MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1f25cc2116efd8dab8b7865597f22571937f38c8fa06279b45c3ddfbf6df5b7. 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: 9

Intelligence 9 IOCs YARA 4 File information Comments

SHA256 hash:	a1f25cc2116efd8dab8b7865597f22571937f38c8fa06279b45c3ddfbf6df5b7
SHA3-384 hash:	8cd619539d66fc349a0760d13ff7ba2dca5f4d41cbc29b8c68c9408eba9507e834dc9fe414f60f0923edce276aeaf87c
SHA1 hash:	c080a65940c4a07ca45051bfd05848d64d31c005
MD5 hash:	c56ab7ff3f6c1b4018f614beff6bd54a
humanhash:	seven-jupiter-ink-nevada
File name:	Purchase Order for 0514 BUY F20.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	687'616 bytes
First seen:	2020-08-06 04:42:37 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	12288:78CQZ3pGHUn65fFmBx6Ne3hYDdga6M8egrpiAIP7r9r/+ppppppppppppppppppB:Q3pGHUn1BEkxYDufzQAI1q
Threatray	124 similar samples on MalwareBazaar
TLSH	42E47C84E6485BA0DCA89B74563AEC7543237EADAC34E51C29CE3DB73BFB3924021457
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

HELO: jiuyutex.com
Sending IP: 103.99.1.149
From: Katharina.hong<Katharina.hong@jiuyutex.com>
Subject: RE:[COLUMBIA] Purchase Order for 05/14 BUY_F20_SHANGHAI JIUYU_ATC VN
Attachment: Purchase Order for 0514 BUY F20.rar (contains "Purchase Order for 0514 BUY F20.exe")

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

AgentTeslaV2

Link:

https://www.capesandbox.com/analysis/39985/

Detection(s):

SecuriteInfo.com.Variant.Ursu.435286.26270.8270.UNOFFICIAL

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

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/412023

Signature

Allocates memory in foreign processes

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

Hides that the sample has been downloaded from the Internet (zone.identifier)

Initial sample is a PE file and has a suspicious name

Injects a PE file into a foreign processes

Machine Learning detection for sample

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)

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 access)

Writes to foreign memory regions

Yara detected AgentTesla

Yara detected AntiVM_3

Behaviour

Behavior Graph:

Download SVG

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/a1f25cc2116efd8dab8b7865597f22571937f38c8fa06279b45c3ddfbf6df5b7/

Threat name:

ByteCode-MSIL.Spyware.Negasteal

Status:

Malicious

First seen:

2020-08-06 03:20:37 UTC

AV detection:

24 of 29 (82.76%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=uhzfzqqrn36y3k4lpbsvs7zck4mtp44mr6qge6nulq657p3n6w3q._file

Verdict:

unknown

AgentTesla

30ca35fc400a2f7fcfc2a05cd603f6972349d7da6a42bc492563670af3d2ecb8

AgentTesla

4247dd682459141f1839b1a42a9f851e40f55bbbc7c3cebfa4fe9874da2319c7

AgentTesla

61358417b17934b4908ea8bf1c8c58c7d64f6d899159e7ffb91406029d62b83a

AgentTesla

7096b897ada69f061b2061c5454f2929599aacbca8d8efd95fc307a1107c1a1c

AgentTesla

75e41eb7b9f88a279e41be0944ebe10df52c768f5b4992597d693fe58d96f4f1

AgentTesla

7d5613b39d0a6e9022304e17d360d351b04fadd2cebb8e24ae203bd8eba32196

AgentTesla

a7fe126b01ab7f612af3aae23f1f45bf607f10d4956d7d0b75fe6cd6ac4c4b93

AgentTesla

bf0b665a0ce42c70bc73bd8634339da01d819e8e973ed775b53b612dd9ead1b8

AgentTesla

ed08a1f65980d0f24e174be95df0c9b1bbb05703a7f267315ab34d02d46efaed

AgentTesla

+ 114 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger stealer spyware trojan family:agenttesla persistence

Link:

https://tria.ge/reports/200806-pe8r5vaq3s/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetThreadContext

Adds Run key to start application

Reads user/profile data of web browsers

Reads user/profile data of local email clients

AgentTesla Payload

AgentTesla

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Kryptik

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/a1f25cc2116efd8dab8b7865597f22571937f38c8fa06279b45c3ddfbf6df5b7

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:	Agenttesla_type2 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Agenttesla in memory
Reference:	internal research

Rule name:	CAP_HookExKeylogger Create hunting rule
Author:	Brian C. Bell -- @biebsmalwareguy
Reference:	https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar

Rule name:	win_agent_tesla_w1 Create hunting rule
Author:	govcert_ch
Description:	Detect Agent Tesla based on common .NET code sequences

Rule name:	win_cannon_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	autogenerated rule brought to you by yara-signator