MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 638c7d6859e792cc15836509bd58bf468b755fee3dcf669d2dcf328dd0029f12. 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: 6


Intelligence 6 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 638c7d6859e792cc15836509bd58bf468b755fee3dcf669d2dcf328dd0029f12
SHA3-384 hash: ca5e0e9ba482815267210b7e8dbe4e8b39df21384f479e2981e34bbcd5b3543c55b15df8254e126e772523080779397c
SHA1 hash: f49222ec7e912e8f65b2c8518ddd58940753a7f8
MD5 hash: 7ee9f7dd82092fd7fbca3df11d3bc5fa
humanhash: bravo-undress-fish-alanine
File name:VESSEL CONTACT DETAILS, LOAD & DISPORT.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:218'159 bytes
First seen:2020-10-06 11:23:52 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 1536:9bNSTvHyjtHv9Yr9qm2o6+uwNRR+eLUSJ+31Cy6mAgaeeVhMDw5wfLu:9QWraRDAw5wf6
TLSH 7F2475B831974964E749C91A5168B56D0AF5F2E374C54CB123EFE430DFA4FE0AF88286
Reporter cocaman
Tags:AgentTesla doc


Avatar
cocaman
Malicious email (T1566.001)
From: "InfoPort@ldbulk.com"
Received: "from ldbulk.com (unknown [88.218.16.246]) "
Date: "06 Oct 2020 14:51:53 +0200"
Subject: "Request Proforma DA "
Attachment: "VESSEL CONTACT DETAILS, LOAD & DISPORT.doc"

Intelligence

File Origin
# of uploads :
1
# of downloads :
100
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
DNS request
Creating a process with a hidden window
Creating a file in the %AppData% directory
Creating a process from a recently created file
Launching a process
Sending a custom TCP request
Creating a file
Launching a service
Deleting a recently created file
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Launching a file downloaded from the Internet
Enabling autorun by creating a file
Adding exclusions to Windows Defender
Enabling autorun
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/482691
Signature
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
Binary contains a suspicious time stamp
Bypasses PowerShell execution policy
Connects to a pastebin service (likely for C&C)
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Drops PE files to the startup folder
Found suspicious RTF objects
Hides threads from debuggers
Injects a PE file into a foreign processes
Injects files into Windows application
Machine Learning detection for dropped file
Microsoft Office creates scripting files
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Powershell download and execute file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to download and execute files (via powershell)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 293787 Sample: VESSEL CONTACT DETAILS, LOA... Startdate: 06/10/2020 Architecture: WINDOWS Score: 100 70 pastebin.com 2->70 82 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->82 84 Antivirus detection for URL or domain 2->84 86 Sigma detected: Powershell download and execute file 2->86 88 16 other signatures 2->88 9 WINWORD.EXE 306 49 2->9         started        signatures3 process4 dnsIp5 72 altcbs.com 144.91.64.187, 49165, 49166, 80 CONTABODE Germany 9->72 52 C:\Users\user\AppData\Local\...\f[1].exe, PE32 9->52 dropped 54 C:\Users\user\AppData\Local\...\FLC053.tmp, 370 9->54 dropped 56 C:\Users\user\AppData\...\Abctfhghgdghgh .scT, data 9->56 dropped 58 C:\Users\user\AppData\Local\...\D0B30AF2.png, 370 9->58 dropped 90 Document exploit detected (creates forbidden files) 9->90 92 Suspicious powershell command line found 9->92 94 Tries to download and execute files (via powershell) 9->94 96 2 other signatures 9->96 14 powershell.exe 12 7 9->14         started        19 powershell.exe 7 9->19         started        21 powershell.exe 7 9->21         started        23 3 other processes 9->23 file6 signatures7 process8 dnsIp9 76 altcbs.com 14->76 68 C:\Users\user\AppData\...\KYUKTSRre5.exe, PE32 14->68 dropped 78 Powershell drops PE file 14->78 25 KYUKTSRre5.exe 12 4 14->25         started        30 KYUKTSRre5.exe 19->30         started        32 KYUKTSRre5.exe 21->32         started        80 Injects files into Windows application 23->80 file10 signatures11 process12 dnsIp13 60 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 25->60 dropped 98 Multi AV Scanner detection for dropped file 25->98 100 Machine Learning detection for dropped file 25->100 102 Drops PE files to the startup folder 25->102 34 timeout.exe 25->34         started        36 powershell.exe 25->36         started        46 2 other processes 25->46 74 pastebin.com 104.23.98.190, 443, 49167, 49168 CLOUDFLARENETUS United States 30->74 62 C:\Users\user\AppData\...\KYUKTSRre5.exe, PE32 30->62 dropped 64 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 30->64 dropped 104 Creates an undocumented autostart registry key 30->104 106 Creates autostart registry keys with suspicious names 30->106 108 Creates multiple autostart registry keys 30->108 38 timeout.exe 30->38         started        40 powershell.exe 30->40         started        42 powershell.exe 30->42         started        48 2 other processes 30->48 66 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 32->66 dropped 110 Adds a directory exclusion to Windows Defender 32->110 112 Hides threads from debuggers 32->112 114 Injects a PE file into a foreign processes 32->114 44 timeout.exe 32->44         started        50 3 other processes 32->50 file14 signatures15 process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/638c7d6859e792cc15836509bd58bf468b755fee3dcf669d2dcf328dd0029f12/
Threat name:
Script-VBS.Trojan.RTFObfustream
Create hunting rule
Status:
Malicious
First seen:
2020-10-06 08:05:30 UTC
File Type:
Document
Extracted files:
9
AV detection:
16 of 29 (55.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mogh22cz46jmyfmdmue32wf7i2fxkx7ohxhwnhjnz4zi3uact4ja._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
persistence evasion trojan spyware
Link:
https://tria.ge/reports/201006-6s6ktr8p12/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Modifies registry class
NTFS ADS
Office loads VBA resources, possible macro or embedded object present
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Drops startup file
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Windows security modification
Blacklisted process makes network request
Executes dropped EXE
Modifies WinLogon for persistence
Modifies Windows Defender Real-time Protection settings
Process spawned unexpected child process
Windows security bypass
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Bloodhound
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/638c7d6859e792cc15836509bd58bf468b755fee3dcf669d2dcf328dd0029f12

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:Retefe
Create hunting rule
Author:bartblaze
Description:Retefe
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples

File information

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

Malspam

AgentTesla

Word file doc 638c7d6859e792cc15836509bd58bf468b755fee3dcf669d2dcf328dd0029f12

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments