snakekeylogger | 3fc278308168c0c7f245925212bb713f8096c6dc2241900be9db5027d384385a

General

Target

dekont.pdf.exe
Size

515KB
MD5

af524ce7c911317b91b4f5bd7c99eec8
SHA1

2dd79a2eff64614a5ca783bca004c078b8d4b4a9
SHA256

3fc278308168c0c7f245925212bb713f8096c6dc2241900be9db5027d384385a
SHA512

8096c10fa544de31a6db1a74a85839d9c8cb5374c4a7ee5efb51d3d4b8d4595470944cf67ffecd918ce35b67d54a2085b2da3538f4075516d31aa37bca3423f0
SSDEEP

12288:iIFzKfj19UGi8mVV4Mc//Bq8rmq8WqSgxg3AyShBWf9i72l:bK/FixVDc/s8P84PSKfkE

Score

10^/10

snakekeylogger collection credential_access discovery keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot7323804265:AAGOrHmilwRNOOZbuVQa6WTtwu__mfCEENE/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/4524-11-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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 2 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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dekont.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dekont.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dekont.pdf.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
17	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4216 set thread context of 4524	4216	dekont.pdf.exe	86

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	dekont.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dekont.pdf.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4524	dekont.pdf.exe
4524	dekont.pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4524	dekont.pdf.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 4524	4216	dekont.pdf.exe	86
PID 4216 wrote to memory of 4524	4216	dekont.pdf.exe	86
PID 4216 wrote to memory of 4524	4216	dekont.pdf.exe	86
PID 4216 wrote to memory of 4524	4216	dekont.pdf.exe	86
PID 4216 wrote to memory of 4524	4216	dekont.pdf.exe	86
PID 4216 wrote to memory of 4524	4216	dekont.pdf.exe	86
PID 4216 wrote to memory of 4524	4216	dekont.pdf.exe	86
PID 4216 wrote to memory of 4524	4216	dekont.pdf.exe	86

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dekont.pdf.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dekont.pdf.exe

C:\Users\Admin\AppData\Local\Temp\dekont.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\dekont.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4216
- C:\Users\Admin\AppData\Local\Temp\dekont.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\dekont.pdf.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:4524

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\dekont.pdf.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/4216-4-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/4216-3-0x0000000005130000-0x00000000051C2000-memory.dmp

Filesize
584KB

Download
memory/4216-10-0x0000000008D30000-0x0000000008DCC000-memory.dmp

Filesize
624KB

Download
memory/4216-9-0x00000000064D0000-0x0000000006538000-memory.dmp

Filesize
416KB

Download
memory/4216-5-0x00000000050E0000-0x00000000050EA000-memory.dmp

Filesize
40KB

Download
memory/4216-6-0x0000000005480000-0x0000000005490000-memory.dmp

Filesize
64KB

Download
memory/4216-7-0x00000000747FE000-0x00000000747FF000-memory.dmp

Filesize
4KB

Download
memory/4216-8-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/4216-15-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/4216-2-0x00000000056E0000-0x0000000005C84000-memory.dmp

Filesize
5.6MB

Download
memory/4216-0-0x00000000747FE000-0x00000000747FF000-memory.dmp

Filesize
4KB

Download
memory/4216-1-0x0000000000680000-0x0000000000706000-memory.dmp

Filesize
536KB

Download
memory/4524-14-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/4524-19-0x0000000006E00000-0x0000000006FC2000-memory.dmp

Filesize
1.8MB

Download
memory/4524-16-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/4524-17-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/4524-18-0x0000000006BE0000-0x0000000006C30000-memory.dmp

Filesize
320KB

Download
memory/4524-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

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