agenttesla | b04dc35a8144fff2f2506da1a61471a505f84832545c96bd2e2d3d741a2eafb1

General

Target

Swiq7jfYQ3Wi3x8.exe
Size

502KB
MD5

a6acb89b4a2941b7060b006034447d96
SHA1

87692775b716269bce60515041030854aabbafa7
SHA256

3168af462696c8edf2bb2ab1537782ca60135573d977c6d3264ca2069871d9b5
SHA512

ffb9e8c7ba28575930f58999254ae06a2042011457ac1ae8860e083139b36a8e6069e6a3bfe9aca666728cffcb82378ec18c11223e97d1eb5505befd4ec2f870

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.cpworldindia.com
Port:
587
Username:
[email protected]
Password:
bopo@2014

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/784-56-0x00000000008E0000-0x00000000008E8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1980-61-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1980-62-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1980-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1980-64-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral1/memory/1980-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1980-68-0x0000000000400000-0x0000000000452000-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/784-57-0x0000000004860000-0x00000000048BA000-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-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Swiq7jfYQ3Wi3x8.exe

description pid process target process

PID 784 set thread context of 1980 784 Swiq7jfYQ3Wi3x8.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1100 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1980 RegSvcs.exe
1980 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1980 RegSvcs.exe

description	pid	process	target process
PID 784 set thread context of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe

pid	process
1100	REG.exe

pid	process
1980	RegSvcs.exe
1980	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1980	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Swiq7jfYQ3Wi3x8.exeRegSvcs.exe

description	pid	process	target process
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 784 wrote to memory of 1980	784	Swiq7jfYQ3Wi3x8.exe	RegSvcs.exe
PID 1980 wrote to memory of 1100	1980	RegSvcs.exe	REG.exe
PID 1980 wrote to memory of 1100	1980	RegSvcs.exe	REG.exe
PID 1980 wrote to memory of 1100	1980	RegSvcs.exe	REG.exe
PID 1980 wrote to memory of 1100	1980	RegSvcs.exe	REG.exe
PID 1980 wrote to memory of 1848	1980	RegSvcs.exe	netsh.exe
PID 1980 wrote to memory of 1848	1980	RegSvcs.exe	netsh.exe
PID 1980 wrote to memory of 1848	1980	RegSvcs.exe	netsh.exe
PID 1980 wrote to memory of 1848	1980	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\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-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Swiq7jfYQ3Wi3x8.exe
"C:\Users\Admin\AppData\Local\Temp\Swiq7jfYQ3Wi3x8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:784

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:1980

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:1100

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1848

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/784-54-0x0000000000AE0000-0x0000000000B64000-memory.dmp

Filesize
528KB

Download
memory/784-55-0x0000000076391000-0x0000000076393000-memory.dmp

Filesize
8KB

Download
memory/784-56-0x00000000008E0000-0x00000000008E8000-memory.dmp

Filesize
32KB

Download
memory/784-57-0x0000000004860000-0x00000000048BA000-memory.dmp

Filesize
360KB

Download
memory/1100-70-0x0000000000000000-mapping.dmp

Download
memory/1848-71-0x0000000000000000-mapping.dmp

Download
memory/1980-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-64-0x000000000044CEEE-mapping.dmp

Download
memory/1980-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-59-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-58-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads