agenttesla | eec5b8a3e9851cc187cee8b0fedf3945b1fed61b8f5c05d02622de84777edc1c

General

Target
Swift Copy.exe
Size 786KB
Sample220419-nsvwlaechk
SHA256 e9bd3df24e3beacf41ddecf97a34c5cfdd696ad9d58e3fbe79dbea8f88487ad5
MD5 ed6b17793a48cce9afdac74213fbac7a
SHA1 a75f16d0f9aa9e4229f4975be1920677a4fa175c
SHA512 3266302fd7edb80eb92420260170405ad3580bd9b304a70a73d3276fe465789270421ff69836f87c6873b9c775ef266f6450c34d80d59d8c7cd2fda430038fc8
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger persistence spyware stealer suricata trojan

Malware Config

Extracted

Credentials

Protocol
smtp
Host
webmail.mdist.us
Port
587
Username
[email protected]
Password
Jobs#4321

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
webmail.mdist.us
Port
587
Username
[email protected]
Password
Jobs#4321

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-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	Swift Copy.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\tbKkO = "C:\\Users\\Admin\\AppData\\Roaming\\tbKkO\\tbKkO.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1336 set thread context of 956	1336	Swift Copy.exe	83

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
3464	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1336	Swift Copy.exe
1336	Swift Copy.exe
1336	Swift Copy.exe
956	RegSvcs.exe
956	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1336	Swift Copy.exe
Token: SeDebugPrivilege	956	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 3464	1336	Swift Copy.exe	80
PID 1336 wrote to memory of 3464	1336	Swift Copy.exe	80
PID 1336 wrote to memory of 3464	1336	Swift Copy.exe	80
PID 1336 wrote to memory of 1420	1336	Swift Copy.exe	82
PID 1336 wrote to memory of 1420	1336	Swift Copy.exe	82
PID 1336 wrote to memory of 1420	1336	Swift Copy.exe	82
PID 1336 wrote to memory of 956	1336	Swift Copy.exe	83
PID 1336 wrote to memory of 956	1336	Swift Copy.exe	83
PID 1336 wrote to memory of 956	1336	Swift Copy.exe	83
PID 1336 wrote to memory of 956	1336	Swift Copy.exe	83
PID 1336 wrote to memory of 956	1336	Swift Copy.exe	83
PID 1336 wrote to memory of 956	1336	Swift Copy.exe	83
PID 1336 wrote to memory of 956	1336	Swift Copy.exe	83
PID 1336 wrote to memory of 956	1336	Swift Copy.exe	83

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Swift Copy.exe
"C:\Users\Admin\AppData\Local\Temp\Swift Copy.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YEyfAKXUWTdI" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDE0C.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3464
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  PID:1420
- 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:956

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

tmpDE0C.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpDE0C.tmp
Size 1KB
SHA256 6756a1148d708ca92f9974ecc4ee6f270a0d3ddaae700428d013f6fbeb26ce84
MD5 7c62595a8c94131a6c7067b9188ad29b
SHA1 c7332053405f2bd1236c02d32cf427fa82872e27
SHA512 928dbb874021c391f7e6970eb7f7d65a1dc0ab78d3660bf07295bd3310419cacfb882b36ad12cb628b297c81379f12391e70f5b92c31397ea272e79e857e3303
MD5 SHA1 SHA512

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memory/956-139-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/956-140-0x0000000006620000-0x0000000006686000-memory.dmp

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memory/956-141-0x0000000006CC0000-0x0000000006D10000-memory.dmp

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memory/1336-130-0x0000000000A00000-0x0000000000ACA000-memory.dmp

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memory/1336-131-0x0000000005A50000-0x0000000005FF4000-memory.dmp

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memory/1336-132-0x00000000054A0000-0x0000000005532000-memory.dmp

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memory/1336-133-0x0000000005540000-0x00000000055DC000-memory.dmp

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memory/1336-134-0x0000000005460000-0x000000000546A000-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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