purecrypter | 2ad849391b902e19d516b7cd3eb0c1977eba5f39baf5f1e687ec09613866b721

General

Target

104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe
Size

17KB
MD5

cbcffdbddd074c247071caed0e162729
SHA1

eec65a6aa6eaa1fa44b1832d405651e6dc87fe57
SHA256

2ad849391b902e19d516b7cd3eb0c1977eba5f39baf5f1e687ec09613866b721
SHA512

9adf006b456245c5332b0fb69d8f76b2c46a53b6658d69e179a8ed8cafda61b86e1000e7744eefc7568f9aea0e27053b57449be947846d4a9cf9f4b8a3fc8d92
SSDEEP

384:UoZHmnT8N7wgseoLf6VYgQE8AWilNekNek+vD7:UGG0cffgLo

Score

10^/10

purecrypter snakekeylogger collection downloader keylogger loader stealer

Malware Config

Extracted

Family

purecrypter

C2

https://pentatunggal.com/o7/Dnivqllcmu.dat

Extracted

Family

snakekeylogger

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
doDHyw%0
Email To:
[email protected]

Signatures

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
stealer keylogger snakekeylogger

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/1668-165-0x0000000000400000-0x0000000000426000-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-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	aspnet_compiler.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	aspnet_compiler.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	aspnet_compiler.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
8	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 340 set thread context of 1668	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	84

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4868	powershell.exe
4868	powershell.exe
1668	aspnet_compiler.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe
Token: SeDebugPrivilege	4868	powershell.exe
Token: SeDebugPrivilege	1668	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 340 wrote to memory of 4868	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	82
PID 340 wrote to memory of 4868	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	82
PID 340 wrote to memory of 4868	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	82
PID 340 wrote to memory of 1668	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	84
PID 340 wrote to memory of 1668	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	84
PID 340 wrote to memory of 1668	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	84
PID 340 wrote to memory of 1668	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	84
PID 340 wrote to memory of 1668	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	84
PID 340 wrote to memory of 1668	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	84
PID 340 wrote to memory of 1668	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	84
PID 340 wrote to memory of 1668	340	104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe	84

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	aspnet_compiler.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	aspnet_compiler.exe

C:\Users\Admin\AppData\Local\Temp\104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe
"C:\Users\Admin\AppData\Local\Temp\104.168.46.126_-_o_-_b08.exe___cbcffdbddd074c247071caed0e162729.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:340
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4868
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1668

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nikjsfco.upz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/340-134-0x0000000005C90000-0x0000000006234000-memory.dmp

Filesize
5.6MB

Download
memory/340-135-0x0000000005780000-0x0000000005812000-memory.dmp

Filesize
584KB

Download
memory/340-136-0x0000000005910000-0x0000000005920000-memory.dmp

Filesize
64KB

Download
memory/340-137-0x0000000007550000-0x0000000007572000-memory.dmp

Filesize
136KB

Download
memory/340-133-0x0000000000D50000-0x0000000000D5A000-memory.dmp

Filesize
40KB

Download
memory/340-157-0x0000000005910000-0x0000000005920000-memory.dmp

Filesize
64KB

Download
memory/1668-170-0x0000000005650000-0x000000000565A000-memory.dmp

Filesize
40KB

Download
memory/1668-168-0x0000000006210000-0x00000000063D2000-memory.dmp

Filesize
1.8MB

Download
memory/1668-167-0x0000000005000000-0x000000000509C000-memory.dmp

Filesize
624KB

Download
memory/1668-165-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1668-169-0x00000000052A0000-0x00000000052B0000-memory.dmp

Filesize
64KB

Download
memory/1668-171-0x00000000052A0000-0x00000000052B0000-memory.dmp

Filesize
64KB

Download
memory/4868-153-0x0000000005D40000-0x0000000005D5E000-memory.dmp

Filesize
120KB

Download
memory/4868-155-0x00000000073A0000-0x0000000007A1A000-memory.dmp

Filesize
6.5MB

Download
memory/4868-156-0x0000000006230000-0x000000000624A000-memory.dmp

Filesize
104KB

Download
memory/4868-154-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/4868-158-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/4868-159-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/4868-160-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/4868-143-0x0000000005700000-0x0000000005766000-memory.dmp

Filesize
408KB

Download
memory/4868-142-0x00000000055A0000-0x0000000005606000-memory.dmp

Filesize
408KB

Download
memory/4868-141-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/4868-140-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/4868-139-0x0000000004F00000-0x0000000005528000-memory.dmp

Filesize
6.2MB

Download
memory/4868-138-0x0000000002790000-0x00000000027C6000-memory.dmp

Filesize
216KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads