agenttesla | 9fd56f100c6f272c033ab5a942bffcc3b47d87816c72bfcd4ad6bb2d78e29f10

General

Target

TT COPY.exe
Size

540KB
MD5

8cb73260e8cc3d0f51da164e2f30f9db
SHA1

956cdf7991eff9c64e6d2b9148bec190f347f908
SHA256

89080cc94eae4cab0a8d50729214296a16767368c12a4f679baab998fad152fc
SHA512

fb173cf6d551e2e223010cf2180bdaa289ee1f531c64345663caed9496ee59f9edaf6fb18028516f37b805e0b57522b63ab858578705431a891dfbc8ea92a2e9

Score

10^/10

agenttesla collection coreentity evasion keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.microtechlab.in
Port:
587
Username:
[email protected]
Password:
pune@123

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/1576-56-0x00000000003A0000-0x00000000003A8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1324-61-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1324-62-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1324-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1324-64-0x000000000044CF5E-mapping.dmp	family_agenttesla
behavioral1/memory/1324-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1324-68-0x0000000000400000-0x0000000000452000-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/1576-57-0x00000000050F0000-0x0000000005148000-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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

TT COPY.exe

description pid process target process

PID 1576 set thread context of 1324 1576 TT COPY.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1548 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1324 RegSvcs.exe
1324 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

TT COPY.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1576 TT COPY.exe
Token: SeDebugPrivilege 1324 RegSvcs.exe

description	pid	process	target process
PID 1576 set thread context of 1324	1576	TT COPY.exe	RegSvcs.exe

pid	process
1548	REG.exe

pid	process
1324	RegSvcs.exe
1324	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1576	TT COPY.exe
Token: SeDebugPrivilege	1324	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

TT COPY.exeRegSvcs.exe

description	pid	process	target process
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1576 wrote to memory of 1324	1576	TT COPY.exe	RegSvcs.exe
PID 1324 wrote to memory of 1548	1324	RegSvcs.exe	REG.exe
PID 1324 wrote to memory of 1548	1324	RegSvcs.exe	REG.exe
PID 1324 wrote to memory of 1548	1324	RegSvcs.exe	REG.exe
PID 1324 wrote to memory of 1548	1324	RegSvcs.exe	REG.exe
PID 1324 wrote to memory of 1708	1324	RegSvcs.exe	netsh.exe
PID 1324 wrote to memory of 1708	1324	RegSvcs.exe	netsh.exe
PID 1324 wrote to memory of 1708	1324	RegSvcs.exe	netsh.exe
PID 1324 wrote to memory of 1708	1324	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\TT COPY.exe
"C:\Users\Admin\AppData\Local\Temp\TT COPY.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1576

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1324

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:1548

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1708

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/1324-64-0x000000000044CF5E-mapping.dmp

Download
memory/1324-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1324-69-0x0000000075721000-0x0000000075723000-memory.dmp

Filesize
8KB

Download
memory/1324-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1324-58-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1324-59-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1324-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1324-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1324-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1548-70-0x0000000000000000-mapping.dmp

Download
memory/1576-54-0x0000000000C90000-0x0000000000D20000-memory.dmp

Filesize
576KB

Download
memory/1576-55-0x0000000000680000-0x00000000006E2000-memory.dmp

Filesize
392KB

Download
memory/1576-57-0x00000000050F0000-0x0000000005148000-memory.dmp

Filesize
352KB

Download
memory/1576-56-0x00000000003A0000-0x00000000003A8000-memory.dmp

Filesize
32KB

Download
memory/1708-71-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads