snakekeylogger | 1f9a0cce25f1860e53b471745a001b8d868ce4d96c3d5365c6c3d39c8b7ceb04

General

Target

Withdrawal Authorization Letter.exe
Size

882KB
MD5

ab51fcab2443142fb70bb50872407815
SHA1

c50331ac38b78963d45230c57927c18be34638e9
SHA256

1f9a0cce25f1860e53b471745a001b8d868ce4d96c3d5365c6c3d39c8b7ceb04
SHA512

2d7f8c53add06e86528d12899565ee0c848f20903c9092b2bff1e3a4c842343fd82c66801d43e90bf0e111b9465bd59bffe5f8619daf989631954f92b3c64756
SSDEEP

12288:i6WTGfEuEKW/CyXfwA/7k35yVHLnVheEEcIc/aZLBNcKii/ARh:eZKwCkfL/AGqHlciugg

Score

10^/10

snakekeylogger collection keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
qlRYaFn8
Email To:
[email protected]

Signatures

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

Snake Keylogger payload 6 IoCs

resource	yara_rule
behavioral1/memory/1728-63-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1728-65-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1728-67-0x000000000042012E-mapping.dmp	family_snakekeylogger
behavioral1/memory/1728-66-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1728-69-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1728-71-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Withdrawal Authorization Letter.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Withdrawal Authorization Letter.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Withdrawal Authorization Letter.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 1960 set thread context of 1728	1960	Withdrawal Authorization Letter.exe	28

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1728	Withdrawal Authorization Letter.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1728	Withdrawal Authorization Letter.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 1728	1960	Withdrawal Authorization Letter.exe	28
PID 1960 wrote to memory of 1728	1960	Withdrawal Authorization Letter.exe	28
PID 1960 wrote to memory of 1728	1960	Withdrawal Authorization Letter.exe	28
PID 1960 wrote to memory of 1728	1960	Withdrawal Authorization Letter.exe	28
PID 1960 wrote to memory of 1728	1960	Withdrawal Authorization Letter.exe	28
PID 1960 wrote to memory of 1728	1960	Withdrawal Authorization Letter.exe	28
PID 1960 wrote to memory of 1728	1960	Withdrawal Authorization Letter.exe	28
PID 1960 wrote to memory of 1728	1960	Withdrawal Authorization Letter.exe	28
PID 1960 wrote to memory of 1728	1960	Withdrawal Authorization Letter.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Withdrawal Authorization Letter.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Withdrawal Authorization Letter.exe

C:\Users\Admin\AppData\Local\Temp\Withdrawal Authorization Letter.exe
"C:\Users\Admin\AppData\Local\Temp\Withdrawal Authorization Letter.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Temp\Withdrawal Authorization Letter.exe
  "C:\Users\Admin\AppData\Local\Temp\Withdrawal Authorization Letter.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1728

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1728-65-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1728-71-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1728-61-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1728-66-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1728-60-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1728-63-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1728-69-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1960-55-0x0000000074AB1000-0x0000000074AB3000-memory.dmp

Filesize
8KB

Download
memory/1960-54-0x0000000001330000-0x0000000001414000-memory.dmp

Filesize
912KB

Download
memory/1960-59-0x0000000004B70000-0x0000000004B98000-memory.dmp

Filesize
160KB

Download
memory/1960-58-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/1960-57-0x0000000000510000-0x000000000051C000-memory.dmp

Filesize
48KB

Download
memory/1960-56-0x0000000000A20000-0x0000000000A38000-memory.dmp

Filesize
96KB

Download

Analysis

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