agenttesla | 3c1435bed4783276e6cb146e1e99b752f59b93be1320547419f19a02603feaca

General

Target

Case file.exe
Size

717KB
MD5

8b96b92d092045906f8be7738d94f92b
SHA1

7be7cd3e09a959575cacddf97c96e4f731dddc50
SHA256

3c1435bed4783276e6cb146e1e99b752f59b93be1320547419f19a02603feaca
SHA512

7b12f092885481c3c9b28dc481c9befc457adb11fb83dd18c200d6510fae1a71eea96f1d67c0efde3c6eb6f74a80989642c0f53bdb8ef80429ffc2dd1bab2970

Score

10^/10

spyware keylogger trojan stealer agenttesla persistence

Malware Config

Signatures

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
240	Case file.exe
1832	Case file.exe
1832	Case file.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 240 wrote to memory of 1816	240	Case file.exe	26
PID 240 wrote to memory of 1816	240	Case file.exe	26
PID 240 wrote to memory of 1816	240	Case file.exe	26
PID 240 wrote to memory of 1816	240	Case file.exe	26
PID 240 wrote to memory of 1816	240	Case file.exe	26
PID 240 wrote to memory of 1816	240	Case file.exe	26
PID 240 wrote to memory of 1832	240	Case file.exe	27
PID 240 wrote to memory of 1832	240	Case file.exe	27
PID 240 wrote to memory of 1832	240	Case file.exe	27
PID 240 wrote to memory of 1832	240	Case file.exe	27

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 240 set thread context of 1832	240	Case file.exe	27

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1832	Case file.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

resource	yara_rule
behavioral1/memory/1832-2-0x0000000000400000-0x00000000004B0000-memory.dmp	upx
behavioral1/memory/1832-4-0x0000000000400000-0x00000000004B0000-memory.dmp	upx
behavioral1/memory/1832-5-0x0000000000400000-0x00000000004B0000-memory.dmp	upx

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

Adds Run entry 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-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mymp4 = "C:\\Users\\Admin\\AppData\\Roaming\\Mymp4\\Mymp4.exe"	Case file.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
240	Case file.exe

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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pv.vbs	notepad.exe

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

C:\Users\Admin\AppData\Local\Temp\Case file.exe
"C:\Users\Admin\AppData\Local\Temp\Case file.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
PID:240
- C:\Windows\SysWOW64\notepad.exe
  "C:\Windows\system32\notepad.exe"
  2⤵
  - Drops startup file
  PID:1816
- C:\Users\Admin\AppData\Local\Temp\Case file.exe
  "C:\Users\Admin\AppData\Local\Temp\Case file.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Adds Run entry to start application
  PID:1832

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1816-1-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1832-2-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1832-4-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1832-5-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1832-6-0x00000000004B0000-0x0000000000502000-memory.dmp

Filesize
328KB

Download
memory/1832-7-0x00000000002C2000-0x00000000002C3000-memory.dmp

Filesize
4KB

Download
memory/1832-8-0x0000000000220000-0x000000000026B000-memory.dmp

Filesize
300KB

Download

Analysis

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