agenttesla | 66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e

General

Target

66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe
Size

1.4MB
MD5

81b6c3bc8ffb62a5301ae6a3fe7298e5
SHA1

2e4dccda2cacb626fe0fb511a942692ffb949789
SHA256

66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e
SHA512

6eeed543341a7430b8104eeeef271cf95cf4897c8d6488c06da6ab6d6118d31f9653998b52105f3af4d98543f7c8fa5a0218bbd993dc0da012396bba33fb908a
SSDEEP

24576:Z+kwnmSMDo5tW0ak+9BVaFcfv1RIAhjLoamMiX4lNmZg0YxegPbUIDPP:ZBwnZMOaxOSJjLoyEkmZ9Y14

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.exportersglobe.com
Port:
587
Username:
[email protected]
Password:
MnmPsqBteq4_
Email To:
[email protected]

Signatures

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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe

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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4496 set thread context of 636	4496	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe	99

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2880	636	WerFault.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	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
636	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe
636	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	636	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4496 wrote to memory of 636	4496	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe	99
PID 4496 wrote to memory of 636	4496	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe	99
PID 4496 wrote to memory of 636	4496	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe	99
PID 4496 wrote to memory of 636	4496	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe	99
PID 4496 wrote to memory of 636	4496	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe	99
PID 4496 wrote to memory of 636	4496	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe	99
PID 4496 wrote to memory of 636	4496	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe	99
PID 4496 wrote to memory of 636	4496	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe	99

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe

C:\Users\Admin\AppData\Local\Temp\66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe
"C:\Users\Admin\AppData\Local\Temp\66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Users\Admin\AppData\Local\Temp\66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe
  "C:\Users\Admin\AppData\Local\Temp\66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:636
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 636 -s 1184
    3⤵
    - Program crash
    PID:2880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 636 -ip 636
1⤵
PID:4300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

5

T1552

Credentials In Files

4

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\Microsoft\CLR_v4.0_32\UsageLogs\66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe.log

Filesize
1KB

MD5
e08f822522c617a40840c62e4b0fb45e

SHA1
ae516dca4da5234be6676d3f234c19ec55725be7

SHA256
bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

SHA512
894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

Download Submit
memory/636-13-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/636-22-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/636-21-0x00000000068C0000-0x0000000006910000-memory.dmp

Filesize
320KB

Download
memory/636-19-0x0000000005770000-0x0000000005788000-memory.dmp

Filesize
96KB

Download
memory/636-18-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/636-16-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-4-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-6-0x0000000005B30000-0x0000000005B46000-memory.dmp

Filesize
88KB

Download
memory/4496-9-0x0000000007FD0000-0x000000000806C000-memory.dmp

Filesize
624KB

Download
memory/4496-10-0x0000000008180000-0x0000000008216000-memory.dmp

Filesize
600KB

Download
memory/4496-11-0x00000000082D0000-0x0000000008336000-memory.dmp

Filesize
408KB

Download
memory/4496-12-0x0000000008260000-0x000000000829C000-memory.dmp

Filesize
240KB

Download
memory/4496-7-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/4496-8-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-0-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/4496-17-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-5-0x0000000005720000-0x000000000572A000-memory.dmp

Filesize
40KB

Download
memory/4496-3-0x0000000005590000-0x0000000005622000-memory.dmp

Filesize
584KB

Download
memory/4496-2-0x0000000005B40000-0x00000000060E4000-memory.dmp

Filesize
5.6MB

Download
memory/4496-1-0x0000000000A30000-0x0000000000B96000-memory.dmp

Filesize
1.4MB

Download

Analysis

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