agenttesla | 4e09d4dd3d6bddd35fba42f66d6a6883ac9d3f2e8e504af1f2829f325940cbfb

General

Target

RFQ #10072020.exe
Size

574KB
MD5

faf8fa16db367aee00c9529e044207eb
SHA1

1ddd4c28cee94eb71245e9b7958653beb6558a93
SHA256

5c2ad1b9bc4c16fce888a0cf989f0c6885de81d0753d8863c7cf1de604c4c8e6
SHA512

eef35a9e647182f7adb7d93ef5c3d67fc4702bfa630614d6ed026f0465f8db68ff51bc6d6e607b52bfd3459c3bda7b9e2b54c43dd60ed95b803868c2ebb9fbd9

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.mdist.us
Port:
587
Username:
receiving@mdist.us
Password:
Receiving#4321

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/2512-137-0x0000000000400000-0x000000000044C000-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:

RFQ #10072020.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	RFQ #10072020.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\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-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

RFQ #10072020.exe

description pid process target process

PID 4544 set thread context of 2512 4544 RFQ #10072020.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

3432 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

3620 REG.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RFQ #10072020.exeRegSvcs.exe

pid process

4544 RFQ #10072020.exe
2512 RegSvcs.exe
2512 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RFQ #10072020.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 4544 RFQ #10072020.exe
Token: SeDebugPrivilege 2512 RegSvcs.exe

description	pid	process	target process
PID 4544 set thread context of 2512	4544	RFQ #10072020.exe	RegSvcs.exe

pid	process
3432	schtasks.exe

pid	process
3620	REG.exe

pid	process
4544	RFQ #10072020.exe
2512	RegSvcs.exe
2512	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	4544	RFQ #10072020.exe
Token: SeDebugPrivilege	2512	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

RFQ #10072020.exeRegSvcs.exe

description	pid	process	target process
PID 4544 wrote to memory of 3432	4544	RFQ #10072020.exe	schtasks.exe
PID 4544 wrote to memory of 3432	4544	RFQ #10072020.exe	schtasks.exe
PID 4544 wrote to memory of 3432	4544	RFQ #10072020.exe	schtasks.exe
PID 4544 wrote to memory of 2512	4544	RFQ #10072020.exe	RegSvcs.exe
PID 4544 wrote to memory of 2512	4544	RFQ #10072020.exe	RegSvcs.exe
PID 4544 wrote to memory of 2512	4544	RFQ #10072020.exe	RegSvcs.exe
PID 4544 wrote to memory of 2512	4544	RFQ #10072020.exe	RegSvcs.exe
PID 4544 wrote to memory of 2512	4544	RFQ #10072020.exe	RegSvcs.exe
PID 4544 wrote to memory of 2512	4544	RFQ #10072020.exe	RegSvcs.exe
PID 4544 wrote to memory of 2512	4544	RFQ #10072020.exe	RegSvcs.exe
PID 4544 wrote to memory of 2512	4544	RFQ #10072020.exe	RegSvcs.exe
PID 2512 wrote to memory of 3620	2512	RegSvcs.exe	REG.exe
PID 2512 wrote to memory of 3620	2512	RegSvcs.exe	REG.exe
PID 2512 wrote to memory of 3620	2512	RegSvcs.exe	REG.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\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-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\RFQ #10072020.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ #10072020.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4544

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FCRnNgb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3D47.tmp"
2⤵
- Creates scheduled task(s)
PID:3432

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:2512

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:3620

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k appmodel -p -s camsvc
1⤵
PID:1084

Network

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3D47.tmp
Filesize
1KB

MD5
c172f434dd51c06c4e261c953afdf929

SHA1
7199e8c2d2ac35081e63acfcc4beaffd7acdadea

SHA256
bdea765dafd8dbffd04d89b5611f595aa24dde2cdb35fb799e260580242370ca

SHA512
9975d21d8504bb78d770a031321f2ad98cfd189745147799f673b592e63445a4e21dc02603093b257b1af07d4171d57f5ecc808828796d293ea032aa00b1a160

Download Submit
memory/2512-136-0x0000000000000000-mapping.dmp

Download
memory/2512-137-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2512-138-0x00000000066C0000-0x0000000006726000-memory.dmp

Filesize
408KB

Download
memory/2512-139-0x0000000006DD0000-0x0000000006E20000-memory.dmp

Filesize
320KB

Download
memory/2512-141-0x0000000006ED0000-0x0000000006EDA000-memory.dmp

Filesize
40KB

Download
memory/3432-134-0x0000000000000000-mapping.dmp

Download
memory/3620-140-0x0000000000000000-mapping.dmp

Download
memory/4544-130-0x00000000005A0000-0x0000000000636000-memory.dmp

Filesize
600KB

Download
memory/4544-131-0x0000000007A70000-0x0000000008014000-memory.dmp

Filesize
5.6MB

Download
memory/4544-132-0x0000000007560000-0x00000000075F2000-memory.dmp

Filesize
584KB

Download
memory/4544-133-0x0000000008550000-0x00000000085EC000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads