agenttesla | d4803c82bdc773474dda976fa30bc7fbbad2a6192af850c71602419dd500368b

General

Target

new purchase order.rar.exe
Size

523KB
MD5

e50b58922768f36a719aa5e91c086c06
SHA1

f2216e02ce43d07bc6bc8b7fb01461f1d9d1aa91
SHA256

a4d3085a47bf0da4fa557e18de19bada74667d0eaa3dca959990b96215bb25cc
SHA512

ba6be2906587a73203196853952878e017e99ad94edec3195a368edd99f9fb0c2ae3218b84bd943a57f0cdbbd340043c0858b9e050f330dbacdf26b45f32d078

Score

10^/10

agenttesla snakebot collection coreentity evasion keylogger rezer0 snakebot spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.villanika.gr
Port:
587
Username:
info@villanika.gr
Password:
n2^-9wE@Wl}t

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1448-56-0x0000000000940000-0x0000000000948000-memory.dmp	coreentity

SnakeBOT
SnakeBOT is a heavily obfuscated .NET downloader.
snakebot

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1968-62-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1968-61-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1968-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1968-64-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral1/memory/1968-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1968-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Contains SnakeBOT related strings 1 IoCs

snakebot

Processes:

resource	yara_rule
behavioral1/memory/1448-54-0x0000000000990000-0x0000000000A1C000-memory.dmp	snakebot_strings

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1448-57-0x0000000004400000-0x0000000004458000-memory.dmp	rezer0

Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

RegSvcs.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegSvcs.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

new purchase order.rar.exe

description pid process target process

PID 1448 set thread context of 1968 1448 new purchase order.rar.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1512 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1968 RegSvcs.exe
1968 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

new purchase order.rar.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1448 new purchase order.rar.exe
Token: SeDebugPrivilege 1968 RegSvcs.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

new purchase order.rar.exe

pid process

1448 new purchase order.rar.exe
1448 new purchase order.rar.exe

description	pid	process	target process
PID 1448 set thread context of 1968	1448	new purchase order.rar.exe	RegSvcs.exe

pid	process
1512	REG.exe

pid	process
1968	RegSvcs.exe
1968	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1448	new purchase order.rar.exe
Token: SeDebugPrivilege	1968	RegSvcs.exe

pid	process
1448	new purchase order.rar.exe
1448	new purchase order.rar.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

new purchase order.rar.exeRegSvcs.exe

description	pid	process	target process
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1448 wrote to memory of 1968	1448	new purchase order.rar.exe	RegSvcs.exe
PID 1968 wrote to memory of 1512	1968	RegSvcs.exe	REG.exe
PID 1968 wrote to memory of 1512	1968	RegSvcs.exe	REG.exe
PID 1968 wrote to memory of 1512	1968	RegSvcs.exe	REG.exe
PID 1968 wrote to memory of 1512	1968	RegSvcs.exe	REG.exe
PID 1968 wrote to memory of 1160	1968	RegSvcs.exe	netsh.exe
PID 1968 wrote to memory of 1160	1968	RegSvcs.exe	netsh.exe
PID 1968 wrote to memory of 1160	1968	RegSvcs.exe	netsh.exe
PID 1968 wrote to memory of 1160	1968	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe
"C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1448

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1968

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
3⤵
- Modifies registry key
PID:1512

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1160

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/1160-71-0x0000000000000000-mapping.dmp

Download
memory/1448-54-0x0000000000990000-0x0000000000A1C000-memory.dmp

Filesize
560KB

Download
memory/1448-55-0x0000000075C51000-0x0000000075C53000-memory.dmp

Filesize
8KB

Download
memory/1448-56-0x0000000000940000-0x0000000000948000-memory.dmp

Filesize
32KB

Download
memory/1448-57-0x0000000004400000-0x0000000004458000-memory.dmp

Filesize
352KB

Download
memory/1512-70-0x0000000000000000-mapping.dmp

Download
memory/1968-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1968-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1968-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1968-64-0x000000000044C6EE-mapping.dmp

Download
memory/1968-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1968-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1968-59-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1968-58-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads