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 1 IoCs

resource	yara_rule
behavioral2/memory/492-139-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

pid	Process
3288	system32.exe
492	InstallUtil.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	PO_75462.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-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
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

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-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\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 3288 set thread context of 492	3288	system32.exe	91

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 29 IoCs

pid	Process
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
4776	PO_75462.exe
3288	system32.exe
3288	system32.exe
3288	system32.exe
492	InstallUtil.exe
492	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	PO_75462.exe
Token: SeDebugPrivilege	3288	system32.exe
Token: SeDebugPrivilege	492	InstallUtil.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4776 wrote to memory of 2428	4776	PO_75462.exe	80
PID 4776 wrote to memory of 2428	4776	PO_75462.exe	80
PID 4776 wrote to memory of 2428	4776	PO_75462.exe	80
PID 2428 wrote to memory of 4824	2428	cmd.exe	82
PID 2428 wrote to memory of 4824	2428	cmd.exe	82
PID 2428 wrote to memory of 4824	2428	cmd.exe	82
PID 4776 wrote to memory of 3288	4776	PO_75462.exe	90
PID 4776 wrote to memory of 3288	4776	PO_75462.exe	90
PID 4776 wrote to memory of 3288	4776	PO_75462.exe	90
PID 3288 wrote to memory of 492	3288	system32.exe	91
PID 3288 wrote to memory of 492	3288	system32.exe	91
PID 3288 wrote to memory of 492	3288	system32.exe	91
PID 3288 wrote to memory of 492	3288	system32.exe	91
PID 3288 wrote to memory of 492	3288	system32.exe	91
PID 3288 wrote to memory of 492	3288	system32.exe	91
PID 3288 wrote to memory of 492	3288	system32.exe	91
PID 3288 wrote to memory of 492	3288	system32.exe	91

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\PO_75462.exe
"C:\Users\Admin\AppData\Local\Temp\PO_75462.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4776
- 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:2428
- - 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:4824
- C:\Users\Admin\system32.exe
  "C:\Users\Admin\system32.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3288
- - 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:492

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

Query Registry

1

T1012

System Information Discovery

2

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
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

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

Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

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
memory/492-142-0x0000000005140000-0x00000000051DC000-memory.dmp

Filesize
624KB

Download
memory/492-139-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/492-143-0x0000000005D50000-0x0000000005DB6000-memory.dmp

Filesize
408KB

Download
memory/492-144-0x00000000062C0000-0x0000000006310000-memory.dmp

Filesize
320KB

Download
memory/492-145-0x0000000006410000-0x000000000641A000-memory.dmp

Filesize
40KB

Download
memory/4776-132-0x0000000004FF0000-0x0000000005082000-memory.dmp

Filesize
584KB

Download
memory/4776-131-0x0000000005480000-0x0000000005A24000-memory.dmp

Filesize
5.6MB

Download
memory/4776-130-0x0000000000580000-0x0000000000646000-memory.dmp

Filesize
792KB

Download

Analysis

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