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 1 IoCs

resource	yara_rule
behavioral2/memory/3528-139-0x0000000000400000-0x0000000000426000-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-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Withdrawal Authorization Letter.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Withdrawal Authorization Letter.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\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
34	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1244 set thread context of 3528	1244	Withdrawal Authorization Letter.exe	90

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3528	Withdrawal Authorization Letter.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3528	Withdrawal Authorization Letter.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1244 wrote to memory of 3528	1244	Withdrawal Authorization Letter.exe	90
PID 1244 wrote to memory of 3528	1244	Withdrawal Authorization Letter.exe	90
PID 1244 wrote to memory of 3528	1244	Withdrawal Authorization Letter.exe	90
PID 1244 wrote to memory of 3528	1244	Withdrawal Authorization Letter.exe	90
PID 1244 wrote to memory of 3528	1244	Withdrawal Authorization Letter.exe	90
PID 1244 wrote to memory of 3528	1244	Withdrawal Authorization Letter.exe	90
PID 1244 wrote to memory of 3528	1244	Withdrawal Authorization Letter.exe	90
PID 1244 wrote to memory of 3528	1244	Withdrawal Authorization Letter.exe	90

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\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-1-5-21-2629973501-4017243118-3254762364-1000\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:1244
- 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:3528

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Withdrawal Authorization Letter.exe.log

Filesize
1KB

MD5
e08f822522c617a40840c62e4b0fb45e

SHA1
ae516dca4da5234be6676d3f234c19ec55725be7

SHA256
bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

SHA512
894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

Download Submit
memory/1244-132-0x0000000000650000-0x0000000000734000-memory.dmp

Filesize
912KB

Download
memory/1244-133-0x00000000055E0000-0x0000000005B84000-memory.dmp

Filesize
5.6MB

Download
memory/1244-134-0x00000000050D0000-0x0000000005162000-memory.dmp

Filesize
584KB

Download
memory/1244-135-0x0000000005180000-0x000000000518A000-memory.dmp

Filesize
40KB

Download
memory/1244-136-0x0000000007AB0000-0x0000000007B4C000-memory.dmp

Filesize
624KB

Download
memory/1244-137-0x000000000B560000-0x000000000B5C6000-memory.dmp

Filesize
408KB

Download
memory/3528-139-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3528-141-0x0000000006370000-0x0000000006532000-memory.dmp

Filesize
1.8MB

Download

Analysis

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