5b00fb007aa5f32d3988915ca620dcd2b8b294ab6c15351f875bc51bc8d609a4

General

Target

ONUS (4).exe
Size

219KB
MD5

4b571a5241c60fe43fe3819c6a9df813
SHA1

f6b2bd4a102e538b6b45a1d563304b831d2a9a9b
SHA256

0cc08a3fc33db7ed2075e49ac59ce9204a21ec8f2fe13559cbdc9cb77ca99289
SHA512

31740552db3de6b198960fb5c95794eda52b5bbf5f393eb053bd98c21d88258e34ea55fcde754b4173ed91bced87242f3d0f8dd3c93fed7c24c7810516e87e89
SSDEEP

3072:QArRIzPm7i7x2KhtCqE5bpcqiieyAd9g8QwyZ0+tvCiJ86AR+xx7CG9eeIUV:r4PO62KI5dcdield9grw0BH866cZeV

Score

7^/10

collection discovery spyware stealer

Malware Config

Signatures

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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	checkip.dyndns.org
8	reallyfreegeoip.org
9	reallyfreegeoip.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2772 set thread context of 2736	2772	ONUS (4).exe	30

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	ONUS (4).exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2736	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2736	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30
PID 2772 wrote to memory of 2736	2772	ONUS (4).exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\ONUS (4).exe
"C:\Users\Admin\AppData\Local\Temp\ONUS (4).exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.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:2736

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/2736-10-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2736-9-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2736-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2736-7-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2736-13-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2736-6-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2736-15-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2736-17-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2772-1-0x0000000000870000-0x00000000008AE000-memory.dmp

Filesize
248KB

Download
memory/2772-0-0x0000000073D1E000-0x0000000073D1F000-memory.dmp

Filesize
4KB

Download
memory/2772-4-0x0000000073D10000-0x00000000743FE000-memory.dmp

Filesize
6.9MB

Download
memory/2772-3-0x0000000000450000-0x0000000000462000-memory.dmp

Filesize
72KB

Download
memory/2772-2-0x0000000000340000-0x0000000000376000-memory.dmp

Filesize
216KB

Download
memory/2772-18-0x0000000073D10000-0x00000000743FE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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