snakekeylogger | 98d4341ff6a0e7e8bcc58c69af784f59bb993089bbfd2709c8a4a3b89df2a724

General

Target

Remittance Advice.exe
Size

351KB
MD5

d110b0f2602558c3d8b88de7cfe037f5
SHA1

5f793d032ab11aca6877ab37df9b4f9c2d681afa
SHA256

6577f5c5150e1dc818be87c2483db10b3af00effc2faf5c1acd174a8db760001
SHA512

ae5a8b3686d68df8bd5bf1ab1c27626d251e119392b0a3b2c40b36b38d2077c3147c4f2e47e9899fe8be9b178d0bd18cda080de06fe007af0245d651f6e2abd9
SSDEEP

6144:N79QdWMg8s6TiYedIEyqS5gSDA8X0w68/lE1nwXvOQNBrrIya/EZD7dU:XsY6Ti7dIEVSOS83b2WQNBvko7m

Score

10^/10

snakekeylogger collection keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

Credentials

Protocol: smtp
Host:
mail.yandex.com
Port:
587
Username:
[email protected]
Password:
chijiokejackson121

C2

https://api.telegram.org/bot5206100572:AAFn3MxBuN0bjQhfY8y1ed9Iwi79LyIe75I/sendMessage?chat_id=2135869667

Signatures

Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
stealer keylogger snakekeylogger

Snake Keylogger payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2784-12-0x0000000000400000-0x0000000000424000-memory.dmp	family_snakekeylogger
behavioral1/memory/2784-13-0x0000000000400000-0x0000000000424000-memory.dmp	family_snakekeylogger
behavioral1/memory/2784-16-0x0000000000400000-0x0000000000424000-memory.dmp	family_snakekeylogger
behavioral1/memory/2784-18-0x0000000000400000-0x0000000000424000-memory.dmp	family_snakekeylogger
behavioral1/memory/2784-20-0x0000000000400000-0x0000000000424000-memory.dmp	family_snakekeylogger

Drops startup file 2 IoCs

Processes:

Powershell.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.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 2 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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Remittance Advice.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Remittance Advice.exe
Key opened	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Remittance Advice.exe
Key opened	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Remittance Advice.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

2 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Remittance Advice.exe

description pid process target process

PID 1776 set thread context of 2784 1776 Remittance Advice.exe Remittance Advice.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Remittance Advice.exePowershell.exe

pid process

2784 Remittance Advice.exe
2640 Powershell.exe
2784 Remittance Advice.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Remittance Advice.exePowershell.exe

description pid process

Token: SeDebugPrivilege 2784 Remittance Advice.exe
Token: SeDebugPrivilege 2640 Powershell.exe

flow	ioc
2	checkip.dyndns.org

description	pid	process	target process
PID 1776 set thread context of 2784	1776	Remittance Advice.exe	Remittance Advice.exe

pid	process
2784	Remittance Advice.exe
2640	Powershell.exe
2784	Remittance Advice.exe

description	pid	process
Token: SeDebugPrivilege	2784	Remittance Advice.exe
Token: SeDebugPrivilege	2640	Powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Remittance Advice.exe

description	pid	process	target process
PID 1776 wrote to memory of 2640	1776	Remittance Advice.exe	Powershell.exe
PID 1776 wrote to memory of 2640	1776	Remittance Advice.exe	Powershell.exe
PID 1776 wrote to memory of 2640	1776	Remittance Advice.exe	Powershell.exe
PID 1776 wrote to memory of 2640	1776	Remittance Advice.exe	Powershell.exe
PID 1776 wrote to memory of 2784	1776	Remittance Advice.exe	Remittance Advice.exe
PID 1776 wrote to memory of 2784	1776	Remittance Advice.exe	Remittance Advice.exe
PID 1776 wrote to memory of 2784	1776	Remittance Advice.exe	Remittance Advice.exe
PID 1776 wrote to memory of 2784	1776	Remittance Advice.exe	Remittance Advice.exe
PID 1776 wrote to memory of 2784	1776	Remittance Advice.exe	Remittance Advice.exe
PID 1776 wrote to memory of 2784	1776	Remittance Advice.exe	Remittance Advice.exe
PID 1776 wrote to memory of 2784	1776	Remittance Advice.exe	Remittance Advice.exe
PID 1776 wrote to memory of 2784	1776	Remittance Advice.exe	Remittance Advice.exe
PID 1776 wrote to memory of 2784	1776	Remittance Advice.exe	Remittance Advice.exe

outlook_office_path 1 IoCs

Processes:

Remittance Advice.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Remittance Advice.exe

outlook_win_path 1 IoCs

Processes:

Remittance Advice.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Remittance Advice.exe

C:\Users\Admin\AppData\Local\Temp\Remittance Advice.exe
"C:\Users\Admin\AppData\Local\Temp\Remittance Advice.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1776

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\Remittance Advice.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2640

C:\Users\Admin\AppData\Local\Temp\Remittance Advice.exe
"C:\Users\Admin\AppData\Local\Temp\Remittance Advice.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1776-0-0x0000000000DA0000-0x0000000000DFE000-memory.dmp

Filesize
376KB

Download
memory/1776-1-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/1776-2-0x00000000005B0000-0x0000000000606000-memory.dmp

Filesize
344KB

Download
memory/1776-8-0x0000000000620000-0x0000000000660000-memory.dmp

Filesize
256KB

Download
memory/1776-9-0x00000000004C0000-0x00000000004CA000-memory.dmp

Filesize
40KB

Download
memory/1776-22-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/2640-5-0x0000000070120000-0x00000000706CB000-memory.dmp

Filesize
5.7MB

Download
memory/2640-6-0x0000000070120000-0x00000000706CB000-memory.dmp

Filesize
5.7MB

Download
memory/2640-7-0x00000000022D0000-0x0000000002310000-memory.dmp

Filesize
256KB

Download
memory/2640-25-0x0000000070120000-0x00000000706CB000-memory.dmp

Filesize
5.7MB

Download
memory/2784-12-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2784-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2784-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2784-16-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2784-18-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2784-20-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2784-21-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/2784-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2784-23-0x0000000000B00000-0x0000000000B40000-memory.dmp

Filesize
256KB

Download
memory/2784-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2784-26-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/2784-27-0x0000000000B00000-0x0000000000B40000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads