agenttesla | b32a02101d861d4964cbc3873d544f13ea3bbc22f9de62679fd4cfc09dd3f863

General

Target

IMG_001.PDF .scr
Size

801KB
MD5

ea7e544c5ce02aa13442622b95251675
SHA1

98a25cacce296e3aff2fb569a1453329f5690b5e
SHA256

d2eac9fe75330d388b2f86c4c90d4d34f5f92caea368386414ca576feb70343e
SHA512

31334cc35753923df9ea752bd0b81913fd3ec92b5c144345486bf832c7180ff2b15cb533ad2f3f21fd360acbc0aa4c284eb90b39aa892bae71b0d72e65046e82

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
wRwswHW2

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/324-60-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/324-61-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/324-62-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/324-63-0x0000000000447AAE-mapping.dmp	family_agenttesla
behavioral1/memory/324-65-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/324-67-0x0000000000400000-0x000000000044C000-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:

IMG_001.PDF .scr

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	IMG_001.PDF .scr
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	IMG_001.PDF .scr

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\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_001.PDF .scr

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	IMG_001.PDF .scr
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	IMG_001.PDF .scr

Suspicious use of SetThreadContext 1 IoCs

Processes:

IMG_001.PDF .scr

description pid process target process

PID 560 set thread context of 324 560 IMG_001.PDF .scr RegSvcs.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

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

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 324 RegSvcs.exe

description	pid	process	target process
PID 560 set thread context of 324	560	IMG_001.PDF .scr	RegSvcs.exe

pid	process
324	RegSvcs.exe
324	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	324	RegSvcs.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

IMG_001.PDF .scr

description	pid	process	target process
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe
PID 560 wrote to memory of 324	560	IMG_001.PDF .scr	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.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	RegSvcs.exe

outlook_win_path 1 IoCs

Processes:

RegSvcs.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	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\IMG_001.PDF .scr
"C:\Users\Admin\AppData\Local\Temp\IMG_001.PDF .scr" /S
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:560

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:324

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

2

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/324-57-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/324-58-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/324-60-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/324-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/324-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/324-63-0x0000000000447AAE-mapping.dmp

Download
memory/324-65-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/324-67-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/324-68-0x0000000075271000-0x0000000075273000-memory.dmp

Filesize
8KB

Download
memory/560-54-0x0000000001380000-0x000000000144E000-memory.dmp

Filesize
824KB

Download
memory/560-55-0x0000000000260000-0x000000000026A000-memory.dmp

Filesize
40KB

Download
memory/560-56-0x0000000000E40000-0x0000000000E94000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads