snakekeylogger | 5ed393d1e048cf31f1eab079a58ef7e089dcd5376cf4f2789281ccb0a3ce71e0

General

Target

ekstre.pdf.exe
Size

491KB
MD5

7e489c990749ef292c4d2bb492229d33
SHA1

bb912cefcbe835e760b7b23541614c632b5386ca
SHA256

a90064fabd3a584e530137cca993bdb15ea853afadceee02d80a5f46601255ea
SHA512

722a537217da520f7d956c5cead9dd2eef1656e6f3e3c48ceb4330c9af3fd10f0f4d9960da9872567d7f3815393745c5da23543a174271ce6f797fcf7a666e09
SSDEEP

12288:ZWgIcViPGnn1LovLpbclh4ONHAzkHcuoRBZYI0fabMpa:MgsPmK1chtNsAc0IPYQ

Score

10^/10

snakekeylogger collection discovery keylogger stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot7125297965:AAFl6eQAjxqGeAfWHpfHbGAtADDAZUyFidM/sendMessage?chat_id=6367688286

Signatures

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

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/3696-4-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Snakekeylogger family
snakekeylogger

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regsvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regsvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regsvcs.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.

flow	ioc
7	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2864 set thread context of 3696	2864	ekstre.pdf.exe	84

System Location Discovery: System Language Discovery 1 TTPs 1 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	regsvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3696	regsvcs.exe
3696	regsvcs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3696	regsvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2864 wrote to memory of 3696	2864	ekstre.pdf.exe	84
PID 2864 wrote to memory of 3696	2864	ekstre.pdf.exe	84
PID 2864 wrote to memory of 3696	2864	ekstre.pdf.exe	84
PID 2864 wrote to memory of 3696	2864	ekstre.pdf.exe	84
PID 2864 wrote to memory of 3696	2864	ekstre.pdf.exe	84
PID 2864 wrote to memory of 3696	2864	ekstre.pdf.exe	84
PID 2864 wrote to memory of 3696	2864	ekstre.pdf.exe	84
PID 2864 wrote to memory of 3696	2864	ekstre.pdf.exe	84
PID 2864 wrote to memory of 1900	2864	ekstre.pdf.exe	85
PID 2864 wrote to memory of 1900	2864	ekstre.pdf.exe	85
PID 2864 wrote to memory of 1900	2864	ekstre.pdf.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regsvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regsvcs.exe

C:\Users\Admin\AppData\Local\Temp\ekstre.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\ekstre.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2864
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.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:3696
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
  2⤵
  PID:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2864-0-0x00007FF8739D3000-0x00007FF8739D5000-memory.dmp

Filesize
8KB

Download
memory/2864-1-0x000001D580330000-0x000001D5803AE000-memory.dmp

Filesize
504KB

Download
memory/2864-2-0x000001D580790000-0x000001D58080A000-memory.dmp

Filesize
488KB

Download
memory/2864-3-0x00007FF8739D0000-0x00007FF874491000-memory.dmp

Filesize
10.8MB

Download
memory/2864-9-0x00007FF8739D0000-0x00007FF874491000-memory.dmp

Filesize
10.8MB

Download
memory/3696-8-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/3696-6-0x0000000005570000-0x0000000005B14000-memory.dmp

Filesize
5.6MB

Download
memory/3696-7-0x0000000005060000-0x00000000050FC000-memory.dmp

Filesize
624KB

Download
memory/3696-5-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/3696-4-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3696-10-0x0000000006340000-0x0000000006390000-memory.dmp

Filesize
320KB

Download
memory/3696-11-0x0000000006560000-0x0000000006722000-memory.dmp

Filesize
1.8MB

Download
memory/3696-12-0x0000000006430000-0x00000000064C2000-memory.dmp

Filesize
584KB

Download
memory/3696-13-0x00000000063D0000-0x00000000063DA000-memory.dmp

Filesize
40KB

Download
memory/3696-14-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/3696-15-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download

Analysis

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