agenttesla | d44ab027fea1af8575d4e42667e1021bf1cfbf2e7a56b7cd7e26a605d5720b16

Analysis

max time kernel
128s
max time network
119s
platform
windows7_x64
resource
win7v20201028
submitted
07/02/2021, 16:05

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General

Target
Proforma Invoice.exe
Size 1.1MB
Sample210207-n9f4wth3te
SHA256 d44ab027fea1af8575d4e42667e1021bf1cfbf2e7a56b7cd7e26a605d5720b16
MD5 b29df9dc0c1d93a284e321e1f086043c
SHA1 e201dd312837af009624f6e6291f5b91ab59ae85
SHA512 3747feab42cc5a1ce46ddb767ea27d0ba7ca5c5519d6c73577173eeae6be7d5e43b572726b696c7be6271885d90025219b885859e981d2ed07d45ffca6030b07
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.idroconsulting.biz
Port
587
Username
[email protected]
Password
SSuavsk8

Signatures

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

AgentTesla Payload 3 IoCs

resource	yara_rule
behavioral1/memory/520-21-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/520-22-0x00000000004375BE-mapping.dmp	family_agenttesla
behavioral1/memory/520-26-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Executes dropped EXE 1 IoCs

pid	Process
520	InstallUtil.exe

Loads dropped DLL 1 IoCs

pid	Process
636	PDF.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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\icloud = "C:\\Users\\Admin\\AppData\\Roaming\\icloud\\icloud.exe"	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 636 set thread context of 520	636	PDF.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1152	Proforma Invoice.exe
636	PDF.exe
636	PDF.exe
520	InstallUtil.exe
520	InstallUtil.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1152	Proforma Invoice.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1152	Proforma Invoice.exe
Token: SeDebugPrivilege	636	PDF.exe
Token: SeDebugPrivilege	520	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
520	InstallUtil.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1152 wrote to memory of 636	1152	Proforma Invoice.exe	29
PID 1152 wrote to memory of 636	1152	Proforma Invoice.exe	29
PID 1152 wrote to memory of 636	1152	Proforma Invoice.exe	29
PID 1152 wrote to memory of 636	1152	Proforma Invoice.exe	29
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30
PID 636 wrote to memory of 520	636	PDF.exe	30

C:\Users\Admin\AppData\Local\Temp\Proforma Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Proforma Invoice.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1152
- C:\Users\Admin\AppData\Local\Temp\PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\PDF.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:636
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:520

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/520-21-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/520-29-0x00000000006A1000-0x00000000006A2000-memory.dmp

Download

memory/520-28-0x00000000006A0000-0x00000000006A1000-memory.dmp

Download

memory/520-26-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/520-25-0x0000000074360000-0x0000000074A4E000-memory.dmp

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memory/636-20-0x0000000004F91000-0x0000000004F92000-memory.dmp

Download

memory/636-18-0x0000000000B00000-0x0000000000B01000-memory.dmp

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memory/636-17-0x00000000009A0000-0x00000000009AB000-memory.dmp

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memory/636-13-0x0000000004F90000-0x0000000004F91000-memory.dmp

Download

memory/636-10-0x0000000074360000-0x0000000074A4E000-memory.dmp

Download

memory/1152-2-0x0000000074360000-0x0000000074A4E000-memory.dmp

Download

memory/1152-7-0x0000000004280000-0x000000000429E000-memory.dmp

Download

memory/1152-5-0x0000000004D30000-0x0000000004D31000-memory.dmp

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memory/1152-3-0x0000000000D30000-0x0000000000D31000-memory.dmp

Download

memory/1152-8-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

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