agenttesla | 46dc49be65d7165e2a6009854a4f27f0088230199e61e0555cb1bd266535874a

Analysis

max time kernel
148s
max time network
28s
platform
windows7_x64
resource
win7v200722
submitted
11-08-2020 12:30

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General

Target

foo/406c9b9529109f835fe7292e6cf3fefe.exe

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

Processes:

svhost.exe

pid	Process
1440	svhost.exe

Loads dropped DLL 1 IoCs

Processes:

406c9b9529109f835fe7292e6cf3fefe.exe

pid	Process
1416	406c9b9529109f835fe7292e6cf3fefe.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081
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

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svhost.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\MyOtApp = "C:\\Users\\Admin\\AppData\\Roaming\\MyOtApp\\MyOtApp.exe"	svhost.exe

Looks up external IP address via web service 1 IoCs

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

Processes:

flow	ioc
4	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

406c9b9529109f835fe7292e6cf3fefe.exe

description	pid	Process	procid_target
PID 1416 set thread context of 1440	1416	406c9b9529109f835fe7292e6cf3fefe.exe	24

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

406c9b9529109f835fe7292e6cf3fefe.exesvhost.exe

pid	Process
1416	406c9b9529109f835fe7292e6cf3fefe.exe
1440	svhost.exe
1440	svhost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

406c9b9529109f835fe7292e6cf3fefe.exesvhost.exe

description	pid	Process
Token: SeDebugPrivilege	1416	406c9b9529109f835fe7292e6cf3fefe.exe
Token: SeDebugPrivilege	1440	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svhost.exe

pid	Process
1440	svhost.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

406c9b9529109f835fe7292e6cf3fefe.exe

description	pid	Process	procid_target
PID 1416 wrote to memory of 1440	1416	406c9b9529109f835fe7292e6cf3fefe.exe	24
PID 1416 wrote to memory of 1440	1416	406c9b9529109f835fe7292e6cf3fefe.exe	24
PID 1416 wrote to memory of 1440	1416	406c9b9529109f835fe7292e6cf3fefe.exe	24
PID 1416 wrote to memory of 1440	1416	406c9b9529109f835fe7292e6cf3fefe.exe	24
PID 1416 wrote to memory of 1440	1416	406c9b9529109f835fe7292e6cf3fefe.exe	24
PID 1416 wrote to memory of 1440	1416	406c9b9529109f835fe7292e6cf3fefe.exe	24
PID 1416 wrote to memory of 1440	1416	406c9b9529109f835fe7292e6cf3fefe.exe	24
PID 1416 wrote to memory of 1440	1416	406c9b9529109f835fe7292e6cf3fefe.exe	24
PID 1416 wrote to memory of 1440	1416	406c9b9529109f835fe7292e6cf3fefe.exe	24

C:\Users\Admin\AppData\Local\Temp\foo\406c9b9529109f835fe7292e6cf3fefe.exe
"C:\Users\Admin\AppData\Local\Temp\foo\406c9b9529109f835fe7292e6cf3fefe.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1416
- C:\Users\Admin\AppData\Local\Temp\svhost.exe
  "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1440

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\svhost.exe

MD5
2e5f1cf69f92392f8829fc9c9263ae9b

SHA1
97b9ca766bbbdaa8c9ec960dc41b598f7fad82a5

SHA256
51985a57e085d8b17042f0cdc1f905380b792854733eb3275fd8fce4e3bb886b

SHA512
f7e096dd9d0fa3a3c04c01bf229c4b344798a4c8b7b848588c1d78cb9fadfa9b1d0fd53c1fe74d191d5561e9eb551a4a3fc918363f119ea60024dd3d67c83883

Download Submit
C:\Users\Admin\AppData\Local\Temp\svhost.exe

MD5
2e5f1cf69f92392f8829fc9c9263ae9b

SHA1
97b9ca766bbbdaa8c9ec960dc41b598f7fad82a5

SHA256
51985a57e085d8b17042f0cdc1f905380b792854733eb3275fd8fce4e3bb886b

SHA512
f7e096dd9d0fa3a3c04c01bf229c4b344798a4c8b7b848588c1d78cb9fadfa9b1d0fd53c1fe74d191d5561e9eb551a4a3fc918363f119ea60024dd3d67c83883

Download Submit
\Users\Admin\AppData\Local\Temp\svhost.exe

MD5
2e5f1cf69f92392f8829fc9c9263ae9b

SHA1
97b9ca766bbbdaa8c9ec960dc41b598f7fad82a5

SHA256
51985a57e085d8b17042f0cdc1f905380b792854733eb3275fd8fce4e3bb886b

SHA512
f7e096dd9d0fa3a3c04c01bf229c4b344798a4c8b7b848588c1d78cb9fadfa9b1d0fd53c1fe74d191d5561e9eb551a4a3fc918363f119ea60024dd3d67c83883

Download Submit
memory/1440-1-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/1440-2-0x000000000043179E-mapping.dmp

Download
memory/1440-4-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/1440-5-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/1556-8-0x000007FEF6CD0000-0x000007FEF6F4A000-memory.dmp

Filesize
2.5MB

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