agenttesla | 98be3ef42a4bbf286fb1be8b0837a24704f87f2d2ae3e84f380479c08d600b81

General

Target

tmp4vvsfrfw.exe
Size

3.2MB
MD5

b3cdc9e5d148f28c40fcb727100aab8c
SHA1

3361179695c8ffa760a1607339c8cd4b1e1b9780
SHA256

98be3ef42a4bbf286fb1be8b0837a24704f87f2d2ae3e84f380479c08d600b81
SHA512

ae57d3bd52c5ba642ce890ca715143e08f9aedc1ae28f67efa82d7a0d545c7f2bca61529fe66a45e5f1a72347ed169cba1718639a6768452bc1a7b9c6c77c5e7
SSDEEP

49152:fzBfc7Dk8mQmKHGcfDVu5Pc09JJtKzh8CLCs1+s2aGhfUo5S3I628:fzu1vMPKPLoT98I6L

Score

10^/10

agenttesla evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6902894171:AAF7F2wI9rfwYzH0AbQJ7rRjfVP2yL6ehww/

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1548.002

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

tmp4vvsfrfw.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" tmp4vvsfrfw.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	tmp4vvsfrfw.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

jsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\ubSLUM = "C:\\Users\\Admin\\AppData\\Roaming\\ubSLUM\\ubSLUM.exe"	jsc.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

tmp4vvsfrfw.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	tmp4vvsfrfw.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	tmp4vvsfrfw.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 api.ipify.org
5 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

tmp4vvsfrfw.exe

description pid process target process

PID 2020 set thread context of 2436 2020 tmp4vvsfrfw.exe jsc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exejsc.exe

pid process

2556 powershell.exe
2436 jsc.exe
2436 jsc.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

tmp4vvsfrfw.exepowershell.exejsc.exe

description pid process

Token: SeDebugPrivilege 2020 tmp4vvsfrfw.exe
Token: SeDebugPrivilege 2556 powershell.exe
Token: SeDebugPrivilege 2436 jsc.exe

flow	ioc
4	api.ipify.org
5	api.ipify.org

description	pid	process	target process
PID 2020 set thread context of 2436	2020	tmp4vvsfrfw.exe	jsc.exe

pid	process
2556	powershell.exe
2436	jsc.exe
2436	jsc.exe

description	pid	process
Token: SeDebugPrivilege	2020	tmp4vvsfrfw.exe
Token: SeDebugPrivilege	2556	powershell.exe
Token: SeDebugPrivilege	2436	jsc.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

tmp4vvsfrfw.exe

description	pid	process	target process
PID 2020 wrote to memory of 2556	2020	tmp4vvsfrfw.exe	powershell.exe
PID 2020 wrote to memory of 2556	2020	tmp4vvsfrfw.exe	powershell.exe
PID 2020 wrote to memory of 2556	2020	tmp4vvsfrfw.exe	powershell.exe
PID 2020 wrote to memory of 2676	2020	tmp4vvsfrfw.exe	msbuild.exe
PID 2020 wrote to memory of 2676	2020	tmp4vvsfrfw.exe	msbuild.exe
PID 2020 wrote to memory of 2676	2020	tmp4vvsfrfw.exe	msbuild.exe
PID 2020 wrote to memory of 2676	2020	tmp4vvsfrfw.exe	msbuild.exe
PID 2020 wrote to memory of 2676	2020	tmp4vvsfrfw.exe	msbuild.exe
PID 2020 wrote to memory of 2676	2020	tmp4vvsfrfw.exe	msbuild.exe
PID 2020 wrote to memory of 2676	2020	tmp4vvsfrfw.exe	msbuild.exe
PID 2020 wrote to memory of 2676	2020	tmp4vvsfrfw.exe	msbuild.exe
PID 2020 wrote to memory of 2436	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2436	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2436	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2436	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2436	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2436	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2436	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2436	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2436	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2200	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2200	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2200	2020	tmp4vvsfrfw.exe	jsc.exe
PID 2020 wrote to memory of 2200	2020	tmp4vvsfrfw.exe	jsc.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

tmp4vvsfrfw.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" tmp4vvsfrfw.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	tmp4vvsfrfw.exe

C:\Users\Admin\AppData\Local\Temp\tmp4vvsfrfw.exe
"C:\Users\Admin\AppData\Local\Temp\tmp4vvsfrfw.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2020

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\tmp4vvsfrfw.exe" -Force
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2556

C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
2⤵
PID:2676

C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2436

C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
2⤵
PID:2200

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2020-0-0x0000000000E50000-0x00000000010EC000-memory.dmp

Filesize
2.6MB

Download
memory/2020-1-0x000007FEF5360000-0x000007FEF5D4C000-memory.dmp

Filesize
9.9MB

Download
memory/2020-2-0x000000001B5B0000-0x000000001B630000-memory.dmp

Filesize
512KB

Download
memory/2020-3-0x000000001B630000-0x000000001B8CC000-memory.dmp

Filesize
2.6MB

Download
memory/2020-4-0x0000000000590000-0x0000000000628000-memory.dmp

Filesize
608KB

Download
memory/2020-32-0x000007FEF5360000-0x000007FEF5D4C000-memory.dmp

Filesize
9.9MB

Download
memory/2436-29-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2436-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2436-31-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2436-30-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2556-18-0x000000001B590000-0x000000001B872000-memory.dmp

Filesize
2.9MB

Download
memory/2556-19-0x0000000001C20000-0x0000000001C28000-memory.dmp

Filesize
32KB

Download
memory/2556-9-0x0000000002D30000-0x0000000002DB0000-memory.dmp

Filesize
512KB

Download
memory/2676-16-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2676-14-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2676-12-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2676-10-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads