agenttesla | 3e9cbc4216bc44f59138e146415578bdd2af80c3f9dbb198b521cbf6e5ecd656

General

Target

DOC PDF.exe
Size

687KB
MD5

95cbcdfe7d89c89c759303a0e845d8b1
SHA1

3950ee91663e1142e889208c474ebc7d36995d5c
SHA256

f82fcb01f1334b2885bc090c3bc8bc587f64919b9739e95ffe12c9e5d5bc11cd
SHA512

c00438306fe5bfae406db98ea71779745ebbe4643c2993fb12a47a13dca2de5c71ec40a81cbf8d9e7ad3901b6921ef9e46d7bd01d597c89df6a494ed20493e31

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.palcoman.com
Port:
587
Username:
[email protected]
Password:
GgwWVBJ5

Signatures

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4224-138-0x0000000000400000-0x000000000044C000-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
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:

DOC PDF.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation DOC PDF.exe

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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	DOC 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-1-5-21-2632097139-1792035885-811742494-1000\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\gKWBf = "C:\\Users\\Admin\\AppData\\Roaming\\gKWBf\\gKWBf.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

DOC PDF.exe

description pid process target process

PID 2940 set thread context of 4224 2940 DOC 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

220 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

4040 REG.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

DOC PDF.exeRegSvcs.exe

pid process

2940 DOC PDF.exe
2940 DOC PDF.exe
2940 DOC PDF.exe
2940 DOC PDF.exe
4224 RegSvcs.exe
4224 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DOC PDF.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 2940 DOC PDF.exe
Token: SeDebugPrivilege 4224 RegSvcs.exe

description	pid	process	target process
PID 2940 set thread context of 4224	2940	DOC PDF.exe	RegSvcs.exe

pid	process
220	schtasks.exe

pid	process
4040	REG.exe

pid	process
2940	DOC PDF.exe
2940	DOC PDF.exe
2940	DOC PDF.exe
2940	DOC PDF.exe
4224	RegSvcs.exe
4224	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	2940	DOC PDF.exe
Token: SeDebugPrivilege	4224	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

DOC PDF.exeRegSvcs.exe

description	pid	process	target process
PID 2940 wrote to memory of 220	2940	DOC PDF.exe	schtasks.exe
PID 2940 wrote to memory of 220	2940	DOC PDF.exe	schtasks.exe
PID 2940 wrote to memory of 220	2940	DOC PDF.exe	schtasks.exe
PID 2940 wrote to memory of 4224	2940	DOC PDF.exe	RegSvcs.exe
PID 2940 wrote to memory of 4224	2940	DOC PDF.exe	RegSvcs.exe
PID 2940 wrote to memory of 4224	2940	DOC PDF.exe	RegSvcs.exe
PID 2940 wrote to memory of 4224	2940	DOC PDF.exe	RegSvcs.exe
PID 2940 wrote to memory of 4224	2940	DOC PDF.exe	RegSvcs.exe
PID 2940 wrote to memory of 4224	2940	DOC PDF.exe	RegSvcs.exe
PID 2940 wrote to memory of 4224	2940	DOC PDF.exe	RegSvcs.exe
PID 2940 wrote to memory of 4224	2940	DOC PDF.exe	RegSvcs.exe
PID 4224 wrote to memory of 4040	4224	RegSvcs.exe	REG.exe
PID 4224 wrote to memory of 4040	4224	RegSvcs.exe	REG.exe
PID 4224 wrote to memory of 4040	4224	RegSvcs.exe	REG.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\DOC PDF.exe
"C:\Users\Admin\AppData\Local\Temp\DOC PDF.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2940

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AfRYffCadnbirk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3B92.tmp"
2⤵
- Creates scheduled task(s)
PID:220

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
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:4224

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
3⤵
- Modifies registry key
PID:4040

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3B92.tmp
Filesize
1KB

MD5
d4ed5b541fa6f461d950e23cf1921c7f

SHA1
5dddb448bf6ee1b5d6afa93f9749a17027da3627

SHA256
5d87e455ac688baa023dd5549d9d1a43814f5a1dd44a050a8e386bff58cab58d

SHA512
09e76e765278be7ef650c2624340c6554f93454d39afb7e0fffd2947702193392c9da87f45cc53cacf336e661ddacf7dcab7b173606bf474b4916c291b5555c6

Download Submit
memory/220-135-0x0000000000000000-mapping.dmp

Download
memory/2940-130-0x0000000000B90000-0x0000000000C42000-memory.dmp

Filesize
712KB

Download
memory/2940-131-0x0000000005C20000-0x00000000061C4000-memory.dmp

Filesize
5.6MB

Download
memory/2940-132-0x0000000005670000-0x0000000005702000-memory.dmp

Filesize
584KB

Download
memory/2940-133-0x00000000055E0000-0x00000000055EA000-memory.dmp

Filesize
40KB

Download
memory/2940-134-0x00000000082E0000-0x000000000837C000-memory.dmp

Filesize
624KB

Download
memory/4040-141-0x0000000000000000-mapping.dmp

Download
memory/4224-137-0x0000000000000000-mapping.dmp

Download
memory/4224-138-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4224-139-0x0000000005710000-0x0000000005776000-memory.dmp

Filesize
408KB

Download
memory/4224-140-0x00000000067B0000-0x0000000006800000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads