MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4497dccad8dd71580d730e2443277a37adeff3c32c3536d02dea3aed09fb3a76. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4497dccad8dd71580d730e2443277a37adeff3c32c3536d02dea3aed09fb3a76
SHA3-384 hash: 9a468541da4965e405808ab4b2465f40349d1ed7dfdeb331038ca580278ad7544098c86697360c802582270f88d014c6
SHA1 hash: 1528d5dc126c55e0fddf8fd4bf651775943a2aac
MD5 hash: 190e27e773f6dcde77a395fc954415f5
humanhash: utah-louisiana-mississippi-pennsylvania
File name:MEPAŞ E-Arşiv Fatura.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:760'832 bytes
First seen:2024-01-29 14:04:43 UTC
Last seen:2024-02-05 10:50:18 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:7AoIFFHgeg/cZ38R+ZUk0Jp2hy7n6OWwJzaw7F4nl0/K6RC+mtnPI8AHDqqkRnn0:7AXFxZMRzkqM9+mpl0/DY+mFINDkRw2
Threatray 5'100 similar samples on MalwareBazaar
TLSH T18BF4120133FCAB0ADEB797F52A50906053B5361B39A7E35D5DC6A0CE1932F8046A1F6B
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) (4505/5/1)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
291
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
4497dccad8dd71580d730e2443277a37adeff3c32c3536d02dea3aed09fb3a76.exe
Verdict:
Malicious activity
Analysis date:
2024-01-29 14:48:22 UTC
Tags:
evasion stealer agenttesla
Link:
https://app.any.run/tasks/7281e480-49c1-46bd-aafb-8b68a9afb728

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Filerepmalware-10019564-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Launching the default Windows debugger (dwwin.exe)
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4497dccad8dd71580d730e2443277a37adeff3c32c3536d02dea3aed09fb3a76
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8f91dacf-a738-4465-a37c-d4a9fafad1c0
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1382750
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Suspicious Process Patterns NTDS.DIT Exfil
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1382750 Sample: MEPA#U015e_E-Ar#U015fiv_Fat... Startdate: 29/01/2024 Architecture: WINDOWS Score: 100 42 api.telegram.org 2->42 44 ip-api.com 2->44 46 2 other IPs or domains 2->46 54 Snort IDS alert for network traffic 2->54 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 62 13 other signatures 2->62 8 MEPA#U015e_E-Ar#U015fiv_Fatura.exe 7 2->8         started        12 xAdFdAFt.exe 5 2->12         started        signatures3 60 Uses the Telegram API (likely for C&C communication) 42->60 process4 file5 38 C:\Users\user\AppData\Roaming\xAdFdAFt.exe, PE32 8->38 dropped 40 C:\Users\user\AppData\Local\Temp\tmpAC7.tmp, XML 8->40 dropped 64 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->64 66 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->66 68 Uses schtasks.exe or at.exe to add and modify task schedules 8->68 76 2 other signatures 8->76 14 MEPA#U015e_E-Ar#U015fiv_Fatura.exe 15 2 8->14         started        18 powershell.exe 23 8->18         started        20 powershell.exe 23 8->20         started        22 schtasks.exe 1 8->22         started        70 Multi AV Scanner detection for dropped file 12->70 72 Machine Learning detection for dropped file 12->72 74 Injects a PE file into a foreign processes 12->74 24 xAdFdAFt.exe 12->24         started        26 schtasks.exe 12->26         started        signatures6 process7 dnsIp8 48 api4.ipify.org 173.231.16.75, 443, 49708, 49713 WEBNXUS United States 14->48 50 ip-api.com 208.95.112.1, 49709, 49714, 80 TUT-ASUS United States 14->50 52 api.telegram.org 149.154.167.220, 443, 49710, 49715 TELEGRAMRU United Kingdom 14->52 78 Installs a global keyboard hook 14->78 28 conhost.exe 18->28         started        30 WmiPrvSE.exe 18->30         started        32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        80 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->80 82 Tries to steal Mail credentials (via file / registry access) 24->82 84 Tries to harvest and steal browser information (history, passwords, etc) 24->84 36 conhost.exe 26->36         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4497dccad8dd71580d730e2443277a37adeff3c32c3536d02dea3aed09fb3a76
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4497dccad8dd71580d730e2443277a37adeff3c32c3536d02dea3aed09fb3a76/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2024-01-29 10:22:33 UTC
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=isl5zswy3vyvqdltbysegj32g6w6746dfq2tnubn5i5o2cp3hj3a._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
18e7407574a68f77e1fae3d3c818d864b7a61b044e16805f684968335197cc7d
Formbook
22c9289584b472d01af24595a95083cc71d9fc1d273914d4c367e74add1c36e8
Formbook
4497dccad8dd71580d730e2443277a37adeff3c32c3536d02dea3aed09fb3a76
Formbook
57a28713c7beffa950e2b4a028d57b4d52dd1b3a523cfa2d47503564892b8aba
Formbook
d92da33493917017ff937789890dfacd02c22671abd9ea8c196ea9dfd90f3a72
Formbook
+ 5'090 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240129-rdvttschcq/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Checks computer location settings
Unpacked files
SH256 hash:
545aa6edf863523c8a9fe0e4e70474cbf679ab27efaea88bc05fbff5785c5a3d
MD5 hash:
932d3044c4f5e0512d093f91b5beebf2
SHA1 hash:
db48e9b569af22150eacef5211cdc3b2ebef34b0
Link:
https://www.unpac.me/results/4e4c576d-cdc2-4ea6-a6fe-a1bb1f504f7a/
SH256 hash:
3014b859be7cafca84f61ab3398e0832d80175d76dc6ff4a45df7b2fef39dcaf
MD5 hash:
17cbde8bc5d57e164c1daa95d1b37d0b
SHA1 hash:
4856da540fd30d018fa511c9ce705871e1e2affa
Link:
https://www.unpac.me/results/4e4c576d-cdc2-4ea6-a6fe-a1bb1f504f7a/
SH256 hash:
3512e50a7509ca8b120d7835c69302e5d739fa3651dd65485e5739a1cc991ede
MD5 hash:
8bc76b6253fe4689a874767bdefec712
SHA1 hash:
4642b756487c2e1878e7e03e32e77b51df0b3b3e
Link:
https://www.unpac.me/results/4e4c576d-cdc2-4ea6-a6fe-a1bb1f504f7a/
SH256 hash:
5810ecf7bdbf11f0e3c53618b35445b9d44341893a9c769e09f9b5ab69812be0
MD5 hash:
c2efb54f0a1a11e3a62d42ad8b955403
SHA1 hash:
3335d67e589d444edf7e582c268e2e93aa64ebc5
Detections:
win_agent_tesla_g2
Create hunting rule
Link:
https://www.unpac.me/results/4e4c576d-cdc2-4ea6-a6fe-a1bb1f504f7a/
SH256 hash:
4497dccad8dd71580d730e2443277a37adeff3c32c3536d02dea3aed09fb3a76
MD5 hash:
190e27e773f6dcde77a395fc954415f5
SHA1 hash:
1528d5dc126c55e0fddf8fd4bf651775943a2aac
Link:
https://www.unpac.me/results/4e4c576d-cdc2-4ea6-a6fe-a1bb1f504f7a/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4497dccad8dd/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/4497dccad8dd71580d730e2443277a37adeff3c32c3536d02dea3aed09fb3a76

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
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 4497dccad8dd71580d730e2443277a37adeff3c32c3536d02dea3aed09fb3a76

(this sample)

  
Delivery method
Distributed via e-mail attachment

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