snakekeylogger | fcde1a9f1b5ebaaca80704a3b8b1de31bcea199cb1e935748c5e87a7264cd948

General

Target

fcde1a9f1b5ebaaca80704a3b8b1de31bcea199cb1e935748c5e87a7264cd948.rtf
Size

639KB
MD5

8e6d90f75e321a2a164fcb417dfce456
SHA1

a5210f5280396d3fe9b98262c00b94c5b111d2a6
SHA256

fcde1a9f1b5ebaaca80704a3b8b1de31bcea199cb1e935748c5e87a7264cd948
SHA512

b9b998b02847442a92c48ae0c066f74ca472a67cfa44e554d587bef883eb4466d6818c6020f98731f9c0db0160927bbd2a70d23ee5411c4b2b8674fb3c2e6308
SSDEEP

3072:OwAlawAlnoAzG9swFSQjkbYArXuFHkcDtQX4I8f1/:OwAYwAuAzwPSQjkbYA6F5tQX4I8f1/

Score

10^/10

snakekeylogger collection discovery execution keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot7013350856:AAEMW-L9OH6xJPBSHadxtnabC3gFbH_e250/sendMessage?chat_id=7239159003

Signatures

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

Snake Keylogger payload 5 IoCs

resource	yara_rule
behavioral1/memory/2052-39-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2052-38-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2052-36-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2052-33-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2052-31-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	2164	EQNEDT32.EXE

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
2240	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2892	catgacy20306.exe
2052	catgacy20306.exe

Loads dropped DLL 1 IoCs

pid	Process
2164	EQNEDT32.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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	catgacy20306.exe
Key opened	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	catgacy20306.exe
Key opened	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	catgacy20306.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

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2892 set thread context of 2052	2892	catgacy20306.exe	37

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

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 5 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	catgacy20306.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	catgacy20306.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
2164	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2152	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2052	catgacy20306.exe
2240	powershell.exe
2052	catgacy20306.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2052	catgacy20306.exe
Token: SeDebugPrivilege	2240	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2152	WINWORD.EXE
2152	WINWORD.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 2892	2164	EQNEDT32.EXE	30
PID 2164 wrote to memory of 2892	2164	EQNEDT32.EXE	30
PID 2164 wrote to memory of 2892	2164	EQNEDT32.EXE	30
PID 2164 wrote to memory of 2892	2164	EQNEDT32.EXE	30
PID 2152 wrote to memory of 2656	2152	WINWORD.EXE	34
PID 2152 wrote to memory of 2656	2152	WINWORD.EXE	34
PID 2152 wrote to memory of 2656	2152	WINWORD.EXE	34
PID 2152 wrote to memory of 2656	2152	WINWORD.EXE	34
PID 2892 wrote to memory of 2240	2892	catgacy20306.exe	36
PID 2892 wrote to memory of 2240	2892	catgacy20306.exe	36
PID 2892 wrote to memory of 2240	2892	catgacy20306.exe	36
PID 2892 wrote to memory of 2240	2892	catgacy20306.exe	36
PID 2892 wrote to memory of 2052	2892	catgacy20306.exe	37
PID 2892 wrote to memory of 2052	2892	catgacy20306.exe	37
PID 2892 wrote to memory of 2052	2892	catgacy20306.exe	37
PID 2892 wrote to memory of 2052	2892	catgacy20306.exe	37
PID 2892 wrote to memory of 2052	2892	catgacy20306.exe	37
PID 2892 wrote to memory of 2052	2892	catgacy20306.exe	37
PID 2892 wrote to memory of 2052	2892	catgacy20306.exe	37
PID 2892 wrote to memory of 2052	2892	catgacy20306.exe	37
PID 2892 wrote to memory of 2052	2892	catgacy20306.exe	37

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	catgacy20306.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	catgacy20306.exe

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\fcde1a9f1b5ebaaca80704a3b8b1de31bcea199cb1e935748c5e87a7264cd948.rtf"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2656

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2164
- C:\Users\Admin\AppData\Roaming\catgacy20306.exe
  "C:\Users\Admin\AppData\Roaming\catgacy20306.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2892
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\catgacy20306.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2240
- - C:\Users\Admin\AppData\Roaming\catgacy20306.exe
    "C:\Users\Admin\AppData\Roaming\catgacy20306.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:2052

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Exploitation for Client Execution

1

T1203

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

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Downloads

C:\Users\Admin\AppData\Roaming\catgacy20306.exe

Filesize
511KB

MD5
c708568841e7426ed728f8300ae36433

SHA1
1cfe76e27ec2d8ae98e081e143a7c00f7df025d2

SHA256
501b615ea5b0ee2dc69848bb4146067fc94ceab1cf4a36385c35145a4acaa248

SHA512
289eae7056addcca0c94041b3ae764d8d3b8e97a801d1818edfe05e38d9f34a45f04696e3d919c832a85f37a8413534fa7a8993d0792ab75e4ebbc34bb389268

Download Submit
memory/2052-27-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2052-29-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2052-31-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2052-33-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2052-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2052-36-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2052-38-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2052-39-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2152-23-0x000000007168D000-0x0000000071698000-memory.dmp

Filesize
44KB

Download
memory/2152-0-0x000000002F881000-0x000000002F882000-memory.dmp

Filesize
4KB

Download
memory/2152-2-0x000000007168D000-0x0000000071698000-memory.dmp

Filesize
44KB

Download
memory/2152-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2892-26-0x0000000005700000-0x0000000005768000-memory.dmp

Filesize
416KB

Download
memory/2892-25-0x000000006B83E000-0x000000006B83F000-memory.dmp

Filesize
4KB

Download
memory/2892-18-0x0000000000480000-0x0000000000490000-memory.dmp

Filesize
64KB

Download
memory/2892-17-0x0000000004B70000-0x0000000004BEE000-memory.dmp

Filesize
504KB

Download
memory/2892-16-0x0000000000CB0000-0x0000000000D36000-memory.dmp

Filesize
536KB

Download
memory/2892-14-0x000000006B83E000-0x000000006B83F000-memory.dmp

Filesize
4KB

Download

Analysis

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