agenttesla | 485c8a8ef8e81296c121ef23c12c80579b7d7c62426f62288fa10aee04d4e704

General

Target

PO#CWA006635.exe
Size

414KB
MD5

8cf823ee0766126638d33918383ca5d8
SHA1

3b215b084b9ff049a860fc29108f62c4b6d2133b
SHA256

6de7efc9e04cb4db0acc603a7ed700b186d0545acd0e8e84a1d8cce668202dc8
SHA512

41cd0278ebb15faddd178fb826e8dc74021980f09b94ff785b1b6d88d5504c2e7b37450484666fd7a00e3c3e865459ace696c41ad84e4d0630d1ef893e93ed94

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:
import.cs@ahd.cpworldindia.com
Password:
imprtcs@2019

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/2024-56-0x0000000000750000-0x0000000000758000-memory.dmp	coreentity

AgentTesla payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/992-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/992-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/992-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/992-66-0x000000000044C91E-mapping.dmp	family_agenttesla
behavioral1/memory/992-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/992-70-0x0000000000400000-0x0000000000452000-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/2024-57-0x0000000004A40000-0x0000000004A98000-memory.dmp	rezer0

Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

PO#CWA006635.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts PO#CWA006635.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	PO#CWA006635.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

PO#CWA006635.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	PO#CWA006635.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#CWA006635.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#CWA006635.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PO#CWA006635.exe

description pid process target process

PID 2024 set thread context of 992 2024 PO#CWA006635.exe PO#CWA006635.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1144 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

928 REG.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

PO#CWA006635.exePO#CWA006635.exe

pid process

2024 PO#CWA006635.exe
2024 PO#CWA006635.exe
992 PO#CWA006635.exe
992 PO#CWA006635.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO#CWA006635.exePO#CWA006635.exe

description pid process

Token: SeDebugPrivilege 2024 PO#CWA006635.exe
Token: SeDebugPrivilege 992 PO#CWA006635.exe

description	pid	process	target process
PID 2024 set thread context of 992	2024	PO#CWA006635.exe	PO#CWA006635.exe

pid	process
1144	schtasks.exe

pid	process
928	REG.exe

pid	process
2024	PO#CWA006635.exe
2024	PO#CWA006635.exe
992	PO#CWA006635.exe
992	PO#CWA006635.exe

description	pid	process
Token: SeDebugPrivilege	2024	PO#CWA006635.exe
Token: SeDebugPrivilege	992	PO#CWA006635.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

PO#CWA006635.exePO#CWA006635.exe

description	pid	process	target process
PID 2024 wrote to memory of 1144	2024	PO#CWA006635.exe	schtasks.exe
PID 2024 wrote to memory of 1144	2024	PO#CWA006635.exe	schtasks.exe
PID 2024 wrote to memory of 1144	2024	PO#CWA006635.exe	schtasks.exe
PID 2024 wrote to memory of 1144	2024	PO#CWA006635.exe	schtasks.exe
PID 2024 wrote to memory of 840	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 840	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 840	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 840	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 992	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 992	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 992	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 992	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 992	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 992	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 992	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 992	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 2024 wrote to memory of 992	2024	PO#CWA006635.exe	PO#CWA006635.exe
PID 992 wrote to memory of 928	992	PO#CWA006635.exe	REG.exe
PID 992 wrote to memory of 928	992	PO#CWA006635.exe	REG.exe
PID 992 wrote to memory of 928	992	PO#CWA006635.exe	REG.exe
PID 992 wrote to memory of 928	992	PO#CWA006635.exe	REG.exe
PID 992 wrote to memory of 2020	992	PO#CWA006635.exe	netsh.exe
PID 992 wrote to memory of 2020	992	PO#CWA006635.exe	netsh.exe
PID 992 wrote to memory of 2020	992	PO#CWA006635.exe	netsh.exe
PID 992 wrote to memory of 2020	992	PO#CWA006635.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

PO#CWA006635.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	PO#CWA006635.exe

outlook_win_path 1 IoCs

Processes:

PO#CWA006635.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	PO#CWA006635.exe

C:\Users\Admin\AppData\Local\Temp\PO#CWA006635.exe
"C:\Users\Admin\AppData\Local\Temp\PO#CWA006635.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2024

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FzcrWS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1314.tmp"
2⤵
- Creates scheduled task(s)
PID:1144

C:\Users\Admin\AppData\Local\Temp\PO#CWA006635.exe
"{path}"
2⤵
PID:840

C:\Users\Admin\AppData\Local\Temp\PO#CWA006635.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:992

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:928

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:2020

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1314.tmp
Filesize
1KB

MD5
14d6dd7fd4cbc5a808cbaa4d88f20312

SHA1
474cedd366d6691b96d29581c7c606e5f217608b

SHA256
e994b340ec41b58072f693a1fbcef7ef0005c196f8d715518fd8af3c1a8ef2d9

SHA512
a4dd325dd0c9fae25e0130a7b0ca933dbf669001139968df4e0d01d03b6042d59fce1902424155bf324fa1ddec8b7f1560465b117468ae63cff090ce6f13ea14

Download Submit
memory/928-72-0x0000000000000000-mapping.dmp

Download
memory/992-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/992-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/992-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/992-66-0x000000000044C91E-mapping.dmp

Download
memory/992-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/992-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/992-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/992-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1144-58-0x0000000000000000-mapping.dmp

Download
memory/2020-73-0x0000000000000000-mapping.dmp

Download
memory/2024-57-0x0000000004A40000-0x0000000004A98000-memory.dmp

Filesize
352KB

Download
memory/2024-56-0x0000000000750000-0x0000000000758000-memory.dmp

Filesize
32KB

Download
memory/2024-54-0x0000000000180000-0x00000000001EE000-memory.dmp

Filesize
440KB

Download
memory/2024-55-0x0000000076011000-0x0000000076013000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads