agenttesla | 096e367392216bef16b7bb081ec13edbf71a774b5f8de11fe22a15fed254f8c9

General

Target
VQiCue7HEz6VM3g.exe
Size 593KB
Sample200831-14bfct83d6
SHA256 096e367392216bef16b7bb081ec13edbf71a774b5f8de11fe22a15fed254f8c9
MD5 a99ce8dca56f302d6df6c8abcfc707bc
SHA1 57f84fc433737662a1edaf8675f3f28038347126
SHA512 e5796de19bd9c58c3c49794b1240f16af777308a47333ce8ec41e44ce28f7517c660a70e98f63c21ad7d5c2fb6a10eafb71c1172bea493cbcfe780fa432a8867
MD5 SHA1 SHA512

Score

10^/10

keylogger stealer evasion spyware trojan agenttesla

Malware Config

Extracted

Credentials

Protocol
smtp
Host
smtp.yandex.com
Port
587
Username
[email protected]
Password
kissme4eva

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/2248-14-0x0000000000400000-0x0000000000466000-memory.dmp	agent_tesla
behavioral2/memory/2248-14-0x0000000000400000-0x0000000000466000-memory.dmp	agent_tesla
behavioral2/memory/2248-15-0x000000000046146E-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	VQiCue7HEz6VM3g.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	VQiCue7HEz6VM3g.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	VQiCue7HEz6VM3g.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	VQiCue7HEz6VM3g.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3700 set thread context of 2248	3700	VQiCue7HEz6VM3g.exe	79

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
1816	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	svchost.exe
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 = aab141e5827fd601	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

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
3700	VQiCue7HEz6VM3g.exe
3700	VQiCue7HEz6VM3g.exe
3700	VQiCue7HEz6VM3g.exe
2248	VQiCue7HEz6VM3g.exe
2248	VQiCue7HEz6VM3g.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2180	svchost.exe
Token: SeCreatePagefilePrivilege	2180	svchost.exe
Token: SeDebugPrivilege	3700	VQiCue7HEz6VM3g.exe
Token: SeDebugPrivilege	2248	VQiCue7HEz6VM3g.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3700 wrote to memory of 1816	3700	VQiCue7HEz6VM3g.exe	77
PID 3700 wrote to memory of 1816	3700	VQiCue7HEz6VM3g.exe	77
PID 3700 wrote to memory of 1816	3700	VQiCue7HEz6VM3g.exe	77
PID 3700 wrote to memory of 2248	3700	VQiCue7HEz6VM3g.exe	79
PID 3700 wrote to memory of 2248	3700	VQiCue7HEz6VM3g.exe	79
PID 3700 wrote to memory of 2248	3700	VQiCue7HEz6VM3g.exe	79
PID 3700 wrote to memory of 2248	3700	VQiCue7HEz6VM3g.exe	79
PID 3700 wrote to memory of 2248	3700	VQiCue7HEz6VM3g.exe	79
PID 3700 wrote to memory of 2248	3700	VQiCue7HEz6VM3g.exe	79
PID 3700 wrote to memory of 2248	3700	VQiCue7HEz6VM3g.exe	79
PID 3700 wrote to memory of 2248	3700	VQiCue7HEz6VM3g.exe	79

C:\Users\Admin\AppData\Local\Temp\VQiCue7HEz6VM3g.exe
"C:\Users\Admin\AppData\Local\Temp\VQiCue7HEz6VM3g.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:3700
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qRkTaxBqiU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6D94.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1816
- C:\Users\Admin\AppData\Local\Temp\VQiCue7HEz6VM3g.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2248

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:2180