agenttesla | 4ce416ea145d88a3d7c9a699e47f593f91efb8d22c7f818a144789ff77f42e4e

General

Target

olii.exe
Size

270KB
MD5

ba9d3f63058ea4041190e82e03ffd5f6
SHA1

2bd055abacc3b9ad6f7cb1fa8613c7c44fd21943
SHA256

bfb35a39b72e24ce801468a629e64b1806ae5cf8339ade1ee7f145ec4497be93
SHA512

7e2d37dd5921cda5ebff477308644b1a7f1b2586e6792f17d6f59b911dc04ed91db2569032dd9d5f3fa29e9caefb906153336052c256297354cfe73fc58b5462
SSDEEP

6144:wBlL/c5bsFKd4xN3dRWrJYoozpSbRugzPsVKiyJ:Ce5AEa6VYhpSgePQd6

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
behavioral1/memory/2976-9-0x0000000000400000-0x000000000044B000-memory.dmp	family_agenttesla
behavioral1/memory/2976-11-0x0000000000400000-0x000000000044B000-memory.dmp	family_agenttesla
behavioral1/memory/2976-12-0x0000000000400000-0x000000000044B000-memory.dmp	family_agenttesla
behavioral1/memory/2976-13-0x0000000004430000-0x000000000446C000-memory.dmp	family_agenttesla

Loads dropped DLL 1 IoCs

pid	Process
2828	olii.exe

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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	olii.exe
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	olii.exe
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	olii.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2828 set thread context of 2976	2828	olii.exe	30

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2976	olii.exe
2976	olii.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2976	olii.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2828 wrote to memory of 2976	2828	olii.exe	30
PID 2828 wrote to memory of 2976	2828	olii.exe	30
PID 2828 wrote to memory of 2976	2828	olii.exe	30
PID 2828 wrote to memory of 2976	2828	olii.exe	30
PID 2828 wrote to memory of 2976	2828	olii.exe	30
PID 2828 wrote to memory of 2976	2828	olii.exe	30
PID 2828 wrote to memory of 2976	2828	olii.exe	30
PID 2828 wrote to memory of 2976	2828	olii.exe	30
PID 2828 wrote to memory of 2976	2828	olii.exe	30
PID 2828 wrote to memory of 2976	2828	olii.exe	30
PID 2828 wrote to memory of 2976	2828	olii.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	olii.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	olii.exe

C:\Users\Admin\AppData\Local\Temp\olii.exe
"C:\Users\Admin\AppData\Local\Temp\olii.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2828
- C:\Users\Admin\AppData\Local\Temp\olii.exe
  "C:\Users\Admin\AppData\Local\Temp\olii.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2976

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 Information Discovery

1

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

\Users\Admin\AppData\Local\Temp\nseF1DF.tmp\aneyji.dll

Filesize
19KB

MD5
f7a30cb571aa862021ff786169f72a80

SHA1
d002635afeacd67ad2e5764d4dd07e0ec5f49ae3

SHA256
3c3b81e2f3de386bb78562b8005fcc582aa83d1bd5ac99aca14bd235f401c018

SHA512
7fc63a94a72b93ff57645d3e8c92726b7f77976ed5801461bfdaf4638dd8376565dad5f6663d1e0bd064e7521230b2b9f7aae90a5733f387fa003b22b501c69e

Download Submit
memory/2828-7-0x0000000010005000-0x0000000010007000-memory.dmp

Filesize
8KB

Download
memory/2976-9-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2976-11-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2976-12-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2976-13-0x0000000004430000-0x000000000446C000-memory.dmp

Filesize
240KB

Download

Analysis

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