agenttesla | 3ecc0863d79785e8b6cb8bf003fcff6c41195e278aaed426ed26144b11d3710c

General

Target

PO_75462.exe
Size

768KB
MD5

22dbfe74635797260671cd5dbbf0a3bc
SHA1

8cbdde1a2319ee60c9f6a9e05d2879362ab44668
SHA256

6a83f449fc1dd1f88e89ba47a29c8e3a12b04145ae4377cddc5ca5a93ead0c91
SHA512

713fa04c7dbf9612bf69336d0cc3b56f433db712a516a6496160706135fad58e8a31cb2a54e893ecebb49b34bf7466b330d44f1e9446fde0af9cda3f118eb88e

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Signatures

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

AgentTesla Payload 6 IoCs

resource	yara_rule
behavioral1/memory/1292-72-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1292-71-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1292-73-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1292-74-0x00000000004468DE-mapping.dmp	family_agenttesla
behavioral1/memory/1292-77-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1292-79-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

pid	Process
1988	system32.exe
1292	InstallUtil.exe

Loads dropped DLL 2 IoCs

pid	Process
1636	PO_75462.exe
1988	system32.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

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 stealer

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 stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

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	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\system32 = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\system32.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1988 set thread context of 1292	1988	system32.exe	31

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1636	PO_75462.exe
1636	PO_75462.exe
1988	system32.exe
1988	system32.exe
1988	system32.exe
1292	InstallUtil.exe
1292	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	PO_75462.exe
Token: SeDebugPrivilege	1988	system32.exe
Token: SeDebugPrivilege	1292	InstallUtil.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 1552	1636	PO_75462.exe	27
PID 1636 wrote to memory of 1552	1636	PO_75462.exe	27
PID 1636 wrote to memory of 1552	1636	PO_75462.exe	27
PID 1636 wrote to memory of 1552	1636	PO_75462.exe	27
PID 1552 wrote to memory of 1580	1552	cmd.exe	29
PID 1552 wrote to memory of 1580	1552	cmd.exe	29
PID 1552 wrote to memory of 1580	1552	cmd.exe	29
PID 1552 wrote to memory of 1580	1552	cmd.exe	29
PID 1636 wrote to memory of 1988	1636	PO_75462.exe	30
PID 1636 wrote to memory of 1988	1636	PO_75462.exe	30
PID 1636 wrote to memory of 1988	1636	PO_75462.exe	30
PID 1636 wrote to memory of 1988	1636	PO_75462.exe	30
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31
PID 1988 wrote to memory of 1292	1988	system32.exe	31

outlook_office_path 1 IoCs

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

outlook_win_path 1 IoCs

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

C:\Users\Admin\AppData\Local\Temp\PO_75462.exe
"C:\Users\Admin\AppData\Local\Temp\PO_75462.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v system32 /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\system32.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1552
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v system32 /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\system32.exe"
    3⤵
    - Adds Run key to start application
    PID:1580
- C:\Users\Admin\system32.exe
  "C:\Users\Admin\system32.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1988
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:1292

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

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\system32.exe

Filesize
768KB

MD5
22dbfe74635797260671cd5dbbf0a3bc

SHA1
8cbdde1a2319ee60c9f6a9e05d2879362ab44668

SHA256
6a83f449fc1dd1f88e89ba47a29c8e3a12b04145ae4377cddc5ca5a93ead0c91

SHA512
713fa04c7dbf9612bf69336d0cc3b56f433db712a516a6496160706135fad58e8a31cb2a54e893ecebb49b34bf7466b330d44f1e9446fde0af9cda3f118eb88e

Download Submit
C:\Users\Admin\system32.exe

Filesize
768KB

MD5
22dbfe74635797260671cd5dbbf0a3bc

SHA1
8cbdde1a2319ee60c9f6a9e05d2879362ab44668

SHA256
6a83f449fc1dd1f88e89ba47a29c8e3a12b04145ae4377cddc5ca5a93ead0c91

SHA512
713fa04c7dbf9612bf69336d0cc3b56f433db712a516a6496160706135fad58e8a31cb2a54e893ecebb49b34bf7466b330d44f1e9446fde0af9cda3f118eb88e

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\system32.exe

Filesize
768KB

MD5
22dbfe74635797260671cd5dbbf0a3bc

SHA1
8cbdde1a2319ee60c9f6a9e05d2879362ab44668

SHA256
6a83f449fc1dd1f88e89ba47a29c8e3a12b04145ae4377cddc5ca5a93ead0c91

SHA512
713fa04c7dbf9612bf69336d0cc3b56f433db712a516a6496160706135fad58e8a31cb2a54e893ecebb49b34bf7466b330d44f1e9446fde0af9cda3f118eb88e

Download Submit
memory/1292-72-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1292-71-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1292-79-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1292-77-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1292-73-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1292-69-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1292-68-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1636-56-0x0000000075841000-0x0000000075843000-memory.dmp

Filesize
8KB

Download
memory/1636-54-0x00000000003E0000-0x00000000004A6000-memory.dmp

Filesize
792KB

Download
memory/1636-55-0x0000000000360000-0x000000000036A000-memory.dmp

Filesize
40KB

Download
memory/1988-65-0x00000000005B0000-0x00000000005BA000-memory.dmp

Filesize
40KB

Download
memory/1988-63-0x0000000000A50000-0x0000000000B16000-memory.dmp

Filesize
792KB

Download

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