snakekeylogger | 5b67a54df45cc6e181388808f9cb35b0c2660d27b895889da37938408fe22072

General

Target

Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
Size

853KB
MD5

58d456f97f54cfda39bd01159fa5795c
SHA1

ee224f8e2a01b12aff75c22414f835b4b530dfb0
SHA256

5b67a54df45cc6e181388808f9cb35b0c2660d27b895889da37938408fe22072
SHA512

736d3f96b95a268ef1bf38e17d08100209c07fc1eb82244e9aef6e574afec5c2ce004173ed3973866a037f1fe68d8a681d5c071bdd6f4c944b836fe38002cc69
SSDEEP

12288:gv51Z2pNKbO4NW87Jz4XPD4ukjuZM/LBxKQIZjU:cPZ2pgbOKx4XL4MZM/LP

Score

10^/10

snakekeylogger collection keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot1513074805:AAE9QtTNfInovOlDzP4PcE-Ro12KxYiz9Z4/sendMessage?chat_id=1673719962

Signatures

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

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/1164-140-0x0000000000400000-0x0000000000426000-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-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20230516_0819705_452378.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.

flow	ioc
30	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4144 set thread context of 1164	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	94

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
1164	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
Token: SeDebugPrivilege	1164	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4144 wrote to memory of 3056	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	91
PID 4144 wrote to memory of 3056	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	91
PID 4144 wrote to memory of 3056	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	91
PID 4144 wrote to memory of 3304	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	92
PID 4144 wrote to memory of 3304	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	92
PID 4144 wrote to memory of 3304	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	92
PID 4144 wrote to memory of 2848	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	93
PID 4144 wrote to memory of 2848	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	93
PID 4144 wrote to memory of 2848	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	93
PID 4144 wrote to memory of 1164	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	94
PID 4144 wrote to memory of 1164	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	94
PID 4144 wrote to memory of 1164	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	94
PID 4144 wrote to memory of 1164	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	94
PID 4144 wrote to memory of 1164	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	94
PID 4144 wrote to memory of 1164	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	94
PID 4144 wrote to memory of 1164	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	94
PID 4144 wrote to memory of 1164	4144	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20230516_0819705_452378.pdf.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4144
- C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe"
  2⤵
  PID:3056
- C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe"
  2⤵
  PID:3304
- C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe"
  2⤵
  PID:2848
- C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1164

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Halkbank_Ekstre_20230516_0819705_452378.pdf.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/1164-140-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1164-143-0x0000000002770000-0x0000000002780000-memory.dmp

Filesize
64KB

Download
memory/1164-144-0x0000000006360000-0x0000000006522000-memory.dmp

Filesize
1.8MB

Download
memory/1164-145-0x0000000002770000-0x0000000002780000-memory.dmp

Filesize
64KB

Download
memory/4144-133-0x0000000000A30000-0x0000000000B0C000-memory.dmp

Filesize
880KB

Download
memory/4144-134-0x0000000005BC0000-0x0000000006164000-memory.dmp

Filesize
5.6MB

Download
memory/4144-135-0x00000000054C0000-0x0000000005552000-memory.dmp

Filesize
584KB

Download
memory/4144-136-0x0000000003150000-0x000000000315A000-memory.dmp

Filesize
40KB

Download
memory/4144-137-0x0000000005730000-0x0000000005740000-memory.dmp

Filesize
64KB

Download
memory/4144-138-0x0000000005730000-0x0000000005740000-memory.dmp

Filesize
64KB

Download
memory/4144-139-0x0000000006EE0000-0x0000000006F7C000-memory.dmp

Filesize
624KB

Download

Analysis

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