snakekeylogger | fe6402cb56844ea02e9d99b45ec657bf4716b5d61fa057894f811e665366571d

General

Target

LETTER OF AUTHORIZATION.exe
Size

1.2MB
MD5

c787d6c746ed6c0d08e0d7ce05012b56
SHA1

614d8f36a2016bfa67472876383f9ab2ae55fe48
SHA256

6ed8984ec6982853a97d73d735054cb897d4acea75e284b9a5493086917206e7
SHA512

de60d9babe7bf3b7f0e729bb02ac7a7536b7b17b7ca869a34c07571535fa551e10a20f43de79f563cdb84c32ff3119e2c258157e133924c74f27c284cf3dc2a1
SSDEEP

24576:7Sexfdr7yJ96EbKNxpXq7TYA2rQtlHPI4Q:mNIEbKzVQB

Score

10^/10

snakekeylogger collection discovery keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

Credentials

Protocol: smtp
Host:
yulifertilizer.com.my
Port:
25
Username:
[email protected]
Password:
Ayfc931319*
Email To:
[email protected]

Signatures

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

Snake Keylogger payload 5 IoCs

resource	yara_rule
behavioral1/memory/3036-11-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/3036-8-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/3036-7-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/3036-13-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/3036-15-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Snakekeylogger family
snakekeylogger
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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	LETTER OF AUTHORIZATION.exe
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	LETTER OF AUTHORIZATION.exe
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	LETTER OF AUTHORIZATION.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	checkip.dyndns.org
8	reallyfreegeoip.org
9	reallyfreegeoip.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2176 set thread context of 3036	2176	LETTER OF AUTHORIZATION.exe	30

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	LETTER OF AUTHORIZATION.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LETTER OF AUTHORIZATION.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3036	LETTER OF AUTHORIZATION.exe
3036	LETTER OF AUTHORIZATION.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3036	LETTER OF AUTHORIZATION.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 3036	2176	LETTER OF AUTHORIZATION.exe	30
PID 2176 wrote to memory of 3036	2176	LETTER OF AUTHORIZATION.exe	30
PID 2176 wrote to memory of 3036	2176	LETTER OF AUTHORIZATION.exe	30
PID 2176 wrote to memory of 3036	2176	LETTER OF AUTHORIZATION.exe	30
PID 2176 wrote to memory of 3036	2176	LETTER OF AUTHORIZATION.exe	30
PID 2176 wrote to memory of 3036	2176	LETTER OF AUTHORIZATION.exe	30
PID 2176 wrote to memory of 3036	2176	LETTER OF AUTHORIZATION.exe	30
PID 2176 wrote to memory of 3036	2176	LETTER OF AUTHORIZATION.exe	30
PID 2176 wrote to memory of 3036	2176	LETTER OF AUTHORIZATION.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	LETTER OF AUTHORIZATION.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	LETTER OF AUTHORIZATION.exe

C:\Users\Admin\AppData\Local\Temp\LETTER OF AUTHORIZATION.exe
"C:\Users\Admin\AppData\Local\Temp\LETTER OF AUTHORIZATION.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Users\Admin\AppData\Local\Temp\LETTER OF AUTHORIZATION.exe
  "C:\Users\Admin\AppData\Local\Temp\LETTER OF AUTHORIZATION.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:3036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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 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

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Downloads

memory/2176-0-0x000000007478E000-0x000000007478F000-memory.dmp

Filesize
4KB

Download
memory/2176-1-0x0000000000FD0000-0x000000000110A000-memory.dmp

Filesize
1.2MB

Download
memory/2176-2-0x0000000000A80000-0x0000000000AD4000-memory.dmp

Filesize
336KB

Download
memory/2176-3-0x0000000074780000-0x0000000074E6E000-memory.dmp

Filesize
6.9MB

Download
memory/2176-4-0x0000000000520000-0x0000000000528000-memory.dmp

Filesize
32KB

Download
memory/2176-19-0x0000000074780000-0x0000000074E6E000-memory.dmp

Filesize
6.9MB

Download
memory/2176-18-0x000000007478E000-0x000000007478F000-memory.dmp

Filesize
4KB

Download
memory/3036-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3036-8-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3036-5-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3036-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3036-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3036-15-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3036-16-0x0000000074780000-0x0000000074E6E000-memory.dmp

Filesize
6.9MB

Download
memory/3036-17-0x0000000074780000-0x0000000074E6E000-memory.dmp

Filesize
6.9MB

Download
memory/3036-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3036-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3036-20-0x0000000074780000-0x0000000074E6E000-memory.dmp

Filesize
6.9MB

Download
memory/3036-21-0x0000000074780000-0x0000000074E6E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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