agenttesla | b023dc5c80743dd83a5887e66274553f15d9c787a0186a949b8e3c75595a0d5f

General

Target

IMG-43555_UTR 34444_PDF.exe
Size

940KB
MD5

80a3e56f0e754b838dc4a2c49b44b7ac
SHA1

181d352a869f14512dcfcd475109ca0c628e1ade
SHA256

8846c5d088724ae06915e0e0f987ca3a65fba368095bc73f3109f6cb7841318b
SHA512

17256ee48f88550f4bcabba39c9fe0a1a8ad015be8036ac427948505221af74ef390672247bc8e8ea3105a645760832ef0608a588f74a4e609369935b054f038

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.urban.co.th
Port:
587
Username:
[email protected]
Password:
Urban@1143

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/1468-61-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/1468-62-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/1468-63-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/1468-64-0x00000000004613AE-mapping.dmp	family_agenttesla
behavioral1/memory/1468-66-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/1468-68-0x0000000000400000-0x0000000000466000-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:

IMG-43555_UTR 34444_PDF.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	IMG-43555_UTR 34444_PDF.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	IMG-43555_UTR 34444_PDF.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\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
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.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:

IMG-43555_UTR 34444_PDF.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	IMG-43555_UTR 34444_PDF.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	IMG-43555_UTR 34444_PDF.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

IMG-43555_UTR 34444_PDF.exe

description pid process target process

PID 1944 set thread context of 1468 1944 IMG-43555_UTR 34444_PDF.exe RegSvcs.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

1648 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1468 RegSvcs.exe
1468 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1468 RegSvcs.exe

description	pid	process	target process
PID 1944 set thread context of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe

pid	process
1648	schtasks.exe

pid	process
1468	RegSvcs.exe
1468	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1468	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

IMG-43555_UTR 34444_PDF.exe

description	pid	process	target process
PID 1944 wrote to memory of 1648	1944	IMG-43555_UTR 34444_PDF.exe	schtasks.exe
PID 1944 wrote to memory of 1648	1944	IMG-43555_UTR 34444_PDF.exe	schtasks.exe
PID 1944 wrote to memory of 1648	1944	IMG-43555_UTR 34444_PDF.exe	schtasks.exe
PID 1944 wrote to memory of 1648	1944	IMG-43555_UTR 34444_PDF.exe	schtasks.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.exe
PID 1944 wrote to memory of 1468	1944	IMG-43555_UTR 34444_PDF.exe	RegSvcs.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\IMG-43555_UTR 34444_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\IMG-43555_UTR 34444_PDF.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1944

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xlKLvoqG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp533F.tmp"
2⤵
- Creates scheduled task(s)
PID:1648

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1468

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

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp533F.tmp
Filesize
1KB

MD5
f5162293c30bcc57cf3d464ed7aa1ebf

SHA1
2df39630360079e42610f5e0ae8eb0286ff5ae77

SHA256
db5993484de4abe165fc487e6b6b6347d44a1e8c17cbddd84b1bbafc9b9c4cd9

SHA512
9d335e9b4b316c632e6080303c9b29943001567dc65e95e2458d31afc00e31c349fbcee64b5cd252ec706644848677c3284f656ac0de883a6124e1a54cdac418

Download Submit
memory/1468-61-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1468-58-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1468-59-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1468-62-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1468-63-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1468-64-0x00000000004613AE-mapping.dmp

Download
memory/1468-66-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1468-68-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1468-70-0x00000000746E0000-0x0000000074C8B000-memory.dmp

Filesize
5.7MB

Download
memory/1648-56-0x0000000000000000-mapping.dmp

Download
memory/1944-55-0x00000000746E0000-0x0000000074C8B000-memory.dmp

Filesize
5.7MB

Download
memory/1944-54-0x0000000076191000-0x0000000076193000-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