snakekeylogger | 77224cecffb3caa25a9a6da433aef450f32e9ef67af70669b4ddd7a92c24c2ca

General

Target

Halkbank_Ekstre_20231127_093256_734631.pdf.exe
Size

643KB
MD5

f5c860c3291dfdd1e53d616d4e237afb
SHA1

c2727013047c56dc71300bd0bc7f5bc84ef5e7cb
SHA256

77224cecffb3caa25a9a6da433aef450f32e9ef67af70669b4ddd7a92c24c2ca
SHA512

fd7130389abf2ef10c7c33888e60838bee488a3119ca1f31915c60c9cd98baa470e64499e9b853c1af5290f4a9a83a1783877073228c3eedb915b2e70f3134b7
SSDEEP

12288:nxB2Q8fm/xBew2uQAylI3ifmihK3gGuXBH19Uwd7BR6wT:nxBHxIP/zzKZuLWwpB

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 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3808-12-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral2/memory/3808-16-0x00000000053A0000-0x00000000053B0000-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_734631.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734631.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

21 checkip.dyndns.org

flow	ioc
21	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734631.pdf.exe

description	pid	process	target process
PID 4316 set thread context of 3808	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734631.pdf.exeHalkbank_Ekstre_20231127_093256_734631.pdf.exe

pid	process
4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
3808	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
3808	Halkbank_Ekstre_20231127_093256_734631.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734631.pdf.exeHalkbank_Ekstre_20231127_093256_734631.pdf.exe

description	pid	process
Token: SeDebugPrivilege	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
Token: SeDebugPrivilege	3808	Halkbank_Ekstre_20231127_093256_734631.pdf.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734631.pdf.exe

description	pid	process	target process
PID 4316 wrote to memory of 4772	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 4316 wrote to memory of 4772	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 4316 wrote to memory of 4772	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 4316 wrote to memory of 3808	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 4316 wrote to memory of 3808	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 4316 wrote to memory of 3808	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 4316 wrote to memory of 3808	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 4316 wrote to memory of 3808	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 4316 wrote to memory of 3808	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 4316 wrote to memory of 3808	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 4316 wrote to memory of 3808	4316	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe

outlook_office_path 1 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734631.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734631.pdf.exe

outlook_win_path 1 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734631.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734631.pdf.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734631.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734631.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4316

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734631.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734631.pdf.exe"
2⤵
PID:4772

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734631.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231127_093256_734631.pdf.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3808

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Halkbank_Ekstre_20231127_093256_734631.pdf.exe.log

Filesize
1KB

MD5
8cb8dbbb019a535fe00246c7afdb4270

SHA1
7d4fd9f302e4fc68a6fc3f95f0513c471ebfbb50

SHA256
2c4f3f1d603c33e8410ce061380ec7a1772db21bdc4b01d3ca4067500a391f86

SHA512
abc0cc34903b4d91f9f48ced799ee8019dcaa52f852e2b33cab42e92c3fd80a4ff2c71c12734836288c26165a77daa60badb6f0cc45ee8b6e1b431d3b1952a44

Download Submit
memory/3808-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3808-21-0x00000000053A0000-0x00000000053B0000-memory.dmp

Filesize
64KB

Download
memory/3808-20-0x0000000074560000-0x0000000074D10000-memory.dmp

Filesize
7.7MB

Download
memory/3808-19-0x0000000006A00000-0x0000000006BC2000-memory.dmp

Filesize
1.8MB

Download
memory/3808-18-0x00000000067E0000-0x0000000006830000-memory.dmp

Filesize
320KB

Download
memory/3808-16-0x00000000053A0000-0x00000000053B0000-memory.dmp

Filesize
64KB

Download
memory/3808-15-0x0000000074560000-0x0000000074D10000-memory.dmp

Filesize
7.7MB

Download
memory/4316-5-0x0000000005390000-0x00000000053A0000-memory.dmp

Filesize
64KB

Download
memory/4316-9-0x0000000004BB0000-0x0000000004BBA000-memory.dmp

Filesize
40KB

Download
memory/4316-10-0x0000000006D20000-0x0000000006D80000-memory.dmp

Filesize
384KB

Download
memory/4316-11-0x0000000007E20000-0x0000000007EBC000-memory.dmp

Filesize
624KB

Download
memory/4316-8-0x00000000056A0000-0x00000000056A8000-memory.dmp

Filesize
32KB

Download
memory/4316-7-0x0000000005530000-0x000000000554A000-memory.dmp

Filesize
104KB

Download
memory/4316-6-0x00000000051F0000-0x00000000051FA000-memory.dmp

Filesize
40KB

Download
memory/4316-0-0x0000000074560000-0x0000000074D10000-memory.dmp

Filesize
7.7MB

Download
memory/4316-17-0x0000000074560000-0x0000000074D10000-memory.dmp

Filesize
7.7MB

Download
memory/4316-4-0x0000000005280000-0x000000000532A000-memory.dmp

Filesize
680KB

Download
memory/4316-3-0x0000000005130000-0x00000000051C2000-memory.dmp

Filesize
584KB

Download
memory/4316-2-0x00000000056E0000-0x0000000005C84000-memory.dmp

Filesize
5.6MB

Download
memory/4316-1-0x00000000006E0000-0x0000000000788000-memory.dmp

Filesize
672KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads