purecrypter | db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a

Analysis

max time kernel
250s
max time network
337s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
11/02/2023, 01:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
Size

2.5MB
MD5

6c7ce729cc83844a10c51889ece82606
SHA1

442a9193aaa7eab23f135743a8a06481bc0bd28d
SHA256

db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a
SHA512

a2e32664649a271f941b3496193fc7868cbcf47982d5a8ba61d810848140eccf8899e48d6fd8dcdd8c75c26785872463c53937e69f6a67b95515eaac6254189d
SSDEEP

49152:hQE4u11qfGaBLe7l/4fWor/Qx8vneNu0cmWUyAV4iybj8hSFvEZ:hQE4u11cGaBK7pQWC/o6neQYWUy64d/

Score

10^/10

purecrypter downloader loader persistence

Malware Config

Signatures

Detect PureCrypter injector 1 IoCs

loader

resource	yara_rule
behavioral1/memory/1992-55-0x0000000004B30000-0x0000000004D9E000-memory.dmp	family_purecrypter

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\VPNClient\\VPNClient.exe\","	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
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 11 IoCs

pid	Process
1856	powershell.exe
1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
Token: SeDebugPrivilege	1856	powershell.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 1856	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	28
PID 1992 wrote to memory of 1856	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	28
PID 1992 wrote to memory of 1856	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	28
PID 1992 wrote to memory of 1856	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	28
PID 1992 wrote to memory of 828	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	30
PID 1992 wrote to memory of 828	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	30
PID 1992 wrote to memory of 828	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	30
PID 1992 wrote to memory of 828	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	30
PID 1992 wrote to memory of 996	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	31
PID 1992 wrote to memory of 996	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	31
PID 1992 wrote to memory of 996	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	31
PID 1992 wrote to memory of 996	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	31
PID 1992 wrote to memory of 1056	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	32
PID 1992 wrote to memory of 1056	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	32
PID 1992 wrote to memory of 1056	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	32
PID 1992 wrote to memory of 1056	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	32
PID 1992 wrote to memory of 1704	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	33
PID 1992 wrote to memory of 1704	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	33
PID 1992 wrote to memory of 1704	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	33
PID 1992 wrote to memory of 1704	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	33
PID 1992 wrote to memory of 304	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	34
PID 1992 wrote to memory of 304	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	34
PID 1992 wrote to memory of 304	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	34
PID 1992 wrote to memory of 304	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	34
PID 1992 wrote to memory of 632	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	35
PID 1992 wrote to memory of 632	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	35
PID 1992 wrote to memory of 632	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	35
PID 1992 wrote to memory of 632	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	35
PID 1992 wrote to memory of 1372	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	36
PID 1992 wrote to memory of 1372	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	36
PID 1992 wrote to memory of 1372	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	36
PID 1992 wrote to memory of 1372	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	36
PID 1992 wrote to memory of 1812	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	37
PID 1992 wrote to memory of 1812	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	37
PID 1992 wrote to memory of 1812	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	37
PID 1992 wrote to memory of 1812	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	37
PID 1992 wrote to memory of 1948	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	38
PID 1992 wrote to memory of 1948	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	38
PID 1992 wrote to memory of 1948	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	38
PID 1992 wrote to memory of 1948	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	38
PID 1992 wrote to memory of 1276	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	39
PID 1992 wrote to memory of 1276	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	39
PID 1992 wrote to memory of 1276	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	39
PID 1992 wrote to memory of 1276	1992	db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe	39

C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
"C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992
- 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:1856
- C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  2⤵
  PID:828
- C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  2⤵
  PID:996
- C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  2⤵
  PID:1056
- C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  2⤵
  PID:1704
- C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  2⤵
  PID:304
- C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  2⤵
  PID:632
- C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  2⤵
  PID:1372
- C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  2⤵
  PID:1812
- C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  2⤵
  PID:1948
- C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  C:\Users\Admin\AppData\Local\Temp\db2ec1bb47040a7f2cfb210fbf58409339f923185c1eb7bb4b97e19fdf3f1f6a.exe
  2⤵
  PID:1276

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1856-59-0x000000006FB50000-0x00000000700FB000-memory.dmp

Filesize
5.7MB

Download
memory/1856-60-0x000000006FB50000-0x00000000700FB000-memory.dmp

Filesize
5.7MB

Download
memory/1856-61-0x000000006FB50000-0x00000000700FB000-memory.dmp

Filesize
5.7MB

Download
memory/1992-54-0x0000000000220000-0x00000000004AA000-memory.dmp

Filesize
2.5MB

Download
memory/1992-55-0x0000000004B30000-0x0000000004D9E000-memory.dmp

Filesize
2.4MB

Download
memory/1992-56-0x00000000763D1000-0x00000000763D3000-memory.dmp

Filesize
8KB

Download
memory/1992-62-0x0000000004E50000-0x0000000004EA2000-memory.dmp

Filesize
328KB

Download