agenttesla | 375829ac1424371c42781a040e71774597f1e2da3b10df0f0937479da24f4241

General

Target

3384-4910-0x0000000000400000-0x000000000044B000-memory.exe
Size

300KB
MD5

89f413212bcb3c3eb5a5d496bf33c812
SHA1

319e057de2b5fc74f5d40507d314e005de2cab35
SHA256

375829ac1424371c42781a040e71774597f1e2da3b10df0f0937479da24f4241
SHA512

af92e2f1a941ff3560b56de8fde953a9bfcf80c606f12cf2683b32dfc64015cc82cc52c05234dbf9d3803ec7332044b9b4741f2c1a04c7f15fcdf4679f5277a4
SSDEEP

6144:cl+xRRRRp3EagaSHorWtWTmFduCNXaKluwhOq3bjBZYl:9xRRRRp3LgaSHorWtWCuCNZ3BZYl

Score

10^/10

agenttesla asyncrat april3rd2024 keylogger rat spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
66.29.151.236
Port:
587
Username:
[email protected]
Password:
s9jjoVvaZchS

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

April3rd2024

C2

94.156.65.181:3434

Mutex

A234sdgrgMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
66.29.151.236
Port:
587
Username:
[email protected]
Password:
s9jjoVvaZchS
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\FB_6497.tmp.exe	family_asyncrat

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:

3384-4910-0x0000000000400000-0x000000000044B000-memory.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	3384-4910-0x0000000000400000-0x000000000044B000-memory.exe

Executes dropped EXE 2 IoCs

Processes:

FB_6419.tmp.exeFB_6497.tmp.exe

pid process

3284 FB_6419.tmp.exe
1668 FB_6497.tmp.exe
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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 stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

19 api.ipify.org
20 api.ipify.org
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

FB_6419.tmp.exe

pid process

3284 FB_6419.tmp.exe
3284 FB_6419.tmp.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

FB_6419.tmp.exe

description pid process

Token: SeDebugPrivilege 3284 FB_6419.tmp.exe

pid	process
3284	FB_6419.tmp.exe
1668	FB_6497.tmp.exe

flow	ioc
19	api.ipify.org
20	api.ipify.org

pid	process
3284	FB_6419.tmp.exe
3284	FB_6419.tmp.exe

description	pid	process
Token: SeDebugPrivilege	3284	FB_6419.tmp.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

3384-4910-0x0000000000400000-0x000000000044B000-memory.exe

description	pid	process	target process
PID 4872 wrote to memory of 3284	4872	3384-4910-0x0000000000400000-0x000000000044B000-memory.exe	FB_6419.tmp.exe
PID 4872 wrote to memory of 3284	4872	3384-4910-0x0000000000400000-0x000000000044B000-memory.exe	FB_6419.tmp.exe
PID 4872 wrote to memory of 3284	4872	3384-4910-0x0000000000400000-0x000000000044B000-memory.exe	FB_6419.tmp.exe
PID 4872 wrote to memory of 1668	4872	3384-4910-0x0000000000400000-0x000000000044B000-memory.exe	FB_6497.tmp.exe
PID 4872 wrote to memory of 1668	4872	3384-4910-0x0000000000400000-0x000000000044B000-memory.exe	FB_6497.tmp.exe
PID 4872 wrote to memory of 1668	4872	3384-4910-0x0000000000400000-0x000000000044B000-memory.exe	FB_6497.tmp.exe

C:\Users\Admin\AppData\Local\Temp\3384-4910-0x0000000000400000-0x000000000044B000-memory.exe
"C:\Users\Admin\AppData\Local\Temp\3384-4910-0x0000000000400000-0x000000000044B000-memory.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4872
- C:\Users\Admin\AppData\Local\Temp\FB_6419.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\FB_6419.tmp.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3284
- C:\Users\Admin\AppData\Local\Temp\FB_6497.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\FB_6497.tmp.exe"
  2⤵
  - Executes dropped EXE
  PID:1668

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\FB_6419.tmp.exe

Filesize
237KB

MD5
8c4c985b5719d0acadafb2cc03f0e86e

SHA1
0e0644087a29575b5c4a1d3b76a79cf95c577d7b

SHA256
a2007da837ca22cd0e894946f9ce20a3352ac42c34c5930c159730ea4538e79b

SHA512
8255101de0ed591128c5d093cd683193a24f5044fc297e6e51ae58714b121164b480c9868c477c24d653a231dc17db4c5f78de9ccc084e14133cc95e14e6219c

Download Submit
C:\Users\Admin\AppData\Local\Temp\FB_6497.tmp.exe

Filesize
45KB

MD5
ac190c9e687b2c110354d3809d32a57d

SHA1
3fdfeca134e469f6ac42e03b3d39359313fb36fc

SHA256
6c0291916555438da7d3705991100d295d480ae58b98147a4d83fbd3cfb8dc19

SHA512
161ae735acf5b60c6c906c1b0223838987a24cbb410623af2495b31e2e663561a6ecf1ad5f08956a6fb2134ebd32aaaa1573bae7e1c4abdfb7fb0ca8b2a9ecb5

Download Submit
memory/1668-22-0x00000000739CE000-0x00000000739CF000-memory.dmp

Filesize
4KB

Download
memory/1668-23-0x0000000000730000-0x0000000000742000-memory.dmp

Filesize
72KB

Download
memory/1668-36-0x00000000739C0000-0x0000000074170000-memory.dmp

Filesize
7.7MB

Download
memory/1668-34-0x00000000739CE000-0x00000000739CF000-memory.dmp

Filesize
4KB

Download
memory/1668-29-0x00000000739C0000-0x0000000074170000-memory.dmp

Filesize
7.7MB

Download
memory/3284-28-0x00000000739C0000-0x0000000074170000-memory.dmp

Filesize
7.7MB

Download
memory/3284-27-0x00000000058C0000-0x0000000005926000-memory.dmp

Filesize
408KB

Download
memory/3284-26-0x0000000005CB0000-0x0000000006254000-memory.dmp

Filesize
5.6MB

Download
memory/3284-30-0x0000000006F60000-0x0000000006FB0000-memory.dmp

Filesize
320KB

Download
memory/3284-31-0x0000000007050000-0x00000000070EC000-memory.dmp

Filesize
624KB

Download
memory/3284-32-0x0000000007190000-0x0000000007222000-memory.dmp

Filesize
584KB

Download
memory/3284-33-0x0000000007120000-0x000000000712A000-memory.dmp

Filesize
40KB

Download
memory/3284-25-0x00000000739C0000-0x0000000074170000-memory.dmp

Filesize
7.7MB

Download
memory/3284-35-0x00000000739C0000-0x0000000074170000-memory.dmp

Filesize
7.7MB

Download
memory/3284-24-0x0000000000EB0000-0x0000000000EF2000-memory.dmp

Filesize
264KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads