agenttesla | 2c6f0cdc461fdb8bdf1f079f18f15338767ba7af10fea9fdbffb4bc21a742422

General

Target
kayzx.exe
Size 665KB
Sample221102-splwqshgg9
SHA256 2c6f0cdc461fdb8bdf1f079f18f15338767ba7af10fea9fdbffb4bc21a742422
MD5 5778bd1c683c0eed8167c111e908a25b
SHA1 6b60f732bea17cf91a820be216a0cedfa89df70f
SHA512 2265a14d528077ca9b380ae63de0cf97e5af3738b142dcebe66aee3b42b49ba7ec349d2dd7894c1d2eff1a1556700f44a19fbf62141d5d78777c6531e7333029
SSDEEP 12288:2whuJ3Qvhzps7Q64XLf54xSiYoGvzVazHoFn/UxI0T93/5R6gB6Q8:duJQs7L6bvzVGHoF/2T93BL6R
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5577155192:AAEz6ZTkghx2RsdTxeeE-sDulPHc5WQblVg/

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
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-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kayzx.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kayzx.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kayzx.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.

flow	ioc
58	api.ipify.org
59	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4800 set thread context of 4148	4800	kayzx.exe	93

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4800	kayzx.exe
4800	kayzx.exe
4148	kayzx.exe
4148	kayzx.exe
4148	kayzx.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4800	kayzx.exe
Token: SeDebugPrivilege	4148	kayzx.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 4808	4800	kayzx.exe	92
PID 4800 wrote to memory of 4808	4800	kayzx.exe	92
PID 4800 wrote to memory of 4808	4800	kayzx.exe	92
PID 4800 wrote to memory of 4148	4800	kayzx.exe	93
PID 4800 wrote to memory of 4148	4800	kayzx.exe	93
PID 4800 wrote to memory of 4148	4800	kayzx.exe	93
PID 4800 wrote to memory of 4148	4800	kayzx.exe	93
PID 4800 wrote to memory of 4148	4800	kayzx.exe	93
PID 4800 wrote to memory of 4148	4800	kayzx.exe	93
PID 4800 wrote to memory of 4148	4800	kayzx.exe	93
PID 4800 wrote to memory of 4148	4800	kayzx.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kayzx.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kayzx.exe

C:\Users\Admin\AppData\Local\Temp\kayzx.exe
"C:\Users\Admin\AppData\Local\Temp\kayzx.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Users\Admin\AppData\Local\Temp\kayzx.exe
  "C:\Users\Admin\AppData\Local\Temp\kayzx.exe"
  2⤵
  PID:4808
- C:\Users\Admin\AppData\Local\Temp\kayzx.exe
  "C:\Users\Admin\AppData\Local\Temp\kayzx.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4148

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

kayzx.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\kayzx.exe.log
Size 1KB
SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
MD5 SHA1 SHA512

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memory/4148-139-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/4148-141-0x0000000005CA0000-0x0000000005D06000-memory.dmp

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memory/4148-142-0x0000000006A10000-0x0000000006A60000-memory.dmp

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memory/4800-132-0x00000000003E0000-0x000000000048C000-memory.dmp

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memory/4800-133-0x00000000053A0000-0x0000000005944000-memory.dmp

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memory/4800-134-0x0000000004E90000-0x0000000004F22000-memory.dmp

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memory/4800-135-0x0000000004E20000-0x0000000004E2A000-memory.dmp

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memory/4800-136-0x0000000007A40000-0x0000000007ADC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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