snakekeylogger | afea8e29447ebe85480428e2ad947457d515968694dcb5d721886ad1d5945459

General

Target

Ucaai.exe
Size

590KB
MD5

a3128c8b67fd08ae19dd966bef878cb4
SHA1

8e636f183d7185b23f9894bad847d1ada4561252
SHA256

afea8e29447ebe85480428e2ad947457d515968694dcb5d721886ad1d5945459
SHA512

caf3e8071c53c0838514110658a36deff6f90a205b941010537a95f8650181a16ca9c1776e2593bce52cea440fa7348937ff928e28b8553bb0f00201403a8fc5
SSDEEP

12288:4ES8ryazt80P6Etvu/2oALepFUAPU5bJb+a2HbTFDBWELTpKHf:4UJnLepFUAPU59bObTNL/YHf

Score

10^/10

snakekeylogger collection keylogger persistence stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot6356895858:AAHmcm_akjP0cvCFDNWqZ-6D8aFLszf0BKU/sendMessage?chat_id=5262627523

Signatures

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

Snake Keylogger payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3368-10-0x0000000140000000-0x0000000140022000-memory.dmp	family_snakekeylogger
behavioral2/memory/3368-18-0x000001CC36C30000-0x000001CC36C40000-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-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Ucaai.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ddddddd = "C:\\Users\\Admin\\AppData\\Roaming\\ddddddd.exe"	Ucaai.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

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

Processes:

Ucaai.exe

description pid process target process

PID 1540 set thread context of 3368 1540 Ucaai.exe MSBuild.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

MSBuild.exe

pid process

3368 MSBuild.exe
3368 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Ucaai.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1540 Ucaai.exe
Token: SeDebugPrivilege 3368 MSBuild.exe

flow	ioc
56	checkip.dyndns.org

description	pid	process	target process
PID 1540 set thread context of 3368	1540	Ucaai.exe	MSBuild.exe

pid	process
3368	MSBuild.exe
3368	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1540	Ucaai.exe
Token: SeDebugPrivilege	3368	MSBuild.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Ucaai.exe

description	pid	process	target process
PID 1540 wrote to memory of 3368	1540	Ucaai.exe	MSBuild.exe
PID 1540 wrote to memory of 3368	1540	Ucaai.exe	MSBuild.exe
PID 1540 wrote to memory of 3368	1540	Ucaai.exe	MSBuild.exe
PID 1540 wrote to memory of 3368	1540	Ucaai.exe	MSBuild.exe
PID 1540 wrote to memory of 3368	1540	Ucaai.exe	MSBuild.exe
PID 1540 wrote to memory of 3368	1540	Ucaai.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\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-1-5-21-1045988481-1457812719-2617974652-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\Ucaai.exe
"C:\Users\Admin\AppData\Local\Temp\Ucaai.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1540

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1540-8-0x0000022636C90000-0x0000022636CA0000-memory.dmp

Filesize
64KB

Download
memory/1540-4-0x0000022636C30000-0x0000022636C78000-memory.dmp

Filesize
288KB

Download
memory/1540-0-0x000002261C640000-0x000002261C6D8000-memory.dmp

Filesize
608KB

Download
memory/1540-3-0x0000022636C90000-0x0000022636CA0000-memory.dmp

Filesize
64KB

Download
memory/1540-13-0x00007FFA8F520000-0x00007FFA8FFE1000-memory.dmp

Filesize
10.8MB

Download
memory/1540-5-0x0000022636EE0000-0x0000022636F16000-memory.dmp

Filesize
216KB

Download
memory/1540-6-0x0000022636F90000-0x0000022636FDC000-memory.dmp

Filesize
304KB

Download
memory/1540-7-0x00007FFA8F520000-0x00007FFA8FFE1000-memory.dmp

Filesize
10.8MB

Download
memory/1540-2-0x00007FFA8F520000-0x00007FFA8FFE1000-memory.dmp

Filesize
10.8MB

Download
memory/1540-1-0x000002261CA90000-0x000002261CA9A000-memory.dmp

Filesize
40KB

Download
memory/3368-12-0x00007FFA8F520000-0x00007FFA8FFE1000-memory.dmp

Filesize
10.8MB

Download
memory/3368-10-0x0000000140000000-0x0000000140022000-memory.dmp

Filesize
136KB

Download
memory/3368-14-0x000001CC36C30000-0x000001CC36C40000-memory.dmp

Filesize
64KB

Download
memory/3368-15-0x000001CC1E330000-0x000001CC1E380000-memory.dmp

Filesize
320KB

Download
memory/3368-16-0x000001CC37050000-0x000001CC37212000-memory.dmp

Filesize
1.8MB

Download
memory/3368-17-0x00007FFA8F520000-0x00007FFA8FFE1000-memory.dmp

Filesize
10.8MB

Download
memory/3368-18-0x000001CC36C30000-0x000001CC36C40000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads