snakekeylogger | f4dd38fe1cc238d69c12b35d29b745da5290efca68e8271e4dc80c7a8659c398

General

Target

Tfjnxiks.exe
Size

23KB
MD5

4a92a35506b612f74f70eab6c6e806f2
SHA1

2bb0fd33705a6d7451740de2381035a18d6d7098
SHA256

f4dd38fe1cc238d69c12b35d29b745da5290efca68e8271e4dc80c7a8659c398
SHA512

ea04cac8f1cbc7b5ac4bad1a76ef2d7d31138242693d6f5e2be40c240a18ea9aae16b0a0c054b95bb606831b9d3bd56a732fa960e39b189f080727cd8fd73895
SSDEEP

384:d+unxPcTgGjjS8igT/TnFYuEbhbZEs9bhU1u2bQ1fxwQUNjVrXo:dNnxPcTPfSyTrnFYuihNbhUs2bm+QAB0

Score

10^/10

snakekeylogger collection keylogger stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot5542941782:AAFlsn_FCfYT7D_ZthXK_Udd4a15AE58_Wg/sendMessage?chat_id=2054148913

Signatures

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

Snake Keylogger payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1720-66-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1720-68-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1720-69-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1720-70-0x000000000042017E-mapping.dmp	family_snakekeylogger
behavioral1/memory/1720-72-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1720-74-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.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

7 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Tfjnxiks.exe

description pid process target process

PID 1768 set thread context of 1720 1768 Tfjnxiks.exe MSBuild.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exeMSBuild.exe

pid process

1624 powershell.exe
1720 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Tfjnxiks.exepowershell.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1768 Tfjnxiks.exe
Token: SeDebugPrivilege 1624 powershell.exe
Token: SeDebugPrivilege 1720 MSBuild.exe

flow	ioc
7	checkip.dyndns.org

description	pid	process	target process
PID 1768 set thread context of 1720	1768	Tfjnxiks.exe	MSBuild.exe

pid	process
1624	powershell.exe
1720	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1768	Tfjnxiks.exe
Token: SeDebugPrivilege	1624	powershell.exe
Token: SeDebugPrivilege	1720	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Tfjnxiks.exe

description	pid	process	target process
PID 1768 wrote to memory of 1624	1768	Tfjnxiks.exe	powershell.exe
PID 1768 wrote to memory of 1624	1768	Tfjnxiks.exe	powershell.exe
PID 1768 wrote to memory of 1624	1768	Tfjnxiks.exe	powershell.exe
PID 1768 wrote to memory of 1624	1768	Tfjnxiks.exe	powershell.exe
PID 1768 wrote to memory of 1720	1768	Tfjnxiks.exe	MSBuild.exe
PID 1768 wrote to memory of 1720	1768	Tfjnxiks.exe	MSBuild.exe
PID 1768 wrote to memory of 1720	1768	Tfjnxiks.exe	MSBuild.exe
PID 1768 wrote to memory of 1720	1768	Tfjnxiks.exe	MSBuild.exe
PID 1768 wrote to memory of 1720	1768	Tfjnxiks.exe	MSBuild.exe
PID 1768 wrote to memory of 1720	1768	Tfjnxiks.exe	MSBuild.exe
PID 1768 wrote to memory of 1720	1768	Tfjnxiks.exe	MSBuild.exe
PID 1768 wrote to memory of 1720	1768	Tfjnxiks.exe	MSBuild.exe
PID 1768 wrote to memory of 1720	1768	Tfjnxiks.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\Tfjnxiks.exe
"C:\Users\Admin\AppData\Local\Temp\Tfjnxiks.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1768

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1624

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1720

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1624-58-0x0000000000000000-mapping.dmp

Download
memory/1624-62-0x000000006FAC0000-0x000000007006B000-memory.dmp

Filesize
5.7MB

Download
memory/1624-61-0x000000006FAC0000-0x000000007006B000-memory.dmp

Filesize
5.7MB

Download
memory/1624-60-0x000000006FAC0000-0x000000007006B000-memory.dmp

Filesize
5.7MB

Download
memory/1720-63-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1720-64-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1720-66-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1720-68-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1720-69-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1720-70-0x000000000042017E-mapping.dmp

Download
memory/1720-72-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1720-74-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1768-57-0x00000000050A0000-0x0000000005132000-memory.dmp

Filesize
584KB

Download
memory/1768-56-0x00000000052A0000-0x000000000534A000-memory.dmp

Filesize
680KB

Download
memory/1768-55-0x0000000076961000-0x0000000076963000-memory.dmp

Filesize
8KB

Download
memory/1768-54-0x0000000000030000-0x000000000003C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads