agenttesla | d9d81b7f2062604548db93c379ffecbe38d5b5010d365b6b1ddeb4f856e43527

General

Target

PO1037596.exe
Size

639KB
MD5

2d1c2e159be49acd9da60cd08bab1578
SHA1

9e5aa237b5b8a027c5a52d13db554437dbf603ce
SHA256

59fcfb7a5c799be9973a2b40bf72a62ec818aff1b2416c5ad7592db25306a176
SHA512

4b818ab516e8b07a13e8ed2db98bef7ca93ef21448df1e961a417eb8d872b1d5841440d56348ca90a36e9a60e12ce444bebf927f74358528e8b1915ea0f0494a
SSDEEP

12288:KTnd+S4B5jktylvtQbUdXe0et+7EeCCyVFkHCduv4Pr8+QUef12BVIM1Fk7uykR:3fjktI6JA77CCyPZdu+gf1bSFkg

Score

10^/10

agenttesla credential_access discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.bonnyriggdentalsurgery.com.au
Port:
587
Username:
[email protected]
Password:
eL)rV@QBKA#m
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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
2696	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 2 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

Looks up external IP address via web service 3 IoCs

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

flow	ioc
5	api.ipify.org
6	ip-api.com
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 264 set thread context of 2748	264	PO1037596.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	PO1037596.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO1037596.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2748	PO1037596.exe
2748	PO1037596.exe
2696	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2748	PO1037596.exe
Token: SeDebugPrivilege	2696	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 264 wrote to memory of 2696	264	PO1037596.exe	31
PID 264 wrote to memory of 2696	264	PO1037596.exe	31
PID 264 wrote to memory of 2696	264	PO1037596.exe	31
PID 264 wrote to memory of 2696	264	PO1037596.exe	31
PID 264 wrote to memory of 2748	264	PO1037596.exe	33
PID 264 wrote to memory of 2748	264	PO1037596.exe	33
PID 264 wrote to memory of 2748	264	PO1037596.exe	33
PID 264 wrote to memory of 2748	264	PO1037596.exe	33
PID 264 wrote to memory of 2748	264	PO1037596.exe	33
PID 264 wrote to memory of 2748	264	PO1037596.exe	33
PID 264 wrote to memory of 2748	264	PO1037596.exe	33
PID 264 wrote to memory of 2748	264	PO1037596.exe	33
PID 264 wrote to memory of 2748	264	PO1037596.exe	33

C:\Users\Admin\AppData\Local\Temp\PO1037596.exe
"C:\Users\Admin\AppData\Local\Temp\PO1037596.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:264
- 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\PO1037596.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2696
- C:\Users\Admin\AppData\Local\Temp\PO1037596.exe
  "C:\Users\Admin\AppData\Local\Temp\PO1037596.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2748

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/264-0-0x0000000074DAE000-0x0000000074DAF000-memory.dmp

Filesize
4KB

Download
memory/264-1-0x0000000000280000-0x0000000000322000-memory.dmp

Filesize
648KB

Download
memory/264-2-0x0000000074DA0000-0x000000007548E000-memory.dmp

Filesize
6.9MB

Download
memory/264-3-0x00000000045A0000-0x0000000004636000-memory.dmp

Filesize
600KB

Download
memory/264-4-0x0000000000220000-0x000000000022E000-memory.dmp

Filesize
56KB

Download
memory/264-5-0x0000000074DAE000-0x0000000074DAF000-memory.dmp

Filesize
4KB

Download
memory/264-6-0x0000000074DA0000-0x000000007548E000-memory.dmp

Filesize
6.9MB

Download
memory/264-7-0x00000000053A0000-0x0000000005424000-memory.dmp

Filesize
528KB

Download
memory/264-20-0x0000000074DA0000-0x000000007548E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-16-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2748-18-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2748-14-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2748-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2748-11-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2748-10-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2748-9-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2748-8-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2748-19-0x0000000074DA0000-0x000000007548E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-21-0x0000000074DA0000-0x000000007548E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-24-0x0000000074DA0000-0x000000007548E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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