agenttesla | b814060c8975a9b3c28ac4f26232a53569bfb40f977d9c66ce93d8965c2fdcbf

General

Target

Quotation Reques.exe
Size

636KB
MD5

c2dbd23d7d1429c00ac1054a2befb929
SHA1

20c144e6919f64dad5cff37b29da1030d5044300
SHA256

ca00e2766617e6a0d743880ad74f65b035e04192914a938a6610f6fd813c6c0c
SHA512

207753698017d2761d4b1e782d8b27fda43c71fe077989f9343c773a1ddbd49bd92a2dc57fc30d30c89e017db0b3be3de614b656137069198034aba43ee0949c

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.el-sever.com
Port:
587
Username:
[email protected]
Password:
admin123

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3436-137-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

RegSvcs.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Quotation Reques.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Quotation Reques.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CJzRAE = "C:\\Users\\Admin\\AppData\\Roaming\\CJzRAE\\CJzRAE.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Quotation Reques.exe

description pid process target process

PID 1320 set thread context of 3436 1320 Quotation Reques.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

3736 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

3436 RegSvcs.exe
3436 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 3436 RegSvcs.exe

description	pid	process	target process
PID 1320 set thread context of 3436	1320	Quotation Reques.exe	RegSvcs.exe

pid	process
3736	schtasks.exe

pid	process
3436	RegSvcs.exe
3436	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	3436	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Quotation Reques.exe

description	pid	process	target process
PID 1320 wrote to memory of 3736	1320	Quotation Reques.exe	schtasks.exe
PID 1320 wrote to memory of 3736	1320	Quotation Reques.exe	schtasks.exe
PID 1320 wrote to memory of 3736	1320	Quotation Reques.exe	schtasks.exe
PID 1320 wrote to memory of 3436	1320	Quotation Reques.exe	RegSvcs.exe
PID 1320 wrote to memory of 3436	1320	Quotation Reques.exe	RegSvcs.exe
PID 1320 wrote to memory of 3436	1320	Quotation Reques.exe	RegSvcs.exe
PID 1320 wrote to memory of 3436	1320	Quotation Reques.exe	RegSvcs.exe
PID 1320 wrote to memory of 3436	1320	Quotation Reques.exe	RegSvcs.exe
PID 1320 wrote to memory of 3436	1320	Quotation Reques.exe	RegSvcs.exe
PID 1320 wrote to memory of 3436	1320	Quotation Reques.exe	RegSvcs.exe
PID 1320 wrote to memory of 3436	1320	Quotation Reques.exe	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\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-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Quotation Reques.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation Reques.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1320

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gQfXCdarKBRY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp560F.tmp"
2⤵
- Creates scheduled task(s)
PID:3736

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3436

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Bypass User Account Control

Scheduled Task

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp560F.tmp
Filesize
1KB

MD5
e4c4a88c7685d56539dd5323cd2fce01

SHA1
f14078fcda1d4b5af20bbd9a5344970d5e042875

SHA256
b419c5693f4aa3043ae8b08f171cb88ca29960335f3a0cb2510fa7a4a41824b8

SHA512
7ca6dfe6080752236dfa342d5dd7b95ce4ed2b3ae902f764b307e6c94289e177841109b18546251cc3541f702a700008ec1eb96631dc0aa9ec2b252c578bd673

Download Submit
memory/1320-130-0x0000000000580000-0x0000000000624000-memory.dmp

Filesize
656KB

Download
memory/1320-131-0x0000000005510000-0x0000000005AB4000-memory.dmp

Filesize
5.6MB

Download
memory/1320-132-0x0000000005000000-0x0000000005092000-memory.dmp

Filesize
584KB

Download
memory/1320-133-0x00000000050A0000-0x000000000513C000-memory.dmp

Filesize
624KB

Download
memory/3436-136-0x0000000000000000-mapping.dmp

Download
memory/3436-137-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3436-138-0x0000000005EE0000-0x0000000005F46000-memory.dmp

Filesize
408KB

Download
memory/3436-139-0x00000000064D0000-0x0000000006520000-memory.dmp

Filesize
320KB

Download
memory/3436-140-0x00000000065D0000-0x00000000065DA000-memory.dmp

Filesize
40KB

Download
memory/3736-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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