agenttesla | d5a6ab788954e96a9c2be8f4d466e9a4b5fb7d871849d28260e03cd05e9e9ccb

Analysis

max time kernel
108s
max time network
111s
platform
windows10_x64
resource
win10v200722
submitted
28/08/2020, 21:24

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
bill.txt.exe
Size 665KB
Sample200828-bsd1fssfj2
SHA256 d5a6ab788954e96a9c2be8f4d466e9a4b5fb7d871849d28260e03cd05e9e9ccb
MD5 17eb6da6003aef6d5b1d0d7268e945b1
SHA1 71bf602fb4c3899c7a9d7b7b8e4406b032fa3453
SHA512 07ce8f49083f459c6fb5359f0452ed35780dd3b8eac419201bff0a111ad11adf655fb37bae9904a0a340a67178fd31aaf73a20d8078bafa510cd6e9f1e209998
MD5 SHA1 SHA512

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.privateemail.com
Port
587
Username
[email protected]
Password
GODOFSURELOGS123

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/3804-13-0x0000000000460C1E-mapping.dmp	family_agenttesla
behavioral2/memory/3804-12-0x0000000000400000-0x0000000000466000-memory.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	bill.txt.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	bill.txt.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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	bill.txt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	bill.txt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3840 set thread context of 3804	3840	bill.txt.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
3000	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 = 3691b2d3927dd601	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 6 IoCs

pid	Process
3840	bill.txt.exe
3840	bill.txt.exe
3840	bill.txt.exe
3840	bill.txt.exe
3804	RegSvcs.exe
3804	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	412	svchost.exe
Token: SeCreatePagefilePrivilege	412	svchost.exe
Token: SeDebugPrivilege	3840	bill.txt.exe
Token: SeDebugPrivilege	3804	RegSvcs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3804	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3840 wrote to memory of 3000	3840	bill.txt.exe	76
PID 3840 wrote to memory of 3000	3840	bill.txt.exe	76
PID 3840 wrote to memory of 3000	3840	bill.txt.exe	76
PID 3840 wrote to memory of 3804	3840	bill.txt.exe	78
PID 3840 wrote to memory of 3804	3840	bill.txt.exe	78
PID 3840 wrote to memory of 3804	3840	bill.txt.exe	78
PID 3840 wrote to memory of 3804	3840	bill.txt.exe	78
PID 3840 wrote to memory of 3804	3840	bill.txt.exe	78
PID 3840 wrote to memory of 3804	3840	bill.txt.exe	78
PID 3840 wrote to memory of 3804	3840	bill.txt.exe	78
PID 3840 wrote to memory of 3804	3840	bill.txt.exe	78

C:\Users\Admin\AppData\Local\Temp\bill.txt.exe
"C:\Users\Admin\AppData\Local\Temp\bill.txt.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:3840
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xPLkzR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC9A.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3000
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3804

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:412

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/3804-22-0x0000000006750000-0x0000000006751000-memory.dmp

Download

memory/3804-19-0x0000000005660000-0x0000000005661000-memory.dmp

Download

memory/3804-17-0x0000000005BA0000-0x0000000005BA1000-memory.dmp

Download

memory/3804-14-0x0000000073DA0000-0x000000007448E000-memory.dmp

Download

memory/3804-12-0x0000000000400000-0x0000000000466000-memory.dmp

Download

memory/3840-5-0x0000000005910000-0x0000000005911000-memory.dmp

Download

memory/3840-9-0x0000000001200000-0x0000000001201000-memory.dmp

Download

memory/3840-8-0x000000000BBA0000-0x000000000BBA1000-memory.dmp

Download

memory/3840-7-0x00000000082C0000-0x0000000008344000-memory.dmp

Download

memory/3840-6-0x0000000005C60000-0x0000000005CEB000-memory.dmp

Download

memory/3840-0-0x0000000073DA0000-0x000000007448E000-memory.dmp

Download

memory/3840-4-0x0000000005320000-0x0000000005321000-memory.dmp

Download

memory/3840-3-0x0000000005110000-0x0000000005117000-memory.dmp

Download

memory/3840-1-0x0000000000940000-0x0000000000941000-memory.dmp

Download