agenttesla | 90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245

General

Target

90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe
Size

861KB
MD5

4f317fb6f4fc58e20f80bb8054767557
SHA1

b7d39f72903941f59b568476d3e548b3060b9af6
SHA256

90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245
SHA512

5210fc381b002ec82e86ef83784d94ca5c895a3eb1c9fd72751b45f142ac950a9a7127b53476ee0e800d7973bea2090f6f1a204ae04396aaa7ab620b89434f64
SSDEEP

6144:MKFylHuqIDU7/5mgS7q0XQxvV2B/TsSZ7ADmQK5DLlHE:MK8IDC/5mi5KLsS2KhR

Score

10^/10

agenttesla agilenet collection defense_evasion discovery keylogger 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 family
agenttesla

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/4476-13-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla

System Binary Proxy Execution: InstallUtil 1 TTPs 2 IoCs

Abuse InstallUtil to proxy execution of malicious code.

defense_evasion

InstallUtil

T1218.004

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe
Key opened	\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\InstallUtil.exe	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe

Executes dropped EXE 1 IoCs

pid	Process
4476	InstallUtil.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral2/memory/1644-3-0x0000000005510000-0x0000000005520000-memory.dmp	agile_net

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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
T1552.001
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
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1644 set thread context of 4476	1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe	99

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe
1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe
1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe
4476	InstallUtil.exe
4476	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe
Token: SeDebugPrivilege	4476	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 4476	1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe	99
PID 1644 wrote to memory of 4476	1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe	99
PID 1644 wrote to memory of 4476	1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe	99
PID 1644 wrote to memory of 4476	1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe	99
PID 1644 wrote to memory of 4476	1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe	99
PID 1644 wrote to memory of 4476	1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe	99
PID 1644 wrote to memory of 4476	1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe	99
PID 1644 wrote to memory of 4476	1644	90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe	99

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe
"C:\Users\Admin\AppData\Local\Temp\90ed9d25dc93f73d574a27e7b7e4806107eafc2018038840521cf44ec5f38245.exe"
1⤵
- System Binary Proxy Execution: InstallUtil
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

System Binary Proxy Execution

1

T1218

InstallUtil

1

T1218.004

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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
memory/1644-6-0x00000000062C0000-0x0000000006864000-memory.dmp

Filesize
5.6MB

Download
memory/1644-2-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/1644-3-0x0000000005510000-0x0000000005520000-memory.dmp

Filesize
64KB

Download
memory/1644-4-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Filesize
4KB

Download
memory/1644-5-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/1644-18-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/1644-7-0x0000000005DF0000-0x0000000005E82000-memory.dmp

Filesize
584KB

Download
memory/1644-8-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/1644-10-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/1644-11-0x0000000006000000-0x000000000600A000-memory.dmp

Filesize
40KB

Download
memory/1644-1-0x0000000000B40000-0x0000000000C1E000-memory.dmp

Filesize
888KB

Download
memory/1644-0-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Filesize
4KB

Download
memory/4476-13-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4476-17-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/4476-19-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/4476-20-0x00000000057C0000-0x000000000585C000-memory.dmp

Filesize
624KB

Download
memory/4476-21-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/4476-23-0x0000000006320000-0x0000000006386000-memory.dmp

Filesize
408KB

Download
memory/4476-22-0x0000000005CE0000-0x0000000005CF8000-memory.dmp

Filesize
96KB

Download
memory/4476-24-0x0000000006B80000-0x0000000006BD0000-memory.dmp

Filesize
320KB

Download
memory/4476-25-0x0000000006B60000-0x0000000006B6A000-memory.dmp

Filesize
40KB

Download
memory/4476-26-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/4476-27-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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