agenttesla | 51b5b0a97829aad9caf7fe1dc267dc8f5119029c1dc394a3c96337ee370e34c6

General

Target

A7CT89pG6e5swNF.exe
Size

415KB
MD5

16519b78e0a1e678716dbbfd2283d946
SHA1

4a0dd4993dd92e8690ac08109738212dd6b7d677
SHA256

fd443146a204defbec7fec9e24c97cd70e2eba3d8bac15a1f792b32d5cd456e9
SHA512

35d62bdcc662475e448ddfd77491bad2773b110a1b7eff1fe991ba13fe8b211bb9b0ad6feef9b6d70e43e38fd7598f7a606fcbf7e30d71f3fbc4cf79e635929c

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.healthplusuae.com
Port:
587
Username:
[email protected]
Password:
basheer7648903

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/308-56-0x0000000000560000-0x0000000000568000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/468-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/468-64-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/468-65-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/468-66-0x000000000044A7FE-mapping.dmp	family_agenttesla
behavioral1/memory/468-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/468-70-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/308-57-0x0000000005DB0000-0x0000000005E06000-memory.dmp	rezer0

Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

A7CT89pG6e5swNF.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	A7CT89pG6e5swNF.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	A7CT89pG6e5swNF.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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

A7CT89pG6e5swNF.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	A7CT89pG6e5swNF.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	A7CT89pG6e5swNF.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	A7CT89pG6e5swNF.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

A7CT89pG6e5swNF.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	A7CT89pG6e5swNF.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	A7CT89pG6e5swNF.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

A7CT89pG6e5swNF.exe

description pid process target process

PID 308 set thread context of 468 308 A7CT89pG6e5swNF.exe A7CT89pG6e5swNF.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

1708 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

A7CT89pG6e5swNF.exeA7CT89pG6e5swNF.exe

pid process

308 A7CT89pG6e5swNF.exe
308 A7CT89pG6e5swNF.exe
308 A7CT89pG6e5swNF.exe
468 A7CT89pG6e5swNF.exe
468 A7CT89pG6e5swNF.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

A7CT89pG6e5swNF.exeA7CT89pG6e5swNF.exe

description pid process

Token: SeDebugPrivilege 308 A7CT89pG6e5swNF.exe
Token: SeDebugPrivilege 468 A7CT89pG6e5swNF.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

A7CT89pG6e5swNF.exe

pid process

468 A7CT89pG6e5swNF.exe

description	pid	process	target process
PID 308 set thread context of 468	308	A7CT89pG6e5swNF.exe	A7CT89pG6e5swNF.exe

pid	process
1708	schtasks.exe

pid	process
308	A7CT89pG6e5swNF.exe
308	A7CT89pG6e5swNF.exe
308	A7CT89pG6e5swNF.exe
468	A7CT89pG6e5swNF.exe
468	A7CT89pG6e5swNF.exe

description	pid	process
Token: SeDebugPrivilege	308	A7CT89pG6e5swNF.exe
Token: SeDebugPrivilege	468	A7CT89pG6e5swNF.exe

pid	process
468	A7CT89pG6e5swNF.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

A7CT89pG6e5swNF.exeA7CT89pG6e5swNF.exe

description	pid	process	target process
PID 308 wrote to memory of 1708	308	A7CT89pG6e5swNF.exe	schtasks.exe
PID 308 wrote to memory of 1708	308	A7CT89pG6e5swNF.exe	schtasks.exe
PID 308 wrote to memory of 1708	308	A7CT89pG6e5swNF.exe	schtasks.exe
PID 308 wrote to memory of 1708	308	A7CT89pG6e5swNF.exe	schtasks.exe
PID 308 wrote to memory of 468	308	A7CT89pG6e5swNF.exe	A7CT89pG6e5swNF.exe
PID 308 wrote to memory of 468	308	A7CT89pG6e5swNF.exe	A7CT89pG6e5swNF.exe
PID 308 wrote to memory of 468	308	A7CT89pG6e5swNF.exe	A7CT89pG6e5swNF.exe
PID 308 wrote to memory of 468	308	A7CT89pG6e5swNF.exe	A7CT89pG6e5swNF.exe
PID 308 wrote to memory of 468	308	A7CT89pG6e5swNF.exe	A7CT89pG6e5swNF.exe
PID 308 wrote to memory of 468	308	A7CT89pG6e5swNF.exe	A7CT89pG6e5swNF.exe
PID 308 wrote to memory of 468	308	A7CT89pG6e5swNF.exe	A7CT89pG6e5swNF.exe
PID 308 wrote to memory of 468	308	A7CT89pG6e5swNF.exe	A7CT89pG6e5swNF.exe
PID 308 wrote to memory of 468	308	A7CT89pG6e5swNF.exe	A7CT89pG6e5swNF.exe
PID 468 wrote to memory of 1884	468	A7CT89pG6e5swNF.exe	netsh.exe
PID 468 wrote to memory of 1884	468	A7CT89pG6e5swNF.exe	netsh.exe
PID 468 wrote to memory of 1884	468	A7CT89pG6e5swNF.exe	netsh.exe
PID 468 wrote to memory of 1884	468	A7CT89pG6e5swNF.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

A7CT89pG6e5swNF.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	A7CT89pG6e5swNF.exe

outlook_win_path 1 IoCs

Processes:

A7CT89pG6e5swNF.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	A7CT89pG6e5swNF.exe

C:\Users\Admin\AppData\Local\Temp\A7CT89pG6e5swNF.exe
"C:\Users\Admin\AppData\Local\Temp\A7CT89pG6e5swNF.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:308

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yfhIplSQTCu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp11EC.tmp"
2⤵
- Creates scheduled task(s)
PID:1708

C:\Users\Admin\AppData\Local\Temp\A7CT89pG6e5swNF.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:468

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1884

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

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

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\tmp11EC.tmp
Filesize
1KB

MD5
b255e46e5db475bd84dc8563d690bda1

SHA1
6b9287288c1f96561480557e89200d611bd82ca4

SHA256
90f8c3e1fd6ebda542fef8783c348bc3e8ca1d9250eab8c9195e47a03b4617d4

SHA512
eda107de357432d7427613f9915fe4f64806a81f793efd4ba8a07f2a1287ff488a7a35aaa59b632bf985409edbb04cbd507853758e1d7eae61938885141523ac

Download Submit
memory/308-55-0x0000000075501000-0x0000000075503000-memory.dmp

Filesize
8KB

Download
memory/308-56-0x0000000000560000-0x0000000000568000-memory.dmp

Filesize
32KB

Download
memory/308-57-0x0000000005DB0000-0x0000000005E06000-memory.dmp

Filesize
344KB

Download
memory/308-54-0x0000000000A20000-0x0000000000A8E000-memory.dmp

Filesize
440KB

Download
memory/468-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-65-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-66-0x000000000044A7FE-mapping.dmp

Download
memory/468-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-70-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1708-58-0x0000000000000000-mapping.dmp

Download
memory/1884-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads