agenttesla | 256487f56f6ad99c043971e91572ccbe41f80b2f3e4a784323b483968c02d203

General

Target

Shipmment Details.doc..exe
Size

483KB
MD5

ca3d8f1c6b86d36e95f6c77f56586c25
SHA1

e06640e1c6b22441a87b60bdb93e8af246c3e3be
SHA256

e386fd9c2ec4caa4a12389d0d1c20e870a0955eeb3ab5c72e7c1eab18ca2efb1
SHA512

2afcd73f31a03ef87362d8187d9ab858556e82050fc818f35df788f2091288b295815936e83359524b31bb7cccc6f39768473dc5459d4e3d04725e7fc776a47b

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.hotel71.com.bd
Port:
587
Username:
[email protected]
Password:
9+^va&phP1v9

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/1516-56-0x00000000002C0000-0x00000000002C8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2016-61-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2016-62-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2016-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2016-64-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral1/memory/2016-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2016-68-0x0000000000400000-0x0000000000450000-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/1516-57-0x0000000000890000-0x00000000008E8000-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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Shipmment Details.doc..exe

description pid process target process

PID 1516 set thread context of 2016 1516 Shipmment Details.doc..exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

112 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

2016 RegSvcs.exe
2016 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 2016 RegSvcs.exe

description	pid	process	target process
PID 1516 set thread context of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe

pid	process
112	REG.exe

pid	process
2016	RegSvcs.exe
2016	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	2016	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Shipmment Details.doc..exeRegSvcs.exe

description	pid	process	target process
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 1516 wrote to memory of 2016	1516	Shipmment Details.doc..exe	RegSvcs.exe
PID 2016 wrote to memory of 112	2016	RegSvcs.exe	REG.exe
PID 2016 wrote to memory of 112	2016	RegSvcs.exe	REG.exe
PID 2016 wrote to memory of 112	2016	RegSvcs.exe	REG.exe
PID 2016 wrote to memory of 112	2016	RegSvcs.exe	REG.exe
PID 2016 wrote to memory of 1584	2016	RegSvcs.exe	netsh.exe
PID 2016 wrote to memory of 1584	2016	RegSvcs.exe	netsh.exe
PID 2016 wrote to memory of 1584	2016	RegSvcs.exe	netsh.exe
PID 2016 wrote to memory of 1584	2016	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Shipmment Details.doc..exe
"C:\Users\Admin\AppData\Local\Temp\Shipmment Details.doc..exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1516

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:2016

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:112

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1584

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/112-70-0x0000000000000000-mapping.dmp

Download
memory/1516-54-0x0000000000960000-0x00000000009DE000-memory.dmp

Filesize
504KB

Download
memory/1516-55-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

Filesize
8KB

Download
memory/1516-56-0x00000000002C0000-0x00000000002C8000-memory.dmp

Filesize
32KB

Download
memory/1516-57-0x0000000000890000-0x00000000008E8000-memory.dmp

Filesize
352KB

Download
memory/1584-71-0x0000000000000000-mapping.dmp

Download
memory/2016-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2016-62-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2016-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2016-64-0x000000000044AC5E-mapping.dmp

Download
memory/2016-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2016-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2016-58-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2016-59-0x0000000000400000-0x0000000000450000-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