agenttesla | 0f7fbfe6bfd65c275278c0e4d96932a5dd15dac0c6b72ebbb99caa5f2b64f5f8

General

Target

Overdue Account.exe
Size

1.1MB
MD5

cd8b7c72ba0756f8e6477259d399b960
SHA1

d3e9536cbe68699c134823f4730e9a388b403b3b
SHA256

e50738bd86a1d753a2ccf0e88cfca85fb58986ce16cb9db779e3cbb45e9a4c07
SHA512

0abb609b0d5d946ff7a1c884bc533cf764d92e706cca9438e10b45570af402b3e29defc70770b31a716b93676305fdec142cb0f15ac493a82d2cddaa544e5f46
SSDEEP

24576:KyBLjP6+b1EyCGcZV/zerKsAEUVTa9hJz7H:rP1MT/SujEQTKD7H

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.prcpl.com
Port:
587
Username:
[email protected]
Password:
jyotika@2015

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/1548-12-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegSvcs.exe

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	Overdue Account.exe

Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WCPCe = "C:\\Users\\Admin\\AppData\\Roaming\\WCPCe\\WCPCe.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1172 set thread context of 1548	1172	Overdue Account.exe	95

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Overdue Account.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5500	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1172	Overdue Account.exe
1172	Overdue Account.exe
1172	Overdue Account.exe
1172	Overdue Account.exe
1548	RegSvcs.exe
1548	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1172	Overdue Account.exe
Token: SeDebugPrivilege	1548	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1172 wrote to memory of 5500	1172	Overdue Account.exe	93
PID 1172 wrote to memory of 5500	1172	Overdue Account.exe	93
PID 1172 wrote to memory of 5500	1172	Overdue Account.exe	93
PID 1172 wrote to memory of 1548	1172	Overdue Account.exe	95
PID 1172 wrote to memory of 1548	1172	Overdue Account.exe	95
PID 1172 wrote to memory of 1548	1172	Overdue Account.exe	95
PID 1172 wrote to memory of 1548	1172	Overdue Account.exe	95
PID 1172 wrote to memory of 1548	1172	Overdue Account.exe	95
PID 1172 wrote to memory of 1548	1172	Overdue Account.exe	95
PID 1172 wrote to memory of 1548	1172	Overdue Account.exe	95
PID 1172 wrote to memory of 1548	1172	Overdue Account.exe	95

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Overdue Account.exe
"C:\Users\Admin\AppData\Local\Temp\Overdue Account.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1172
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jYbhQanutam" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7B08.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:5500
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7B08.tmp

Filesize
1KB

MD5
a2320dede62964cd47eb6bef4acb132b

SHA1
e07fb916dc2c44caebbdb9f78c0c6e18e072f986

SHA256
90fd6a3b433d04776a14f012e79c86d6f8da7173d4b0c871ce6b07820d05d3c0

SHA512
32d0ad1a848e80d5b54a924e369d575b8231ea5357fa2b1112a5ceeef375f9eff14be34f961e9c3f49d4996937ff4bda1fd29fe7b400438d36a8f0d4336f928a

Download Submit
memory/1172-15-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/1172-1-0x00000000000E0000-0x0000000000202000-memory.dmp

Filesize
1.1MB

Download
memory/1172-2-0x0000000004BA0000-0x0000000004C3C000-memory.dmp

Filesize
624KB

Download
memory/1172-3-0x00000000025A0000-0x00000000025B2000-memory.dmp

Filesize
72KB

Download
memory/1172-4-0x0000000004CE0000-0x0000000004D72000-memory.dmp

Filesize
584KB

Download
memory/1172-5-0x00000000746DE000-0x00000000746DF000-memory.dmp

Filesize
4KB

Download
memory/1172-6-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/1172-7-0x0000000005030000-0x00000000050DC000-memory.dmp

Filesize
688KB

Download
memory/1172-8-0x0000000007930000-0x00000000079E6000-memory.dmp

Filesize
728KB

Download
memory/1172-0-0x00000000746DE000-0x00000000746DF000-memory.dmp

Filesize
4KB

Download
memory/1548-12-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1548-14-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/1548-16-0x0000000005AE0000-0x0000000006084000-memory.dmp

Filesize
5.6MB

Download
memory/1548-17-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/1548-18-0x00000000054E0000-0x00000000054F8000-memory.dmp

Filesize
96KB

Download
memory/1548-19-0x0000000006090000-0x00000000060F6000-memory.dmp

Filesize
408KB

Download
memory/1548-21-0x00000000068C0000-0x0000000006910000-memory.dmp

Filesize
320KB

Download
memory/1548-23-0x00000000068B0000-0x00000000068BA000-memory.dmp

Filesize
40KB

Download
memory/1548-24-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/1548-25-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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