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

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

tmp4vvsfrfw.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	tmp4vvsfrfw.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\tmp4vvsfrfw.exe = "0"	tmp4vvsfrfw.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

tmp4vvsfrfw.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	tmp4vvsfrfw.exe

Windows security modification 2 TTPs 3 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

tmp4vvsfrfw.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	tmp4vvsfrfw.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\tmp4vvsfrfw.exe = "0"	tmp4vvsfrfw.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	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-1-5-21-1162180587-977231257-2194346871-1000\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

18 api.ipify.org
19 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

tmp4vvsfrfw.exe

description pid process target process

PID 4972 set thread context of 2432 4972 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 4 IoCs

Processes:

powershell.exejsc.exe

pid process

1448 powershell.exe
1448 powershell.exe
2432 jsc.exe
2432 jsc.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

tmp4vvsfrfw.exepowershell.exejsc.exe

description pid process

Token: SeDebugPrivilege 4972 tmp4vvsfrfw.exe
Token: SeDebugPrivilege 1448 powershell.exe
Token: SeDebugPrivilege 2432 jsc.exe

flow	ioc
18	api.ipify.org
19	api.ipify.org

description	pid	process	target process
PID 4972 set thread context of 2432	4972	tmp4vvsfrfw.exe	jsc.exe

pid	process
1448	powershell.exe
1448	powershell.exe
2432	jsc.exe
2432	jsc.exe

description	pid	process
Token: SeDebugPrivilege	4972	tmp4vvsfrfw.exe
Token: SeDebugPrivilege	1448	powershell.exe
Token: SeDebugPrivilege	2432	jsc.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

tmp4vvsfrfw.exe

description	pid	process	target process
PID 4972 wrote to memory of 1448	4972	tmp4vvsfrfw.exe	powershell.exe
PID 4972 wrote to memory of 1448	4972	tmp4vvsfrfw.exe	powershell.exe
PID 4972 wrote to memory of 2432	4972	tmp4vvsfrfw.exe	jsc.exe
PID 4972 wrote to memory of 2432	4972	tmp4vvsfrfw.exe	jsc.exe
PID 4972 wrote to memory of 2432	4972	tmp4vvsfrfw.exe	jsc.exe
PID 4972 wrote to memory of 2432	4972	tmp4vvsfrfw.exe	jsc.exe
PID 4972 wrote to memory of 2432	4972	tmp4vvsfrfw.exe	jsc.exe
PID 4972 wrote to memory of 2432	4972	tmp4vvsfrfw.exe	jsc.exe
PID 4972 wrote to memory of 2432	4972	tmp4vvsfrfw.exe	jsc.exe
PID 4972 wrote to memory of 2432	4972	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
- Windows security bypass
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4972

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:1448

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:2432

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

3

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pur3iwlw.bi4.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1448-25-0x00007FFA35930000-0x00007FFA363F1000-memory.dmp

Filesize
10.8MB

Download
memory/1448-7-0x00000146C9740000-0x00000146C9750000-memory.dmp

Filesize
64KB

Download
memory/1448-19-0x00007FFA35930000-0x00007FFA363F1000-memory.dmp

Filesize
10.8MB

Download
memory/1448-20-0x00000146C9740000-0x00000146C9750000-memory.dmp

Filesize
64KB

Download
memory/1448-12-0x00000146C96F0000-0x00000146C9712000-memory.dmp

Filesize
136KB

Download
memory/2432-29-0x0000000006A80000-0x0000000006AD0000-memory.dmp

Filesize
320KB

Download
memory/2432-31-0x0000000006CB0000-0x0000000006D42000-memory.dmp

Filesize
584KB

Download
memory/2432-5-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2432-21-0x0000000005390000-0x00000000053A0000-memory.dmp

Filesize
64KB

Download
memory/2432-33-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/2432-34-0x0000000005390000-0x00000000053A0000-memory.dmp

Filesize
64KB

Download
memory/2432-32-0x0000000006C50000-0x0000000006C5A000-memory.dmp

Filesize
40KB

Download
memory/2432-8-0x0000000005950000-0x0000000005EF4000-memory.dmp

Filesize
5.6MB

Download
memory/2432-22-0x0000000005410000-0x0000000005476000-memory.dmp

Filesize
408KB

Download
memory/2432-6-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/2432-30-0x0000000006B70000-0x0000000006C0C000-memory.dmp

Filesize
624KB

Download
memory/4972-2-0x000002D574790000-0x000002D5747A0000-memory.dmp

Filesize
64KB

Download
memory/4972-26-0x00007FFA35930000-0x00007FFA363F1000-memory.dmp

Filesize
10.8MB

Download
memory/4972-0-0x000002D559DF0000-0x000002D55A08C000-memory.dmp

Filesize
2.6MB

Download
memory/4972-4-0x000002D55A440000-0x000002D55A4D8000-memory.dmp

Filesize
608KB

Download
memory/4972-1-0x00007FFA35930000-0x00007FFA363F1000-memory.dmp

Filesize
10.8MB

Download
memory/4972-3-0x000002D5747A0000-0x000002D574A3C000-memory.dmp

Filesize
2.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads