agenttesla | c96dc3cda588a657072da54ca993bd2b714dc09575670808c25e03f2c64cfc32

General

Target
Invoice.exe
Size 474KB
Sample220413-17xpysfhfm
SHA256 c96dc3cda588a657072da54ca993bd2b714dc09575670808c25e03f2c64cfc32
MD5 774366a51382702fb4bd214556480426
SHA1 d361f44d1b64fb89e925818a4f420892aba3c491
SHA512 73903037f8c82d98b6b5f852cd3aafdcab718fad5a229bdc4e47320654b29a011f8da68738cf4141e107556476aabb00de3ea927fef8cd683f57fc366a15a632
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger persistence spyware stealer suricata trojan

Malware Config

Extracted

Credentials

Protocol
smtp
Host
mail.atifnazar.com
Port
587
Username
[email protected]
Password
anazar@^@***@

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.atifnazar.com
Port
587
Username
[email protected]
Password
anazar@^@***@
Email to
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata

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-1-5-21-2403053463-4052593947-3703345493-1000\Control Panel\International\Geo\Nation	Invoice.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\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

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wZzDLLs = "C:\\Users\\Admin\\AppData\\Roaming\\wZzDLLs\\wZzDLLs.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5076 set thread context of 4512	5076	Invoice.exe	94

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
3552	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
5076	Invoice.exe
4512	RegSvcs.exe
4512	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5076	Invoice.exe
Token: SeDebugPrivilege	4512	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5076 wrote to memory of 3552	5076	Invoice.exe	91
PID 5076 wrote to memory of 3552	5076	Invoice.exe	91
PID 5076 wrote to memory of 3552	5076	Invoice.exe	91
PID 5076 wrote to memory of 4512	5076	Invoice.exe	94
PID 5076 wrote to memory of 4512	5076	Invoice.exe	94
PID 5076 wrote to memory of 4512	5076	Invoice.exe	94
PID 5076 wrote to memory of 4512	5076	Invoice.exe	94
PID 5076 wrote to memory of 4512	5076	Invoice.exe	94
PID 5076 wrote to memory of 4512	5076	Invoice.exe	94
PID 5076 wrote to memory of 4512	5076	Invoice.exe	94
PID 5076 wrote to memory of 4512	5076	Invoice.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5076
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FEKyKzaPD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD1F3.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3552
- 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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4512

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

tmpD1F3.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpD1F3.tmp
Size 1KB
SHA256 d3087cec5de8cdb205a8aa5b26761712ce440cbd4fb57a2ef0d4c18097b19517
MD5 03888313726462bcea416e511a762114
SHA1 2ac436a6bf0d4c4cdf79471434fb081da65710ee
SHA512 9d575edfccdfaa9784af61bae8c5f1cfd2918d25d6de6cb4d98932a50f84a1f7cd16533cf55f90aa509567a3c88168fe31ee6eca1715f408290c492c644876ff
MD5 SHA1 SHA512

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memory/4512-142-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/4512-143-0x00000000065F0000-0x0000000006656000-memory.dmp

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memory/4512-144-0x0000000006B50000-0x0000000006BA0000-memory.dmp

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memory/5076-134-0x0000000000DC0000-0x0000000000E3C000-memory.dmp

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memory/5076-135-0x0000000005F10000-0x00000000064B4000-memory.dmp

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memory/5076-136-0x0000000005840000-0x00000000058D2000-memory.dmp

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memory/5076-137-0x0000000005960000-0x00000000059FC000-memory.dmp

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memory/5076-138-0x00000000057D0000-0x00000000057DA000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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