agenttesla | dccf76439fbd7e0afbaf8b56edda49b8a842c4b9447a9ebcf71874a622abe2c8

General

Target

SOA_JAN_MAY_20_doc.exe
Size

500KB
MD5

2e1a3f171e9adfb0cbd28a59a72409e3
SHA1

5a2b23a48bc746f333663baffbe9b8e166a72008
SHA256

dccf76439fbd7e0afbaf8b56edda49b8a842c4b9447a9ebcf71874a622abe2c8
SHA512

91da04f3ff9f893e1d4fe7f1475ab525d5b75bc021d3d6ce746b94988ae246a0970d6841be1b6fe8f7c4cd79bc6215d10547c4b02158630a2f8c6a1412a1a057

Score

10^/10

agenttesla coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.pptoursperu.com
Port:
587
Username:
info@pptoursperu.com
Password:
mailppt2019-

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/3160-6-0x00000000049E0000-0x00000000049E3000-memory.dmp	coreentity

AgentTesla Payload 16 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3488-9-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral2/memory/3488-10-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-21-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-22-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-23-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-24-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-25-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-26-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-28-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-27-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-30-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-29-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-31-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-32-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-33-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/3488-34-0x000000000044ABAE-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/3160-7-0x000000000A950000-0x000000000A9A1000-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:

SOA_JAN_MAY_20_doc.exe

description pid process target process

PID 3160 set thread context of 3488 3160 SOA_JAN_MAY_20_doc.exe RegSvcs.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3124 3488 WerFault.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

2072 REG.exe

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

description	pid	process	target process
PID 3160 set thread context of 3488	3160	SOA_JAN_MAY_20_doc.exe	RegSvcs.exe

pid	pid_target	process	target process
3124	3488	WerFault.exe	RegSvcs.exe

pid	process
2072	REG.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

RegSvcs.exeWerFault.exe

pid	process
3488	RegSvcs.exe
3488	RegSvcs.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe
3124	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

SOA_JAN_MAY_20_doc.exeRegSvcs.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	3160	SOA_JAN_MAY_20_doc.exe
Token: SeDebugPrivilege	3488	RegSvcs.exe
Token: SeRestorePrivilege	3124	WerFault.exe
Token: SeBackupPrivilege	3124	WerFault.exe
Token: SeDebugPrivilege	3124	WerFault.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

SOA_JAN_MAY_20_doc.exe

pid process

3160 SOA_JAN_MAY_20_doc.exe
3160 SOA_JAN_MAY_20_doc.exe

pid	process
3160	SOA_JAN_MAY_20_doc.exe
3160	SOA_JAN_MAY_20_doc.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

SOA_JAN_MAY_20_doc.exeRegSvcs.exe

description	pid	process	target process
PID 3160 wrote to memory of 3488	3160	SOA_JAN_MAY_20_doc.exe	RegSvcs.exe
PID 3160 wrote to memory of 3488	3160	SOA_JAN_MAY_20_doc.exe	RegSvcs.exe
PID 3160 wrote to memory of 3488	3160	SOA_JAN_MAY_20_doc.exe	RegSvcs.exe
PID 3160 wrote to memory of 3488	3160	SOA_JAN_MAY_20_doc.exe	RegSvcs.exe
PID 3160 wrote to memory of 3488	3160	SOA_JAN_MAY_20_doc.exe	RegSvcs.exe
PID 3160 wrote to memory of 3488	3160	SOA_JAN_MAY_20_doc.exe	RegSvcs.exe
PID 3160 wrote to memory of 3488	3160	SOA_JAN_MAY_20_doc.exe	RegSvcs.exe
PID 3160 wrote to memory of 3488	3160	SOA_JAN_MAY_20_doc.exe	RegSvcs.exe
PID 3488 wrote to memory of 2072	3488	RegSvcs.exe	REG.exe
PID 3488 wrote to memory of 2072	3488	RegSvcs.exe	REG.exe
PID 3488 wrote to memory of 2072	3488	RegSvcs.exe	REG.exe
PID 3488 wrote to memory of 2112	3488	RegSvcs.exe	netsh.exe
PID 3488 wrote to memory of 2112	3488	RegSvcs.exe	netsh.exe
PID 3488 wrote to memory of 2112	3488	RegSvcs.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\SOA_JAN_MAY_20_doc.exe
"C:\Users\Admin\AppData\Local\Temp\SOA_JAN_MAY_20_doc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3160

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:3488

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:2072

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:2112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3488 -s 1516
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3124

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/2072-18-0x0000000000000000-mapping.dmp

Download
memory/2112-19-0x0000000000000000-mapping.dmp

Download
memory/3124-36-0x00000000050E0000-0x00000000050E1000-memory.dmp

Filesize
4KB

Download
memory/3124-20-0x00000000049B0000-0x00000000049B1000-memory.dmp

Filesize
4KB

Download
memory/3160-8-0x000000000ABA0000-0x000000000ABA1000-memory.dmp

Filesize
4KB

Download
memory/3160-5-0x00000000074B0000-0x00000000074B1000-memory.dmp

Filesize
4KB

Download
memory/3160-7-0x000000000A950000-0x000000000A9A1000-memory.dmp

Filesize
324KB

Download
memory/3160-0-0x00000000733D0000-0x0000000073ABE000-memory.dmp

Filesize
6.9MB

Download
memory/3160-1-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/3160-6-0x00000000049E0000-0x00000000049E3000-memory.dmp

Filesize
12KB

Download
memory/3160-3-0x00000000078E0000-0x00000000078E1000-memory.dmp

Filesize
4KB

Download
memory/3160-4-0x00000000074C0000-0x00000000074C1000-memory.dmp

Filesize
4KB

Download
memory/3488-22-0x000000000044ABAE-mapping.dmp

Download
memory/3488-26-0x000000000044ABAE-mapping.dmp

Download
memory/3488-16-0x0000000005850000-0x0000000005851000-memory.dmp

Filesize
4KB

Download
memory/3488-11-0x00000000733D0000-0x0000000073ABE000-memory.dmp

Filesize
6.9MB

Download
memory/3488-21-0x000000000044ABAE-mapping.dmp

Download
memory/3488-10-0x000000000044ABAE-mapping.dmp

Download
memory/3488-23-0x000000000044ABAE-mapping.dmp

Download
memory/3488-24-0x000000000044ABAE-mapping.dmp

Download
memory/3488-25-0x000000000044ABAE-mapping.dmp

Download
memory/3488-17-0x00000000064B0000-0x00000000064B1000-memory.dmp

Filesize
4KB

Download
memory/3488-28-0x000000000044ABAE-mapping.dmp

Download
memory/3488-27-0x000000000044ABAE-mapping.dmp

Download
memory/3488-30-0x000000000044ABAE-mapping.dmp

Download
memory/3488-29-0x000000000044ABAE-mapping.dmp

Download
memory/3488-31-0x000000000044ABAE-mapping.dmp

Download
memory/3488-32-0x000000000044ABAE-mapping.dmp

Download
memory/3488-33-0x000000000044ABAE-mapping.dmp

Download
memory/3488-34-0x000000000044ABAE-mapping.dmp

Download
memory/3488-9-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads