agenttesla | c19f1d22a47c99c35f8a383080b5ad75cdd12f32077b3c874fe83e8dfdbe2e73

General

Target
UCBank98765433456789987654.exe
Size 187KB
Sample220623-gmffdsbhcp
SHA256 c19f1d22a47c99c35f8a383080b5ad75cdd12f32077b3c874fe83e8dfdbe2e73
MD5 3fac86eaedc4f924f33c2ee7a46725b6
SHA1 25869403f8bd68e6f550a8efc731ab1310fce6eb
SHA512 4c06da344c69c599f21ba37315ab12431e51a09973377cc1aa4188dc5bdcdd0edff1c5ec98235072f3827da6c4b458d2ce09abe139e3595792c3fcfe64cf5b52
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5421147975:AAGrsGnLOHZfFv7yHuj3hZdQSOVmPodIAVI/sendDocument

Signatures

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

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	UCBank98765433456789987654.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

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-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorerupdate = "C:\\Users\\Admin\\AppData\\Roaming\\explorerupdate\\explorerupdate.exe"	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4532 set thread context of 3924	4532	UCBank98765433456789987654.exe	94

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3576	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4532	UCBank98765433456789987654.exe
4532	UCBank98765433456789987654.exe
3924	InstallUtil.exe
3924	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4532	UCBank98765433456789987654.exe
Token: SeDebugPrivilege	3924	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3924	InstallUtil.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 3796	4532	UCBank98765433456789987654.exe	86
PID 4532 wrote to memory of 3796	4532	UCBank98765433456789987654.exe	86
PID 4532 wrote to memory of 3796	4532	UCBank98765433456789987654.exe	86
PID 3796 wrote to memory of 3576	3796	cmd.exe	88
PID 3796 wrote to memory of 3576	3796	cmd.exe	88
PID 3796 wrote to memory of 3576	3796	cmd.exe	88
PID 4532 wrote to memory of 3924	4532	UCBank98765433456789987654.exe	94
PID 4532 wrote to memory of 3924	4532	UCBank98765433456789987654.exe	94
PID 4532 wrote to memory of 3924	4532	UCBank98765433456789987654.exe	94
PID 4532 wrote to memory of 3924	4532	UCBank98765433456789987654.exe	94
PID 4532 wrote to memory of 3924	4532	UCBank98765433456789987654.exe	94
PID 4532 wrote to memory of 3924	4532	UCBank98765433456789987654.exe	94
PID 4532 wrote to memory of 3924	4532	UCBank98765433456789987654.exe	94
PID 4532 wrote to memory of 3924	4532	UCBank98765433456789987654.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\UCBank98765433456789987654.exe
"C:\Users\Admin\AppData\Local\Temp\UCBank98765433456789987654.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 20
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3796
- - C:\Windows\SysWOW64\timeout.exe
    timeout 20
    3⤵
    - Delays execution with timeout.exe
    PID:3576
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:3924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/3924-137-0x0000000000400000-0x000000000043A000-memory.dmp

Download

memory/3924-138-0x0000000005820000-0x00000000058BC000-memory.dmp

Download

memory/3924-139-0x0000000006620000-0x0000000006686000-memory.dmp

Download

memory/3924-140-0x0000000006C20000-0x0000000006C70000-memory.dmp

Download

memory/4532-130-0x0000000000C10000-0x0000000000C44000-memory.dmp

Download

memory/4532-131-0x0000000005B20000-0x00000000060C4000-memory.dmp

Download

memory/4532-132-0x0000000005610000-0x00000000056A2000-memory.dmp

Download

memory/4532-133-0x0000000005600000-0x000000000560A000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads