agenttesla | 5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65

General

Target

5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe
Size

761KB
MD5

a66373c0116b4e5afdf5c0c314b5e4fe
SHA1

21598dbe4fc886f3b18fd73de9d8943c2a7998c8
SHA256

5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65
SHA512

6585f2ddaac37c046a0f9a59f774209ca699e4709ecb4a94a82ebb3ac6313a061256fd697075e1f60653fd84d6153e099381919b205c259a7fe7101cce5d4c53
SSDEEP

12288:KkPAtlj3XUog+pht8LFOcc6WkFREIpEqynK3/tkpcoQSt8bqZCoW4Wki9WwzRm:eTpv8bWkbEIpunEKpFZb2fk

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.nusatek.com
Port:
587
Username:
[email protected]
Password:
nusatek187753d
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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/2408-8-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.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-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2884 set thread context of 2408	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	106

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
312	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe
2408	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe
2408	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe
Token: SeDebugPrivilege	2408	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2408	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 312	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	104
PID 2884 wrote to memory of 312	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	104
PID 2884 wrote to memory of 312	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	104
PID 2884 wrote to memory of 2408	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	106
PID 2884 wrote to memory of 2408	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	106
PID 2884 wrote to memory of 2408	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	106
PID 2884 wrote to memory of 2408	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	106
PID 2884 wrote to memory of 2408	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	106
PID 2884 wrote to memory of 2408	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	106
PID 2884 wrote to memory of 2408	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	106
PID 2884 wrote to memory of 2408	2884	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe	106

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe

C:\Users\Admin\AppData\Local\Temp\5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe
"C:\Users\Admin\AppData\Local\Temp\5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\akAUxlYY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp940D.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:312
- C:\Users\Admin\AppData\Local\Temp\5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

Query Registry

1

T1012

System Information Discovery

2

T1082

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\5c18981837fc6721301b98e3f096a76826e9f6480023ca20502356ec83aacb65.exe.log

Filesize
581B

MD5
fb7ca783de5c0f0d7e7c7cdee64542b5

SHA1
25aab766c326e43d03ae94a7409b3512dd17d516

SHA256
47fc53ff728224a600a0e80d49e56a224479589d7ed914c6312fec93dad0c3ef

SHA512
2694aea7a5b4998b03ced645003be53152aaa3b31069f0525263fb8b170753a2677acb5a16e84249a070a4a249c52c5520a0c3dad22eca6862fce32adddd155b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp940D.tmp

Filesize
1KB

MD5
ec09bad7bb2394366364502d80f0814f

SHA1
036c94edc133c78235a172d207e522d24d2185c4

SHA256
4769dbffad559b42d34b9c8d0513db919e6d2e283f39b7c509b5023e437cfce9

SHA512
d04f813cf57181eb96c609cc531ecc717d0d06b81b1717a2c777c5d5da2762358547363111417a27f883d00742e530fc6334e659e6ce036983141771e25c70b1

Download Submit
memory/2408-13-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/2408-17-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/2408-16-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/2408-15-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/2408-14-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/2408-8-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2408-12-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/2884-3-0x00000000749B2000-0x00000000749B3000-memory.dmp

Filesize
4KB

Download
memory/2884-11-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/2884-4-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/2884-0-0x00000000749B2000-0x00000000749B3000-memory.dmp

Filesize
4KB

Download
memory/2884-2-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/2884-1-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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