agenttesla | 8fccab27aa3dcbb5ed5ed962f25b2c7016536aaca3f2a5b0624ae2a8ac1c54ae

General

Target

BANK DETAILS.exe
Size

492KB
MD5

8d51581d38bf6d814eeb107d8bb7056c
SHA1

cf22a586b7a298ab0032b20695902d43673d9c17
SHA256

1ab6018047531cee5f411099f396fb8fcdf2c8c20062e9c33118726265ccd5fb
SHA512

54588360eda1bd70c2b8da73297676d9bcbb6db0c56c49fa442308b7fdb1b2429586d9c7db5ccdcd23afc2d39fd5d2e40382faebbbe738ebdf363f13cd1cd563

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.pptoursperu.com
Port:
587
Username:
[email protected]
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
behavioral1/memory/560-56-0x0000000000380000-0x0000000000388000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1492-61-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1492-62-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1492-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1492-64-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral1/memory/1492-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1492-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/560-57-0x0000000004D30000-0x0000000004D86000-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-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

BANK DETAILS.exe

description pid process target process

PID 560 set thread context of 1492 560 BANK DETAILS.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

332 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1492 RegSvcs.exe
1492 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1492 RegSvcs.exe

description	pid	process	target process
PID 560 set thread context of 1492	560	BANK DETAILS.exe	RegSvcs.exe

pid	process
332	REG.exe

pid	process
1492	RegSvcs.exe
1492	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1492	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

BANK DETAILS.exeRegSvcs.exe

description	pid	process	target process
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 560 wrote to memory of 1492	560	BANK DETAILS.exe	RegSvcs.exe
PID 1492 wrote to memory of 332	1492	RegSvcs.exe	REG.exe
PID 1492 wrote to memory of 332	1492	RegSvcs.exe	REG.exe
PID 1492 wrote to memory of 332	1492	RegSvcs.exe	REG.exe
PID 1492 wrote to memory of 332	1492	RegSvcs.exe	REG.exe
PID 1492 wrote to memory of 1068	1492	RegSvcs.exe	netsh.exe
PID 1492 wrote to memory of 1068	1492	RegSvcs.exe	netsh.exe
PID 1492 wrote to memory of 1068	1492	RegSvcs.exe	netsh.exe
PID 1492 wrote to memory of 1068	1492	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\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-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\BANK DETAILS.exe
"C:\Users\Admin\AppData\Local\Temp\BANK DETAILS.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:560

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:1492

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:332

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1068

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/332-70-0x0000000000000000-mapping.dmp

Download
memory/560-54-0x00000000002F0000-0x0000000000372000-memory.dmp

Filesize
520KB

Download
memory/560-55-0x0000000075701000-0x0000000075703000-memory.dmp

Filesize
8KB

Download
memory/560-56-0x0000000000380000-0x0000000000388000-memory.dmp

Filesize
32KB

Download
memory/560-57-0x0000000004D30000-0x0000000004D86000-memory.dmp

Filesize
344KB

Download
memory/1068-71-0x0000000000000000-mapping.dmp

Download
memory/1492-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1492-62-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1492-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1492-64-0x000000000044ABAE-mapping.dmp

Download
memory/1492-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1492-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1492-59-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1492-58-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads