agenttesla | 7c14fa2d1628f2687fd8ec0f5ba6e58d068c78519b1d6b56a8643b72217f35e0

General

Target

DOCUMENTS.exe
Size

664KB
MD5

86c32660eae56874038d23816e4aeb25
SHA1

9d33de36dbf70639cf0de14b9e70267897471500
SHA256

ab6c643159c159af03c43e99e1ee15747f4c72de44e47b1ba6675d8160f5aa6e
SHA512

0014c6d3d2e3b1ebf20457dfd60a8fd9420a6f8d7811d1c07714c09edf20aaaab13ce7f742f977d17ab7724cc01ed130561501219f10b730e4ad6ac7d1b35387

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/4008-138-0x0000000000400000-0x000000000044C000-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:

DOCUMENTS.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	DOCUMENTS.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CJzRAE = "C:\\Users\\Admin\\AppData\\Roaming\\CJzRAE\\CJzRAE.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

DOCUMENTS.exe

description pid process target process

PID 3404 set thread context of 4008 3404 DOCUMENTS.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

3936 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

DOCUMENTS.exeRegSvcs.exe

pid process

3404 DOCUMENTS.exe
3404 DOCUMENTS.exe
3404 DOCUMENTS.exe
3404 DOCUMENTS.exe
4008 RegSvcs.exe
4008 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DOCUMENTS.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 3404 DOCUMENTS.exe
Token: SeDebugPrivilege 4008 RegSvcs.exe

description	pid	process	target process
PID 3404 set thread context of 4008	3404	DOCUMENTS.exe	RegSvcs.exe

pid	process
3936	schtasks.exe

pid	process
3404	DOCUMENTS.exe
3404	DOCUMENTS.exe
3404	DOCUMENTS.exe
3404	DOCUMENTS.exe
4008	RegSvcs.exe
4008	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	3404	DOCUMENTS.exe
Token: SeDebugPrivilege	4008	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

DOCUMENTS.exe

description	pid	process	target process
PID 3404 wrote to memory of 3936	3404	DOCUMENTS.exe	schtasks.exe
PID 3404 wrote to memory of 3936	3404	DOCUMENTS.exe	schtasks.exe
PID 3404 wrote to memory of 3936	3404	DOCUMENTS.exe	schtasks.exe
PID 3404 wrote to memory of 4008	3404	DOCUMENTS.exe	RegSvcs.exe
PID 3404 wrote to memory of 4008	3404	DOCUMENTS.exe	RegSvcs.exe
PID 3404 wrote to memory of 4008	3404	DOCUMENTS.exe	RegSvcs.exe
PID 3404 wrote to memory of 4008	3404	DOCUMENTS.exe	RegSvcs.exe
PID 3404 wrote to memory of 4008	3404	DOCUMENTS.exe	RegSvcs.exe
PID 3404 wrote to memory of 4008	3404	DOCUMENTS.exe	RegSvcs.exe
PID 3404 wrote to memory of 4008	3404	DOCUMENTS.exe	RegSvcs.exe
PID 3404 wrote to memory of 4008	3404	DOCUMENTS.exe	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\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-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
"C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3404

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp977D.tmp"
2⤵
- Creates scheduled task(s)
PID:3936

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:4008

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Bypass User Account Control

1

T1088

Scheduled Task

1

T1053

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

1

T1089

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp977D.tmp
Filesize
1KB

MD5
f0194d140d5655b77acfe5c633086ba1

SHA1
8cd43646855f664a0ebcff81adb01c0681a9363e

SHA256
31fb428c38ed87cd3c15ca9020c0dd95120ff487e25a9886be7acf1c7c9c5e46

SHA512
abf16211ad68556400043b1a50b9753bbcdb25e433a1c7bc982afcd3c9bfa48207f063f90130d1f5fe1eb8c335ef06159d9fe740cff7f9e0cb6bca6d8e422a14

Download Submit
memory/3404-130-0x0000000000420000-0x00000000004CA000-memory.dmp

Filesize
680KB

Download
memory/3404-131-0x0000000005530000-0x0000000005AD4000-memory.dmp

Filesize
5.6MB

Download
memory/3404-132-0x0000000004E90000-0x0000000004F22000-memory.dmp

Filesize
584KB

Download
memory/3404-133-0x0000000004E70000-0x0000000004E7A000-memory.dmp

Filesize
40KB

Download
memory/3404-134-0x0000000008690000-0x000000000872C000-memory.dmp

Filesize
624KB

Download
memory/3936-135-0x0000000000000000-mapping.dmp

Download
memory/4008-137-0x0000000000000000-mapping.dmp

Download
memory/4008-138-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4008-139-0x00000000055C0000-0x0000000005626000-memory.dmp

Filesize
408KB

Download
memory/4008-140-0x00000000062D0000-0x0000000006320000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads