snakekeylogger | 1b4b22ab1d8d89a1d60371e7399b30dc74c0d2e5b1a83b46cc0a2ae95e6da667

General

Target

Halkbank_Ekstre_20231127_093256_734136.pdf.exe
Size

720KB
MD5

f807d8a57e882d42638b68750167e6ab
SHA1

fb61665d0cf5fbaad74d093e1e3c5750f09b4cc1
SHA256

1b4b22ab1d8d89a1d60371e7399b30dc74c0d2e5b1a83b46cc0a2ae95e6da667
SHA512

27c90ec301cfa65056491392e0c2c67915dfbcc3ce3b2a21624c577445a3629ebcec8f40a30e2641a5f4bd31883e1040fe0f74f7cd5e04e040150078f44ee0fd
SSDEEP

12288:Qti1KYlsa9qaLlT7Aj+HGTSrK9lZt5voMrk72SKQkGI195d7BR6wTtE6jD/:QMv9qaLJAj4rI3e2SSGYfpBhtD/

Score

10^/10

snakekeylogger collection keylogger spyware stealer

Malware Config

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/2968-10-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2968-9-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2968-13-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2968-17-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2968-15-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

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:

Halkbank_Ekstre_20231127_093256_734136.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734136.pdf.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

4 checkip.dyndns.org

flow	ioc
4	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734136.pdf.exe

description	pid	process	target process
PID 2372 set thread context of 2968	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734136.pdf.exeHalkbank_Ekstre_20231127_093256_734136.pdf.exe

pid	process
2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
2968	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
2968	Halkbank_Ekstre_20231127_093256_734136.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734136.pdf.exeHalkbank_Ekstre_20231127_093256_734136.pdf.exe

description	pid	process
Token: SeDebugPrivilege	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
Token: SeDebugPrivilege	2968	Halkbank_Ekstre_20231127_093256_734136.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734136.pdf.exe

description	pid	process	target process
PID 2372 wrote to memory of 2520	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2520	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2520	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2520	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2968	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2968	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2968	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2968	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2968	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2968	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2968	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2968	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe
PID 2372 wrote to memory of 2968	2372	Halkbank_Ekstre_20231127_093256_734136.pdf.exe	Halkbank_Ekstre_20231127_093256_734136.pdf.exe

outlook_office_path 1 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734136.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734136.pdf.exe

outlook_win_path 1 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734136.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734136.pdf.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734136.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734136.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2372

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734136.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734136.pdf.exe"
2⤵
PID:2520

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734136.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734136.pdf.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2968

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/2372-0-0x0000000000B00000-0x0000000000BBA000-memory.dmp

Filesize
744KB

Download
memory/2372-1-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/2372-2-0x0000000004BF0000-0x0000000004C30000-memory.dmp

Filesize
256KB

Download
memory/2372-3-0x00000000005D0000-0x00000000005EA000-memory.dmp

Filesize
104KB

Download
memory/2372-4-0x0000000000580000-0x0000000000588000-memory.dmp

Filesize
32KB

Download
memory/2372-5-0x00000000005F0000-0x00000000005FA000-memory.dmp

Filesize
40KB

Download
memory/2372-6-0x0000000004AB0000-0x0000000004B10000-memory.dmp

Filesize
384KB

Download
memory/2372-19-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/2968-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2968-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2968-10-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2968-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2968-8-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2968-17-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2968-15-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2968-18-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/2968-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2968-20-0x0000000002380000-0x00000000023C0000-memory.dmp

Filesize
256KB

Download
memory/2968-21-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/2968-22-0x0000000002380000-0x00000000023C0000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads