agenttesla | 2f41597556b7d4f1a2e2bb3c90c53cdd6e714d665c63a8ed092176ee7bdb334f

General

Target

b671b2babfeb471031cbb07e6ff11396.exe
Size

917KB
MD5

b671b2babfeb471031cbb07e6ff11396
SHA1

8881ad0f3b5912e735c9c7425cbf0ed54a93a1a1
SHA256

2f41597556b7d4f1a2e2bb3c90c53cdd6e714d665c63a8ed092176ee7bdb334f
SHA512

1f7bad19771191f6cac9e3aa03f783184a9d59507c126c545fecf17aa41f0a187987b66c394f2c813d4f4b5c2d0dc54129f1fd424a2f8319bd899795799aae4b
SSDEEP

24576:DwErS/d3SnxUy6uNxrg945xKWofOMbzn:7FxVtNua5xNc

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.nhatanhco.net
Port:
587
Username:
[email protected]
Password:
Q1ndO04L
Email To:
[email protected]

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/2640-17-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

resource	yara_rule
behavioral2/memory/4124-7-0x00000000061E0000-0x00000000061F2000-memory.dmp	CustAttr

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	b671b2babfeb471031cbb07e6ff11396.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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b671b2babfeb471031cbb07e6ff11396.exe
Key opened	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b671b2babfeb471031cbb07e6ff11396.exe
Key opened	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b671b2babfeb471031cbb07e6ff11396.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4124 set thread context of 2640	4124	b671b2babfeb471031cbb07e6ff11396.exe	104

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

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/Job

T1053

pid	Process
4820	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4124	b671b2babfeb471031cbb07e6ff11396.exe
2640	b671b2babfeb471031cbb07e6ff11396.exe
2640	b671b2babfeb471031cbb07e6ff11396.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4124	b671b2babfeb471031cbb07e6ff11396.exe
Token: SeDebugPrivilege	2640	b671b2babfeb471031cbb07e6ff11396.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2640	b671b2babfeb471031cbb07e6ff11396.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4124 wrote to memory of 4820	4124	b671b2babfeb471031cbb07e6ff11396.exe	102
PID 4124 wrote to memory of 4820	4124	b671b2babfeb471031cbb07e6ff11396.exe	102
PID 4124 wrote to memory of 4820	4124	b671b2babfeb471031cbb07e6ff11396.exe	102
PID 4124 wrote to memory of 2640	4124	b671b2babfeb471031cbb07e6ff11396.exe	104
PID 4124 wrote to memory of 2640	4124	b671b2babfeb471031cbb07e6ff11396.exe	104
PID 4124 wrote to memory of 2640	4124	b671b2babfeb471031cbb07e6ff11396.exe	104
PID 4124 wrote to memory of 2640	4124	b671b2babfeb471031cbb07e6ff11396.exe	104
PID 4124 wrote to memory of 2640	4124	b671b2babfeb471031cbb07e6ff11396.exe	104
PID 4124 wrote to memory of 2640	4124	b671b2babfeb471031cbb07e6ff11396.exe	104
PID 4124 wrote to memory of 2640	4124	b671b2babfeb471031cbb07e6ff11396.exe	104
PID 4124 wrote to memory of 2640	4124	b671b2babfeb471031cbb07e6ff11396.exe	104

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b671b2babfeb471031cbb07e6ff11396.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b671b2babfeb471031cbb07e6ff11396.exe

C:\Users\Admin\AppData\Local\Temp\b671b2babfeb471031cbb07e6ff11396.exe
"C:\Users\Admin\AppData\Local\Temp\b671b2babfeb471031cbb07e6ff11396.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4124
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ypyKcwOStR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp65E9.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4820
- C:\Users\Admin\AppData\Local\Temp\b671b2babfeb471031cbb07e6ff11396.exe
  "C:\Users\Admin\AppData\Local\Temp\b671b2babfeb471031cbb07e6ff11396.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

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

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\b671b2babfeb471031cbb07e6ff11396.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp65E9.tmp

Filesize
1KB

MD5
d9c278cd5c501b06ee7efd5310a7ba6e

SHA1
5bbfa82515d8a8b0b8abd2018160e17251e27cd7

SHA256
925894e6c722b853221553492f7d47f62d05936e4e0bd4ad05e585e2231e12bd

SHA512
7228a22031f6630f2be2933f87d02dbe9464acc7ee472e5d3f9b16c9ce01fcdb590a4fc8416c1936dc70940da428481b6fb333d216f2f2b02c01d2fff00bce36

Download Submit
memory/2640-27-0x0000000006980000-0x00000000069D0000-memory.dmp

Filesize
320KB

Download
memory/2640-26-0x0000000005800000-0x0000000005810000-memory.dmp

Filesize
64KB

Download
memory/2640-25-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/2640-24-0x0000000006440000-0x00000000064A6000-memory.dmp

Filesize
408KB

Download
memory/2640-23-0x0000000005A50000-0x0000000005A68000-memory.dmp

Filesize
96KB

Download
memory/2640-22-0x0000000005800000-0x0000000005810000-memory.dmp

Filesize
64KB

Download
memory/2640-21-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/2640-17-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4124-10-0x0000000006A20000-0x0000000006A9A000-memory.dmp

Filesize
488KB

Download
memory/4124-11-0x0000000006AA0000-0x0000000006ADE000-memory.dmp

Filesize
248KB

Download
memory/4124-0-0x0000000000320000-0x000000000040C000-memory.dmp

Filesize
944KB

Download
memory/4124-9-0x0000000004E50000-0x0000000004E60000-memory.dmp

Filesize
64KB

Download
memory/4124-8-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/4124-20-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/4124-7-0x00000000061E0000-0x00000000061F2000-memory.dmp

Filesize
72KB

Download
memory/4124-6-0x00000000050B0000-0x000000000514C000-memory.dmp

Filesize
624KB

Download
memory/4124-5-0x0000000004E00000-0x0000000004E0A000-memory.dmp

Filesize
40KB

Download
memory/4124-4-0x0000000004E50000-0x0000000004E60000-memory.dmp

Filesize
64KB

Download
memory/4124-3-0x0000000004E80000-0x0000000004F12000-memory.dmp

Filesize
584KB

Download
memory/4124-2-0x0000000005430000-0x00000000059D4000-memory.dmp

Filesize
5.6MB

Download
memory/4124-1-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads