agenttesla | a7c404c180deb431bd646e805be187aa4d65c1c2eb6d38c9c288af96d21d2eb8

Analysis

max time kernel
126s
max time network
130s
platform
windows10_x64
resource
win10v200722
submitted
07/09/2020, 14:07

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
YhhVZ4JTSCw0YiE.exe
Size 925KB
Sample200907-2e9xtg4vxn
SHA256 a7c404c180deb431bd646e805be187aa4d65c1c2eb6d38c9c288af96d21d2eb8
MD5 0c0ef79bf9908fadb24e3e101ca415c0
SHA1 0849a0f6585b38db7dabdd1b09fa4447d4771566
SHA512 fdcf2672f0567766e4a6e480e776fb00f510b94ef47f27b959108a80fb76e92a3311a4a5f4ed14af28e81ec188f2a99d7f9dd48faf1727e0572c8525685e98b8
MD5 SHA1 SHA512

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

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 2 IoCs

resource	yara_rule
behavioral2/memory/972-14-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral2/memory/972-15-0x000000000046146E-mapping.dmp	family_agenttesla

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\VideoBiosVersion	YhhVZ4JTSCw0YiE.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	YhhVZ4JTSCw0YiE.exe

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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	YhhVZ4JTSCw0YiE.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	YhhVZ4JTSCw0YiE.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3888 set thread context of 972	3888	YhhVZ4JTSCw0YiE.exe	78

Drops file in Windows directory 1 IoCs

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

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
3120	schtasks.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\windows\CurrentVersion\Internet Settings\Connections	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 = 96f0ef6f3085d601	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 5 IoCs

pid	Process
3888	YhhVZ4JTSCw0YiE.exe
3888	YhhVZ4JTSCw0YiE.exe
3888	YhhVZ4JTSCw0YiE.exe
972	RegSvcs.exe
972	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2196	svchost.exe
Token: SeCreatePagefilePrivilege	2196	svchost.exe
Token: SeDebugPrivilege	3888	YhhVZ4JTSCw0YiE.exe
Token: SeDebugPrivilege	972	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3888 wrote to memory of 3120	3888	YhhVZ4JTSCw0YiE.exe	76
PID 3888 wrote to memory of 3120	3888	YhhVZ4JTSCw0YiE.exe	76
PID 3888 wrote to memory of 3120	3888	YhhVZ4JTSCw0YiE.exe	76
PID 3888 wrote to memory of 972	3888	YhhVZ4JTSCw0YiE.exe	78
PID 3888 wrote to memory of 972	3888	YhhVZ4JTSCw0YiE.exe	78
PID 3888 wrote to memory of 972	3888	YhhVZ4JTSCw0YiE.exe	78
PID 3888 wrote to memory of 972	3888	YhhVZ4JTSCw0YiE.exe	78
PID 3888 wrote to memory of 972	3888	YhhVZ4JTSCw0YiE.exe	78
PID 3888 wrote to memory of 972	3888	YhhVZ4JTSCw0YiE.exe	78
PID 3888 wrote to memory of 972	3888	YhhVZ4JTSCw0YiE.exe	78
PID 3888 wrote to memory of 972	3888	YhhVZ4JTSCw0YiE.exe	78

C:\Users\Admin\AppData\Local\Temp\YhhVZ4JTSCw0YiE.exe
"C:\Users\Admin\AppData\Local\Temp\YhhVZ4JTSCw0YiE.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:3888
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SvVlEwAzYkSSGh" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF969.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3120
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:972

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:2196

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/972-21-0x00000000055C0000-0x00000000055C1000-memory.dmp

Download

memory/972-16-0x0000000074000000-0x00000000746EE000-memory.dmp

Download

memory/972-14-0x0000000000400000-0x0000000000466000-memory.dmp

Download

memory/3888-5-0x0000000006F70000-0x0000000006F71000-memory.dmp

Download

memory/3888-8-0x0000000000990000-0x0000000000A07000-memory.dmp

Download

memory/3888-9-0x000000000A990000-0x000000000A991000-memory.dmp

Download

memory/3888-10-0x000000000A880000-0x000000000A8F8000-memory.dmp

Download

memory/3888-11-0x0000000004ED0000-0x0000000004ED1000-memory.dmp

Download

memory/3888-7-0x000000000A4E0000-0x000000000A4E1000-memory.dmp

Download

memory/3888-6-0x00000000073F0000-0x00000000073F3000-memory.dmp

Download

memory/3888-0-0x0000000074000000-0x00000000746EE000-memory.dmp

Download

memory/3888-4-0x0000000006FF0000-0x0000000006FF1000-memory.dmp

Download

memory/3888-3-0x0000000007450000-0x0000000007451000-memory.dmp

Download

memory/3888-1-0x0000000000180000-0x0000000000181000-memory.dmp

Download