snakekeylogger | b9d4088106a3a557fb5d909c8c5b921971704d7b764306ee4190cefd9b8d89b0

General

Target

Vhycf.exe
Size

336KB
MD5

452230cd897fa11773a80b7660d1eb75
SHA1

1e3e5ea548df2aef3db95d4243e6add49dab9688
SHA256

b9d4088106a3a557fb5d909c8c5b921971704d7b764306ee4190cefd9b8d89b0
SHA512

51b75adcffc2dc52813dfd7a0aa16df7b348084bfc4d5999346aba724b33f8891ec282002301bf42f7955f5e1169c7e9ca84af54f50823cb8e1079b1ea7233f9
SSDEEP

6144:7Rgc2lOrSZPpLu51ZK7VsA+JgqNb8PiFU9+j9f0GVoROChql1vHLNyk5ufH/c/dj:PS7VsARqJ86FU9+j9f0GVoROChq3vXqa

Score

10^/10

snakekeylogger collection keylogger persistence stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot6495173086:AAHM8NMu-uOSJHZaHij-umtWDUwi5-hOLog/sendMessage?chat_id=5262627523

Signatures

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

Snake Keylogger payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2784-10-0x0000000140000000-0x0000000140022000-memory.dmp	family_snakekeylogger

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Vhycf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sssss = "C:\\Users\\Admin\\AppData\\Roaming\\sssss.exe"	Vhycf.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.

Processes:

flow ioc

56 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Vhycf.exe

description pid process target process

PID 5044 set thread context of 2784 5044 Vhycf.exe MSBuild.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

MSBuild.exe

pid process

2784 MSBuild.exe
2784 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Vhycf.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 5044 Vhycf.exe
Token: SeDebugPrivilege 2784 MSBuild.exe

flow	ioc
56	checkip.dyndns.org

description	pid	process	target process
PID 5044 set thread context of 2784	5044	Vhycf.exe	MSBuild.exe

pid	process
2784	MSBuild.exe
2784	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	5044	Vhycf.exe
Token: SeDebugPrivilege	2784	MSBuild.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Vhycf.exe

description	pid	process	target process
PID 5044 wrote to memory of 2784	5044	Vhycf.exe	MSBuild.exe
PID 5044 wrote to memory of 2784	5044	Vhycf.exe	MSBuild.exe
PID 5044 wrote to memory of 2784	5044	Vhycf.exe	MSBuild.exe
PID 5044 wrote to memory of 2784	5044	Vhycf.exe	MSBuild.exe
PID 5044 wrote to memory of 2784	5044	Vhycf.exe	MSBuild.exe
PID 5044 wrote to memory of 2784	5044	Vhycf.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\Vhycf.exe
"C:\Users\Admin\AppData\Local\Temp\Vhycf.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5044

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/2784-10-0x0000000140000000-0x0000000140022000-memory.dmp

Filesize
136KB

Download
memory/2784-18-0x0000025520270000-0x0000025520280000-memory.dmp

Filesize
64KB

Download
memory/2784-17-0x00007FFA4A340000-0x00007FFA4AE01000-memory.dmp

Filesize
10.8MB

Download
memory/2784-16-0x000002553A6D0000-0x000002553A892000-memory.dmp

Filesize
1.8MB

Download
memory/2784-15-0x0000025521A90000-0x0000025521AE0000-memory.dmp

Filesize
320KB

Download
memory/2784-14-0x0000025520270000-0x0000025520280000-memory.dmp

Filesize
64KB

Download
memory/2784-13-0x00007FFA4A340000-0x00007FFA4AE01000-memory.dmp

Filesize
10.8MB

Download
memory/5044-4-0x000001906C8C0000-0x000001906C908000-memory.dmp

Filesize
288KB

Download
memory/5044-8-0x000001906C770000-0x000001906C780000-memory.dmp

Filesize
64KB

Download
memory/5044-7-0x00007FFA4A340000-0x00007FFA4AE01000-memory.dmp

Filesize
10.8MB

Download
memory/5044-6-0x000001906CB00000-0x000001906CB4C000-memory.dmp

Filesize
304KB

Download
memory/5044-12-0x00007FFA4A340000-0x00007FFA4AE01000-memory.dmp

Filesize
10.8MB

Download
memory/5044-5-0x000001906CA50000-0x000001906CA86000-memory.dmp

Filesize
216KB

Download
memory/5044-0-0x00000190521B0000-0x0000019052208000-memory.dmp

Filesize
352KB

Download
memory/5044-3-0x000001906C770000-0x000001906C780000-memory.dmp

Filesize
64KB

Download
memory/5044-2-0x00007FFA4A340000-0x00007FFA4AE01000-memory.dmp

Filesize
10.8MB

Download
memory/5044-1-0x00000190525C0000-0x00000190525C8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads