MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e2838cb88878911f84442041b0f01807d2fa0468a8f521ddf53dc1d578685126. 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


AgentTesla


Vendor detections: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e2838cb88878911f84442041b0f01807d2fa0468a8f521ddf53dc1d578685126
SHA3-384 hash: f03d0796e01de542b3c3836bd88eeb015813bb6d308d85d9e3ecbea00c9e44657c9e0831f6e3473c18faaf8a10b26b69
SHA1 hash: 8a2c0cd6307e0b60ac92bcce9ec9de0bf91e98fd
MD5 hash: 25375705df41c56c40e056545ff3f4d9
humanhash: comet-zebra-uncle-robin
File name:SecuriteInfo.com.Exploit.ShellCode.69.7870.25770
Download: download sample
Signature AgentTesla
Create hunting rule
File size:76'387 bytes
First seen:2024-03-19 09:32:53 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 1536:vLROkjy10yG0+Wm0x7mcLiqkep24scugrcfb0ogyi21mOlJWAL5WO4U6Rhq95kVF:vVtm0s+Wm0xNLiqkes4sXgrK09q1mOlc
TLSH T1B773BE2DE70F0925DF95A6BB434A5B4909FCB33DB38540A179AC973437ADC2E462287C
Reporter SecuriteInfoCom
Tags:AgentTesla CVE-2017-11882 rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
128
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
e2838cb88878911f84442041b0f01807d2fa0468a8f521ddf53dc1d578685126.rtf
Verdict:
Suspicious activity
Analysis date:
2024-03-19 09:42:58 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a5e5bcd1-0e7c-4d5f-8bcf-f0a755898f28

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
SecuriteInfo.com.Exploit.ShellCode.69.7870.25770.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Using the Windows Management Instrumentation requests
Creating a window
Sending an HTTP GET request
Creating a file in the %AppData% directory
Сreating synchronization primitives
Changing an executable file
Launching a service
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Creating a process with a hidden window
Creating a file
Connection attempt by exploiting the app vulnerability
Launching a file downloaded from the Internet
Forced shutdown of a system process
Creating a process from a recently created file
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/e2838cb88878911f84442041b0f01807d2fa0468a8f521ddf53dc1d578685126/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit shellcode
Link:
https://www.filescan.io/uploads/65f95bd8757c624818b2f968/reports/139ec710-6898-4d02-a998-9a6801f5bce8/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/e2838cb88878911f84442041b0f01807d2fa0468a8f521ddf53dc1d578685126
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1411615
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
Contains functionality to log keystrokes (.Net Source)
Document exploit detected (process start blacklist hit)
Found malware configuration
Injects a PE file into a foreign processes
Installs new ROOT certificates
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Snort IDS alert for network traffic
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 Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1411615 Sample: SecuriteInfo.com.Exploit.Sh... Startdate: 19/03/2024 Architecture: WINDOWS Score: 100 60 Snort IDS alert for network traffic 2->60 62 Found malware configuration 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 20 other signatures 2->66 8 WINWORD.EXE 336 13 2->8         started        10 taskeng.exe 2->10         started        process3 process4 12 EQNEDT32.EXE 12 8->12         started        17 EQNEDT32.EXE 8->17         started        19 HGvzWiTHEFaX.exe 10->19         started        dnsIp5 58 104.168.32.18, 49161, 80 AS-COLOCROSSINGUS United States 12->58 48 C:\Users\user\AppData\Roaming\lee.exe, PE32 12->48 dropped 50 C:\Users\user\AppData\Local\...\lee[1].exe, PE32 12->50 dropped 90 Office equation editor establishes network connection 12->90 92 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 12->92 21 lee.exe 1 10 12->21         started        94 Multi AV Scanner detection for dropped file 19->94 96 Machine Learning detection for dropped file 19->96 98 Writes to foreign memory regions 19->98 100 3 other signatures 19->100 25 RegSvcs.exe 19->25         started        28 powershell.exe 19->28         started        30 powershell.exe 19->30         started        32 schtasks.exe 19->32         started        file6 signatures7 process8 dnsIp9 44 C:\Users\user\AppData\...\HGvzWiTHEFaX.exe, PE32 21->44 dropped 46 C:\Users\user\AppData\Local\...\tmp1362.tmp, XML 21->46 dropped 76 Multi AV Scanner detection for dropped file 21->76 78 Machine Learning detection for dropped file 21->78 80 Uses schtasks.exe or at.exe to add and modify task schedules 21->80 88 4 other signatures 21->88 34 RegSvcs.exe 12 2 21->34         started        38 powershell.exe 4 21->38         started        40 powershell.exe 4 21->40         started        42 schtasks.exe 21->42         started        54 104.26.12.205, 443, 49163 CLOUDFLARENETUS United States 25->54 56 api.ipify.org 25->56 82 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 25->82 84 Tries to steal Mail credentials (via file / registry access) 25->84 86 Tries to harvest and steal browser information (history, passwords, etc) 25->86 file10 signatures11 process12 dnsIp13 52 api.ipify.org 172.67.74.152, 443, 49162 CLOUDFLARENETUS United States 34->52 68 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 34->68 70 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 34->70 72 Tries to steal Mail credentials (via file / registry access) 34->72 74 Installs new ROOT certificates 38->74 signatures14
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/e2838cb88878911f84442041b0f01807d2fa0468a8f521ddf53dc1d578685126
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e2838cb88878911f84442041b0f01807d2fa0468a8f521ddf53dc1d578685126/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-03-19 07:35:53 UTC
File Type:
Document
Extracted files:
4
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4kbyzoeipcir7bceeba3b4aya7jpubdivd2sdxpvhxa5k6diketa._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240319-lh7rasgc74/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
AgentTesla
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e2838cb88878/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/e2838cb88878911f84442041b0f01807d2fa0468a8f521ddf53dc1d578685126

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:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
Rule name:SUSP_INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:https://github.com/ditekshen/detection

File information

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

Web download

AgentTesla

Rich Text Format (RTF) rtf e2838cb88878911f84442041b0f01807d2fa0468a8f521ddf53dc1d578685126

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2786832/
  
Delivery method
Distributed via web download

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