agenttesla | 1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41

General

Target

1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe
Size

199KB
MD5

551b0bdaa46a48566dcc72b230618289
SHA1

a514325d8050829352c929fe3d283db9fb290182
SHA256

1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41
SHA512

f1e450254482f36854c6dc843cfd5b56e50f88dd56ac66ab6726020ff74e8d88d0fcd08c9389966ee108e4e2d0f1ae31890a9c26fea3b4b2016ad4ffaa877f2b
SSDEEP

3072:fYWrWoU49dkH+LGP34o2KerVUzeeDXbwa21Dv9ua/aHyvDvd2iK:fYWKoUIObwv

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.capalle-distrib.com
Port:
587
Username:
[email protected]
Password:
ZYrGQf$5
Email To:
[email protected]

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
3004	bzyvhxf.exe

Loads dropped DLL 1 IoCs

pid	Process
1900	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe

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

Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	aspnet_compiler.exe
Key opened	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	aspnet_compiler.exe
Key opened	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	aspnet_compiler.exe
Key opened	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe
Key opened	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe
Key opened	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3004 set thread context of 2456	3004	bzyvhxf.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1900	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe
1900	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe
3004	bzyvhxf.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1900	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe
Token: SeDebugPrivilege	3004	bzyvhxf.exe
Token: SeDebugPrivilege	2456	aspnet_compiler.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1900	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 3004	1900	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe	30
PID 1900 wrote to memory of 3004	1900	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe	30
PID 1900 wrote to memory of 3004	1900	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe	30
PID 1900 wrote to memory of 3004	1900	1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe	30
PID 3004 wrote to memory of 2456	3004	bzyvhxf.exe	33
PID 3004 wrote to memory of 2456	3004	bzyvhxf.exe	33
PID 3004 wrote to memory of 2456	3004	bzyvhxf.exe	33
PID 3004 wrote to memory of 2456	3004	bzyvhxf.exe	33
PID 3004 wrote to memory of 2456	3004	bzyvhxf.exe	33
PID 3004 wrote to memory of 2456	3004	bzyvhxf.exe	33
PID 3004 wrote to memory of 2456	3004	bzyvhxf.exe	33
PID 3004 wrote to memory of 2456	3004	bzyvhxf.exe	33
PID 3004 wrote to memory of 2456	3004	bzyvhxf.exe	33

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	aspnet_compiler.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	aspnet_compiler.exe

C:\Users\Admin\AppData\Local\Temp\1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe
"C:\Users\Admin\AppData\Local\Temp\1c86ea69172d009a3cdd1743213353ecfde93cbeeba216b81b2bfcf60934db41_JC.exe"
1⤵
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Users\Admin\AppData\Local\Temp\bzyvhxf.exe
  "C:\Users\Admin\AppData\Local\Temp\bzyvhxf.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3004
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    3⤵
    - Accesses Microsoft Outlook profiles
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:2456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\bzyvhxf.exe

Filesize
76KB

MD5
7044e350d5ce87c637beb058755884c2

SHA1
ac1062211fd3e2d0e0cb363e484a5ed33da88fc2

SHA256
6ff6c442c265d570f4ac800b48c25c85df51b3e2ce4d98aee9eb666894251e09

SHA512
121a297f67f9b0434b23273a8ad0d71a291a6c894c0278b8086a9be1eb82312e10e8e62bb2c41166c8ddff4001081ec77496b13c0b9acec15c5022371a55417b

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

Filesize
76KB

MD5
7044e350d5ce87c637beb058755884c2

SHA1
ac1062211fd3e2d0e0cb363e484a5ed33da88fc2

SHA256
6ff6c442c265d570f4ac800b48c25c85df51b3e2ce4d98aee9eb666894251e09

SHA512
121a297f67f9b0434b23273a8ad0d71a291a6c894c0278b8086a9be1eb82312e10e8e62bb2c41166c8ddff4001081ec77496b13c0b9acec15c5022371a55417b

Download Submit
\Users\Admin\AppData\Local\Temp\bzyvhxf.exe

Filesize
76KB

MD5
7044e350d5ce87c637beb058755884c2

SHA1
ac1062211fd3e2d0e0cb363e484a5ed33da88fc2

SHA256
6ff6c442c265d570f4ac800b48c25c85df51b3e2ce4d98aee9eb666894251e09

SHA512
121a297f67f9b0434b23273a8ad0d71a291a6c894c0278b8086a9be1eb82312e10e8e62bb2c41166c8ddff4001081ec77496b13c0b9acec15c5022371a55417b

Download Submit
memory/1900-3-0x0000000074E20000-0x00000000753CB000-memory.dmp

Filesize
5.7MB

Download
memory/1900-4-0x00000000021D0000-0x0000000002210000-memory.dmp

Filesize
256KB

Download
memory/1900-5-0x0000000074E20000-0x00000000753CB000-memory.dmp

Filesize
5.7MB

Download
memory/1900-6-0x00000000021D0000-0x0000000002210000-memory.dmp

Filesize
256KB

Download
memory/1900-7-0x00000000021D0000-0x0000000002210000-memory.dmp

Filesize
256KB

Download
memory/1900-0-0x0000000074E20000-0x00000000753CB000-memory.dmp

Filesize
5.7MB

Download
memory/1900-2-0x00000000021D0000-0x0000000002210000-memory.dmp

Filesize
256KB

Download
memory/1900-1-0x0000000074E20000-0x00000000753CB000-memory.dmp

Filesize
5.7MB

Download
memory/1900-45-0x00000000021D0000-0x0000000002210000-memory.dmp

Filesize
256KB

Download
memory/1900-43-0x00000000021D0000-0x0000000002210000-memory.dmp

Filesize
256KB

Download
memory/2456-33-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2456-40-0x0000000000540000-0x0000000000580000-memory.dmp

Filesize
256KB

Download
memory/2456-42-0x0000000000540000-0x0000000000580000-memory.dmp

Filesize
256KB

Download
memory/2456-41-0x000000006FCD0000-0x00000000703BE000-memory.dmp

Filesize
6.9MB

Download
memory/2456-39-0x000000006FCD0000-0x00000000703BE000-memory.dmp

Filesize
6.9MB

Download
memory/2456-38-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2456-23-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2456-25-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2456-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2456-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2456-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2456-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3004-35-0x00000000703C0000-0x0000000070AAE000-memory.dmp

Filesize
6.9MB

Download
memory/3004-17-0x0000000004210000-0x0000000004250000-memory.dmp

Filesize
256KB

Download
memory/3004-22-0x0000000005450000-0x000000000549C000-memory.dmp

Filesize
304KB

Download
memory/3004-21-0x00000000047A0000-0x00000000047E0000-memory.dmp

Filesize
256KB

Download
memory/3004-18-0x00000000703C0000-0x0000000070AAE000-memory.dmp

Filesize
6.9MB

Download
memory/3004-20-0x0000000004E90000-0x0000000004EE0000-memory.dmp

Filesize
320KB

Download
memory/3004-19-0x0000000004210000-0x0000000004250000-memory.dmp

Filesize
256KB

Download
memory/3004-16-0x00000000703C0000-0x0000000070AAE000-memory.dmp

Filesize
6.9MB

Download
memory/3004-15-0x0000000000B60000-0x0000000000B7A000-memory.dmp

Filesize
104KB

Download

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