snakekeylogger | f4cec6defabe17d2867150709adcb2e901d708a137c74849c58eaff55ea443f7

General

Target

Halkbank Ekstre.exe
Size

636KB
MD5

5ca0edb9c8da5f99b88f6a230a838ff7
SHA1

201063e16865940a4482139c8a22a4f7728a3f7f
SHA256

454cda22d2e5b8dec8f70c430c0c4cfec75b4d29885ef343e84b9a2265363601
SHA512

9e587ddad60decf3e5c4254f786b231fe52fa4e26a399fd657f635525e35abf6a15b4133b1ee61a519bef3896117d357c2c6d6fea5acdd971527d5b450db086f
SSDEEP

12288:+AFtkqjSR80CJK3nnh2Q6Egc5uyNT3XNzVYxk0F:+c8CJY2Q0c5uy9XvYxk

Score

10^/10

snakekeylogger collection discovery execution keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

Credentials

Protocol: smtp
Host:
mail.puragenicindia.com
Port:
587
Username:
[email protected]
Password:
bobbyj2016@bobbyj2016@

Signatures

Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
stealer keylogger snakekeylogger

Snake Keylogger payload 5 IoCs

resource	yara_rule
behavioral1/memory/1488-22-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1488-19-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1488-17-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1488-13-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1488-11-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Snakekeylogger family
snakekeylogger

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2920	powershell.exe

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 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank Ekstre.exe
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank Ekstre.exe
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank Ekstre.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	checkip.dyndns.org
8	reallyfreegeoip.org
9	reallyfreegeoip.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2296 set thread context of 1488	2296	Halkbank Ekstre.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Halkbank Ekstre.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Halkbank Ekstre.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1488	Halkbank Ekstre.exe
2920	powershell.exe
1488	Halkbank Ekstre.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1488	Halkbank Ekstre.exe
Token: SeDebugPrivilege	2920	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 2920	2296	Halkbank Ekstre.exe	31
PID 2296 wrote to memory of 2920	2296	Halkbank Ekstre.exe	31
PID 2296 wrote to memory of 2920	2296	Halkbank Ekstre.exe	31
PID 2296 wrote to memory of 2920	2296	Halkbank Ekstre.exe	31
PID 2296 wrote to memory of 1488	2296	Halkbank Ekstre.exe	33
PID 2296 wrote to memory of 1488	2296	Halkbank Ekstre.exe	33
PID 2296 wrote to memory of 1488	2296	Halkbank Ekstre.exe	33
PID 2296 wrote to memory of 1488	2296	Halkbank Ekstre.exe	33
PID 2296 wrote to memory of 1488	2296	Halkbank Ekstre.exe	33
PID 2296 wrote to memory of 1488	2296	Halkbank Ekstre.exe	33
PID 2296 wrote to memory of 1488	2296	Halkbank Ekstre.exe	33
PID 2296 wrote to memory of 1488	2296	Halkbank Ekstre.exe	33
PID 2296 wrote to memory of 1488	2296	Halkbank Ekstre.exe	33

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank Ekstre.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank Ekstre.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank Ekstre.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank Ekstre.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Halkbank Ekstre.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2920
- C:\Users\Admin\AppData\Local\Temp\Halkbank Ekstre.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank Ekstre.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1488-24-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/1488-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1488-19-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1488-28-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/1488-17-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1488-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1488-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1488-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1488-29-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/1488-25-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/1488-22-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1488-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2296-6-0x0000000000360000-0x00000000003CC000-memory.dmp

Filesize
432KB

Download
memory/2296-1-0x0000000001200000-0x00000000012A6000-memory.dmp

Filesize
664KB

Download
memory/2296-5-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/2296-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

Filesize
4KB

Download
memory/2296-23-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/2296-4-0x00000000747AE000-0x00000000747AF000-memory.dmp

Filesize
4KB

Download
memory/2296-3-0x0000000000450000-0x000000000046E000-memory.dmp

Filesize
120KB

Download
memory/2296-2-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download

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