agenttesla | a9eb2a9ef48711c9387835f6a67ceeaf683e40b74d3fbd9570b2c5632ea60729

Analysis

max time kernel
90s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2022, 04:17

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General

Target
[email protected]
Size 1.1MB
Sample221004-ewc1hsbhek
SHA256 a9eb2a9ef48711c9387835f6a67ceeaf683e40b74d3fbd9570b2c5632ea60729
MD5 1346f7520c9db0d92fea8190946c4039
SHA1 52b72e93d302d53742aec0adcb1e6f4938450316
SHA512 c62e3555e2c4dca56c58f905e5d6f339d0914d6e0bc4baf29f607006b76e11226fb0349fbae3854091953be6ee5d5f2dffecda051d43d3582ad2bdc143436d3c
SSDEEP 12288:ZgDkM7gA8Z7p7cYuKTBWlZ4RCv2sAUPg1Ckpl9vmXVHMSokgmxRMs0h0yaCD9aVs:6d8jyKElZE0djCLvQHh5gmxx8
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot5662683474:AAFvSjyPXTiwhBPcFi8of3_-_FCdfhhN8x0/

Signatures

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

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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	[email protected]

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
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 stealer

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 stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	[email protected]
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	[email protected]
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	[email protected]

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4368 set thread context of 1272	4368	[email protected]	91

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

pid	Process
484	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4368	[email protected]
4368	[email protected]
4368	[email protected]
1272	[email protected]
1272	[email protected]

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4368	[email protected]
Token: SeDebugPrivilege	1272	[email protected]

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4368 wrote to memory of 484	4368	[email protected]	88
PID 4368 wrote to memory of 484	4368	[email protected]	88
PID 4368 wrote to memory of 484	4368	[email protected]	88
PID 4368 wrote to memory of 5112	4368	[email protected]	90
PID 4368 wrote to memory of 5112	4368	[email protected]	90
PID 4368 wrote to memory of 5112	4368	[email protected]	90
PID 4368 wrote to memory of 1272	4368	[email protected]	91
PID 4368 wrote to memory of 1272	4368	[email protected]	91
PID 4368 wrote to memory of 1272	4368	[email protected]	91
PID 4368 wrote to memory of 1272	4368	[email protected]	91
PID 4368 wrote to memory of 1272	4368	[email protected]	91
PID 4368 wrote to memory of 1272	4368	[email protected]	91
PID 4368 wrote to memory of 1272	4368	[email protected]	91
PID 4368 wrote to memory of 1272	4368	[email protected]	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	[email protected]

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	[email protected]

C:\Users\Admin\AppData\Local\Temp\[email protected]
"C:\Users\Admin\AppData\Local\Temp\[email protected]"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4368
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UNmyRLtUXIjbN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6D8F.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:484
- C:\Users\Admin\AppData\Local\Temp\[email protected]
  "{path}"
  2⤵
  PID:5112
- C:\Users\Admin\AppData\Local\Temp\[email protected]
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1272

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

[email protected]

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\[email protected]
Size 1KB
SHA256 e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99
MD5 84e77a587d94307c0ac1357eb4d3d46f
SHA1 83cc900f9401f43d181207d64c5adba7a85edc1e
SHA512 aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691
MD5 SHA1 SHA512

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tmp6D8F.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp6D8F.tmp
Size 1KB
SHA256 66c8d70330c4d0865d9fffa337d7352b05b225bd9dad2efdb3bf5fd54a0a05bb
MD5 890ea92e065b3d115103abd186e5de40
SHA1 efcb6f9ec0a369e5130df2432c5421b7406ad3a6
SHA512 ef0e331249314e7aacb382d21168f1abe015ffa940d3bacdbc4cf0b85abd01fdf45c09c625d5544cd305e640925dd4dc37f22d8b34f64e3e6cf98f3302b8aece
MD5 SHA1 SHA512

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memory/1272-141-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1272-143-0x0000000005CB0000-0x0000000005D16000-memory.dmp

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memory/1272-144-0x0000000006A60000-0x0000000006AB0000-memory.dmp

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memory/4368-136-0x0000000004F00000-0x0000000004F0A000-memory.dmp

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memory/4368-135-0x0000000007390000-0x000000000742C000-memory.dmp

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memory/4368-134-0x00000000072F0000-0x0000000007382000-memory.dmp

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memory/4368-132-0x0000000000270000-0x0000000000390000-memory.dmp

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memory/4368-133-0x00000000078A0000-0x0000000007E44000-memory.dmp

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