snakekeylogger | f8c1fe21952aca8d7170c335b2c6fa16c20d3589895f9cb3d1a06d1110c06436

General

Target

Halkbank_Ekstre_20221031_075819_154055.exe
Size

1.1MB
MD5

c16f28f1e257a32110dca670fac2c959
SHA1

4c91da1a107ecee2ba32f248b15c4059d2671e8e
SHA256

f8c1fe21952aca8d7170c335b2c6fa16c20d3589895f9cb3d1a06d1110c06436
SHA512

148094d0983a29f767ba0167c078d3561f8100aa1d760996e82ea891cff306de7c4f56650288af705c516a875ff1fdcc05252b12f1e07e6e9126ec24a19f5e6c
SSDEEP

12288:tODa0bWs3zS6Mcbl0B4fozD8VTeHmylTme9knER+0Defs2sFLTAehm8buS89W:H0Ss3zSdcR+D4MfTme9Yf8TAqbD

Score

10^/10

snakekeylogger collection keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot5478319803:AAHq9LkDUFBRvjOub4YfRlPURZxM59_BVnc/sendMessage?chat_id=5516439768

Signatures

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

Snake Keylogger payload 6 IoCs

resource	yara_rule
behavioral1/memory/1220-63-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1220-65-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1220-66-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1220-67-0x00000000004201AE-mapping.dmp	family_snakekeylogger
behavioral1/memory/1220-69-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1220-71-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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
T1081
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20221031_075819_154055.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20221031_075819_154055.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20221031_075819_154055.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.

flow	ioc
4	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1044 set thread context of 1220	1044	Halkbank_Ekstre_20221031_075819_154055.exe	27

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1220	Halkbank_Ekstre_20221031_075819_154055.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1220	Halkbank_Ekstre_20221031_075819_154055.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 1220	1044	Halkbank_Ekstre_20221031_075819_154055.exe	27
PID 1044 wrote to memory of 1220	1044	Halkbank_Ekstre_20221031_075819_154055.exe	27
PID 1044 wrote to memory of 1220	1044	Halkbank_Ekstre_20221031_075819_154055.exe	27
PID 1044 wrote to memory of 1220	1044	Halkbank_Ekstre_20221031_075819_154055.exe	27
PID 1044 wrote to memory of 1220	1044	Halkbank_Ekstre_20221031_075819_154055.exe	27
PID 1044 wrote to memory of 1220	1044	Halkbank_Ekstre_20221031_075819_154055.exe	27
PID 1044 wrote to memory of 1220	1044	Halkbank_Ekstre_20221031_075819_154055.exe	27
PID 1044 wrote to memory of 1220	1044	Halkbank_Ekstre_20221031_075819_154055.exe	27
PID 1044 wrote to memory of 1220	1044	Halkbank_Ekstre_20221031_075819_154055.exe	27

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20221031_075819_154055.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20221031_075819_154055.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20221031_075819_154055.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20221031_075819_154055.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20221031_075819_154055.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20221031_075819_154055.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1220

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1044-54-0x0000000001140000-0x000000000125A000-memory.dmp

Filesize
1.1MB

Download
memory/1044-55-0x0000000075071000-0x0000000075073000-memory.dmp

Filesize
8KB

Download
memory/1044-56-0x00000000003D0000-0x00000000003E4000-memory.dmp

Filesize
80KB

Download
memory/1044-57-0x00000000007F0000-0x00000000007FC000-memory.dmp

Filesize
48KB

Download
memory/1044-58-0x0000000005350000-0x00000000053BC000-memory.dmp

Filesize
432KB

Download
memory/1044-59-0x0000000000EC0000-0x0000000000EF4000-memory.dmp

Filesize
208KB

Download
memory/1220-60-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1220-61-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1220-63-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1220-65-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1220-66-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1220-69-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1220-71-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

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