Malware Analysis Report

2024-11-13 16:42

Sample ID 230302-klqfrabg51
Target c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6
SHA256 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6
Tags
purecrypter snakekeylogger collection downloader keylogger loader stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6

Threat Level: Known bad

The file c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6 was found to be: Known bad.

Malicious Activity Summary

purecrypter snakekeylogger collection downloader keylogger loader stealer

PureCrypter

Snake Keylogger

Snake Keylogger payload

Purecrypter family

Checks computer location settings

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Suspicious use of SetThreadContext

Enumerates physical storage devices

outlook_win_path

Suspicious behavior: EnumeratesProcesses

outlook_office_path

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-03-02 08:41

Signatures

Purecrypter family

purecrypter

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-02 08:41

Reported

2023-03-02 08:44

Platform

win10v2004-20230220-en

Max time kernel

142s

Max time network

132s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe"

Signatures

PureCrypter

loader downloader purecrypter

Snake Keylogger

stealer keylogger snakekeylogger

Snake Keylogger payload

Description Indicator Process Target
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe N/A

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A checkip.dyndns.org N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1472 set thread context of 1860 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1472 wrote to memory of 216 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1472 wrote to memory of 216 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1472 wrote to memory of 216 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1472 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1472 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1472 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1472 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1472 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1472 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1472 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1472 wrote to memory of 1860 N/A C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe

"C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Network

Country Destination Domain Proto
US 117.18.232.240:80 tcp
US 8.8.8.8:53 120.190.253.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 210.81.184.52.in-addr.arpa udp
US 192.3.26.135:80 192.3.26.135 tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 135.26.3.192.in-addr.arpa udp
US 8.8.8.8:53 checkip.dyndns.org udp
US 193.122.130.0:80 checkip.dyndns.org tcp
US 8.8.8.8:53 0.130.122.193.in-addr.arpa udp
IE 13.69.239.74:443 tcp
US 117.18.232.240:80 tcp
US 117.18.232.240:80 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 131.253.33.203:80 tcp
US 8.8.8.8:53 64.13.109.52.in-addr.arpa udp
US 8.8.8.8:53 160.252.72.23.in-addr.arpa udp

Files

memory/1472-133-0x0000000000E00000-0x0000000000E2E000-memory.dmp

memory/1472-134-0x0000000005D40000-0x00000000062E4000-memory.dmp

memory/1472-135-0x0000000005830000-0x00000000058C2000-memory.dmp

memory/1472-136-0x00000000057E0000-0x00000000057EA000-memory.dmp

memory/1472-137-0x0000000005AC0000-0x0000000005AD0000-memory.dmp

memory/1472-138-0x0000000007700000-0x0000000007722000-memory.dmp

memory/216-139-0x0000000002FF0000-0x0000000003026000-memory.dmp

memory/216-140-0x0000000005770000-0x0000000005D98000-memory.dmp

memory/216-141-0x0000000005F10000-0x0000000005F76000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yz11dtz2.huj.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/216-147-0x0000000005FF0000-0x0000000006056000-memory.dmp

memory/216-152-0x0000000005130000-0x0000000005140000-memory.dmp

memory/216-153-0x0000000005130000-0x0000000005140000-memory.dmp

memory/216-154-0x00000000065D0000-0x00000000065EE000-memory.dmp

memory/216-155-0x0000000007C10000-0x000000000828A000-memory.dmp

memory/216-156-0x0000000006AD0000-0x0000000006AEA000-memory.dmp

memory/216-157-0x0000000005130000-0x0000000005140000-memory.dmp

memory/1472-158-0x0000000005AC0000-0x0000000005AD0000-memory.dmp

memory/216-159-0x0000000005130000-0x0000000005140000-memory.dmp

memory/216-160-0x0000000005130000-0x0000000005140000-memory.dmp

memory/216-161-0x0000000005130000-0x0000000005140000-memory.dmp

memory/1860-166-0x0000000000400000-0x0000000000426000-memory.dmp

memory/1860-168-0x00000000050C0000-0x000000000515C000-memory.dmp

memory/1860-169-0x0000000005420000-0x0000000005430000-memory.dmp

memory/1860-170-0x0000000006170000-0x0000000006332000-memory.dmp

memory/1860-171-0x0000000005420000-0x0000000005430000-memory.dmp