agenttesla | 991a9408b15bec9a534018b66b5f6df88378ce97978e126eefb1ac4838a360cd

General

Target

Bank Account details.exe
Size

756KB
MD5

64231b9e4dae263a4b0d5c46afe46bc1
SHA1

4c62c7ede992517a58daafe35367cb1c2f8b74e1
SHA256

4363d2320266f58ce9011c5ed32b16429156d92762ed01843f57eb02bd71aa22
SHA512

9661a56a97696eefb2ef1d2157b07eb144c443083f1743e13f4595fdc7749071d89feda8933d265faac04c920911321d4d75084f8841757bd9e273a68b433548

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.tejoofashions.com
Port:
587
Username:
[email protected]
Password:
OmiCron#2019

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/5084-138-0x0000000000400000-0x000000000045A000-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:

Bank Account details.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	Bank Account details.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\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-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\jIxVtUg = "C:\\Users\\Admin\\AppData\\Roaming\\jIxVtUg\\jIxVtUg.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Bank Account details.exe

description pid process target process

PID 1928 set thread context of 5084 1928 Bank Account details.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

3988 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1460 REG.exe

description	pid	process	target process
PID 1928 set thread context of 5084	1928	Bank Account details.exe	RegSvcs.exe

pid	process
3988	schtasks.exe

pid	process
1460	REG.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Bank Account details.exeRegSvcs.exe

pid	process
1928	Bank Account details.exe
1928	Bank Account details.exe
1928	Bank Account details.exe
1928	Bank Account details.exe
5084	RegSvcs.exe
5084	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Bank Account details.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1928 Bank Account details.exe
Token: SeDebugPrivilege 5084 RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1928	Bank Account details.exe
Token: SeDebugPrivilege	5084	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Bank Account details.exeRegSvcs.exe

description	pid	process	target process
PID 1928 wrote to memory of 3988	1928	Bank Account details.exe	schtasks.exe
PID 1928 wrote to memory of 3988	1928	Bank Account details.exe	schtasks.exe
PID 1928 wrote to memory of 3988	1928	Bank Account details.exe	schtasks.exe
PID 1928 wrote to memory of 5084	1928	Bank Account details.exe	RegSvcs.exe
PID 1928 wrote to memory of 5084	1928	Bank Account details.exe	RegSvcs.exe
PID 1928 wrote to memory of 5084	1928	Bank Account details.exe	RegSvcs.exe
PID 1928 wrote to memory of 5084	1928	Bank Account details.exe	RegSvcs.exe
PID 1928 wrote to memory of 5084	1928	Bank Account details.exe	RegSvcs.exe
PID 1928 wrote to memory of 5084	1928	Bank Account details.exe	RegSvcs.exe
PID 1928 wrote to memory of 5084	1928	Bank Account details.exe	RegSvcs.exe
PID 1928 wrote to memory of 5084	1928	Bank Account details.exe	RegSvcs.exe
PID 5084 wrote to memory of 1460	5084	RegSvcs.exe	REG.exe
PID 5084 wrote to memory of 1460	5084	RegSvcs.exe	REG.exe
PID 5084 wrote to memory of 1460	5084	RegSvcs.exe	REG.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\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-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Bank Account details.exe
"C:\Users\Admin\AppData\Local\Temp\Bank Account details.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1928

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ILqQmJhBv" /XML "C:\Users\Admin\AppData\Local\Temp\tmp15A6.tmp"
2⤵
- Creates scheduled task(s)
PID:3988

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:5084

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:1460

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

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

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp15A6.tmp
Filesize
1KB

MD5
4efc387aea4c46fc0e85e8c26ba18f3d

SHA1
0b297679f137865a21605265bbfb275c37961870

SHA256
32d11abc368e825f55b3bb557e290160bd04978f9609085a221f75fbf5a137c6

SHA512
38a890cbcbf1afbcb8b1dfeb604db902de49ccdaa086bc5a67b35252b314923d0f12ad68cd570f617c6a0b537dbcd335b6aa1ac9fdfc2f74d84c3b863cf2933e

Download Submit
memory/1460-141-0x0000000000000000-mapping.dmp

Download
memory/1928-130-0x0000000000FF0000-0x00000000010B2000-memory.dmp

Filesize
776KB

Download
memory/1928-131-0x0000000006180000-0x0000000006724000-memory.dmp

Filesize
5.6MB

Download
memory/1928-132-0x0000000005AB0000-0x0000000005B42000-memory.dmp

Filesize
584KB

Download
memory/1928-133-0x0000000005A50000-0x0000000005A5A000-memory.dmp

Filesize
40KB

Download
memory/1928-134-0x0000000008040000-0x00000000080DC000-memory.dmp

Filesize
624KB

Download
memory/3988-135-0x0000000000000000-mapping.dmp

Download
memory/5084-137-0x0000000000000000-mapping.dmp

Download
memory/5084-138-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/5084-139-0x0000000005FF0000-0x0000000006056000-memory.dmp

Filesize
408KB

Download
memory/5084-140-0x0000000006BE0000-0x0000000006C30000-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