MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb6a4b5aab97593c346510868f58e2a8a84714d60ca7136580daf87ce2dddf18. 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: 17


Intelligence 17 IOCs YARA 16 File information Comments
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SHA256 hash: bb6a4b5aab97593c346510868f58e2a8a84714d60ca7136580daf87ce2dddf18
SHA3-384 hash: 4f7ffa460dc132cf734d9b6ca407ee77da4d97828d972fa872a967da5d6894d1c55acc6a0f04505db4d179867e579ea1
SHA1 hash: 5134a20a3bf528086dbce150ba67d80cd719b5c1
MD5 hash: 836a5b1a75977ad0c38bf91b5f2b4830
humanhash: network-harry-virginia-chicken
File name:Yeni Sat-nalma Sipari+i.scr
Download: download sample
Signature Formbook
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File size:692'224 bytes
First seen:2024-02-14 13:04:30 UTC
Last seen:2024-02-14 14:31:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:qiD29aluVzxR/SNoa3v39zE85cuOmn8mS1avBoPt4wolr0:0uezDa3Fwbmn8mStt4z
TLSH T1A4E42374B59C9B42EEDC53FE347656E00BF9260DE552CF0A9EC220E35C95FA018B225B
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 3492d06974b47c0c (7 x Formbook, 4 x AgentTesla, 1 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe FormBook geo scr TUR

Intelligence

File Origin
# of uploads :
2
# of downloads :
290
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
agenttesla
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ID:
1
File name:
bb6a4b5aab97593c346510868f58e2a8a84714d60ca7136580daf87ce2dddf18.exe
Verdict:
Malicious activity
Analysis date:
2024-02-14 13:47:09 UTC
Tags:
evasion stealer agenttesla
Link:
https://app.any.run/tasks/289713de-1649-480c-9aab-68e78d9592c9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/476155/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2680.1366.20793.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Reading critical registry keys
Sending a custom TCP request
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65ccba8a90a5367ac0c4cadb/reports/98193d05-ec43-439e-91e4-ecba3a2ef8c1/overview
Verdict:
Malicious
Labled as:
Variadic.A.410.Generic
Link:
https://www.hybrid-analysis.com/sample/bb6a4b5aab97593c346510868f58e2a8a84714d60ca7136580daf87ce2dddf18
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/14395377-ef11-4352-9195-df9ded90fbe2
Result
Threat name:
AgentTesla, PureLog Stealer
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1392147
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
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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
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)
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
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 steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1392147 Sample: Yeni Sat-nalma Sipari+i.scr.exe Startdate: 14/02/2024 Architecture: WINDOWS Score: 100 44 us2.smtp.mailhostbox.com 2->44 46 ip-api.com 2->46 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 Antivirus / Scanner detection for submitted sample 2->56 58 18 other signatures 2->58 8 xOmWSYWAqJcv.exe 5 2->8         started        11 Yeni Sat-nalma Sipari+i.scr.exe 7 2->11         started        signatures3 process4 file5 60 Antivirus detection for dropped file 8->60 62 Multi AV Scanner detection for dropped file 8->62 64 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->64 66 Machine Learning detection for dropped file 8->66 14 xOmWSYWAqJcv.exe 14 2 8->14         started        17 schtasks.exe 1 8->17         started        19 xOmWSYWAqJcv.exe 8->19         started        28 2 other processes 8->28 40 C:\Users\user\AppData\...\xOmWSYWAqJcv.exe, PE32 11->40 dropped 42 C:\Users\user\AppData\Local\...\tmpF7DB.tmp, XML 11->42 dropped 68 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 11->68 70 Adds a directory exclusion to Windows Defender 11->70 72 Injects a PE file into a foreign processes 11->72 21 Yeni Sat-nalma Sipari+i.scr.exe 15 2 11->21         started        24 powershell.exe 23 11->24         started        26 schtasks.exe 1 11->26         started        30 2 other processes 11->30 signatures6 process7 dnsIp8 74 Tries to steal Mail credentials (via file / registry access) 14->74 76 Tries to harvest and steal browser information (history, passwords, etc) 14->76 32 conhost.exe 17->32         started        48 ip-api.com 208.95.112.1, 49708, 49712, 80 TUT-ASUS United States 21->48 50 us2.smtp.mailhostbox.com 208.91.199.225, 49709, 49713, 587 PUBLIC-DOMAIN-REGISTRYUS United States 21->50 34 WmiPrvSE.exe 24->34         started        36 conhost.exe 24->36         started        38 conhost.exe 26->38         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/bb6a4b5aab97593c346510868f58e2a8a84714d60ca7136580daf87ce2dddf18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bb6a4b5aab97593c346510868f58e2a8a84714d60ca7136580daf87ce2dddf18/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
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Status:
Malicious
First seen:
2024-02-14 01:54:50 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
21 of 24 (87.50%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xnvewwvls5mtyndfccdi6whcvcueofgwbstrgzma3l4hzyw534ma._file
Verdict:
malicious
Label(s):
agenttesla_v4
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agenttesla
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Result
Malware family:
agenttesla
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Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240214-qbjhcabc8x/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
0eba1c17840f85fa1fb6f8fdad59d6d0b0f3d1f92210374ee8903bcf5817b827
MD5 hash:
ea2175cf25032b9a63bf694093a7ef2c
SHA1 hash:
afc58bdfa16caf74f9d25a361e6b533569e218d8
Link:
https://www.unpac.me/results/ea686fa7-0cc6-43e4-a138-bbb000633721/
SH256 hash:
e9c028ecb36a6fb2e3a9f2ce8e58fa444649dd3c47039765cca1967dcc99ef3b
MD5 hash:
65e87dc385029fc40a1d83797b7fbbae
SHA1 hash:
96ee40ce767bf100c7f5c7eb38eda137a9ecd6e5
Detections:
AgentTesla
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win_agent_tesla_g2
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INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
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Agenttesla_type2
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INDICATOR_SUSPICIOUS_Binary_References_Browsers
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INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
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INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
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INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
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INDICATOR_EXE_Packed_GEN01
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INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
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Link:
https://www.unpac.me/results/ea686fa7-0cc6-43e4-a138-bbb000633721/
Parent samples :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 hash:
d5e54ac29044ea48c678a522e6d642294c7dfb119d9bc256f007348f08ea6eff
MD5 hash:
495e6660bcbbe2d96a0119d02a22b416
SHA1 hash:
7dccb189d7f1533a11b95da8908fb1a45cfc9dab
Link:
https://www.unpac.me/results/ea686fa7-0cc6-43e4-a138-bbb000633721/
SH256 hash:
d96063805403786f048dca7b5f56bd29ee0addf5a2a4315820f3316f532dfc47
MD5 hash:
19ec0a7fae3b0161c0fab239b5246afa
SHA1 hash:
226520dcef5782afd875e04cde30efe8bb1b8d54
Link:
https://www.unpac.me/results/ea686fa7-0cc6-43e4-a138-bbb000633721/
SH256 hash:
bb6a4b5aab97593c346510868f58e2a8a84714d60ca7136580daf87ce2dddf18
MD5 hash:
836a5b1a75977ad0c38bf91b5f2b4830
SHA1 hash:
5134a20a3bf528086dbce150ba67d80cd719b5c1
Link:
https://www.unpac.me/results/ea686fa7-0cc6-43e4-a138-bbb000633721/
Malware family:
AgentTesla
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bb6a4b5aab97/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/bb6a4b5aab97593c346510868f58e2a8a84714d60ca7136580daf87ce2dddf18

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:AgentTeslaV3
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Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:DebuggerCheck__RemoteAPI
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_GEN01
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Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
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Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
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Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
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Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
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Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
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Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
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Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
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Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:NET
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Author:malware-lu
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Create hunting rule
Author:Elastic Security

File information

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

Malspam

Formbook

Executable exe bb6a4b5aab97593c346510868f58e2a8a84714d60ca7136580daf87ce2dddf18

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/476155/

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