snakekeylogger | 14d85ed5d393839b550f5a8c2fd37a1a3ddb70e802b77f7b433f3c2ff34c635d

General

Target

Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
Size

532KB
MD5

3c55772d1d2d8e233a8134fdafaa172d
SHA1

d64bef49731e6048fbd78451e4ec2ee7d425143a
SHA256

14d85ed5d393839b550f5a8c2fd37a1a3ddb70e802b77f7b433f3c2ff34c635d
SHA512

ab946c3994d74d92765d1ca7fc02c9b4a808801b52435482e2b815e6adf6c37f787659b12cbbf43d2e5d8121caa2b1bcc63cd0999f3f7f968a15e748fdff028c
SSDEEP

12288:hiZCQmbCpQN8oOVTBqmC/tttm2hH2UJS77GMM6m1jSsGI:M4N8R5Bu/tfLhH2UAHtDsG

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/2728-13-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2728-11-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2728-17-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2728-21-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2728-19-0x0000000000400000-0x0000000000426000-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_20231128_435212_2535363.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_20231128_435212_2535363.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_20231128_435212_2535363.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_20231128_435212_2535363.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_20231128_435212_2535363.pdf.exe

description	pid	process	target process
PID 2780 set thread context of 2728	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Halkbank_Ekstre_20231128_435212_2535363.pdf.exeHalkbank_Ekstre_20231128_435212_2535363.pdf.exe

pid	process
2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
2728	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
2728	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Halkbank_Ekstre_20231128_435212_2535363.pdf.exeHalkbank_Ekstre_20231128_435212_2535363.pdf.exe

description	pid	process
Token: SeDebugPrivilege	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
Token: SeDebugPrivilege	2728	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

description	pid	process	target process
PID 2780 wrote to memory of 2720	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2720	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2720	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2720	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2728	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2728	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2728	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2728	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2728	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2728	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2728	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2728	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 2780 wrote to memory of 2728	2780	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

outlook_office_path 1 IoCs

Processes:

Halkbank_Ekstre_20231128_435212_2535363.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_20231128_435212_2535363.pdf.exe

outlook_win_path 1 IoCs

Processes:

Halkbank_Ekstre_20231128_435212_2535363.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_20231128_435212_2535363.pdf.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231128_435212_2535363.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2780

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231128_435212_2535363.pdf.exe"
2⤵
PID:2720

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231128_435212_2535363.pdf.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2728

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

Replay Monitor

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Downloads

memory/2728-17-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2728-21-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2728-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2728-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2728-24-0x0000000004BE0000-0x0000000004C20000-memory.dmp

Filesize
256KB

Download
memory/2728-22-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2728-19-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2728-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2728-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2728-25-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2728-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2780-2-0x0000000004B60000-0x0000000004BA0000-memory.dmp

Filesize
256KB

Download
memory/2780-0-0x0000000000FF0000-0x000000000107A000-memory.dmp

Filesize
552KB

Download
memory/2780-1-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2780-6-0x00000000059D0000-0x0000000005A30000-memory.dmp

Filesize
384KB

Download
memory/2780-5-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2780-23-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2780-4-0x0000000000390000-0x0000000000398000-memory.dmp

Filesize
32KB

Download
memory/2780-3-0x0000000000560000-0x000000000057A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads