agenttesla | d362820595a2af8f945673bff5504d37b6425112be9cc0256ae17ade7aaed13f

General

Target

CUSTOMER.exe
Size

839KB
MD5

5f823a1ea6d64bfdfde655735cd2bd53
SHA1

0edd4a3375d860ff3f5c66f4a2843994ba9f227f
SHA256

8e4b7cb2dd61f0663ee762183b5af3713dbe7bba63b780805270d4d4dbd6dcb2
SHA512

78982807412333116ca7513dbb682b256557cd2df62e77c5f10d4799ceaab18eb3fe2a24124f9668c373d890f565eacb7661d5d4f8f652c93c93c39a522b2a71
SSDEEP

12288:MzfEu5TZBWRBO/TG6g/CdXx92Ltm+lya4gylPsIcIMU8fYtYiAUz:EZW2SZl94gylEIcIB8GJz

Score

10^/10

agenttesla collection 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
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-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CUSTOMER.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CUSTOMER.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CUSTOMER.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
32	api.ipify.org
31	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3520 set thread context of 1412	3520	CUSTOMER.exe	85

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4124	1412	WerFault.exe	85

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1412	CUSTOMER.exe
1412	CUSTOMER.exe
1412	CUSTOMER.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	CUSTOMER.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3520 wrote to memory of 1412	3520	CUSTOMER.exe	85
PID 3520 wrote to memory of 1412	3520	CUSTOMER.exe	85
PID 3520 wrote to memory of 1412	3520	CUSTOMER.exe	85
PID 3520 wrote to memory of 1412	3520	CUSTOMER.exe	85
PID 3520 wrote to memory of 1412	3520	CUSTOMER.exe	85
PID 3520 wrote to memory of 1412	3520	CUSTOMER.exe	85
PID 3520 wrote to memory of 1412	3520	CUSTOMER.exe	85
PID 3520 wrote to memory of 1412	3520	CUSTOMER.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CUSTOMER.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CUSTOMER.exe

C:\Users\Admin\AppData\Local\Temp\CUSTOMER.exe
"C:\Users\Admin\AppData\Local\Temp\CUSTOMER.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3520
- C:\Users\Admin\AppData\Local\Temp\CUSTOMER.exe
  "C:\Users\Admin\AppData\Local\Temp\CUSTOMER.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1412
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1412 -s 2200
    3⤵
    - Program crash
    PID:4124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1412 -ip 1412
1⤵
PID:212

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\CUSTOMER.exe.log

Filesize
1KB

MD5
e08f822522c617a40840c62e4b0fb45e

SHA1
ae516dca4da5234be6676d3f234c19ec55725be7

SHA256
bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

SHA512
894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

Download Submit
memory/1412-139-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1412-141-0x0000000006BD0000-0x0000000006C20000-memory.dmp

Filesize
320KB

Download
memory/3520-132-0x0000000000BE0000-0x0000000000CB8000-memory.dmp

Filesize
864KB

Download
memory/3520-133-0x0000000005CD0000-0x0000000006274000-memory.dmp

Filesize
5.6MB

Download
memory/3520-134-0x0000000005720000-0x00000000057B2000-memory.dmp

Filesize
584KB

Download
memory/3520-135-0x00000000057F0000-0x00000000057FA000-memory.dmp

Filesize
40KB

Download
memory/3520-136-0x000000000A320000-0x000000000A3BC000-memory.dmp

Filesize
624KB

Download
memory/3520-137-0x000000000A4C0000-0x000000000A526000-memory.dmp

Filesize
408KB

Download

Analysis

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