MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bdf27a5c5327e39ec2d7b3a6a7c5068b68f0d0e46791c7afad0ecd6b1a803ef5. 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 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bdf27a5c5327e39ec2d7b3a6a7c5068b68f0d0e46791c7afad0ecd6b1a803ef5
SHA3-384 hash: f643b597fd71140c773309193d6a4072d7b212c84d418c5a3a3784f426224c158709701468d7992a714b1ecb269b956d
SHA1 hash: 0d9ace40ea7f20239f4df694306ae9d85e6fb0cc
MD5 hash: 255888a3c4a506330ea337474c6e7359
humanhash: hydrogen-violet-delta-glucose
File name:Quote for Urgent Purchase Order_pdf.img.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:709'632 bytes
First seen:2024-02-27 16:22:50 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 12288:eazScVt/uoFrfWrR7gKQEtaJjAmRP4ocUxXNhGdwYdnqiOoOqFowmg:/zSOtPfWF7gKQMaJjAmWojGdLtOoOqWw
Threatray 446 similar samples on MalwareBazaar
TLSH T13FE423293FAED31BC57F0C781CB4900C4EB915456388F1CEEEE6A21D4291B765254BBB
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon f0a2aae48ae4e29a (11 x AgentTesla, 3 x Formbook, 1 x PureLogsStealer)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
326
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
bdf27a5c5327e39ec2d7b3a6a7c5068b68f0d0e46791c7afad0ecd6b1a803ef5.exe
Verdict:
Malicious activity
Analysis date:
2024-02-27 16:31:55 UTC
Tags:
evasion stealer agenttesla
Link:
https://app.any.run/tasks/80943a26-9690-4990-9fa7-7be020c5bb95

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/478026/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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
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
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:
keylogger masquerade packed
Link:
https://www.filescan.io/uploads/65de0c6b26f1ddc579ac539b/reports/18b7760a-91f6-4933-afdc-44d490d2ca8c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/bdf27a5c5327e39ec2d7b3a6a7c5068b68f0d0e46791c7afad0ecd6b1a803ef5
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/4a674dee-feb9-4872-9a81-7a6d92db4e4e
Result
Threat name:
AgentTesla, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1399723
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
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
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
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: 1399723 Sample: Quote for Urgent Purchase O... Startdate: 27/02/2024 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 17 other signatures 2->56 8 bYNJaHSqQU.exe 5 2->8         started        11 Quote for Urgent Purchase Order_pdf.img.exe 7 2->11         started        signatures3 process4 file5 58 Multi AV Scanner detection for dropped file 8->58 60 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->60 62 Machine Learning detection for dropped file 8->62 14 bYNJaHSqQU.exe 8->14         started        17 schtasks.exe 8->17         started        38 C:\Users\user\AppData\...\bYNJaHSqQU.exe, PE32 11->38 dropped 40 C:\Users\user\AppData\Local\...\tmp2EDD.tmp, XML 11->40 dropped 64 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 11->64 66 Adds a directory exclusion to Windows Defender 11->66 19 Quote for Urgent Purchase Order_pdf.img.exe 15 2 11->19         started        22 powershell.exe 23 11->22         started        24 powershell.exe 22 11->24         started        26 2 other processes 11->26 signatures6 process7 dnsIp8 68 Tries to steal Mail credentials (via file / registry access) 14->68 70 Tries to harvest and steal browser information (history, passwords, etc) 14->70 28 conhost.exe 17->28         started        46 ip-api.com 208.95.112.1, 49707, 49711, 80 TUT-ASUS United States 19->46 48 us2.smtp.mailhostbox.com 208.91.199.224, 49708, 49712, 587 PUBLIC-DOMAIN-REGISTRYUS United States 19->48 30 conhost.exe 22->30         started        32 WmiPrvSE.exe 22->32         started        34 conhost.exe 24->34         started        36 conhost.exe 26->36         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/bdf27a5c5327e39ec2d7b3a6a7c5068b68f0d0e46791c7afad0ecd6b1a803ef5
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bdf27a5c5327e39ec2d7b3a6a7c5068b68f0d0e46791c7afad0ecd6b1a803ef5/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-02-27 10:12:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
24
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xxzhuxcte7rz5qwxwotkprigrnupbuhem6i4pl5nb3gwwguah32q._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
03eaf5508873192e98217c09dd3c737fe090039e216f78748a88334d20c1dbb0
Formbook
5e8119622389d8ee840a2e9429a31d5fad907bd25c2fff9e81f969a6111af092
Formbook
b6fe0d57586bbf9ea1494db1b418684d467d92efdfc8f94ba9760acb410dabbc
Formbook
e1b2bdcecafc712713647e95e0a5eb4f66c180d2fe0a357016772a85f7a0b86c
Formbook
+ 436 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240227-tvsf5sdg67/
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:
72638f4b30cc9dab51d31216991957bf1cd118b8a8743227b3e8f9c4805f7628
MD5 hash:
2a8240bba06e832ee5d136a0a7e5b5b9
SHA1 hash:
de49d9b33004a4a622a4279b3ee2b3e3e5cd012b
Link:
https://www.unpac.me/results/d69b2acb-51ae-4413-94d8-45de0f9a840e/
SH256 hash:
3a7f3c6236a091eac1fead27994a7c80cc0052d8d79ff0692fe7ed46b8fbabb6
MD5 hash:
ce2cdd55d3b0e3c01c455f7be5f9bb41
SHA1 hash:
d20466beea661c449067568c2457cdf0427cd4b9
Link:
https://www.unpac.me/results/d69b2acb-51ae-4413-94d8-45de0f9a840e/
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
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/d69b2acb-51ae-4413-94d8-45de0f9a840e/
Parent samples :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 hash:
0190398cd1ee7458b2ad4de5bae10989d4f63420c848cc3c80a3c69296dc383f
MD5 hash:
970503effbe2981f2044430e63d4fb4e
SHA1 hash:
5a4c26491580bd7f79c8a4805ef36e9ecf3f1556
Link:
https://www.unpac.me/results/d69b2acb-51ae-4413-94d8-45de0f9a840e/
SH256 hash:
bdf27a5c5327e39ec2d7b3a6a7c5068b68f0d0e46791c7afad0ecd6b1a803ef5
MD5 hash:
255888a3c4a506330ea337474c6e7359
SHA1 hash:
0d9ace40ea7f20239f4df694306ae9d85e6fb0cc
Link:
https://www.unpac.me/results/d69b2acb-51ae-4413-94d8-45de0f9a840e/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bdf27a5c5327/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/bdf27a5c5327e39ec2d7b3a6a7c5068b68f0d0e46791c7afad0ecd6b1a803ef5

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: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
Reference:https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information

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

Malspam

Formbook

Executable exe bdf27a5c5327e39ec2d7b3a6a7c5068b68f0d0e46791c7afad0ecd6b1a803ef5

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/478026/

Comments