agenttesla | bfb35a39b72e24ce801468a629e64b1806ae5cf8339ade1ee7f145ec4497be93

General

Target

$PLUGINSDIR/aneyji.dll
Size

19KB
MD5

f7a30cb571aa862021ff786169f72a80
SHA1

d002635afeacd67ad2e5764d4dd07e0ec5f49ae3
SHA256

3c3b81e2f3de386bb78562b8005fcc582aa83d1bd5ac99aca14bd235f401c018
SHA512

7fc63a94a72b93ff57645d3e8c92726b7f77976ed5801461bfdaf4638dd8376565dad5f6663d1e0bd064e7521230b2b9f7aae90a5733f387fa003b22b501c69e
SSDEEP

384:mjrLtiTvRxxt1BoXiaQxmCc1abG8QMqjfB4z:krLYTvR7xJxmpKG8ay

Score

10^/10

agenttesla collection discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot2046248941:AAG5Z0PyWwtApmPaysBm59voK10ec9Rgnaw/sendDocument

Signatures

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

AgentTesla payload 4 IoCs

resource	yara_rule
behavioral3/memory/2432-1-0x0000000000400000-0x000000000044B000-memory.dmp	family_agenttesla
behavioral3/memory/2432-5-0x0000000000400000-0x000000000044B000-memory.dmp	family_agenttesla
behavioral3/memory/2432-3-0x0000000000400000-0x000000000044B000-memory.dmp	family_agenttesla
behavioral3/memory/2432-7-0x00000000001F0000-0x000000000022C000-memory.dmp	family_agenttesla

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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2592 set thread context of 2432	2592	rundll32.exe	31

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2432	rundll32.exe
2432	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	rundll32.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 2592	1980	rundll32.exe	30
PID 1980 wrote to memory of 2592	1980	rundll32.exe	30
PID 1980 wrote to memory of 2592	1980	rundll32.exe	30
PID 1980 wrote to memory of 2592	1980	rundll32.exe	30
PID 1980 wrote to memory of 2592	1980	rundll32.exe	30
PID 1980 wrote to memory of 2592	1980	rundll32.exe	30
PID 1980 wrote to memory of 2592	1980	rundll32.exe	30
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31
PID 2592 wrote to memory of 2432	2592	rundll32.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\aneyji.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\aneyji.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2592
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\aneyji.dll,#1
    3⤵
    - Accesses Microsoft Outlook profiles
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:2432

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

2

T1552

Credentials In Files

2

T1552.001

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

memory/2432-8-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-1-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2432-5-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2432-3-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2432-6-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/2432-7-0x00000000001F0000-0x000000000022C000-memory.dmp

Filesize
240KB

Download
memory/2432-10-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-9-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-11-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/2432-12-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-13-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-14-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2592-0-0x0000000010005000-0x0000000010007000-memory.dmp

Filesize
8KB

Download

Analysis

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