agenttesla | 656e2f3fc777bedb947f7b6c5c2a54875e4f59274b60cc8df40a6b780d42dd97

General

Target

Ref PO-11059021022021.exe
Size

822KB
MD5

3508d774e8df045ef0439c29e48169e9
SHA1

52914ca4c253dca00fb9cba081c8ffde1bf6f8c5
SHA256

df57cc0b28f8d1219fd566db53271af52086fbee8b3493d42c93b82428f2fb8d
SHA512

0eaf8f044fb670f922559ebb3a8412dddc4670268f15949a09d5cc3017e91320c4ed988d6452711b2a92c2fdd6eba8c3bb4af09a8d7c490a3c01b637151b3995

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.a-k.co.ir
Port:
587
Username:
[email protected]
Password:
09133434194

Signatures

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2136-138-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

RegSvcs.exe

description ioc process

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

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Ref PO-11059021022021.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Ref PO-11059021022021.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\jIxVtUg = "C:\\Users\\Admin\\AppData\\Roaming\\jIxVtUg\\jIxVtUg.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Ref PO-11059021022021.exe

description pid process target process

PID 1324 set thread context of 2136 1324 Ref PO-11059021022021.exe RegSvcs.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

4280 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1416 REG.exe

description	pid	process	target process
PID 1324 set thread context of 2136	1324	Ref PO-11059021022021.exe	RegSvcs.exe

pid	process
4280	schtasks.exe

pid	process
1416	REG.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

Ref PO-11059021022021.exeRegSvcs.exe

pid	process
1324	Ref PO-11059021022021.exe
1324	Ref PO-11059021022021.exe
1324	Ref PO-11059021022021.exe
1324	Ref PO-11059021022021.exe
1324	Ref PO-11059021022021.exe
1324	Ref PO-11059021022021.exe
1324	Ref PO-11059021022021.exe
2136	RegSvcs.exe
2136	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Ref PO-11059021022021.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1324 Ref PO-11059021022021.exe
Token: SeDebugPrivilege 2136 RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1324	Ref PO-11059021022021.exe
Token: SeDebugPrivilege	2136	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Ref PO-11059021022021.exeRegSvcs.exe

description	pid	process	target process
PID 1324 wrote to memory of 4280	1324	Ref PO-11059021022021.exe	schtasks.exe
PID 1324 wrote to memory of 4280	1324	Ref PO-11059021022021.exe	schtasks.exe
PID 1324 wrote to memory of 4280	1324	Ref PO-11059021022021.exe	schtasks.exe
PID 1324 wrote to memory of 2136	1324	Ref PO-11059021022021.exe	RegSvcs.exe
PID 1324 wrote to memory of 2136	1324	Ref PO-11059021022021.exe	RegSvcs.exe
PID 1324 wrote to memory of 2136	1324	Ref PO-11059021022021.exe	RegSvcs.exe
PID 1324 wrote to memory of 2136	1324	Ref PO-11059021022021.exe	RegSvcs.exe
PID 1324 wrote to memory of 2136	1324	Ref PO-11059021022021.exe	RegSvcs.exe
PID 1324 wrote to memory of 2136	1324	Ref PO-11059021022021.exe	RegSvcs.exe
PID 1324 wrote to memory of 2136	1324	Ref PO-11059021022021.exe	RegSvcs.exe
PID 1324 wrote to memory of 2136	1324	Ref PO-11059021022021.exe	RegSvcs.exe
PID 2136 wrote to memory of 1416	2136	RegSvcs.exe	REG.exe
PID 2136 wrote to memory of 1416	2136	RegSvcs.exe	REG.exe
PID 2136 wrote to memory of 1416	2136	RegSvcs.exe	REG.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Ref PO-11059021022021.exe
"C:\Users\Admin\AppData\Local\Temp\Ref PO-11059021022021.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1324

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oABTFTamHr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9CAD.tmp"
2⤵
- Creates scheduled task(s)
PID:4280

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.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:2136

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:1416

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9CAD.tmp

Filesize
1KB

MD5
b110a33114cd670fae22f756303024c0

SHA1
75fd3e13636012f5476b850814092a565ab27eaa

SHA256
aa06ae6085cedbbd1856f801a50beb56282bdd32ac24b741e8453cdc1ba7029d

SHA512
d8c6ac7c589fffd6885332d1b5d02e34d91f150ad6fff338ecba24bd0002ab4211fb829603957c2ad39aa59616da45fd8689b5ca9ec8f8a666c2890fe258848a

Download Submit
memory/1324-130-0x0000000000AC0000-0x0000000000B92000-memory.dmp

Filesize
840KB

Download
memory/1324-131-0x0000000005D00000-0x00000000062A4000-memory.dmp

Filesize
5.6MB

Download
memory/1324-132-0x00000000058F0000-0x0000000005982000-memory.dmp

Filesize
584KB

Download
memory/1324-133-0x00000000058D0000-0x00000000058DA000-memory.dmp

Filesize
40KB

Download
memory/1324-134-0x000000000E8C0000-0x000000000E95C000-memory.dmp

Filesize
624KB

Download
memory/1416-141-0x0000000000000000-mapping.dmp

Download
memory/2136-137-0x0000000000000000-mapping.dmp

Download
memory/2136-138-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/2136-139-0x0000000005DB0000-0x0000000005E16000-memory.dmp

Filesize
408KB

Download
memory/2136-140-0x00000000069D0000-0x0000000006A20000-memory.dmp

Filesize
320KB

Download
memory/4280-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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