agenttesla | 24726ed81db62d790db5be500438ff2f2cb333ef1d381d080903f0ee29110637

Analysis

max time kernel
4294183s
max time network
139s
platform
windows7_x64
resource
win7-20220311-en
submitted
12/04/2022, 07:03

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General

Target
Swift Copy.pdf.exe
Size 1.3MB
Sample220412-hvb9dagccp
SHA256 f5cf5e1d41419e2e2283e3548eb60ea029fa7d24344f3af4536ba8b2363dafda
MD5 ef280962b243a60441b2e9197569857c
SHA1 17852ba8bbcf6d29b29b6d46eee714ba19dabe43
SHA512 8e8c37e2083b1922c4f221caebaf727382417c163792f85c91adb1d5f34cf8786776f22edaa01ee985263f89617db82409b4ef0e5558928ab0fc108953005bf3
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
Info#4321

Extracted

Family

agenttesla

Credentials

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\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-1-5-21-2199625441-3471261906-229485034-1000\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 628 set thread context of 1844	628	Swift Copy.pdf.exe	31

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
636	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1844	RegSvcs.exe
1844	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1844	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 636	628	Swift Copy.pdf.exe	29
PID 628 wrote to memory of 636	628	Swift Copy.pdf.exe	29
PID 628 wrote to memory of 636	628	Swift Copy.pdf.exe	29
PID 628 wrote to memory of 636	628	Swift Copy.pdf.exe	29
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31
PID 628 wrote to memory of 1844	628	Swift Copy.pdf.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Swift Copy.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Swift Copy.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:628
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\saSScFGOhTC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE698.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:636
- 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:1844

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

tmpE698.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpE698.tmp
Size 1KB
SHA256 340c0b3e1df3491bcf11b3ca55c39b5bae24a7be99175494904717de39b36282
MD5 cba3a0a603c6641d7fc996f019b6024c
SHA1 8ad6ee8cb0e889b9af3c608aae804ce4246db9a7
SHA512 45c66f5bcfa978eb27f6cc222a198978db59db32fcd6d7d9e8d8331e038f34b772fed05659b5b48e8f38580e4123ef4d9559bf30e52dbb11024481b9324c4a7e
MD5 SHA1 SHA512

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memory/628-54-0x0000000000010000-0x0000000000168000-memory.dmp

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memory/628-55-0x00000000007B0000-0x00000000007BA000-memory.dmp

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memory/628-56-0x0000000004D50000-0x0000000004DE2000-memory.dmp

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memory/628-57-0x0000000004CA0000-0x0000000004D10000-memory.dmp

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memory/1844-60-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1844-61-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1844-63-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1844-65-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1844-66-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1844-69-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1844-71-0x0000000000400000-0x000000000046E000-memory.dmp

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