snakekeylogger | afdecb0b5e945023591f7dc9d1c6e22e4e92d69fda0792b5c0509a28004566dd

General

Target

Request for offer.exe
Size

626KB
MD5

bbc2241c8b26c710dba1bdb4686d6e54
SHA1

b77585f70690e5055e29f6eef85f22045ec74082
SHA256

e3311b58cd5550d55691f8a0cb956d49cd1d59ad10ae119a5e9b62452c652e68
SHA512

a5ec6673174d4623afcbfe7c32d477daa86ad4921b7d1d8949a1cb88b46a368de5601c9cf4c7a09232d5e49fa743fe3a42cc501f4a798cb8290f3ca279239d85
SSDEEP

12288:+5w+f0e7N9Jj0GxvtyIS7R3jmoXV8l4Ol00zVGq2dYAeM:+XZbj0GtwIgRzO4OTI5

Score

10^/10

snakekeylogger collection discovery execution keylogger spyware stealer

Malware Config

Signatures

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

Snake Keylogger payload 5 IoCs

resource	yara_rule
behavioral1/memory/2724-16-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2724-13-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2724-12-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2724-20-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2724-18-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2468	powershell.exe

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
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Request for offer.exe
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Request for offer.exe
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Request for offer.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 2104 set thread context of 2724	2104	Request for offer.exe	34

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	Request for offer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Request for offer.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2104	Request for offer.exe
2104	Request for offer.exe
2104	Request for offer.exe
2104	Request for offer.exe
2724	Request for offer.exe
2468	powershell.exe
2724	Request for offer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2104	Request for offer.exe
Token: SeDebugPrivilege	2724	Request for offer.exe
Token: SeDebugPrivilege	2468	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 2468	2104	Request for offer.exe	31
PID 2104 wrote to memory of 2468	2104	Request for offer.exe	31
PID 2104 wrote to memory of 2468	2104	Request for offer.exe	31
PID 2104 wrote to memory of 2468	2104	Request for offer.exe	31
PID 2104 wrote to memory of 2040	2104	Request for offer.exe	33
PID 2104 wrote to memory of 2040	2104	Request for offer.exe	33
PID 2104 wrote to memory of 2040	2104	Request for offer.exe	33
PID 2104 wrote to memory of 2040	2104	Request for offer.exe	33
PID 2104 wrote to memory of 2724	2104	Request for offer.exe	34
PID 2104 wrote to memory of 2724	2104	Request for offer.exe	34
PID 2104 wrote to memory of 2724	2104	Request for offer.exe	34
PID 2104 wrote to memory of 2724	2104	Request for offer.exe	34
PID 2104 wrote to memory of 2724	2104	Request for offer.exe	34
PID 2104 wrote to memory of 2724	2104	Request for offer.exe	34
PID 2104 wrote to memory of 2724	2104	Request for offer.exe	34
PID 2104 wrote to memory of 2724	2104	Request for offer.exe	34
PID 2104 wrote to memory of 2724	2104	Request for offer.exe	34

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Request for offer.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Request for offer.exe

C:\Users\Admin\AppData\Local\Temp\Request for offer.exe
"C:\Users\Admin\AppData\Local\Temp\Request for offer.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Request for offer.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2468
- C:\Users\Admin\AppData\Local\Temp\Request for offer.exe
  "C:\Users\Admin\AppData\Local\Temp\Request for offer.exe"
  2⤵
  PID:2040
- C:\Users\Admin\AppData\Local\Temp\Request for offer.exe
  "C:\Users\Admin\AppData\Local\Temp\Request for offer.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:2724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2104-21-0x00000000743B0000-0x0000000074A9E000-memory.dmp

Filesize
6.9MB

Download
memory/2104-1-0x0000000000200000-0x00000000002A2000-memory.dmp

Filesize
648KB

Download
memory/2104-2-0x00000000743B0000-0x0000000074A9E000-memory.dmp

Filesize
6.9MB

Download
memory/2104-3-0x0000000000330000-0x0000000000348000-memory.dmp

Filesize
96KB

Download
memory/2104-4-0x00000000743BE000-0x00000000743BF000-memory.dmp

Filesize
4KB

Download
memory/2104-5-0x00000000743B0000-0x0000000074A9E000-memory.dmp

Filesize
6.9MB

Download
memory/2104-6-0x0000000004840000-0x00000000048A8000-memory.dmp

Filesize
416KB

Download
memory/2104-7-0x00000000743B0000-0x0000000074A9E000-memory.dmp

Filesize
6.9MB

Download
memory/2104-0-0x00000000743BE000-0x00000000743BF000-memory.dmp

Filesize
4KB

Download
memory/2724-16-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2724-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2724-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2724-10-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2724-8-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2724-20-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2724-18-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2724-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2724-22-0x00000000743B0000-0x0000000074A9E000-memory.dmp

Filesize
6.9MB

Download
memory/2724-25-0x00000000743B0000-0x0000000074A9E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing