agenttesla | a4d3085a47bf0da4fa557e18de19bada74667d0eaa3dca959990b96215bb25cc

General

Target

new purchase order.rar.exe
Size

523KB
MD5

e50b58922768f36a719aa5e91c086c06
SHA1

f2216e02ce43d07bc6bc8b7fb01461f1d9d1aa91
SHA256

a4d3085a47bf0da4fa557e18de19bada74667d0eaa3dca959990b96215bb25cc
SHA512

ba6be2906587a73203196853952878e017e99ad94edec3195a368edd99f9fb0c2ae3218b84bd943a57f0cdbbd340043c0858b9e050f330dbacdf26b45f32d078

Score

10^/10

agenttesla nanocore coreentity evasion keylogger rezer0 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
behavioral2/memory/3932-6-0x0000000002E20000-0x0000000002E23000-memory.dmp	coreentity

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

AgentTesla Payload 13 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3976-9-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral2/memory/3976-10-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-20-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-22-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-21-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-23-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-25-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-24-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-26-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-27-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-28-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-30-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/3976-29-0x000000000044C6EE-mapping.dmp	family_agenttesla

rezer0 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral2/memory/3932-7-0x000000000B470000-0x000000000B4C3000-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
Suspicious use of SetThreadContext 1 IoCs

Processes:

new purchase order.rar.exe

description pid process target process

PID 3932 set thread context of 3976 3932 new purchase order.rar.exe RegSvcs.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2064 3976 WerFault.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

3128 REG.exe

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

description	pid	process	target process
PID 3932 set thread context of 3976	3932	new purchase order.rar.exe	RegSvcs.exe

pid	pid_target	process	target process
2064	3976	WerFault.exe	RegSvcs.exe

pid	process
3128	REG.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

RegSvcs.exeWerFault.exe

pid	process
3976	RegSvcs.exe
3976	RegSvcs.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe
2064	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

new purchase order.rar.exeRegSvcs.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	3932	new purchase order.rar.exe
Token: SeDebugPrivilege	3976	RegSvcs.exe
Token: SeRestorePrivilege	2064	WerFault.exe
Token: SeBackupPrivilege	2064	WerFault.exe
Token: SeDebugPrivilege	2064	WerFault.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

new purchase order.rar.exe

pid process

3932 new purchase order.rar.exe
3932 new purchase order.rar.exe

pid	process
3932	new purchase order.rar.exe
3932	new purchase order.rar.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

new purchase order.rar.exeRegSvcs.exe

description	pid	process	target process
PID 3932 wrote to memory of 3976	3932	new purchase order.rar.exe	RegSvcs.exe
PID 3932 wrote to memory of 3976	3932	new purchase order.rar.exe	RegSvcs.exe
PID 3932 wrote to memory of 3976	3932	new purchase order.rar.exe	RegSvcs.exe
PID 3932 wrote to memory of 3976	3932	new purchase order.rar.exe	RegSvcs.exe
PID 3932 wrote to memory of 3976	3932	new purchase order.rar.exe	RegSvcs.exe
PID 3932 wrote to memory of 3976	3932	new purchase order.rar.exe	RegSvcs.exe
PID 3932 wrote to memory of 3976	3932	new purchase order.rar.exe	RegSvcs.exe
PID 3932 wrote to memory of 3976	3932	new purchase order.rar.exe	RegSvcs.exe
PID 3976 wrote to memory of 3128	3976	RegSvcs.exe	REG.exe
PID 3976 wrote to memory of 3128	3976	RegSvcs.exe	REG.exe
PID 3976 wrote to memory of 3128	3976	RegSvcs.exe	REG.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:3932

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3976

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:3128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3976 -s 1432
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2064

Network

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

Exfiltration

Command and Control

Impact

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Downloads

memory/2064-31-0x0000000004AD0000-0x0000000004AD1000-memory.dmp

Filesize
4KB

Download
memory/2064-19-0x00000000044A0000-0x00000000044A1000-memory.dmp

Filesize
4KB

Download
memory/3128-18-0x0000000000000000-mapping.dmp

Download
memory/3932-0-0x0000000073300000-0x00000000739EE000-memory.dmp

Filesize
6.9MB

Download
memory/3932-1-0x0000000000C00000-0x0000000000C01000-memory.dmp

Filesize
4KB

Download
memory/3932-3-0x0000000007E40000-0x0000000007E41000-memory.dmp

Filesize
4KB

Download
memory/3932-4-0x00000000079E0000-0x00000000079E1000-memory.dmp

Filesize
4KB

Download
memory/3932-5-0x00000000079A0000-0x00000000079A1000-memory.dmp

Filesize
4KB

Download
memory/3932-6-0x0000000002E20000-0x0000000002E23000-memory.dmp

Filesize
12KB

Download
memory/3932-7-0x000000000B470000-0x000000000B4C3000-memory.dmp

Filesize
332KB

Download
memory/3932-8-0x000000000B570000-0x000000000B571000-memory.dmp

Filesize
4KB

Download
memory/3976-17-0x0000000005EB0000-0x0000000005EB1000-memory.dmp

Filesize
4KB

Download
memory/3976-23-0x000000000044C6EE-mapping.dmp

Download
memory/3976-11-0x0000000073300000-0x00000000739EE000-memory.dmp

Filesize
6.9MB

Download
memory/3976-10-0x000000000044C6EE-mapping.dmp

Download
memory/3976-20-0x000000000044C6EE-mapping.dmp

Download
memory/3976-22-0x000000000044C6EE-mapping.dmp

Download
memory/3976-21-0x000000000044C6EE-mapping.dmp

Download
memory/3976-16-0x00000000053E0000-0x00000000053E1000-memory.dmp

Filesize
4KB

Download
memory/3976-25-0x000000000044C6EE-mapping.dmp

Download
memory/3976-24-0x000000000044C6EE-mapping.dmp

Download
memory/3976-26-0x000000000044C6EE-mapping.dmp

Download
memory/3976-27-0x000000000044C6EE-mapping.dmp

Download
memory/3976-28-0x000000000044C6EE-mapping.dmp

Download
memory/3976-30-0x000000000044C6EE-mapping.dmp

Download
memory/3976-29-0x000000000044C6EE-mapping.dmp

Download
memory/3976-9-0x0000000000400000-0x0000000000452000-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