MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c639e017b9f754cefda7c602d09997b1c70c5cb4fbe38b2e17888c2d3ab43c2e. 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 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c639e017b9f754cefda7c602d09997b1c70c5cb4fbe38b2e17888c2d3ab43c2e
SHA3-384 hash: cc28ef60ab18e5d73c63719d75abb780edcf8d31eb781b122abd95653aaaee1a5d58b5b0d2d0fd89ab1477ec9866cf15
SHA1 hash: a4bb409da8b6db9b8bfb5dd2a2815324d70d5629
MD5 hash: 4d42a037964800d73cf03755fb6acbf9
humanhash: tennis-washington-north-ohio
File name:SecuriteInfo.com.Win32.PWSX-gen.28701.10512
Download: download sample
Signature Formbook
Create hunting rule
File size:655'360 bytes
First seen:2024-02-08 08:32:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'746 x AgentTesla, 19'628 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:rExEd6lBjEAYhGZ9n0db4YnnJYsL4FOfSzOoDwscM5hUeK1yoZQOks3udelVy1xC:QxcJ+vcEAnJQ0fSzOoDLpbUHIqJhQs4r
Threatray 5'560 similar samples on MalwareBazaar
TLSH T1DBD4120A373DB51FCAAD45FB50B532502772F42A3686F3D58CD265E114CEBB88B02A67
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)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
282
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
c639e017b9f754cefda7c602d09997b1c70c5cb4fbe38b2e17888c2d3ab43c2e.exe
Verdict:
Malicious activity
Analysis date:
2024-02-08 08:36:53 UTC
Tags:
evasion stealer agenttesla
Link:
https://app.any.run/tasks/818cce72-bf9d-4d81-9dda-682a68cac81e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTesla
Create hunting rule
Link:
https://www.capesandbox.com/analysis/475342/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.28701.10512.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65c491cdbf0e860d2bdb8741/reports/f749a4ca-acef-490f-bcf1-c5abd0a43165/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c639e017b9f754cefda7c602d09997b1c70c5cb4fbe38b2e17888c2d3ab43c2e
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/bbbf4879-6764-4444-9950-66bc336886af
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1388911
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
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
Hides that the sample has been downloaded from the Internet (zone.identifier)
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: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
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 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
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1388911 Sample: SecuriteInfo.com.Win32.PWSX... Startdate: 08/02/2024 Architecture: WINDOWS Score: 100 53 mail.coperwire.com 2->53 55 ip-api.com 2->55 57 2 other IPs or domains 2->57 65 Found malware configuration 2->65 67 Malicious sample detected (through community Yara rule) 2->67 69 Antivirus / Scanner detection for submitted sample 2->69 71 13 other signatures 2->71 8 SecuriteInfo.com.Win32.PWSX-gen.28701.10512.exe 7 2->8         started        12 OQnEvX.exe 5 2->12         started        14 VLYdwNT.exe 2->14         started        16 VLYdwNT.exe 2->16         started        signatures3 process4 file5 49 C:\Users\user\AppData\Roaming\OQnEvX.exe, PE32 8->49 dropped 51 C:\Users\user\AppData\Local\...\tmp1FA7.tmp, XML 8->51 dropped 85 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->85 87 Uses schtasks.exe or at.exe to add and modify task schedules 8->87 89 Writes to foreign memory regions 8->89 97 3 other signatures 8->97 18 RegSvcs.exe 16 4 8->18         started        23 powershell.exe 23 8->23         started        25 powershell.exe 23 8->25         started        27 schtasks.exe 1 8->27         started        91 Antivirus detection for dropped file 12->91 93 Multi AV Scanner detection for dropped file 12->93 95 Machine Learning detection for dropped file 12->95 29 RegSvcs.exe 12->29         started        31 schtasks.exe 12->31         started        33 conhost.exe 14->33         started        35 conhost.exe 16->35         started        signatures6 process7 dnsIp8 59 ip-api.com 208.95.112.1, 49723, 49726, 80 TUT-ASUS United States 18->59 61 coperwire.com 149.56.180.35, 49724, 49728, 587 OVHFR Canada 18->61 63 api.ipify.org 104.26.12.205, 443, 49720, 49725 CLOUDFLARENETUS United States 18->63 47 C:\Users\user\AppData\Roaming\...\VLYdwNT.exe, PE32 18->47 dropped 73 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->73 75 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->75 77 Tries to steal Mail credentials (via file / registry access) 18->77 79 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 18->79 37 WmiPrvSE.exe 23->37         started        39 conhost.exe 23->39         started        41 conhost.exe 25->41         started        43 conhost.exe 27->43         started        81 Tries to harvest and steal browser information (history, passwords, etc) 29->81 83 Hides that the sample has been downloaded from the Internet (zone.identifier) 29->83 45 conhost.exe 31->45         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c639e017b9f754cefda7c602d09997b1c70c5cb4fbe38b2e17888c2d3ab43c2e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c639e017b9f754cefda7c602d09997b1c70c5cb4fbe38b2e17888c2d3ab43c2e/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-02-08 06:23:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
13 of 24 (54.17%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yy46af5z65km57nhyybnbgmxwhdqyxfu7prywlqxrcgc2ovuhqxa._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
56186e8da853b2cabf3e4679d54e6d0218230de21949efbbd46744d1c241e6be
Formbook
6493d3a36512c2e8dc785d618a266f9de4fbbe23c39fb0be1829a7d622ac2a9c
Formbook
7a97e2e571d16bf14763fe2fdf5802a2c01e4d103b7eb98b9784a09b4d9cdc01
Formbook
844a5da9df7b604b6f85ca154026f32842425c57cdbdcd68cc6dc00d05dd1f29
Formbook
f322a7a1d67ff10904b653fbc984e11152de5128b935fe94af2da82213ab073d
Formbook
+ 5'550 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240208-kfv42sdee7/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
AgentTesla
Unpacked files
SH256 hash:
4ada9d8c371e960de1103fb6161a6bfa791cd637d52e57d25803149d0951281f
MD5 hash:
20c5f8cafb2f670dc7cd97745251c661
SHA1 hash:
cbcdc9c4fe036404144d88fa0b27780297c7f20d
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/3cafb1a8-bd0c-41a0-b36e-aeca09019b11/
Parent samples :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 hash:
5fe50b7d9a6e9214e727581ebb1dfeb43e175c39ba3966684030f5da4c0c64bf
MD5 hash:
f6b2186dd134aed59815a420cc5ccc8c
SHA1 hash:
569326a8f69da0b50854f18c86805b019cd902fd
Link:
https://www.unpac.me/results/3cafb1a8-bd0c-41a0-b36e-aeca09019b11/
SH256 hash:
b5ee0b21a70e842047be3bfdb559744e825e6b5342d158e82bc948e2c04c5310
MD5 hash:
678f80dae10652a4c9cacce906cf3304
SHA1 hash:
33df75a1ecf340f3a57bd6f621ecd0ea9c32300d
Link:
https://www.unpac.me/results/3cafb1a8-bd0c-41a0-b36e-aeca09019b11/
SH256 hash:
cee53eb83a9520aee13583e493e1953a19b269511a6b3808968d5f39f640a7fd
MD5 hash:
03047fd388b0874556b14c000f21df14
SHA1 hash:
0f0f1ef5cf3970476d48d77f34fd2ca8a911c746
Link:
https://www.unpac.me/results/3cafb1a8-bd0c-41a0-b36e-aeca09019b11/
SH256 hash:
c639e017b9f754cefda7c602d09997b1c70c5cb4fbe38b2e17888c2d3ab43c2e
MD5 hash:
4d42a037964800d73cf03755fb6acbf9
SHA1 hash:
a4bb409da8b6db9b8bfb5dd2a2815324d70d5629
Link:
https://www.unpac.me/results/3cafb1a8-bd0c-41a0-b36e-aeca09019b11/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c639e017b9f7/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/c639e017b9f754cefda7c602d09997b1c70c5cb4fbe38b2e17888c2d3ab43c2e

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:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
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.

Cape
Cape
https://www.capesandbox.com/analysis/475342/

Comments