agenttesla | f5eec7db443f930140c0bb15e7f5867a036fb32a5adee722b2ed6013925bfd8b

General

Target

ungziped_file.exe
Size

768KB
MD5

db8d6c06173735452849240ec80d50e7
SHA1

33117b56e8c2412cb600bf7caf4a2c271cf9bb8b
SHA256

f5eec7db443f930140c0bb15e7f5867a036fb32a5adee722b2ed6013925bfd8b
SHA512

03533505f85e7d01ba471b5822fc1cccb13870cdfd8264d4c70de635084a83f9c71fac7ef4fb112e07e91176f364769913c2c7cf89757b30824e50a444294dfb
SSDEEP

12288:xh11KhjmoF+RHCpC9iZpXwjWmaWNjoBe7COYYgoHN68lNCXlkd+NuoYCH:vPKhjb4CpBpXwvKfOYkHhEFXYCH

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.embon.com.ar
Port:
587
Username:
[email protected]
Password:
Embon2018nov
Email To:
[email protected]

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-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	ungziped_file.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
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-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ungziped_file.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ungziped_file.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ungziped_file.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.

flow	ioc
36	api.ipify.org
37	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4924 set thread context of 4008	4924	ungziped_file.exe	94

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

T1053

pid	Process
4616	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4004	powershell.exe
4004	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4004	powershell.exe
Token: SeDebugPrivilege	4008	ungziped_file.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4924 wrote to memory of 4004	4924	ungziped_file.exe	90
PID 4924 wrote to memory of 4004	4924	ungziped_file.exe	90
PID 4924 wrote to memory of 4004	4924	ungziped_file.exe	90
PID 4924 wrote to memory of 4616	4924	ungziped_file.exe	92
PID 4924 wrote to memory of 4616	4924	ungziped_file.exe	92
PID 4924 wrote to memory of 4616	4924	ungziped_file.exe	92
PID 4924 wrote to memory of 4008	4924	ungziped_file.exe	94
PID 4924 wrote to memory of 4008	4924	ungziped_file.exe	94
PID 4924 wrote to memory of 4008	4924	ungziped_file.exe	94
PID 4924 wrote to memory of 4008	4924	ungziped_file.exe	94
PID 4924 wrote to memory of 4008	4924	ungziped_file.exe	94
PID 4924 wrote to memory of 4008	4924	ungziped_file.exe	94
PID 4924 wrote to memory of 4008	4924	ungziped_file.exe	94
PID 4924 wrote to memory of 4008	4924	ungziped_file.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ungziped_file.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ungziped_file.exe

C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe
"C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4924
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TxYDgY.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4004
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TxYDgY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2FDA.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4616
- C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe
  "C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

3

T1081

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\ungziped_file.exe.log

Filesize
1KB

MD5
b7b9acb869ccc7f7ecb5304ec0384dee

SHA1
6a90751c95817903ee833d59a0abbef425a613b3

SHA256
8cb00a15cd942a1861c573d86d6fb430512c8e2f80f6349f48b16b8709ca7aa4

SHA512
7bec881ac5f59ac26f1be1e7e26d63f040c06369de10c1c246e531a4395d27c335d9acc647ecdedb48ed37bdc2dc405a4cfc11762e1c00659a49be259eaf8764

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tjydms0m.ay0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2FDA.tmp

Filesize
1KB

MD5
6fd1ffd9d464d896a23b4b67025df0bf

SHA1
0abae40e26565a84179c75ba103d1995652c872f

SHA256
b1719aeaa716e1571e32dc3d0e93bf682512aef50ee98e61e58eb2f35de5bbe8

SHA512
e5bacf8b2e036610681d111e90e693750e3714248a215e8ab34183564f1c33bbf79e79b8b52de1fe167b5530b97b4b905abe3626771834c4e027fcc1bfa2a9bf

Download Submit
memory/4004-182-0x00000000071E0000-0x00000000071EA000-memory.dmp

Filesize
40KB

Download
memory/4004-180-0x00000000077B0000-0x0000000007E2A000-memory.dmp

Filesize
6.5MB

Download
memory/4004-188-0x00000000074A0000-0x00000000074A8000-memory.dmp

Filesize
32KB

Download
memory/4004-187-0x00000000074B0000-0x00000000074CA000-memory.dmp

Filesize
104KB

Download
memory/4004-144-0x0000000000D20000-0x0000000000D56000-memory.dmp

Filesize
216KB

Download
memory/4004-186-0x00000000073B0000-0x00000000073BE000-memory.dmp

Filesize
56KB

Download
memory/4004-146-0x0000000005390000-0x00000000059B8000-memory.dmp

Filesize
6.2MB

Download
memory/4004-184-0x00000000073F0000-0x0000000007486000-memory.dmp

Filesize
600KB

Download
memory/4004-166-0x0000000006E30000-0x0000000006E62000-memory.dmp

Filesize
200KB

Download
memory/4004-181-0x0000000007170000-0x000000000718A000-memory.dmp

Filesize
104KB

Download
memory/4004-149-0x0000000004D50000-0x0000000004D60000-memory.dmp

Filesize
64KB

Download
memory/4004-152-0x00000000050A0000-0x00000000050C2000-memory.dmp

Filesize
136KB

Download
memory/4004-159-0x0000000005170000-0x00000000051D6000-memory.dmp

Filesize
408KB

Download
memory/4004-179-0x000000007F820000-0x000000007F830000-memory.dmp

Filesize
64KB

Download
memory/4004-178-0x0000000004D50000-0x0000000004D60000-memory.dmp

Filesize
64KB

Download
memory/4004-164-0x0000000005E60000-0x0000000005E7E000-memory.dmp

Filesize
120KB

Download
memory/4004-148-0x0000000004D50000-0x0000000004D60000-memory.dmp

Filesize
64KB

Download
memory/4004-177-0x0000000006420000-0x000000000643E000-memory.dmp

Filesize
120KB

Download
memory/4004-167-0x0000000070080000-0x00000000700CC000-memory.dmp

Filesize
304KB

Download
memory/4008-165-0x0000000005690000-0x00000000056A0000-memory.dmp

Filesize
64KB

Download
memory/4008-191-0x0000000005690000-0x00000000056A0000-memory.dmp

Filesize
64KB

Download
memory/4008-183-0x0000000007210000-0x0000000007260000-memory.dmp

Filesize
320KB

Download
memory/4008-153-0x0000000005590000-0x00000000055F6000-memory.dmp

Filesize
408KB

Download
memory/4008-147-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4008-185-0x0000000007430000-0x00000000075F2000-memory.dmp

Filesize
1.8MB

Download
memory/4924-138-0x00000000051D0000-0x00000000051E0000-memory.dmp

Filesize
64KB

Download
memory/4924-136-0x00000000051B0000-0x00000000051BA000-memory.dmp

Filesize
40KB

Download
memory/4924-135-0x0000000004FC0000-0x0000000005052000-memory.dmp

Filesize
584KB

Download
memory/4924-133-0x0000000000570000-0x0000000000636000-memory.dmp

Filesize
792KB

Download
memory/4924-139-0x0000000008370000-0x000000000840C000-memory.dmp

Filesize
624KB

Download
memory/4924-134-0x0000000005660000-0x0000000005C04000-memory.dmp

Filesize
5.6MB

Download
memory/4924-137-0x00000000051D0000-0x00000000051E0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads