agenttesla | 4836a622dd769623b0d890d6d785984db04adc0cf735fb316dba6ab7c56bad33

General

Target

20200508-0001.exe
Size

643KB
MD5

e59ebaff1ba3f263272de41c4619a195
SHA1

b29a9835bb81c2b5f86db0e1195a39a4a1a2d54f
SHA256

4836a622dd769623b0d890d6d785984db04adc0cf735fb316dba6ab7c56bad33
SHA512

48711298a136bef7f3a618c38bd103dc547666d2de98b15b1849c71aefd1c7651c6c1f1bb842bc8fdad17de0898c1676ff69707068d433ad588dd056c5278c3d

Score

10^/10

agenttesla coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.privateemail.com
Port:
587
Username:
azuk@aqausmartinc.cam
Password:
71c7eb1f8baaD$

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/756-6-0x0000000000530000-0x0000000000532000-memory.dmp	coreentity

AgentTesla Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1084-13-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1084-14-0x000000000044B41E-mapping.dmp	family_agenttesla
behavioral1/memory/1084-15-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1084-16-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

rezer0 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/756-7-0x00000000048F0000-0x0000000004942000-memory.dmp	rezer0

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

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

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

Data from Local System
T1005

Credentials in Files
T1081
Suspicious use of SetThreadContext 1 IoCs

Processes:

20200508-0001.exe

description pid process target process

PID 756 set thread context of 1084 756 20200508-0001.exe 20200508-0001.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

864 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

20200508-0001.exe

pid process

1084 20200508-0001.exe
1084 20200508-0001.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

20200508-0001.exe20200508-0001.exe

description pid process

Token: SeDebugPrivilege 756 20200508-0001.exe
Token: SeDebugPrivilege 1084 20200508-0001.exe

description	pid	process	target process
PID 756 set thread context of 1084	756	20200508-0001.exe	20200508-0001.exe

pid	process
864	schtasks.exe

pid	process
1084	20200508-0001.exe
1084	20200508-0001.exe

description	pid	process
Token: SeDebugPrivilege	756	20200508-0001.exe
Token: SeDebugPrivilege	1084	20200508-0001.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

20200508-0001.exe

description	pid	process	target process
PID 756 wrote to memory of 864	756	20200508-0001.exe	schtasks.exe
PID 756 wrote to memory of 864	756	20200508-0001.exe	schtasks.exe
PID 756 wrote to memory of 864	756	20200508-0001.exe	schtasks.exe
PID 756 wrote to memory of 864	756	20200508-0001.exe	schtasks.exe
PID 756 wrote to memory of 1084	756	20200508-0001.exe	20200508-0001.exe
PID 756 wrote to memory of 1084	756	20200508-0001.exe	20200508-0001.exe
PID 756 wrote to memory of 1084	756	20200508-0001.exe	20200508-0001.exe
PID 756 wrote to memory of 1084	756	20200508-0001.exe	20200508-0001.exe
PID 756 wrote to memory of 1084	756	20200508-0001.exe	20200508-0001.exe
PID 756 wrote to memory of 1084	756	20200508-0001.exe	20200508-0001.exe
PID 756 wrote to memory of 1084	756	20200508-0001.exe	20200508-0001.exe
PID 756 wrote to memory of 1084	756	20200508-0001.exe	20200508-0001.exe
PID 756 wrote to memory of 1084	756	20200508-0001.exe	20200508-0001.exe

C:\Users\Admin\AppData\Local\Temp\20200508-0001.exe
"C:\Users\Admin\AppData\Local\Temp\20200508-0001.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:756

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rGLuFTqgeX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE82.tmp"
2⤵
- Creates scheduled task(s)
PID:864

C:\Users\Admin\AppData\Local\Temp\20200508-0001.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1084

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE82.tmp
MD5
ede5a6aec61f70658a12b5e28826889d

SHA1
a18b0b706f9073b523cc88c7250ed99cb2512b09

SHA256
af0f67d28c181fc887ca29d1eaca70c5ef2fa8285fcd153609a0dc56eeb37257

SHA512
a9c738ad8cd2676beb4072dbf459cc278126355c25093d867e5148585d29992477eb9b197a4b2a6ba443c8d6ac36f3b4bc985db50a78fea81a3e7b9d61cbef42

Download Submit
memory/756-20-0x00000000006E0000-0x0000000000710000-memory.dmp

Filesize
192KB

Download
memory/756-1-0x00000000008B0000-0x00000000008B1000-memory.dmp

Filesize
4KB

Download
memory/756-3-0x0000000000370000-0x00000000003DF000-memory.dmp

Filesize
444KB

Download
memory/756-4-0x0000000000670000-0x0000000000681000-memory.dmp

Filesize
68KB

Download
memory/756-6-0x0000000000530000-0x0000000000532000-memory.dmp

Filesize
8KB

Download
memory/756-7-0x00000000048F0000-0x0000000004942000-memory.dmp

Filesize
328KB

Download
memory/756-0-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/864-9-0x0000000000000000-mapping.dmp

Download
memory/1084-14-0x000000000044B41E-mapping.dmp

Download
memory/1084-15-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1084-16-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1084-17-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/1084-13-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads