MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 acb87595a5ea8141149502c5f1616c9f8c38f8a183ce496d638f7ae094c29581. 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: 12


Intelligence 12 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: acb87595a5ea8141149502c5f1616c9f8c38f8a183ce496d638f7ae094c29581
SHA3-384 hash: ab7bbee159287b053c140cc6806198f077211171a688647e2dfaeab8c660d9d61790bb9455a8b8939f26ae5cb070300c
SHA1 hash: 5c0dbfe944bf5f126f1b49cc3267463c32aae336
MD5 hash: 22ed7b58b0734e8804282a4973c8a236
humanhash: lithium-charlie-mars-don
File name:Vk6NVzcmOXL1ic5.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:873'472 bytes
First seen:2021-08-10 06:09:15 UTC
Last seen:2021-08-11 03:25:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'481 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:nqVn3qGaNHEyC9/oR9gy5FHK7zgfFAre3WaEXL5VeX8Bk19+vzR9N0/8sw:ngPp9AR95yAFAe3PEXu8Bk19gR9N0lw
Threatray 8'122 similar samples on MalwareBazaar
TLSH T16905024B27804383C40AAE7A584963974AB4DED6FFD1EDE53C82793D2DEA341CE06653
Reporter lowmal3
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
4
# of downloads :
169
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Vk6NVzcmOXL1ic5.exe
Verdict:
Suspicious activity
Analysis date:
2021-08-10 06:11:22 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/931c70b7-807a-410b-ab46-78f3caeb3a2c

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/177810/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Unauthorized injection to a system process
Result
Verdict:
UNKNOWN
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/0e262e62-01ff-4e6a-b08a-36eb06e21a01
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/829918
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Modifies the hosts file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: MSBuild connects to smtp port
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 ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 462349 Sample: Vk6NVzcmOXL1ic5.exe Startdate: 10/08/2021 Architecture: WINDOWS Score: 100 49 Found malware configuration 2->49 51 Antivirus / Scanner detection for submitted sample 2->51 53 Multi AV Scanner detection for submitted file 2->53 55 7 other signatures 2->55 6 Vk6NVzcmOXL1ic5.exe 3 2->6         started        10 NXLun.exe 2 2->10         started        12 NXLun.exe 1 2->12         started        process3 file4 27 C:\Users\user\...\Vk6NVzcmOXL1ic5.exe.log, ASCII 6->27 dropped 57 Writes to foreign memory regions 6->57 59 Injects a PE file into a foreign processes 6->59 14 MSBuild.exe 2 4 6->14         started        19 MSBuild.exe 6->19         started        21 MSBuild.exe 6->21         started        23 conhost.exe 10->23         started        25 conhost.exe 12->25         started        signatures5 process6 dnsIp7 33 priserveinfra.com 50.31.160.189, 49720, 587 SERVERCENTRALUS United States 14->33 35 mail.priserveinfra.com 14->35 29 C:\Users\user\AppData\Roaming\...29XLun.exe, PE32 14->29 dropped 31 C:\Windows\System32\drivers\etc\hosts, ASCII 14->31 dropped 37 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->37 39 Tries to steal Mail credentials (via file access) 14->39 41 Tries to harvest and steal ftp login credentials 14->41 47 3 other signatures 14->47 43 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->43 45 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 19->45 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/acb87595a5ea8141149502c5f1616c9f8c38f8a183ce496d638f7ae094c29581/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-10 05:52:22 UTC
AV detection:
17 of 45 (37.78%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vs4hlfnf5kaucfevalc7cylmt6gdr6fbqphes3ldr55obfgcswaq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
04826eeb4d21104190dfb002657c616a669577a5a5a16da88ff50402faafa25e
AgentTesla
1a7b47cb19815654a494cf57cd5f786d4e93137ecfff90371e9546b248c8b635
AgentTesla
23e9628689de5cffc14abcc1d39a259f54bde8e50304af29d4e127359163e1c4
AgentTesla
931a752444d02c98b75e8062756baa88f000d0ccd2cc05044280fb0e9ed7771d
AgentTesla
9423b7f41de10ed83754fae0f0915001144922c927f51c36b94036a707a09f31
AgentTesla
b1288d6b5330d9bb5e398c328f22d4d6c4792cf73e347e5a74ee4180f8595776
AgentTesla
f7d8bb7108bdfc37cb94c9c04d73ba60d693f03411332ae31a7da4ad82e9a7ff
AgentTesla
+ 8'112 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/210810-je5kztkf4x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
ff9185194492f672a90902e047ccf21b40d00846b1285142f90286fa07b2c12c
MD5 hash:
a8698d78beccdfdea682cda75a0a4e87
SHA1 hash:
f6991c82f69d71e35e66625eaedb6e1eb3d96c79
Link:
https://www.unpac.me/results/bed06463-0b30-4193-b6df-aa7024453f28/
SH256 hash:
e31f6764af07128172c5117fc7278b8de7c195b0e9ca65f1adfd88a8db80c23e
MD5 hash:
49ec6727a378a954b86e43fd5faafa7c
SHA1 hash:
a72942601ef6da2c0282e1ab6f49b2b8c667725f
Link:
https://www.unpac.me/results/bed06463-0b30-4193-b6df-aa7024453f28/
SH256 hash:
2b760cae46a2591b9c2773bfbe236f3cade496102c903d8c399bf791333f9098
MD5 hash:
50cb381e9d61cbc27ce8fdef1da36310
SHA1 hash:
9339c3616f0124ba3419f9317b8ea1016b532e57
Link:
https://www.unpac.me/results/bed06463-0b30-4193-b6df-aa7024453f28/
SH256 hash:
acb87595a5ea8141149502c5f1616c9f8c38f8a183ce496d638f7ae094c29581
MD5 hash:
22ed7b58b0734e8804282a4973c8a236
SHA1 hash:
5c0dbfe944bf5f126f1b49cc3267463c32aae336
Link:
https://www.unpac.me/results/bed06463-0b30-4193-b6df-aa7024453f28/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/acb87595a5ea/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/acb87595a5ea8141149502c5f1616c9f8c38f8a183ce496d638f7ae094c29581

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:ach_AgentTesla_20200929
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information

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

Malspam

AgentTesla

Executable exe acb87595a5ea8141149502c5f1616c9f8c38f8a183ce496d638f7ae094c29581

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/177810/

Comments