agenttesla | 39a300059c0190fb239dc96ffa3160a318cf383fb0b792bd206cdc23c458033e

Analysis

max time kernel
138s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17-05-2024 02:28

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General

Target

4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe
Size

4.7MB
MD5

40015adb59181ae2bc09e0f271373188
SHA1

f1690da2e26e5a7d31d3cce7b74a6185f60333f5
SHA256

4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c
SHA512

e5cbf81c29bb44dbee01474e15bef92211f70b57f91489ca963e0f91cab7077081453ee2d2f833e7002d96fd0bdd8a70af3263d4ec548f2af22e4a672a893145
SSDEEP

24576:ULwV1goQrA9eYALPzgpICbdW/G/4ceP81kxr/wKXo4p/PGqA/v3MnU2ZRZhRVHTa:U0Vn

Score

10^/10

agenttesla asyncrat april3rd2024 keylogger persistence 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

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_C881.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:

RegAsm.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation RegAsm.exe
Executes dropped EXE 2 IoCs

Processes:

FB_C7A5.tmp.exeFB_C881.tmp.exe

pid process

2524 FB_C7A5.tmp.exe
2084 FB_C881.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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	RegAsm.exe

pid	process
2524	FB_C7A5.tmp.exe
2084	FB_C881.tmp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\oouvef = "C:\\Users\\Admin\\AppData\\Roaming\\oouvef.exe"	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe

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

16 api.ipify.org
17 api.ipify.org

flow	ioc
16	api.ipify.org
17	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe

description	pid	process	target process
PID 2124 set thread context of 2408	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe	RegAsm.exe

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_C7A5.tmp.exe

pid process

2524 FB_C7A5.tmp.exe
2524 FB_C7A5.tmp.exe

pid	process
2524	FB_C7A5.tmp.exe
2524	FB_C7A5.tmp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exeFB_C7A5.tmp.exe

description	pid	process
Token: SeDebugPrivilege	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe
Token: SeDebugPrivilege	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe
Token: SeDebugPrivilege	2524	FB_C7A5.tmp.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exeRegAsm.exe

description	pid	process	target process
PID 2124 wrote to memory of 2408	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe	RegAsm.exe
PID 2124 wrote to memory of 2408	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe	RegAsm.exe
PID 2124 wrote to memory of 2408	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe	RegAsm.exe
PID 2124 wrote to memory of 2408	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe	RegAsm.exe
PID 2124 wrote to memory of 2408	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe	RegAsm.exe
PID 2124 wrote to memory of 2408	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe	RegAsm.exe
PID 2124 wrote to memory of 2408	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe	RegAsm.exe
PID 2124 wrote to memory of 2408	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe	RegAsm.exe
PID 2124 wrote to memory of 2408	2124	4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe	RegAsm.exe
PID 2408 wrote to memory of 2524	2408	RegAsm.exe	FB_C7A5.tmp.exe
PID 2408 wrote to memory of 2524	2408	RegAsm.exe	FB_C7A5.tmp.exe
PID 2408 wrote to memory of 2524	2408	RegAsm.exe	FB_C7A5.tmp.exe
PID 2408 wrote to memory of 2084	2408	RegAsm.exe	FB_C881.tmp.exe
PID 2408 wrote to memory of 2084	2408	RegAsm.exe	FB_C881.tmp.exe
PID 2408 wrote to memory of 2084	2408	RegAsm.exe	FB_C881.tmp.exe

C:\Users\Admin\AppData\Local\Temp\4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe
"C:\Users\Admin\AppData\Local\Temp\4bcc19c324294a3b92ed5067ca495f51a05362edcb2cf7c09d8619842a25a99c.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:2408
- - C:\Users\Admin\AppData\Local\Temp\FB_C7A5.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\FB_C7A5.tmp.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2524
- - C:\Users\Admin\AppData\Local\Temp\FB_C881.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\FB_C881.tmp.exe"
    3⤵
    - Executes dropped EXE
    PID:2084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\FB_C7A5.tmp.exe

Filesize
237KB

MD5
8c4c985b5719d0acadafb2cc03f0e86e

SHA1
0e0644087a29575b5c4a1d3b76a79cf95c577d7b

SHA256
a2007da837ca22cd0e894946f9ce20a3352ac42c34c5930c159730ea4538e79b

SHA512
8255101de0ed591128c5d093cd683193a24f5044fc297e6e51ae58714b121164b480c9868c477c24d653a231dc17db4c5f78de9ccc084e14133cc95e14e6219c

Download Submit
C:\Users\Admin\AppData\Local\Temp\FB_C881.tmp.exe

Filesize
45KB

MD5
ac190c9e687b2c110354d3809d32a57d

SHA1
3fdfeca134e469f6ac42e03b3d39359313fb36fc

SHA256
6c0291916555438da7d3705991100d295d480ae58b98147a4d83fbd3cfb8dc19

SHA512
161ae735acf5b60c6c906c1b0223838987a24cbb410623af2495b31e2e663561a6ecf1ad5f08956a6fb2134ebd32aaaa1573bae7e1c4abdfb7fb0ca8b2a9ecb5

Download Submit
memory/2084-4920-0x0000000000980000-0x0000000000992000-memory.dmp

Filesize
72KB

Download
memory/2084-4921-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/2084-4928-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/2124-30-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-14-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-2-0x0000000006970000-0x0000000006BA6000-memory.dmp

Filesize
2.2MB

Download
memory/2124-3-0x0000000007160000-0x0000000007704000-memory.dmp

Filesize
5.6MB

Download
memory/2124-4-0x0000000006C50000-0x0000000006CE2000-memory.dmp

Filesize
584KB

Download
memory/2124-5-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-40-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-50-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-68-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-66-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-64-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-60-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-58-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-56-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-54-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-52-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-62-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-48-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-46-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-42-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-38-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-34-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-32-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-0-0x0000000074DCE000-0x0000000074DCF000-memory.dmp

Filesize
4KB

Download
memory/2124-44-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-1-0x0000000000880000-0x0000000000D32000-memory.dmp

Filesize
4.7MB

Download
memory/2124-36-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-28-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-24-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-22-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-20-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-18-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-16-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-12-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-10-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-8-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-6-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-26-0x0000000006970000-0x0000000006BA1000-memory.dmp

Filesize
2.2MB

Download
memory/2124-4885-0x0000000074DC0000-0x0000000075570000-memory.dmp

Filesize
7.7MB

Download
memory/2124-4886-0x0000000074DC0000-0x0000000075570000-memory.dmp

Filesize
7.7MB

Download
memory/2124-4887-0x0000000005750000-0x00000000057C2000-memory.dmp

Filesize
456KB

Download
memory/2124-4888-0x00000000057C0000-0x000000000580C000-memory.dmp

Filesize
304KB

Download
memory/2124-4889-0x0000000006E50000-0x0000000006EA4000-memory.dmp

Filesize
336KB

Download
memory/2124-4898-0x0000000074DC0000-0x0000000075570000-memory.dmp

Filesize
7.7MB

Download
memory/2524-4922-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/2524-4923-0x0000000000690000-0x00000000006D2000-memory.dmp

Filesize
264KB

Download
memory/2524-4924-0x00000000050C0000-0x0000000005126000-memory.dmp

Filesize
408KB

Download
memory/2524-4925-0x0000000006740000-0x0000000006790000-memory.dmp

Filesize
320KB

Download
memory/2524-4926-0x0000000006830000-0x00000000068CC000-memory.dmp

Filesize
624KB

Download
memory/2524-4927-0x0000000006900000-0x000000000690A000-memory.dmp

Filesize
40KB

Download
memory/2524-4929-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download