snakekeylogger | b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78

General

Target

b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78.exe
Size

990KB
MD5

9a4fb2a5a118c7d3feafaf6d439ff40e
SHA1

ffcff130146653cb19addcbba99f90ef07881ad9
SHA256

b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78
SHA512

dffdd1031bb2c592c2d58679c63eb623fe7930e348094e15527eb13a66ca5a49f439bd91ca411ec5d590e7ff0c59a6d27b3629daeca687be6ccaeabf5820e017
SSDEEP

24576:ptb20pkaCqT5TBWgNQ7aAAcsRq68Eoc26A:6Vg5tQ7aAA+3JH5

Score

10^/10

snakekeylogger collection discovery keylogger stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot7578088265:AAHvd5E9MBWeIBV2JVvDWdTRg0KYKBSK8MM/sendMessage?chat_id=7365454061

Signatures

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

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/4468-20-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Snakekeylogger family
snakekeylogger

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\silvexes.vbs	silvexes.exe

Executes dropped EXE 1 IoCs

pid	Process
4592	silvexes.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\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
13	checkip.dyndns.org

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000a000000023b7b-10.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4592 set thread context of 4468	4592	silvexes.exe	84

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1700	4592	WerFault.exe	83

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	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	silvexes.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4468	RegSvcs.exe
4468	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4592	silvexes.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4468	RegSvcs.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 4592	1544	b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78.exe	83
PID 1544 wrote to memory of 4592	1544	b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78.exe	83
PID 1544 wrote to memory of 4592	1544	b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78.exe	83
PID 4592 wrote to memory of 4468	4592	silvexes.exe	84
PID 4592 wrote to memory of 4468	4592	silvexes.exe	84
PID 4592 wrote to memory of 4468	4592	silvexes.exe	84
PID 4592 wrote to memory of 4468	4592	silvexes.exe	84

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78.exe
"C:\Users\Admin\AppData\Local\Temp\b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Users\Admin\AppData\Local\Wausaukee\silvexes.exe
  "C:\Users\Admin\AppData\Local\Temp\b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4592
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78.exe"
    3⤵
    - Accesses Microsoft Outlook profiles
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:4468
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4592 -s 720
    3⤵
    - Program crash
    PID:1700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4592 -ip 4592
1⤵
PID:3036

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\scroll

Filesize
64KB

MD5
67dc35f8f1a312722c62bc995409585c

SHA1
0feac7694c6d68208ae8d9ec0cf1084c36a435ca

SHA256
5bd4bf899b96fdc0e44c3fe3e7aa16e1ce531c337f995b0b10d0b345b45f789f

SHA512
707cf1a071689f27242c2e54abb478bb0d5d851e5b04b668853db7683617868ad89b5de9f54a8de4c226692b8b8d565ccb4a1ef921cdc85ca13d8f0550f2d7be

Download Submit
C:\Users\Admin\AppData\Local\Wausaukee\silvexes.exe

Filesize
990KB

MD5
9a4fb2a5a118c7d3feafaf6d439ff40e

SHA1
ffcff130146653cb19addcbba99f90ef07881ad9

SHA256
b1ca4dc79c3ef98789267e703748ac340aa6f84178f7f477e7214f5bbf0bbd78

SHA512
dffdd1031bb2c592c2d58679c63eb623fe7930e348094e15527eb13a66ca5a49f439bd91ca411ec5d590e7ff0c59a6d27b3629daeca687be6ccaeabf5820e017

Download Submit
memory/1544-6-0x00000000013C0000-0x00000000017C0000-memory.dmp

Filesize
4.0MB

Download
memory/4468-25-0x000000007423E000-0x000000007423F000-memory.dmp

Filesize
4KB

Download
memory/4468-20-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4468-21-0x000000007423E000-0x000000007423F000-memory.dmp

Filesize
4KB

Download
memory/4468-22-0x00000000057C0000-0x0000000005D64000-memory.dmp

Filesize
5.6MB

Download
memory/4468-23-0x00000000052F0000-0x000000000538C000-memory.dmp

Filesize
624KB

Download
memory/4468-24-0x0000000074230000-0x00000000749E0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-26-0x0000000074230000-0x00000000749E0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-27-0x00000000064D0000-0x0000000006520000-memory.dmp

Filesize
320KB

Download
memory/4468-28-0x00000000066F0000-0x00000000068B2000-memory.dmp

Filesize
1.8MB

Download
memory/4468-29-0x00000000065C0000-0x0000000006652000-memory.dmp

Filesize
584KB

Download
memory/4468-30-0x0000000006560000-0x000000000656A000-memory.dmp

Filesize
40KB

Download
memory/4592-18-0x0000000001870000-0x0000000001C70000-memory.dmp

Filesize
4.0MB

Download

Analysis

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