11->17         started        19 Documento di richiesta di preventivo NR_531 28 05 24.exe 11->19         started        process6 signatures7 68 Modifies the context of a thread in another process (thread injection) 14->68 70 Maps a DLL or memory area into another process 14->70 72 Sample uses process hollowing technique 14->72 74 Queues an APC in another process (thread injection) 14->74 21 explorer.exe 33 1 14->21 injected 76 Loading BitLocker PowerShell Module 17->76 25 conhost.exe 17->25         started        process8 dnsIp9 40 www.kaskusbagus.com 104.21.95.130, 54035, 80 CLOUDFLARENETUS United States 21->40 42 www.onesource.live 185.83.214.222, 54037, 80 ANONYMIZEEpikNetworkCH Portugal 21->42 52 System process connects to network (likely due to code injection or exploit) 21->52 54 Uses ipconfig to lookup or modify the Windows network settings 21->54 27 ipconfig.exe 21->27         started        signatures10 process11 signatures12 60 Modifies the context of a thread in another process (thread injection) 27->60 62 Reads the DNS cache 27->62 64 Maps a DLL or memory area into another process 27->64 66 Tries to detect virtualization through RDTSC time measurements 27->66 30 cmd.exe 1 27->30         started        process13 process14 32 conhost.exe 30->32         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c91c2f084fcad441661842ee87995440960cda62391d260e5ff572f400d883af
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/c91c2f084fcad441661842ee87995440960cda62391d260e5ff572f400d883af/
Threat name:
Win32.Trojan.Leonem
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Status:
Malicious
First seen:
2024-05-28 17:44:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zeoc6ccpzlkeczqyilxipgkuiclazwtcheosmds76vzpiagyqoxq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:pz12 execution rat spyware stealer trojan
Link:
https://tria.ge/reports/240528-wa6jdadg3t/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6b4afca5-5258-4a2b-b067-5961a52bea3d
Unpacked files
SH256 hash:
0b20fb89c6efad8f81691293666d012b1401a92cf1826cc221552bb13158693f
MD5 hash:
96e228ff2b554adf664f368c8b3b2bc6
SHA1 hash:
5b03d91eb65047fb99296e96b08e252622037596
Detections:
FormBook
Create hunting rule
win_formbook_w0
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win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/a9e05b59-e215-4e0f-97e1-cb1612e63951/
Parent samples :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 hash:
173dcb9a6a595215d3d1a299fc03929baf45ce1949e37181d99beea32b5e970e
MD5 hash:
f009e8481c265aacf1a494d7d202f4ad
SHA1 hash:
5da33105832a8288959e85363fe88bf2b8193d6f
Link:
https://www.unpac.me/results/a9e05b59-e215-4e0f-97e1-cb1612e63951/
SH256 hash:
798c0aa7ab8e7f9ac228b9b3fea37fc5d708b6509d35c63d28e3ffd020e4cc7d
MD5 hash:
61f47e36db9303ac30bbdcd72ab702c7
SHA1 hash:
3338e0cdd8c9a87df5cb0414b4818703dc0650be
Link:
https://www.unpac.me/results/a9e05b59-e215-4e0f-97e1-cb1612e63951/
SH256 hash:
44a86ddbe0e7791f5608310130777118619f5a5067e4cf0d55bdee727463c179
MD5 hash:
61007e293f83eb83e89a37365839cf59
SHA1 hash:
2a94c04950686f68f832f83da5d0e8e09bc5c9c3
Link:
https://www.unpac.me/results/a9e05b59-e215-4e0f-97e1-cb1612e63951/
SH256 hash:
c91c2f084fcad441661842ee87995440960cda62391d260e5ff572f400d883af
MD5 hash:
b8ee689052dfbe72f275dcae7df2e31c
SHA1 hash:
fbeb1c2c56f0b5f7c5aacfe6ffd1b09a961a10b2
Link:
https://www.unpac.me/results/a9e05b59-e215-4e0f-97e1-cb1612e63951/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c91c2f084fca/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c91c2f084fcad441661842ee87995440960cda62391d260e5ff572f400d883af

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: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: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.

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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