agenttesla | a064d4e5e3d00ac866cbdd8aedc407aaeb62ec1cc68885a36ef6ec71375edc68

Analysis

max time kernel
86s
max time network
65s
platform
windows10_x64
resource
win10
submitted
07/09/2020, 13:58

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General

Target
1Fv8sEStAMqUGXR.exe
Size 669KB
Sample200907-pp6tr66t1e
SHA256 a064d4e5e3d00ac866cbdd8aedc407aaeb62ec1cc68885a36ef6ec71375edc68
MD5 cdb45480dc75e44b9612a5de190d91df
SHA1 042789bb43b8b6a2d963007b83a9dbca671e5867
SHA512 bc91100cbf03aed9561456748465740bd839c3c8d05c627282db705331ca49d6876e00a9f111c28ccfdd930f73d23054576169ae32d56e704acd146b56974c4b
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/3512-12-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral2/memory/3512-13-0x000000000046146E-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\SystemBiosVersion	1Fv8sEStAMqUGXR.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1Fv8sEStAMqUGXR.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	1Fv8sEStAMqUGXR.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	1Fv8sEStAMqUGXR.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2784 set thread context of 3512	2784	1Fv8sEStAMqUGXR.exe	77

Drops file in Windows directory 1 IoCs

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

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
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
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 = 62271d6b1e85d601	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2784	1Fv8sEStAMqUGXR.exe
2784	1Fv8sEStAMqUGXR.exe
2784	1Fv8sEStAMqUGXR.exe
3512	RegSvcs.exe
3512	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	396	svchost.exe
Token: SeCreatePagefilePrivilege	396	svchost.exe
Token: SeDebugPrivilege	2784	1Fv8sEStAMqUGXR.exe
Token: SeDebugPrivilege	3512	RegSvcs.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 3512	2784	1Fv8sEStAMqUGXR.exe	77
PID 2784 wrote to memory of 3512	2784	1Fv8sEStAMqUGXR.exe	77
PID 2784 wrote to memory of 3512	2784	1Fv8sEStAMqUGXR.exe	77
PID 2784 wrote to memory of 3512	2784	1Fv8sEStAMqUGXR.exe	77
PID 2784 wrote to memory of 3512	2784	1Fv8sEStAMqUGXR.exe	77
PID 2784 wrote to memory of 3512	2784	1Fv8sEStAMqUGXR.exe	77
PID 2784 wrote to memory of 3512	2784	1Fv8sEStAMqUGXR.exe	77
PID 2784 wrote to memory of 3512	2784	1Fv8sEStAMqUGXR.exe	77

C:\Users\Admin\AppData\Local\Temp\1Fv8sEStAMqUGXR.exe
"C:\Users\Admin\AppData\Local\Temp\1Fv8sEStAMqUGXR.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:2784
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3512

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:396

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

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

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Downloads

memory/2784-0-0x0000000073D70000-0x000000007445E000-memory.dmp

Download

memory/2784-1-0x0000000000170000-0x0000000000171000-memory.dmp

Download

memory/2784-3-0x0000000004F50000-0x0000000004F51000-memory.dmp

Download

memory/2784-4-0x0000000004AF0000-0x0000000004AF1000-memory.dmp

Download

memory/2784-5-0x0000000004A60000-0x0000000004A61000-memory.dmp

Download

memory/2784-6-0x0000000004C00000-0x0000000004C03000-memory.dmp

Download

memory/2784-7-0x0000000007FE0000-0x0000000007FE1000-memory.dmp

Download

memory/2784-8-0x0000000008430000-0x00000000084A5000-memory.dmp

Download

memory/2784-9-0x00000000085A0000-0x00000000085A1000-memory.dmp

Download

memory/2784-10-0x000000000AD60000-0x000000000ADDC000-memory.dmp

Download

memory/2784-11-0x000000000E150000-0x000000000E151000-memory.dmp

Download

memory/3512-12-0x0000000000400000-0x0000000000466000-memory.dmp

Download

memory/3512-14-0x0000000073D70000-0x000000007445E000-memory.dmp

Download

memory/3512-19-0x0000000004A40000-0x0000000004A41000-memory.dmp

Download