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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4956-11-0x0000000000400000-0x0000000000426000-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-1-5-21-3028534956-1709433221-1313273668-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-3028534956-1709433221-1313273668-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-3028534956-1709433221-1313273668-1000\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

19 checkip.dyndns.org

flow	ioc
19	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

description	pid	process	target process
PID 4076 set thread context of 4956	4076	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
4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
4956	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
4956	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	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
Token: SeDebugPrivilege	4956	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Halkbank_Ekstre_20231128_435212_2535363.pdf.exe

description	pid	process	target process
PID 4076 wrote to memory of 4744	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 4076 wrote to memory of 4744	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 4076 wrote to memory of 4744	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 4076 wrote to memory of 4956	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 4076 wrote to memory of 4956	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 4076 wrote to memory of 4956	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 4076 wrote to memory of 4956	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 4076 wrote to memory of 4956	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 4076 wrote to memory of 4956	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 4076 wrote to memory of 4956	4076	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe	Halkbank_Ekstre_20231128_435212_2535363.pdf.exe
PID 4076 wrote to memory of 4956	4076	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-1-5-21-3028534956-1709433221-1313273668-1000\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-1-5-21-3028534956-1709433221-1313273668-1000\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:4076

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:4744

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:4956

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_20231128_435212_2535363.pdf.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/4076-10-0x000000000FE30000-0x000000000FECC000-memory.dmp

Filesize
624KB

Download
memory/4076-14-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/4076-9-0x000000000C760000-0x000000000C7C0000-memory.dmp

Filesize
384KB

Download
memory/4076-4-0x00000000058F0000-0x0000000005900000-memory.dmp

Filesize
64KB

Download
memory/4076-5-0x0000000005940000-0x000000000594A000-memory.dmp

Filesize
40KB

Download
memory/4076-6-0x0000000005C00000-0x0000000005C1A000-memory.dmp

Filesize
104KB

Download
memory/4076-7-0x0000000005DC0000-0x0000000005DC8000-memory.dmp

Filesize
32KB

Download
memory/4076-8-0x0000000005DD0000-0x0000000005DDA000-memory.dmp

Filesize
40KB

Download
memory/4076-3-0x0000000005950000-0x00000000059E2000-memory.dmp

Filesize
584KB

Download
memory/4076-2-0x0000000006040000-0x00000000065E4000-memory.dmp

Filesize
5.6MB

Download
memory/4076-1-0x0000000000F00000-0x0000000000F8A000-memory.dmp

Filesize
552KB

Download
memory/4076-0-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/4956-20-0x00000000056C0000-0x00000000056D0000-memory.dmp

Filesize
64KB

Download
memory/4956-15-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/4956-16-0x00000000056C0000-0x00000000056D0000-memory.dmp

Filesize
64KB

Download
memory/4956-17-0x0000000006CD0000-0x0000000006D20000-memory.dmp

Filesize
320KB

Download
memory/4956-18-0x0000000006EF0000-0x00000000070B2000-memory.dmp

Filesize
1.8MB

Download
memory/4956-19-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/4956-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads