agenttesla | 636ed47033dc0066e0e169d4be9d01b56886b255cd5d351b481e35200f507b43

General

Target
SWIFT COPY.exe
Size 1.1MB
Sample200907-saw2982lys
SHA256 636ed47033dc0066e0e169d4be9d01b56886b255cd5d351b481e35200f507b43
MD5 0081a23e3bf2cfc8551ddf19c4d55f0a
SHA1 1eaa9a7da46042419630b9e24af663a84d72f8d3
SHA512 ee0ddebe10415bcebdd31e14974ed639b9c3ce4737fafeff1bfa6c820f4910eadcb4b56fa2c90a26bc5bcc06e2ea8b039f5b839438efab811da2dc9ac1631bf7
MD5 SHA1 SHA512

Score

10^/10

keylogger stealer spyware evasion trojan agenttesla

Malware Config

Extracted

Credentials

Protocol
smtp
Host
smtp.millndustries.com
Port
587
Username
[email protected]
Password
{zdog:g7S@R3

Signatures

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

AgentTesla Payload 3 IoCs

keylogger stealer

resource	yara_rule
behavioral2/memory/3112-6-0x0000000000400000-0x0000000000466000-memory.dmp	agent_tesla
behavioral2/memory/3112-6-0x0000000000400000-0x0000000000466000-memory.dmp	agent_tesla
behavioral2/memory/3112-7-0x0000000000460ACE-mapping.dmp	agent_tesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	SWIFT COPY.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	SWIFT COPY.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	SWIFT COPY.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	SWIFT COPY.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3056 set thread context of 3112	3056	SWIFT COPY.exe	80

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.exe

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
2748	schtasks.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = 809ac5411f85d601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3056	SWIFT COPY.exe
3112	SWIFT COPY.exe
3112	SWIFT COPY.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	196	svchost.exe
Token: SeCreatePagefilePrivilege	196	svchost.exe
Token: SeDebugPrivilege	3056	SWIFT COPY.exe
Token: SeDebugPrivilege	3112	SWIFT COPY.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3112	SWIFT COPY.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 2748	3056	SWIFT COPY.exe	78
PID 3056 wrote to memory of 2748	3056	SWIFT COPY.exe	78
PID 3056 wrote to memory of 2748	3056	SWIFT COPY.exe	78
PID 3056 wrote to memory of 3112	3056	SWIFT COPY.exe	80
PID 3056 wrote to memory of 3112	3056	SWIFT COPY.exe	80
PID 3056 wrote to memory of 3112	3056	SWIFT COPY.exe	80
PID 3056 wrote to memory of 3112	3056	SWIFT COPY.exe	80
PID 3056 wrote to memory of 3112	3056	SWIFT COPY.exe	80
PID 3056 wrote to memory of 3112	3056	SWIFT COPY.exe	80
PID 3056 wrote to memory of 3112	3056	SWIFT COPY.exe	80
PID 3056 wrote to memory of 3112	3056	SWIFT COPY.exe	80

C:\Users\Admin\AppData\Local\Temp\SWIFT COPY.exe
"C:\Users\Admin\AppData\Local\Temp\SWIFT COPY.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\evcPVGQXNFJnEF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDFA7.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2748
- C:\Users\Admin\AppData\Local\Temp\SWIFT COPY.exe
  "C:\Users\Admin\AppData\Local\Temp\SWIFT COPY.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3112

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:196

C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe
C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe
1⤵
PID:1432