agenttesla | 810c07ceeef94fff269ad3c0891d5c329f39733b7cf49b1dc23e725182999593

Analysis

max time kernel
153s
max time network
137s
platform
windows7_x64
resource
win7-en-20211208
submitted
31/01/2022, 04:30

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General

Target
DHL Delivery Invoice.pdf.exe
Size 824KB
Sample220131-e4t9rsehgq
SHA256 810c07ceeef94fff269ad3c0891d5c329f39733b7cf49b1dc23e725182999593
MD5 45a84478ed22c62b6c583e632f28e7f1
SHA1 efcee48025bece73deeb6224abfadd0f6b6eee38
SHA512 50abfa10ce12bdb5f0a4fa7b7bb7428bb5c4f7098f6bed51fa8224812806792bdb8f1b403c29c7dc122b143dd2a85447897cbf21de5a87416ef4e5b608e6e575
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.yandex.com
Port
587
Username
[email protected]
Password
marcellinus360

Signatures

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

AgentTesla Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1788-65-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1788-66-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1788-67-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1788-68-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1688 set thread context of 1788	1688	DHL Delivery Invoice.pdf.exe	33

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
1988	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
596	powershell.exe
1788	RegSvcs.exe
1788	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	596	powershell.exe
Token: SeDebugPrivilege	1788	RegSvcs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1788	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 596	1688	DHL Delivery Invoice.pdf.exe	29
PID 1688 wrote to memory of 596	1688	DHL Delivery Invoice.pdf.exe	29
PID 1688 wrote to memory of 596	1688	DHL Delivery Invoice.pdf.exe	29
PID 1688 wrote to memory of 596	1688	DHL Delivery Invoice.pdf.exe	29
PID 1688 wrote to memory of 1988	1688	DHL Delivery Invoice.pdf.exe	31
PID 1688 wrote to memory of 1988	1688	DHL Delivery Invoice.pdf.exe	31
PID 1688 wrote to memory of 1988	1688	DHL Delivery Invoice.pdf.exe	31
PID 1688 wrote to memory of 1988	1688	DHL Delivery Invoice.pdf.exe	31
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33
PID 1688 wrote to memory of 1788	1688	DHL Delivery Invoice.pdf.exe	33

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\DHL Delivery Invoice.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\DHL Delivery Invoice.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zyJxEkzLAniHR.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:596
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zyJxEkzLAniHR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDE10.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1988
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1788

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

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/596-69-0x0000000002070000-0x0000000002071000-memory.dmp

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memory/596-71-0x0000000002072000-0x0000000002074000-memory.dmp

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memory/596-70-0x0000000002071000-0x0000000002072000-memory.dmp

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memory/1688-55-0x0000000076421000-0x0000000076423000-memory.dmp

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memory/1688-56-0x0000000004590000-0x0000000004591000-memory.dmp

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memory/1688-57-0x0000000000610000-0x0000000000624000-memory.dmp

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memory/1688-58-0x0000000007750000-0x00000000077E6000-memory.dmp

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memory/1688-54-0x0000000000E00000-0x0000000000ED4000-memory.dmp

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memory/1788-65-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1788-67-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1788-66-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1788-68-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1788-64-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1788-63-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1788-72-0x0000000004AC0000-0x0000000004AC1000-memory.dmp

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memory/1788-74-0x0000000004AC1000-0x0000000004AC2000-memory.dmp

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