MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a725162020873c30288047a60ac4fbe92f96e4393ec7b6cf36a38fd0eeb0e25f. 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: 16


Intelligence 16 IOCs YARA 17 File information Comments
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SHA256 hash: a725162020873c30288047a60ac4fbe92f96e4393ec7b6cf36a38fd0eeb0e25f
SHA3-384 hash: f07921ed90181adc2991919900081451f6e83b2193ddd0006f72743fa6f9aaf0bbc809602f6b4cae8d5ae63cbe390ae8
SHA1 hash: 5f051d6a6afba1f37d21a0709cac93063f5c2c17
MD5 hash: e6da90f18dfb7deccffa9891b377cae0
humanhash: carbon-muppet-two-cold
File name:RFQ#GT4186731.pdf.exe
Download: download sample
Signature Formbook
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File size:1'030'144 bytes
First seen:2024-02-01 17:19:46 UTC
Last seen:2024-02-01 21:38:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:4MyULxdbrDKl0SnKbIvozla8iz1m4SPA:dD6K0v/z1tcA
TLSH T18A25D0852AB45F10F93EABF540250100E374796B752FEB4DDEC0A0FA1EBAB414E96B17
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
308
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
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ID:
1
File name:
a725162020873c30288047a60ac4fbe92f96e4393ec7b6cf36a38fd0eeb0e25f.exe
Verdict:
Malicious activity
Analysis date:
2024-02-01 17:21:38 UTC
Tags:
evasion stealer agenttesla
Link:
https://app.any.run/tasks/53a01554-9db2-45bf-8b36-61bef179fde4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTesla
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Link:
https://www.capesandbox.com/analysis/474074/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.29503.30194.UNOFFICIAL
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Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65bbd2cab012cce0edb87902/reports/64e38074-f2da-44e7-8327-b16414b068b6/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a725162020873c30288047a60ac4fbe92f96e4393ec7b6cf36a38fd0eeb0e25f
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/1d5b010e-74d3-4c78-b27b-bdbfdd0a6c4f
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/1385070
Signature
.NET source code contains method to dynamically call methods (often used by packers)
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
Initial sample is a PE file and has a suspicious name
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)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Suspicious Double Extension File Execution
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 an obfuscated file name to hide its real file extension (double extension)
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: 1385070 Sample: RFQ#GT4186731.pdf.exe Startdate: 01/02/2024 Architecture: WINDOWS Score: 100 42 us2.smtp.mailhostbox.com 2->42 44 ip-api.com 2->44 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 Sigma detected: Scheduled temp file as task from temp location 2->54 56 13 other signatures 2->56 8 RFQ#GT4186731.pdf.exe 7 2->8         started        12 GEFasznBV.exe 5 2->12         started        signatures3 process4 file5 38 C:\Users\user\AppData\RoamingbehaviorgraphEFasznBV.exe, PE32 8->38 dropped 40 C:\Users\user\AppData\Local\...\tmpABC7.tmp, XML 8->40 dropped 58 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->58 60 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->60 62 Uses schtasks.exe or at.exe to add and modify task schedules 8->62 70 2 other signatures 8->70 14 RFQ#GT4186731.pdf.exe 15 2 8->14         started        18 powershell.exe 22 8->18         started        20 powershell.exe 23 8->20         started        22 schtasks.exe 1 8->22         started        64 Multi AV Scanner detection for dropped file 12->64 66 Machine Learning detection for dropped file 12->66 68 Injects a PE file into a foreign processes 12->68 24 GEFasznBV.exe 12->24         started        26 schtasks.exe 12->26         started        signatures6 process7 dnsIp8 46 ip-api.com 208.95.112.1, 49732, 49736, 80 TUT-ASUS United States 14->46 48 us2.smtp.mailhostbox.com 208.91.199.223, 49733, 49737, 587 PUBLIC-DOMAIN-REGISTRYUS United States 14->48 28 conhost.exe 18->28         started        30 WmiPrvSE.exe 18->30         started        32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        72 Tries to steal Mail credentials (via file / registry access) 24->72 74 Tries to harvest and steal browser information (history, passwords, etc) 24->74 36 conhost.exe 26->36         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a725162020873c30288047a60ac4fbe92f96e4393ec7b6cf36a38fd0eeb0e25f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a725162020873c30288047a60ac4fbe92f96e4393ec7b6cf36a38fd0eeb0e25f/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2024-02-01 08:43:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=u4srmibaq46dakeai6tavrh35exznzbzh3d3ntzwuoh5b3vq4jpq._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/240201-vwegcaagd4/
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:
d2cf3273461ffa1b29715828f358368312ae4f08a731f4e449a44f6dc50e26c5
MD5 hash:
df7936d5ea0c80f3003b445c7f8deb44
SHA1 hash:
b995b22e77a11cda256e84a01ccadb85451460ed
Link:
https://www.unpac.me/results/963dddaf-cf47-453a-bd90-746f1f216831/
SH256 hash:
a91462e9c8e5d78d4047a80eb89a38c6e76e5d4cf6ac8ff7142e19bb7ecfbb82
MD5 hash:
b3200a8295f2098fa0078754ab6728ce
SHA1 hash:
b84d3cbebfd2eb9822664ca47fe56e6ee95e0ddc
Link:
https://www.unpac.me/results/963dddaf-cf47-453a-bd90-746f1f216831/
SH256 hash:
b67fd79a0a14d5e3aca0367018b70a4afb20fa26970a6780af57de49d40f5a29
MD5 hash:
26263d1e27d175692315f40959a38c85
SHA1 hash:
7d54b2a9dfca5897d9bb00b4a6a01b2e26a134c8
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
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/963dddaf-cf47-453a-bd90-746f1f216831/
Parent samples :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 hash:
754b069edf8b3d5776154c1d54328591ecca99e88cebe7ea652e2f3c659e5473
MD5 hash:
4dbe8b804bc8d1d3e702c2c4915019fd
SHA1 hash:
713b6719a369099207ac825c5086c6891ceda2f3
Link:
https://www.unpac.me/results/963dddaf-cf47-453a-bd90-746f1f216831/
SH256 hash:
3014b859be7cafca84f61ab3398e0832d80175d76dc6ff4a45df7b2fef39dcaf
MD5 hash:
17cbde8bc5d57e164c1daa95d1b37d0b
SHA1 hash:
4856da540fd30d018fa511c9ce705871e1e2affa
Link:
https://www.unpac.me/results/963dddaf-cf47-453a-bd90-746f1f216831/
SH256 hash:
a725162020873c30288047a60ac4fbe92f96e4393ec7b6cf36a38fd0eeb0e25f
MD5 hash:
e6da90f18dfb7deccffa9891b377cae0
SHA1 hash:
5f051d6a6afba1f37d21a0709cac93063f5c2c17
Link:
https://www.unpac.me/results/963dddaf-cf47-453a-bd90-746f1f216831/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a72516202087/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/a725162020873c30288047a60ac4fbe92f96e4393ec7b6cf36a38fd0eeb0e25f

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
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
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
Create hunting rule
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
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
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
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 a725162020873c30288047a60ac4fbe92f96e4393ec7b6cf36a38fd0eeb0e25f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/474074/

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