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/3040-9-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/3040-10-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/3040-13-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/3040-15-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/3040-17-0x0000000000400000-0x0000000000426000-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-1-5-21-1861898231-3446828954-4278112889-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000\Software\Microsoft\Office\15.0\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 3064 set thread context of 3040	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Halkbank_Ekstre_20231128_435212_2535363.pdf.exeHalkbank_Ekstre_20231128_435212_2535363.pdf.exe

pid	process
3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
3040	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
3040	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	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
Token: SeDebugPrivilege	3040	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

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-1-5-21-1861898231-3446828954-4278112889-1000\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-1-5-21-1861898231-3446828954-4278112889-1000\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:3064

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:832

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:2152

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:3040

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/3040-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3040-15-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3040-8-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3040-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3040-20-0x0000000004C20000-0x0000000004C60000-memory.dmp

Filesize
256KB

Download
memory/3040-19-0x0000000074880000-0x0000000074F6E000-memory.dmp

Filesize
6.9MB

Download
memory/3040-17-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3040-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3040-10-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3040-21-0x0000000074880000-0x0000000074F6E000-memory.dmp

Filesize
6.9MB

Download
memory/3040-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3064-2-0x0000000004DB0000-0x0000000004DF0000-memory.dmp

Filesize
256KB

Download
memory/3064-0-0x00000000002D0000-0x000000000035A000-memory.dmp

Filesize
552KB

Download
memory/3064-1-0x0000000074880000-0x0000000074F6E000-memory.dmp

Filesize
6.9MB

Download
memory/3064-6-0x0000000004F70000-0x0000000004FD0000-memory.dmp

Filesize
384KB

Download
memory/3064-18-0x0000000074880000-0x0000000074F6E000-memory.dmp

Filesize
6.9MB

Download
memory/3064-5-0x0000000000360000-0x000000000036A000-memory.dmp

Filesize
40KB

Download
memory/3064-4-0x0000000000290000-0x0000000000298000-memory.dmp

Filesize
32KB

Download
memory/3064-3-0x00000000002B0000-0x00000000002CA000-memory.dmp

Filesize
104KB

Download

description	pid	process	target process
PID 3064 wrote to memory of 832	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 832	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 832	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 832	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 2152	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 2152	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 2152	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 2152	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 3040	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 3040	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 3040	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 3040	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 3040	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 3040	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 3040	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 3040	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 3064 wrote to memory of 3040	3064	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads