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 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2032-11-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2032-13-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2032-17-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2032-21-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2032-19-0x0000000000400000-0x0000000000426000-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_20231127_093256_734631.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3425689832-2386927309-2650718742-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-3425689832-2386927309-2650718742-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-3425689832-2386927309-2650718742-1000\Software\Microsoft\Office\16.0\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

4 checkip.dyndns.org

flow	ioc
4	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734631.pdf.exe

description	pid	process	target process
PID 2280 set thread context of 2032	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734631.pdf.exeHalkbank_Ekstre_20231127_093256_734631.pdf.exe

pid	process
2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
2032	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
2032	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	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
Token: SeDebugPrivilege	2032	Halkbank_Ekstre_20231127_093256_734631.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Halkbank_Ekstre_20231127_093256_734631.pdf.exe

description	pid	process	target process
PID 2280 wrote to memory of 2400	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2400	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2400	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2400	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2032	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2032	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2032	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2032	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2032	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2032	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2032	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2032	2280	Halkbank_Ekstre_20231127_093256_734631.pdf.exe	Halkbank_Ekstre_20231127_093256_734631.pdf.exe
PID 2280 wrote to memory of 2032	2280	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-1-5-21-3425689832-2386927309-2650718742-1000\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-1-5-21-3425689832-2386927309-2650718742-1000\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:2280

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:2400

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:2032

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/2032-17-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2032-21-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2032-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2032-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2032-24-0x0000000004C40000-0x0000000004C80000-memory.dmp

Filesize
256KB

Download
memory/2032-23-0x0000000074520000-0x0000000074C0E000-memory.dmp

Filesize
6.9MB

Download
memory/2032-19-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2032-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2032-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2032-25-0x0000000074520000-0x0000000074C0E000-memory.dmp

Filesize
6.9MB

Download
memory/2032-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2280-2-0x0000000004EB0000-0x0000000004EF0000-memory.dmp

Filesize
256KB

Download
memory/2280-0-0x0000000000830000-0x00000000008D8000-memory.dmp

Filesize
672KB

Download
memory/2280-1-0x0000000074520000-0x0000000074C0E000-memory.dmp

Filesize
6.9MB

Download
memory/2280-6-0x00000000046D0000-0x0000000004730000-memory.dmp

Filesize
384KB

Download
memory/2280-22-0x0000000074520000-0x0000000074C0E000-memory.dmp

Filesize
6.9MB

Download
memory/2280-5-0x0000000000560000-0x000000000056A000-memory.dmp

Filesize
40KB

Download
memory/2280-4-0x00000000003E0000-0x00000000003E8000-memory.dmp

Filesize
32KB

Download
memory/2280-3-0x00000000003C0000-0x00000000003DA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads