snakekeylogger | 9cf2882c93d6ab624569666974837d2f910412e2e5fcd66f62e655a7448bc693

General

Target

dekontu.exe
Size

1009KB
MD5

5758229f9353e837db35d9556f8c30cb
SHA1

424e24f9de8e1c014d19772ec4c052820c3e36e4
SHA256

9cf2882c93d6ab624569666974837d2f910412e2e5fcd66f62e655a7448bc693
SHA512

bc807007ff2fb7559345310456a81dade83bfe925c7aa896a46d9394124c531adfe9ef387a7cb94c5d3788d4bac1669131d4884725163b1f94e29b760fe97874
SSDEEP

24576:zu6J33O0c+JY5UZ+XC0kGso6FaDBSRT8n7LvoAWY:du0c++OCvkGs9FaDBSRTgXvSY

Score

10^/10

snakekeylogger collection discovery keylogger stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot7525931722:AAHv5VReYz4Tdv44qTVu1nWYViZknndh3TU/sendMessage?chat_id=7361435574

Signatures

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

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/4724-7-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Snakekeylogger family
snakekeylogger

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.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
5	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2736 set thread context of 4724	2736	dekontu.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 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	dekontu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4724	RegSvcs.exe
4724	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2736	dekontu.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4724	RegSvcs.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2736	dekontu.exe
2736	dekontu.exe
2736	dekontu.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2736	dekontu.exe
2736	dekontu.exe
2736	dekontu.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 4724	2736	dekontu.exe	83
PID 2736 wrote to memory of 4724	2736	dekontu.exe	83
PID 2736 wrote to memory of 4724	2736	dekontu.exe	83
PID 2736 wrote to memory of 4724	2736	dekontu.exe	83

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\dekontu.exe
"C:\Users\Admin\AppData\Local\Temp\dekontu.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Users\Admin\AppData\Local\Temp\dekontu.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:4724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2736-6-0x0000000000F10000-0x0000000001310000-memory.dmp

Filesize
4.0MB

Download
memory/4724-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4724-8-0x00000000736BE000-0x00000000736BF000-memory.dmp

Filesize
4KB

Download
memory/4724-9-0x0000000005E90000-0x0000000006434000-memory.dmp

Filesize
5.6MB

Download
memory/4724-10-0x00000000059C0000-0x0000000005A5C000-memory.dmp

Filesize
624KB

Download
memory/4724-11-0x00000000736B0000-0x0000000073E60000-memory.dmp

Filesize
7.7MB

Download
memory/4724-12-0x00000000736BE000-0x00000000736BF000-memory.dmp

Filesize
4KB

Download
memory/4724-13-0x0000000006B90000-0x0000000006BE0000-memory.dmp

Filesize
320KB

Download
memory/4724-14-0x0000000006DB0000-0x0000000006F72000-memory.dmp

Filesize
1.8MB

Download
memory/4724-15-0x0000000006C80000-0x0000000006D12000-memory.dmp

Filesize
584KB

Download
memory/4724-16-0x0000000006C40000-0x0000000006C4A000-memory.dmp

Filesize
40KB

Download
memory/4724-17-0x00000000736B0000-0x0000000073E60000-memory.dmp

Filesize
7.7MB

Download

Analysis

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