agenttesla | 1489521207b240fd4462b9937f2590bb2c4a61d228b246fb80e84e6196758a2d

General

Target

DOC.exe
Size

421KB
MD5

1a686ae23aa093aaa8df66976f9c5a80
SHA1

f4d09430ff28c32189a81ffb97dfcb5501ab5cbb
SHA256

09d29a5604548a4d0fafd678d658d78ca9cd38121159b4abc55fed249bc08c06
SHA512

e1ce657e3988ab09e27518749c303652f0307499421bd6b09b6bc4a0fd9c5b1ce19baebbaa7bf43259cc48ee6a52b5d4baaa72b20e130e85b68bde81933d23d3

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.mytecheng.com
Port:
587
Username:
services@mytecheng.com
Password:
Pakistan@321

Signatures

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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2032-65-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2032-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2032-67-0x000000000044734E-mapping.dmp	family_agenttesla
behavioral1/memory/2032-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2032-69-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2032-71-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

DOC.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts DOC.exe
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
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 stealer

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 stealer

Data from Local System
T1005

Credentials in Files
T1081

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	DOC.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

DOC.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOC.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOC.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOC.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

DOC.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	DOC.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

DOC.exe

description pid process target process

PID 288 set thread context of 2032 288 DOC.exe DOC.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1704 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

2040 REG.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

DOC.exeDOC.exe

pid process

288 DOC.exe
288 DOC.exe
2032 DOC.exe
2032 DOC.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DOC.exeDOC.exe

description pid process

Token: SeDebugPrivilege 288 DOC.exe
Token: SeDebugPrivilege 2032 DOC.exe

description	pid	process	target process
PID 288 set thread context of 2032	288	DOC.exe	DOC.exe

pid	process
1704	schtasks.exe

pid	process
2040	REG.exe

pid	process
288	DOC.exe
288	DOC.exe
2032	DOC.exe
2032	DOC.exe

description	pid	process
Token: SeDebugPrivilege	288	DOC.exe
Token: SeDebugPrivilege	2032	DOC.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

DOC.exeDOC.exe

description	pid	process	target process
PID 288 wrote to memory of 1704	288	DOC.exe	schtasks.exe
PID 288 wrote to memory of 1704	288	DOC.exe	schtasks.exe
PID 288 wrote to memory of 1704	288	DOC.exe	schtasks.exe
PID 288 wrote to memory of 1704	288	DOC.exe	schtasks.exe
PID 288 wrote to memory of 1188	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 1188	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 1188	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 1188	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 2032	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 2032	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 2032	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 2032	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 2032	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 2032	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 2032	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 2032	288	DOC.exe	DOC.exe
PID 288 wrote to memory of 2032	288	DOC.exe	DOC.exe
PID 2032 wrote to memory of 2040	2032	DOC.exe	REG.exe
PID 2032 wrote to memory of 2040	2032	DOC.exe	REG.exe
PID 2032 wrote to memory of 2040	2032	DOC.exe	REG.exe
PID 2032 wrote to memory of 2040	2032	DOC.exe	REG.exe

outlook_office_path 1 IoCs

Processes:

DOC.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOC.exe

outlook_win_path 1 IoCs

Processes:

DOC.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOC.exe

C:\Users\Admin\AppData\Local\Temp\DOC.exe
"C:\Users\Admin\AppData\Local\Temp\DOC.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:288

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iKJVfcE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1E4B.tmp"
2⤵
- Creates scheduled task(s)
PID:1704

C:\Users\Admin\AppData\Local\Temp\DOC.exe
"{path}"
2⤵
PID:1188

C:\Users\Admin\AppData\Local\Temp\DOC.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2032

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
3⤵
- Modifies registry key
PID:2040

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1E4B.tmp
Filesize
1KB

MD5
4b56ee96b191812649e3bb62b2a6b29e

SHA1
bf05224d893ebfb9d09e5607845f7a30c7ed75d8

SHA256
0fa30b0da8f6ad08d9c34be5a1ed5db98e962fe3f4ed53431ed09bd4b965359f

SHA512
dd0190466a102af394950c60498aaaccd0e297d560ed5fb8d0415031e6f9dc45759703514abd2464a38f011ed01715f5fd937d895ad9228bad4318b3582aea8f

Download Submit
memory/288-54-0x0000000000CF0000-0x0000000000D60000-memory.dmp

Filesize
448KB

Download
memory/288-55-0x00000000755A1000-0x00000000755A3000-memory.dmp

Filesize
8KB

Download
memory/288-56-0x00000000004B0000-0x00000000004B8000-memory.dmp

Filesize
32KB

Download
memory/288-57-0x0000000000C40000-0x0000000000C98000-memory.dmp

Filesize
352KB

Download
memory/1704-58-0x0000000000000000-mapping.dmp

Download
memory/2032-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2032-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2032-65-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2032-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2032-67-0x000000000044734E-mapping.dmp

Download
memory/2032-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2032-69-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2032-71-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2040-73-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads