agenttesla | 3f68b22fb16c34f3e0b8f0437901b1a67ee94ad173d4d810abd91b7bf2c8d3a3

General

Target

PO# -RDPLI2020-03060 - PILOT# 154550.exe
Size

506KB
MD5

9bf56e4b75bec106e43fa542d5329135
SHA1

d22427be6b476f2362463c291cd4682e6ecc5bb0
SHA256

3f68b22fb16c34f3e0b8f0437901b1a67ee94ad173d4d810abd91b7bf2c8d3a3
SHA512

22021ea13ae74b4acb1c96a48d39dca8bbc464ebad087ce978c3821175302e6580f393755043f81583fa4e51ecc8cd24aee2be7cab62efe66e175e149891af66

Score

10^/10

agenttesla 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/640-7-0x0000000002C00000-0x0000000002C03000-memory.dmp	coreentity

AgentTesla Payload 14 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2884-10-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral2/memory/2884-11-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-21-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-22-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-23-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-25-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-24-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-26-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-27-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-30-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-31-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-29-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-32-0x000000000044C6EE-mapping.dmp	family_agenttesla
behavioral2/memory/2884-28-0x000000000044C6EE-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/640-8-0x000000000A0F0000-0x000000000A143000-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:

PO# -RDPLI2020-03060 - PILOT# 154550.exe

description pid process target process

PID 640 set thread context of 2884 640 PO# -RDPLI2020-03060 - PILOT# 154550.exe RegSvcs.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3880 2884 WerFault.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

2420 REG.exe

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

description	pid	process	target process
PID 640 set thread context of 2884	640	PO# -RDPLI2020-03060 - PILOT# 154550.exe	RegSvcs.exe

pid	pid_target	process	target process
3880	2884	WerFault.exe	RegSvcs.exe

pid	process
2420	REG.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

PO# -RDPLI2020-03060 - PILOT# 154550.exeRegSvcs.exeWerFault.exe

pid	process
640	PO# -RDPLI2020-03060 - PILOT# 154550.exe
640	PO# -RDPLI2020-03060 - PILOT# 154550.exe
640	PO# -RDPLI2020-03060 - PILOT# 154550.exe
2884	RegSvcs.exe
2884	RegSvcs.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe
3880	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

PO# -RDPLI2020-03060 - PILOT# 154550.exeRegSvcs.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	640	PO# -RDPLI2020-03060 - PILOT# 154550.exe
Token: SeDebugPrivilege	2884	RegSvcs.exe
Token: SeRestorePrivilege	3880	WerFault.exe
Token: SeBackupPrivilege	3880	WerFault.exe
Token: SeDebugPrivilege	3880	WerFault.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

PO# -RDPLI2020-03060 - PILOT# 154550.exeRegSvcs.exe

description	pid	process	target process
PID 640 wrote to memory of 2884	640	PO# -RDPLI2020-03060 - PILOT# 154550.exe	RegSvcs.exe
PID 640 wrote to memory of 2884	640	PO# -RDPLI2020-03060 - PILOT# 154550.exe	RegSvcs.exe
PID 640 wrote to memory of 2884	640	PO# -RDPLI2020-03060 - PILOT# 154550.exe	RegSvcs.exe
PID 640 wrote to memory of 2884	640	PO# -RDPLI2020-03060 - PILOT# 154550.exe	RegSvcs.exe
PID 640 wrote to memory of 2884	640	PO# -RDPLI2020-03060 - PILOT# 154550.exe	RegSvcs.exe
PID 640 wrote to memory of 2884	640	PO# -RDPLI2020-03060 - PILOT# 154550.exe	RegSvcs.exe
PID 640 wrote to memory of 2884	640	PO# -RDPLI2020-03060 - PILOT# 154550.exe	RegSvcs.exe
PID 640 wrote to memory of 2884	640	PO# -RDPLI2020-03060 - PILOT# 154550.exe	RegSvcs.exe
PID 2884 wrote to memory of 2420	2884	RegSvcs.exe	REG.exe
PID 2884 wrote to memory of 2420	2884	RegSvcs.exe	REG.exe
PID 2884 wrote to memory of 2420	2884	RegSvcs.exe	REG.exe

C:\Users\Admin\AppData\Local\Temp\PO# -RDPLI2020-03060 - PILOT# 154550.exe
"C:\Users\Admin\AppData\Local\Temp\PO# -RDPLI2020-03060 - PILOT# 154550.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:640

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:2884

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:2420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2884 -s 1480
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3880

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/640-0-0x0000000073E00000-0x00000000744EE000-memory.dmp

Filesize
6.9MB

Download
memory/640-1-0x0000000000A60000-0x0000000000A61000-memory.dmp

Filesize
4KB

Download
memory/640-3-0x0000000005380000-0x00000000053DE000-memory.dmp

Filesize
376KB

Download
memory/640-4-0x0000000007FE0000-0x0000000007FE1000-memory.dmp

Filesize
4KB

Download
memory/640-5-0x0000000007D00000-0x0000000007D01000-memory.dmp

Filesize
4KB

Download
memory/640-6-0x0000000007CE0000-0x0000000007CE1000-memory.dmp

Filesize
4KB

Download
memory/640-7-0x0000000002C00000-0x0000000002C03000-memory.dmp

Filesize
12KB

Download
memory/640-8-0x000000000A0F0000-0x000000000A143000-memory.dmp

Filesize
332KB

Download
memory/640-9-0x000000000A1F0000-0x000000000A1F1000-memory.dmp

Filesize
4KB

Download
memory/2420-19-0x0000000000000000-mapping.dmp

Download
memory/2884-23-0x000000000044C6EE-mapping.dmp

Download
memory/2884-25-0x000000000044C6EE-mapping.dmp

Download
memory/2884-11-0x000000000044C6EE-mapping.dmp

Download
memory/2884-18-0x0000000005C30000-0x0000000005C31000-memory.dmp

Filesize
4KB

Download
memory/2884-10-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2884-12-0x0000000073E00000-0x00000000744EE000-memory.dmp

Filesize
6.9MB

Download
memory/2884-21-0x000000000044C6EE-mapping.dmp

Download
memory/2884-22-0x000000000044C6EE-mapping.dmp

Download
memory/2884-17-0x0000000005170000-0x0000000005171000-memory.dmp

Filesize
4KB

Download
memory/2884-28-0x000000000044C6EE-mapping.dmp

Download
memory/2884-26-0x000000000044C6EE-mapping.dmp

Download
memory/2884-24-0x000000000044C6EE-mapping.dmp

Download
memory/2884-27-0x000000000044C6EE-mapping.dmp

Download
memory/2884-30-0x000000000044C6EE-mapping.dmp

Download
memory/2884-31-0x000000000044C6EE-mapping.dmp

Download
memory/2884-29-0x000000000044C6EE-mapping.dmp

Download
memory/2884-32-0x000000000044C6EE-mapping.dmp

Download
memory/3880-20-0x0000000005040000-0x0000000005041000-memory.dmp

Filesize
4KB

Download
memory/3880-33-0x0000000005870000-0x0000000005871000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads