agenttesla | e5b1e16daa002f8571e782628879b8a41b664f6430ce76edbf69f5a1b0f3ee0e

General

Target

iu5J6ktsl7y8tiM.exe
Size

790KB
MD5

6fc0480b81f7492fef68b69e3707c213
SHA1

956e53123b9650d62f38532fe65e7c72f1fced1d
SHA256

021b5417b02a080b620285e4bc35871a4c013c4fb46884574bad06b2b896394c
SHA512

7edfc8b39d60f3d898e8d876e2d591f6db6cd023242d427b14268b4908d3ac8cb16a85ab19aa1b06b3fd735636b5c2b8ee7a8c6fe6f3b7dbdbd848458e9c5ae6
SSDEEP

12288:SW6jz+yrT5G1wXJjMZMNX0Q+JiDi3yqepAhencOxeUc7N5F:V+z+yrTrlPUeFjAhff7Nf

Score

10^/10

agenttesla discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.apexrnun.com
Port:
587
Username:
[email protected]
Password:
dU*wU0)yR;?4q|-#
Email To:
[email protected]

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2912	powershell.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2248 set thread context of 2840	2248	iu5J6ktsl7y8tiM.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iu5J6ktsl7y8tiM.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iu5J6ktsl7y8tiM.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2248	iu5J6ktsl7y8tiM.exe
2248	iu5J6ktsl7y8tiM.exe
2248	iu5J6ktsl7y8tiM.exe
2248	iu5J6ktsl7y8tiM.exe
2840	iu5J6ktsl7y8tiM.exe
2840	iu5J6ktsl7y8tiM.exe
2912	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2248	iu5J6ktsl7y8tiM.exe
Token: SeDebugPrivilege	2840	iu5J6ktsl7y8tiM.exe
Token: SeDebugPrivilege	2912	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2912	2248	iu5J6ktsl7y8tiM.exe	29
PID 2248 wrote to memory of 2912	2248	iu5J6ktsl7y8tiM.exe	29
PID 2248 wrote to memory of 2912	2248	iu5J6ktsl7y8tiM.exe	29
PID 2248 wrote to memory of 2912	2248	iu5J6ktsl7y8tiM.exe	29
PID 2248 wrote to memory of 2788	2248	iu5J6ktsl7y8tiM.exe	31
PID 2248 wrote to memory of 2788	2248	iu5J6ktsl7y8tiM.exe	31
PID 2248 wrote to memory of 2788	2248	iu5J6ktsl7y8tiM.exe	31
PID 2248 wrote to memory of 2788	2248	iu5J6ktsl7y8tiM.exe	31
PID 2248 wrote to memory of 2760	2248	iu5J6ktsl7y8tiM.exe	32
PID 2248 wrote to memory of 2760	2248	iu5J6ktsl7y8tiM.exe	32
PID 2248 wrote to memory of 2760	2248	iu5J6ktsl7y8tiM.exe	32
PID 2248 wrote to memory of 2760	2248	iu5J6ktsl7y8tiM.exe	32
PID 2248 wrote to memory of 2840	2248	iu5J6ktsl7y8tiM.exe	33
PID 2248 wrote to memory of 2840	2248	iu5J6ktsl7y8tiM.exe	33
PID 2248 wrote to memory of 2840	2248	iu5J6ktsl7y8tiM.exe	33
PID 2248 wrote to memory of 2840	2248	iu5J6ktsl7y8tiM.exe	33
PID 2248 wrote to memory of 2840	2248	iu5J6ktsl7y8tiM.exe	33
PID 2248 wrote to memory of 2840	2248	iu5J6ktsl7y8tiM.exe	33
PID 2248 wrote to memory of 2840	2248	iu5J6ktsl7y8tiM.exe	33
PID 2248 wrote to memory of 2840	2248	iu5J6ktsl7y8tiM.exe	33
PID 2248 wrote to memory of 2840	2248	iu5J6ktsl7y8tiM.exe	33

C:\Users\Admin\AppData\Local\Temp\iu5J6ktsl7y8tiM.exe
"C:\Users\Admin\AppData\Local\Temp\iu5J6ktsl7y8tiM.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\iu5J6ktsl7y8tiM.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2912
- C:\Users\Admin\AppData\Local\Temp\iu5J6ktsl7y8tiM.exe
  "C:\Users\Admin\AppData\Local\Temp\iu5J6ktsl7y8tiM.exe"
  2⤵
  PID:2788
- C:\Users\Admin\AppData\Local\Temp\iu5J6ktsl7y8tiM.exe
  "C:\Users\Admin\AppData\Local\Temp\iu5J6ktsl7y8tiM.exe"
  2⤵
  PID:2760
- C:\Users\Admin\AppData\Local\Temp\iu5J6ktsl7y8tiM.exe
  "C:\Users\Admin\AppData\Local\Temp\iu5J6ktsl7y8tiM.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2248-0-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/2248-1-0x00000000002B0000-0x000000000037C000-memory.dmp

Filesize
816KB

Download
memory/2248-2-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2248-3-0x0000000000380000-0x000000000039E000-memory.dmp

Filesize
120KB

Download
memory/2248-4-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/2248-5-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2248-6-0x00000000059E0000-0x0000000005A64000-memory.dmp

Filesize
528KB

Download
memory/2248-19-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2840-13-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2840-17-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2840-15-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2840-18-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2840-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2840-10-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2840-9-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2840-8-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2840-7-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2840-22-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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