snakekeylogger | 3087ad6676cc9169389d5dcbe9328099c9fb386a8e2c0ebaf2eae4c92924e692

General

Target

Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
Size

578KB
MD5

e774b25a7a8751c5725ed2ba1dede243
SHA1

71e7a04a9d9448d2da4c353642829edcc8fdcb67
SHA256

3087ad6676cc9169389d5dcbe9328099c9fb386a8e2c0ebaf2eae4c92924e692
SHA512

8d825a39760d2792b2b0a0403f781963167642e936e4b857c2c34144fe8c16b4b6fd7abb0c83c89999af5652c73151d39b9c45327fb75ffde866dc0f41aa5908
SSDEEP

12288:Tjqcopox437NBg4OChLjFg/r8tn2FLXNFT3xOg8cqWdE:Ze3Hg43hLBio2FLXNB3xOgQoE

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 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1640-9-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1640-10-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1640-13-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1640-15-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1640-18-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1640-20-0x0000000004C00000-0x0000000004C40000-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_20231129_434343_4432123.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_20231129_434343_4432123.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_20231129_434343_4432123.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_20231129_434343_4432123.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_20231129_434343_4432123.pdf.exe

description	pid	process	target process
PID 2828 set thread context of 1640	2828	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Halkbank_Ekstre_20231129_434343_4432123.pdf.exe

pid process

1640 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
1640 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Halkbank_Ekstre_20231129_434343_4432123.pdf.exe

description pid process

Token: SeDebugPrivilege 1640 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe

pid	process
1640	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
1640	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe

description	pid	process
Token: SeDebugPrivilege	1640	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Halkbank_Ekstre_20231129_434343_4432123.pdf.exe

description	pid	process	target process
PID 2828 wrote to memory of 1640	2828	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
PID 2828 wrote to memory of 1640	2828	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
PID 2828 wrote to memory of 1640	2828	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
PID 2828 wrote to memory of 1640	2828	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
PID 2828 wrote to memory of 1640	2828	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
PID 2828 wrote to memory of 1640	2828	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
PID 2828 wrote to memory of 1640	2828	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
PID 2828 wrote to memory of 1640	2828	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
PID 2828 wrote to memory of 1640	2828	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe	Halkbank_Ekstre_20231129_434343_4432123.pdf.exe

outlook_office_path 1 IoCs

Processes:

Halkbank_Ekstre_20231129_434343_4432123.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_20231129_434343_4432123.pdf.exe

outlook_win_path 1 IoCs

Processes:

Halkbank_Ekstre_20231129_434343_4432123.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_20231129_434343_4432123.pdf.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_434343_4432123.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2828

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_434343_4432123.pdf.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1640

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/1640-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1640-22-0x0000000004C00000-0x0000000004C40000-memory.dmp

Filesize
256KB

Download
memory/1640-21-0x0000000074EB0000-0x000000007559E000-memory.dmp

Filesize
6.9MB

Download
memory/1640-20-0x0000000004C00000-0x0000000004C40000-memory.dmp

Filesize
256KB

Download
memory/1640-19-0x0000000074EB0000-0x000000007559E000-memory.dmp

Filesize
6.9MB

Download
memory/1640-18-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1640-15-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1640-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1640-8-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1640-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1640-10-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1640-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2828-5-0x00000000004A0000-0x00000000004AA000-memory.dmp

Filesize
40KB

Download
memory/2828-6-0x0000000004600000-0x0000000004660000-memory.dmp

Filesize
384KB

Download
memory/2828-0-0x00000000002C0000-0x0000000000356000-memory.dmp

Filesize
600KB

Download
memory/2828-17-0x0000000074EB0000-0x000000007559E000-memory.dmp

Filesize
6.9MB

Download
memory/2828-4-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2828-3-0x00000000004F0000-0x0000000000508000-memory.dmp

Filesize
96KB

Download
memory/2828-2-0x0000000004C50000-0x0000000004C90000-memory.dmp

Filesize
256KB

Download
memory/2828-1-0x0000000074EB0000-0x000000007559E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads