snakekeylogger | e9e4317a89ca227ca7a5cec8b3b1a0dc86285373ef067159f6db934ea0bda8e3

General

Target
invoice.exe
Size 850KB
Sample221027-tfnjmscfe5
SHA256 e9e4317a89ca227ca7a5cec8b3b1a0dc86285373ef067159f6db934ea0bda8e3
MD5 05467dd6c3412799be093072acd1ea75
SHA1 8e492bd7aae29f7bb4d33dbde8227e5487595440
SHA512 b71c254a3027e31d6d8588d7cdeac9cc078d39a2f00fd0136b6dca793fa1eb8877d87db0249bd9f84861c6daa48e88e48b4413db8ef111e7b688f2cd6c14c1ea
SSDEEP 12288:wuaAgHtDg5xE1TwWXFF/oi9uCyRE//GZxlsyMdVorLb355w3z5LErqC:wV4BWVF/oQufG/GiyGorX3g39S
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

snakekeylogger collection keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot1644755040:AAGRTnph6BdO8-t1bJaOyVu9aeuJErmisqs/sendMessage?chat_id=1637651323

Signatures

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

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/5008-140-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	invoice.exe

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-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice.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
32	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1984 set thread context of 5008	1984	invoice.exe	93

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1860	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1984	invoice.exe
5008	invoice.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1984	invoice.exe
Token: SeDebugPrivilege	5008	invoice.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 1860	1984	invoice.exe	91
PID 1984 wrote to memory of 1860	1984	invoice.exe	91
PID 1984 wrote to memory of 1860	1984	invoice.exe	91
PID 1984 wrote to memory of 5008	1984	invoice.exe	93
PID 1984 wrote to memory of 5008	1984	invoice.exe	93
PID 1984 wrote to memory of 5008	1984	invoice.exe	93
PID 1984 wrote to memory of 5008	1984	invoice.exe	93
PID 1984 wrote to memory of 5008	1984	invoice.exe	93
PID 1984 wrote to memory of 5008	1984	invoice.exe	93
PID 1984 wrote to memory of 5008	1984	invoice.exe	93
PID 1984 wrote to memory of 5008	1984	invoice.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice.exe

C:\Users\Admin\AppData\Local\Temp\invoice.exe
"C:\Users\Admin\AppData\Local\Temp\invoice.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GnNqNmO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6E4A.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1860
- C:\Users\Admin\AppData\Local\Temp\invoice.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:5008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

invoice.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\invoice.exe.log
Size 1KB
SHA256 e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99
MD5 84e77a587d94307c0ac1357eb4d3d46f
SHA1 83cc900f9401f43d181207d64c5adba7a85edc1e
SHA512 aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691
MD5 SHA1 SHA512

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tmp6E4A.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp6E4A.tmp
Size 1KB
SHA256 2e5520461423a9e3ba2055c3511734a088b873955803a762bffb2a797d8cc779
MD5 b4602031ee816e3434579e635095594b
SHA1 c9a1d19250c4b38782771e5dfaf8ac3acb6fd154
SHA512 f26c7c9467a1b4b8962dee67a9c4078adfa647e2d4ba83ed893904fa680f4d8c6a802ba8ce6dbbb6dc3efff8ce1d2d749d0b30982422ac3d231c4aadd071baf8
MD5 SHA1 SHA512

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memory/1984-132-0x0000000000F70000-0x000000000104A000-memory.dmp

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memory/1984-133-0x0000000006040000-0x00000000065E4000-memory.dmp

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memory/1984-134-0x00000000059D0000-0x0000000005A62000-memory.dmp

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memory/1984-135-0x0000000005B30000-0x0000000005BCC000-memory.dmp

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memory/1984-136-0x0000000005A90000-0x0000000005A9A000-memory.dmp

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memory/5008-140-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/5008-142-0x0000000006F80000-0x0000000007142000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads