agenttesla | b8378f3853a3fbb5a5e7cdd2fd81ac767f8798ef68951b75adb1fa6c13a34cf4

Analysis

max time kernel
120s
max time network
110s
platform
windows10_x64
resource
win10v200722
submitted
09/09/2020, 06:02

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General

Target
MV MOUNT AUSTIN.exe
Size 1.0MB
Sample200909-msdx7gcgvs
SHA256 b8378f3853a3fbb5a5e7cdd2fd81ac767f8798ef68951b75adb1fa6c13a34cf4
MD5 87f50fca79852562daf428fd14324f4e
SHA1 ccfb27760ec2376f68b6c7b5da07de933af6e76b
SHA512 e850cb88b9886db743b8e0004ce39195d6775d7eefeea1ca0c1e20efc72a1cbc5b09ded3b2f0a52f9706892a199c0f6e42bd3575c25fedc7760307fcbd4c1b42
MD5 SHA1 SHA512

Score

10^/10

keylogger stealer spyware trojan agenttesla persistence

Malware Config

Extracted

Credentials

Protocol
smtp
Host
mail.maihyundai.com
Port
587
Username
[email protected]
Password
isla44332211

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/3648-19-0x0000000000400000-0x0000000000466000-memory.dmp	agent_tesla
behavioral2/memory/3648-19-0x0000000000400000-0x0000000000466000-memory.dmp	agent_tesla
behavioral2/memory/3648-20-0x0000000000460D4E-mapping.dmp	agent_tesla

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1400429095-533421673-2598934218-1000\Software\Microsoft\Windows\CurrentVersion\Run\DsWhv = "C:\\Users\\Admin\\AppData\\Roaming\\DsWhv\\DsWhv.exe"	MV MOUNT AUSTIN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 60 set thread context of 3648	60	MV MOUNT AUSTIN.exe	76

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
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 = 82f9e6037f86d601	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 2 IoCs

pid	Process
3648	MV MOUNT AUSTIN.exe
3648	MV MOUNT AUSTIN.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	668	svchost.exe
Token: SeCreatePagefilePrivilege	668	svchost.exe
Token: SeDebugPrivilege	60	MV MOUNT AUSTIN.exe
Token: SeDebugPrivilege	3648	MV MOUNT AUSTIN.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 60 wrote to memory of 3648	60	MV MOUNT AUSTIN.exe	76
PID 60 wrote to memory of 3648	60	MV MOUNT AUSTIN.exe	76
PID 60 wrote to memory of 3648	60	MV MOUNT AUSTIN.exe	76
PID 60 wrote to memory of 3648	60	MV MOUNT AUSTIN.exe	76
PID 60 wrote to memory of 3648	60	MV MOUNT AUSTIN.exe	76
PID 60 wrote to memory of 3648	60	MV MOUNT AUSTIN.exe	76
PID 60 wrote to memory of 3648	60	MV MOUNT AUSTIN.exe	76
PID 60 wrote to memory of 3648	60	MV MOUNT AUSTIN.exe	76

C:\Users\Admin\AppData\Local\Temp\MV MOUNT AUSTIN.exe
"C:\Users\Admin\AppData\Local\Temp\MV MOUNT AUSTIN.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:60
- C:\Users\Admin\AppData\Local\Temp\MV MOUNT AUSTIN.exe
  "C:\Users\Admin\AppData\Local\Temp\MV MOUNT AUSTIN.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3648

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:668

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/60-13-0x0000000004E70000-0x0000000004E71000-memory.dmp

Download

memory/60-17-0x0000000000670000-0x0000000000672000-memory.dmp

Download

memory/60-4-0x000000000A090000-0x000000000A091000-memory.dmp

Download

memory/60-5-0x000000000A630000-0x000000000A631000-memory.dmp

Download

memory/60-8-0x0000000004D10000-0x0000000004D11000-memory.dmp

Download

memory/60-11-0x0000000004C70000-0x0000000004C72000-memory.dmp

Download

memory/60-12-0x0000000000B30000-0x0000000000B31000-memory.dmp

Download

memory/60-0-0x0000000073AF0000-0x00000000741DE000-memory.dmp

Download

memory/60-3-0x0000000004980000-0x0000000004A15000-memory.dmp

Download

memory/60-15-0x0000000002500000-0x0000000002510000-memory.dmp

Download

memory/60-16-0x0000000005190000-0x0000000005210000-memory.dmp

Download

memory/60-18-0x0000000005210000-0x0000000005274000-memory.dmp

Download

memory/60-1-0x0000000000060000-0x0000000000061000-memory.dmp

Download

memory/3648-19-0x0000000000400000-0x0000000000466000-memory.dmp

Download

memory/3648-22-0x0000000073AF0000-0x00000000741DE000-memory.dmp

Download

memory/3648-27-0x0000000005290000-0x0000000005291000-memory.dmp

Download

memory/3648-28-0x0000000005DF0000-0x0000000005DF1000-memory.dmp

Download