agenttesla | ca9705b69a492e5775f3a5131cbce6c442230f7572c21a23324b983819166154

General

Target

SIGNED AND STAMPED INVOICE.exe
Size

457KB
MD5

8c7516016e1bba2fe0e81b1792d9261e
SHA1

7d4851bad01bb5043d56ea2fb480b952cb087b84
SHA256

0b2ade3b609fe52eb27078440fe30c4983138af0a04bda84e92df8830338c9b1
SHA512

5f36c3f281f8ed5a22d6522623cef0839aebd2b6bebbbdeee068364827d11063d42656719309782843f6641687f1cfefd35b0d8d9fc03fb58a8f7b5360ada92c

Score

10^/10

agenttesla collection evasion keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.microtechlab.in
Port:
587
Username:
[email protected]
Password:
pune@123

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/964-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/964-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/964-66-0x000000000044CF5E-mapping.dmp	family_agenttesla
behavioral1/memory/964-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/964-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/964-70-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1956-57-0x00000000049C0000-0x0000000004A18000-memory.dmp	rezer0

Disables Task Manager via registry modification
evasion
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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

SIGNED AND STAMPED INVOICE.exe

description pid process target process

PID 1956 set thread context of 964 1956 SIGNED AND STAMPED INVOICE.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

848 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

840 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

964 RegSvcs.exe
964 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 964 RegSvcs.exe

description	pid	process	target process
PID 1956 set thread context of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe

pid	process
848	schtasks.exe

pid	process
840	REG.exe

pid	process
964	RegSvcs.exe
964	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	964	RegSvcs.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

SIGNED AND STAMPED INVOICE.exeRegSvcs.exe

description	pid	process	target process
PID 1956 wrote to memory of 848	1956	SIGNED AND STAMPED INVOICE.exe	schtasks.exe
PID 1956 wrote to memory of 848	1956	SIGNED AND STAMPED INVOICE.exe	schtasks.exe
PID 1956 wrote to memory of 848	1956	SIGNED AND STAMPED INVOICE.exe	schtasks.exe
PID 1956 wrote to memory of 848	1956	SIGNED AND STAMPED INVOICE.exe	schtasks.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 1956 wrote to memory of 964	1956	SIGNED AND STAMPED INVOICE.exe	RegSvcs.exe
PID 964 wrote to memory of 840	964	RegSvcs.exe	REG.exe
PID 964 wrote to memory of 840	964	RegSvcs.exe	REG.exe
PID 964 wrote to memory of 840	964	RegSvcs.exe	REG.exe
PID 964 wrote to memory of 840	964	RegSvcs.exe	REG.exe
PID 964 wrote to memory of 1472	964	RegSvcs.exe	netsh.exe
PID 964 wrote to memory of 1472	964	RegSvcs.exe	netsh.exe
PID 964 wrote to memory of 1472	964	RegSvcs.exe	netsh.exe
PID 964 wrote to memory of 1472	964	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\SIGNED AND STAMPED INVOICE.exe
"C:\Users\Admin\AppData\Local\Temp\SIGNED AND STAMPED INVOICE.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1956

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oDidNSRVZQUc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA62F.tmp"
2⤵
- Creates scheduled task(s)
PID:848

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:964

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:840

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1472

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

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA62F.tmp
Filesize
1KB

MD5
da029379c9f3cdccaf6c45f2ab90bd5e

SHA1
3d7981bae6ead5abc70b9d18a88d0e1e0128700a

SHA256
6df1ed8b4627044da164292be04a3fd93063c8790a3d60380ba53c50e18284cb

SHA512
88f668bb7a342c32452971381ffb3273791b6dbcaa1ca510e6dc57a55116ef32c05a0a99a6dff8ffad09d0a2b56d7bb9c77bc09af8ea20d287bd64fe090efecf

Download Submit
memory/840-72-0x0000000000000000-mapping.dmp

Download
memory/848-58-0x0000000000000000-mapping.dmp

Download
memory/964-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/964-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/964-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/964-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/964-66-0x000000000044CF5E-mapping.dmp

Download
memory/964-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/964-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/964-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1472-73-0x0000000000000000-mapping.dmp

Download
memory/1956-57-0x00000000049C0000-0x0000000004A18000-memory.dmp

Filesize
352KB

Download
memory/1956-56-0x00000000004B0000-0x00000000004B8000-memory.dmp

Filesize
32KB

Download
memory/1956-54-0x0000000001160000-0x00000000011D8000-memory.dmp

Filesize
480KB

Download
memory/1956-55-0x0000000075F61000-0x0000000075F63000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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