agenttesla | 4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5

General

Target

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
Size

713KB
MD5

a68f9e8fe3a6b2a073267af477c2bf31
SHA1

96a682c454cfb32ae2928801e89e67b043e47a4e
SHA256

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5
SHA512

4e283db9f2f7f013b34e37755005f8eea84153d74b3eed513a07fd97ac3bf11c805d4c34ecd68320defe194fde3fb19bd2ff7759659d75dc703bfc51645a60eb
SSDEEP

12288:dU9jA6JPQbRhkYvg86stzDpi4L3HIb66KWlyaiZAuW1md+:AbsPTL3HIb66rsUD

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.avtorska.com.mk
Port:
587
Username:
[email protected]
Password:
avtorska2014@

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.avtorska.com.mk
Port:
587
Username:
[email protected]
Password:
avtorska2014@
Email To:
[email protected]

Signatures

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

Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1836-14-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_EXE_Packed_GEN01

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1836-14-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1836-14-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1836-14-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1836-14-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1836-14-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1836-14-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\skype = "C:\\Users\\Admin\\AppData\\Roaming\\skype\\skype.exe"	RegAsm.exe

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

45 api.ipify.org
46 api.ipify.org
47 ip-api.com

flow	ioc
45	api.ipify.org
46	api.ipify.org
47	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

Processes:

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe

description	pid	process	target process
PID 536 set thread context of 1836	536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exeRegAsm.exe

pid	process
536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
1836	RegAsm.exe
1836	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exeRegAsm.exe

description	pid	process
Token: SeDebugPrivilege	536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
Token: SeDebugPrivilege	1836	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

1836 RegAsm.exe

pid	process
1836	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe

description	pid	process	target process
PID 536 wrote to memory of 1836	536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 536 wrote to memory of 1836	536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 536 wrote to memory of 1836	536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 536 wrote to memory of 1836	536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 536 wrote to memory of 1836	536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 536 wrote to memory of 1836	536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 536 wrote to memory of 1836	536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 536 wrote to memory of 1836	536	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
"C:\Users\Admin\AppData\Local\Temp\4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:536

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/536-10-0x0000000009BB0000-0x0000000009BB6000-memory.dmp

Filesize
24KB

Download
memory/536-3-0x00000000058D0000-0x0000000005962000-memory.dmp

Filesize
584KB

Download
memory/536-0-0x000000007501E000-0x000000007501F000-memory.dmp

Filesize
4KB

Download
memory/536-12-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/536-11-0x000000007501E000-0x000000007501F000-memory.dmp

Filesize
4KB

Download
memory/536-5-0x0000000005D00000-0x0000000005D44000-memory.dmp

Filesize
272KB

Download
memory/536-6-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/536-7-0x0000000005EC0000-0x0000000005ECA000-memory.dmp

Filesize
40KB

Download
memory/536-8-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/536-9-0x0000000007140000-0x000000000715A000-memory.dmp

Filesize
104KB

Download
memory/536-2-0x0000000005F50000-0x00000000064F4000-memory.dmp

Filesize
5.6MB

Download
memory/536-1-0x0000000000E70000-0x0000000000F28000-memory.dmp

Filesize
736KB

Download
memory/536-4-0x0000000005A40000-0x0000000005ADC000-memory.dmp

Filesize
624KB

Download
memory/536-13-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/536-16-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/1836-14-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1836-17-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/1836-18-0x00000000056A0000-0x0000000005706000-memory.dmp

Filesize
408KB

Download
memory/1836-19-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/1836-21-0x0000000006A30000-0x0000000006A80000-memory.dmp

Filesize
320KB

Download
memory/1836-22-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads