agenttesla | 8a98251d21737443a4f65476f3e460569431094581b8a458b0a1bbb06f358114

General

Target

New Invoice.exe
Size

417KB
MD5

ee2432ab09fc8dda38d558b392e68a71
SHA1

b9b8f01054cc7eac210012b7305c708a703960f4
SHA256

78dc559f3c971bf8fe5eb3f669a3b8de8c18313d2c466916fc32fd27ea352700
SHA512

66cbec40db972e9e27ffc1a74f7b59d3499736d8bd74a7822800e90d8f8d15438041c58b6b39d16f25e2cfb15d27f496642c10a26c8622d437d23056a0dd6833

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.rajapindah.com
Port:
587
Username:
[email protected]
Password:
#r4j#citeureup#13

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/1404-56-0x0000000000590000-0x0000000000598000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1132-61-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1132-62-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1132-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1132-64-0x000000000044B25E-mapping.dmp	family_agenttesla
behavioral1/memory/1132-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1132-68-0x0000000000400000-0x0000000000450000-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/1404-57-0x0000000002110000-0x0000000002168000-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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

New Invoice.exe

description pid process target process

PID 1404 set thread context of 1132 1404 New Invoice.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1376 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1132 RegSvcs.exe
1132 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1132 RegSvcs.exe

description	pid	process	target process
PID 1404 set thread context of 1132	1404	New Invoice.exe	RegSvcs.exe

pid	process
1376	REG.exe

pid	process
1132	RegSvcs.exe
1132	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1132	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

New Invoice.exeRegSvcs.exe

description	pid	process	target process
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1404 wrote to memory of 1132	1404	New Invoice.exe	RegSvcs.exe
PID 1132 wrote to memory of 1376	1132	RegSvcs.exe	REG.exe
PID 1132 wrote to memory of 1376	1132	RegSvcs.exe	REG.exe
PID 1132 wrote to memory of 1376	1132	RegSvcs.exe	REG.exe
PID 1132 wrote to memory of 1376	1132	RegSvcs.exe	REG.exe
PID 1132 wrote to memory of 1976	1132	RegSvcs.exe	netsh.exe
PID 1132 wrote to memory of 1976	1132	RegSvcs.exe	netsh.exe
PID 1132 wrote to memory of 1976	1132	RegSvcs.exe	netsh.exe
PID 1132 wrote to memory of 1976	1132	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\New Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\New Invoice.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1404

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:1132

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:1376

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1976

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/1132-64-0x000000000044B25E-mapping.dmp

Download
memory/1132-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1132-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1132-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1132-58-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1132-59-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1132-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1132-62-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1376-70-0x0000000000000000-mapping.dmp

Download
memory/1404-55-0x0000000075A61000-0x0000000075A63000-memory.dmp

Filesize
8KB

Download
memory/1404-54-0x0000000000200000-0x000000000026E000-memory.dmp

Filesize
440KB

Download
memory/1404-57-0x0000000002110000-0x0000000002168000-memory.dmp

Filesize
352KB

Download
memory/1404-56-0x0000000000590000-0x0000000000598000-memory.dmp

Filesize
32KB

Download
memory/1976-71-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads