agenttesla | 7741d9cf1339e3fdf86ae1617e8aeb509a8e364e22ed0e7d77f3538063971639

General

Target

BF0SGkmt7ZN2o4u.exe
Size

830KB
MD5

f986110a13038171184dbf858669a6de
SHA1

565d73cde90400f4366570ae6297f51361ee14f0
SHA256

afb7dcf65128c644b28c6b29611d9766c6d41797b6d4edb189ac1e3dc0effc77
SHA512

1f994738f6b7dd742486bf5752c9a2a1c7850cd94ef2227dfb5fca88d4b9704d46b986ad33be901b91c3292c76da1123146bd1d400befcdf231f521c3c1e782a

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.flsrnidth.com
Port:
587
Username:
[email protected]
Password:
L%_#$f{LfI?^

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1808-62-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1808-63-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1808-64-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1808-65-0x000000000043720E-mapping.dmp	family_agenttesla
behavioral1/memory/1808-67-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1808-69-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\YYtJku = "C:\\Users\\Admin\\AppData\\Roaming\\YYtJku\\YYtJku.exe"	vbc.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

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

Processes:

BF0SGkmt7ZN2o4u.exe

description pid process target process

PID 1560 set thread context of 1808 1560 BF0SGkmt7ZN2o4u.exe vbc.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

BF0SGkmt7ZN2o4u.exevbc.exe

pid process

1560 BF0SGkmt7ZN2o4u.exe
1560 BF0SGkmt7ZN2o4u.exe
1808 vbc.exe
1808 vbc.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

BF0SGkmt7ZN2o4u.exevbc.exe

description pid process

Token: SeDebugPrivilege 1560 BF0SGkmt7ZN2o4u.exe
Token: SeDebugPrivilege 1808 vbc.exe

flow	ioc
5	api.ipify.org
6	api.ipify.org

description	pid	process	target process
PID 1560 set thread context of 1808	1560	BF0SGkmt7ZN2o4u.exe	vbc.exe

pid	process
1560	BF0SGkmt7ZN2o4u.exe
1560	BF0SGkmt7ZN2o4u.exe
1808	vbc.exe
1808	vbc.exe

description	pid	process
Token: SeDebugPrivilege	1560	BF0SGkmt7ZN2o4u.exe
Token: SeDebugPrivilege	1808	vbc.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

BF0SGkmt7ZN2o4u.exe

description	pid	process	target process
PID 1560 wrote to memory of 1808	1560	BF0SGkmt7ZN2o4u.exe	vbc.exe
PID 1560 wrote to memory of 1808	1560	BF0SGkmt7ZN2o4u.exe	vbc.exe
PID 1560 wrote to memory of 1808	1560	BF0SGkmt7ZN2o4u.exe	vbc.exe
PID 1560 wrote to memory of 1808	1560	BF0SGkmt7ZN2o4u.exe	vbc.exe
PID 1560 wrote to memory of 1808	1560	BF0SGkmt7ZN2o4u.exe	vbc.exe
PID 1560 wrote to memory of 1808	1560	BF0SGkmt7ZN2o4u.exe	vbc.exe
PID 1560 wrote to memory of 1808	1560	BF0SGkmt7ZN2o4u.exe	vbc.exe
PID 1560 wrote to memory of 1808	1560	BF0SGkmt7ZN2o4u.exe	vbc.exe
PID 1560 wrote to memory of 1808	1560	BF0SGkmt7ZN2o4u.exe	vbc.exe

outlook_office_path 1 IoCs

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

outlook_win_path 1 IoCs

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

C:\Users\Admin\AppData\Local\Temp\BF0SGkmt7ZN2o4u.exe
"C:\Users\Admin\AppData\Local\Temp\BF0SGkmt7ZN2o4u.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1560
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1808

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Scripting

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1560-54-0x0000000000EE0000-0x0000000000FB6000-memory.dmp

Filesize
856KB

Download
memory/1560-55-0x0000000076531000-0x0000000076533000-memory.dmp

Filesize
8KB

Download
memory/1560-56-0x00000000003E0000-0x00000000003EA000-memory.dmp

Filesize
40KB

Download
memory/1560-57-0x0000000000740000-0x00000000007A6000-memory.dmp

Filesize
408KB

Download
memory/1560-58-0x0000000000350000-0x00000000003B0000-memory.dmp

Filesize
384KB

Download
memory/1808-59-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1808-60-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1808-62-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1808-63-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1808-64-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1808-65-0x000000000043720E-mapping.dmp

Download
memory/1808-67-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1808-69-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads