agenttesla | 662a77059801cc051b854179f16c3980d16ff69e03ffec1b7b6ac212e82d90f9

General

Target

invoice#2347930.exe
Size

678KB
MD5

023ca5b91965a4ea652154c839dd33c6
SHA1

76bdbfb5e42ac74ffd79773bc28d2edbb05bd224
SHA256

48d31b2e1bea5847cde1ae85f6f9997d6dc301222463971a713e381e3fb2d1e8
SHA512

d43547d161054c72eadf4fd6ec8d202f3e1774f941c8ffcbba2dcc26009998f1439b255046ceb349eb16fb5c0e0287993ba86de4f29ef6135b2b13af6bd1fda7

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.cybix.in
Port:
587
Username:
[email protected]
Password:
cybix@16july

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/556-64-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/556-65-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/556-66-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/556-67-0x000000000044704E-mapping.dmp	family_agenttesla
behavioral1/memory/556-69-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/556-71-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
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:

invoice#2347930.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	invoice#2347930.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	invoice#2347930.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:

invoice#2347930.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	invoice#2347930.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice#2347930.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice#2347930.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:

invoice#2347930.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	invoice#2347930.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	invoice#2347930.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

invoice#2347930.exe

description pid process target process

PID 1116 set thread context of 556 1116 invoice#2347930.exe invoice#2347930.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

2012 schtasks.exe

description	pid	process	target process
PID 1116 set thread context of 556	1116	invoice#2347930.exe	invoice#2347930.exe

pid	process
2012	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

invoice#2347930.exeinvoice#2347930.exe

pid	process
1116	invoice#2347930.exe
1116	invoice#2347930.exe
1116	invoice#2347930.exe
1116	invoice#2347930.exe
1116	invoice#2347930.exe
556	invoice#2347930.exe
556	invoice#2347930.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

invoice#2347930.exeinvoice#2347930.exe

description pid process

Token: SeDebugPrivilege 1116 invoice#2347930.exe
Token: SeDebugPrivilege 556 invoice#2347930.exe

description	pid	process
Token: SeDebugPrivilege	1116	invoice#2347930.exe
Token: SeDebugPrivilege	556	invoice#2347930.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

invoice#2347930.exe

description	pid	process	target process
PID 1116 wrote to memory of 2012	1116	invoice#2347930.exe	schtasks.exe
PID 1116 wrote to memory of 2012	1116	invoice#2347930.exe	schtasks.exe
PID 1116 wrote to memory of 2012	1116	invoice#2347930.exe	schtasks.exe
PID 1116 wrote to memory of 2012	1116	invoice#2347930.exe	schtasks.exe
PID 1116 wrote to memory of 556	1116	invoice#2347930.exe	invoice#2347930.exe
PID 1116 wrote to memory of 556	1116	invoice#2347930.exe	invoice#2347930.exe
PID 1116 wrote to memory of 556	1116	invoice#2347930.exe	invoice#2347930.exe
PID 1116 wrote to memory of 556	1116	invoice#2347930.exe	invoice#2347930.exe
PID 1116 wrote to memory of 556	1116	invoice#2347930.exe	invoice#2347930.exe
PID 1116 wrote to memory of 556	1116	invoice#2347930.exe	invoice#2347930.exe
PID 1116 wrote to memory of 556	1116	invoice#2347930.exe	invoice#2347930.exe
PID 1116 wrote to memory of 556	1116	invoice#2347930.exe	invoice#2347930.exe
PID 1116 wrote to memory of 556	1116	invoice#2347930.exe	invoice#2347930.exe

outlook_office_path 1 IoCs

Processes:

invoice#2347930.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	invoice#2347930.exe

outlook_win_path 1 IoCs

Processes:

invoice#2347930.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	invoice#2347930.exe

C:\Users\Admin\AppData\Local\Temp\invoice#2347930.exe
"C:\Users\Admin\AppData\Local\Temp\invoice#2347930.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:1116

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pHqSfGF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5AAF.tmp"
2⤵
- Creates scheduled task(s)
PID:2012

C:\Users\Admin\AppData\Local\Temp\invoice#2347930.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:556

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5AAF.tmp
Filesize
1KB

MD5
e613a7a4d6f2181f9b91b4a1cc7f3dc9

SHA1
0c070f81e6ff970e4bf815c773f61d0c8a98f49f

SHA256
c794183a30b95c4871e8ee88bc8e6d534fe11218905d70a20c3042388a834ae8

SHA512
b2027442fec333095f0d3e5a32f4ab291ce60dc3c1b2f11c06a052cfba811aea236fcca19aa7d81ecaffca974e5b219122d77d882932513e179aca18fb299de5

Download Submit
memory/556-64-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/556-66-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/556-71-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/556-69-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/556-67-0x000000000044704E-mapping.dmp

Download
memory/556-65-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/556-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/556-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1116-54-0x0000000000FC0000-0x000000000106E000-memory.dmp

Filesize
696KB

Download
memory/1116-55-0x0000000075451000-0x0000000075453000-memory.dmp

Filesize
8KB

Download
memory/1116-56-0x0000000000550000-0x0000000000560000-memory.dmp

Filesize
64KB

Download
memory/1116-58-0x0000000000C20000-0x0000000000C6C000-memory.dmp

Filesize
304KB

Download
memory/1116-57-0x0000000004A20000-0x0000000004A7C000-memory.dmp

Filesize
368KB

Download
memory/2012-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads