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

Credentials

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

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
behavioral2/memory/4756-7-0x000000000A860000-0x000000000A862000-memory.dmp	coreentity

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/832-12-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral2/memory/832-13-0x000000000044B41E-mapping.dmp	family_agenttesla

rezer0 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral2/memory/4756-8-0x000000000DA70000-0x000000000DAC2000-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 4756 set thread context of 832 4756 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

2088 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

20200508-0001.exe

pid process

832 20200508-0001.exe
832 20200508-0001.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

20200508-0001.exe20200508-0001.exe

description pid process

Token: SeDebugPrivilege 4756 20200508-0001.exe
Token: SeDebugPrivilege 832 20200508-0001.exe

description	pid	process	target process
PID 4756 set thread context of 832	4756	20200508-0001.exe	20200508-0001.exe

pid	process
2088	schtasks.exe

pid	process
832	20200508-0001.exe
832	20200508-0001.exe

description	pid	process
Token: SeDebugPrivilege	4756	20200508-0001.exe
Token: SeDebugPrivilege	832	20200508-0001.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

20200508-0001.exe

description	pid	process	target process
PID 4756 wrote to memory of 2088	4756	20200508-0001.exe	schtasks.exe
PID 4756 wrote to memory of 2088	4756	20200508-0001.exe	schtasks.exe
PID 4756 wrote to memory of 2088	4756	20200508-0001.exe	schtasks.exe
PID 4756 wrote to memory of 832	4756	20200508-0001.exe	20200508-0001.exe
PID 4756 wrote to memory of 832	4756	20200508-0001.exe	20200508-0001.exe
PID 4756 wrote to memory of 832	4756	20200508-0001.exe	20200508-0001.exe
PID 4756 wrote to memory of 832	4756	20200508-0001.exe	20200508-0001.exe
PID 4756 wrote to memory of 832	4756	20200508-0001.exe	20200508-0001.exe
PID 4756 wrote to memory of 832	4756	20200508-0001.exe	20200508-0001.exe
PID 4756 wrote to memory of 832	4756	20200508-0001.exe	20200508-0001.exe
PID 4756 wrote to memory of 832	4756	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:4756

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rGLuFTqgeX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE67D.tmp"
2⤵
- Creates scheduled task(s)
PID:2088

C:\Users\Admin\AppData\Local\Temp\20200508-0001.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:832

Network

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\20200508-0001.exe.log
MD5
b4f7a6a57cb46d94b72410eb6a6d45a9

SHA1
69f3596ffa027202d391444b769ceea0ae14c5f7

SHA256
23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

SHA512
be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE67D.tmp
MD5
8994d2f498606569f7386facd3aea623

SHA1
5a08fab4ab66a1a9b5990f89586f6ea7f2c669e8

SHA256
b73030bf2a9c93afdcfb02050d7cd59fe779b1e568ba137c21eeeba4f10a286c

SHA512
0ba5a93375f5041023fc1af648796aa774cc1a9787f5f1c3cdfb0833953b8a6c2001c2371d8e8234104fe7b1f8b5ceb7f300faee6cb47563b5fbbea01672358a

Download Submit
memory/832-21-0x0000000005A90000-0x0000000005A91000-memory.dmp

Filesize
4KB

Download
memory/832-20-0x0000000004EE0000-0x0000000004EE1000-memory.dmp

Filesize
4KB

Download
memory/832-15-0x0000000073150000-0x000000007383E000-memory.dmp

Filesize
6.9MB

Download
memory/832-13-0x000000000044B41E-mapping.dmp

Download
memory/832-12-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2088-10-0x0000000000000000-mapping.dmp

Download
memory/4756-5-0x000000000A4D0000-0x000000000A4D1000-memory.dmp

Filesize
4KB

Download
memory/4756-9-0x000000000DB80000-0x000000000DB81000-memory.dmp

Filesize
4KB

Download
memory/4756-8-0x000000000DA70000-0x000000000DAC2000-memory.dmp

Filesize
328KB

Download
memory/4756-7-0x000000000A860000-0x000000000A862000-memory.dmp

Filesize
8KB

Download
memory/4756-6-0x0000000002A30000-0x0000000002A31000-memory.dmp

Filesize
4KB

Download
memory/4756-0-0x0000000073150000-0x000000007383E000-memory.dmp

Filesize
6.9MB

Download
memory/4756-4-0x000000000A9D0000-0x000000000A9D1000-memory.dmp

Filesize
4KB

Download
memory/4756-3-0x0000000007460000-0x00000000074CF000-memory.dmp

Filesize
444KB

Download
memory/4756-1-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads