purecrypter | 8bbf3420ad5b1e7283ecc131dd720728a0ebaba799d9084509c8a47b8efe1cb0

Resubmissions

28-02-2023 08:35

230228-khdmsaad98 10

27-02-2023 10:04

230227-l39rdsda95 10

Analysis

max time kernel
403s
max time network
407s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
28-02-2023 08:35

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General

Target

bypass_ps1_extracted_pe_file.exe
Size

171KB
MD5

b24e714962c627bc153be748efe9d288
SHA1

68d9fe8a592534e180db5ec89afe999221e43fec
SHA256

8bbf3420ad5b1e7283ecc131dd720728a0ebaba799d9084509c8a47b8efe1cb0
SHA512

a4cbf257a3196aac284df85285d224f626689257b525db3fe73b3ff213b4b70a171e40e836760d93dd70dd78e142ff564f9bf678bb4010452bfcd3853bac340b
SSDEEP

1536:g1c9URWzKr7PhuuUpV7+5JTiy95BuUCQahsf5mZIWiwwr7QXsouW2ASDDA6rRSCM:g1pWaxa7Dy95pS2lzxnIvXtZzSaPnp

Score

10^/10

purecrypter downloader loader persistence spyware

Malware Config

Signatures

Detect PureCrypter injector 34 IoCs

loader

resource	yara_rule
behavioral1/memory/1192-56-0x000000001C760000-0x000000001CA42000-memory.dmp	family_purecrypter
behavioral1/memory/1192-58-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-57-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-60-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-62-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-64-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-66-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-68-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-70-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-72-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-74-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-76-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-80-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-78-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-82-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-84-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-86-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-88-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-90-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-92-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-94-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-96-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-98-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-100-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-102-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-104-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-106-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-108-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-110-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-112-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-114-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-116-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-118-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter
behavioral1/memory/1192-120-0x000000001C760000-0x000000001CA3C000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows\CurrentVersion\Run\exoduswalllett = "\"C:\\Users\\Admin\\AppData\\Roaming\\Exodus\\exoduswalllett.exe\""	bypass_ps1_extracted_pe_file.exe

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
712	powershell.exe
1192	bypass_ps1_extracted_pe_file.exe
1192	bypass_ps1_extracted_pe_file.exe
1192	bypass_ps1_extracted_pe_file.exe
1192	bypass_ps1_extracted_pe_file.exe
1192	bypass_ps1_extracted_pe_file.exe
1192	bypass_ps1_extracted_pe_file.exe
1192	bypass_ps1_extracted_pe_file.exe
1192	bypass_ps1_extracted_pe_file.exe
1192	bypass_ps1_extracted_pe_file.exe
1192	bypass_ps1_extracted_pe_file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1192	bypass_ps1_extracted_pe_file.exe
Token: SeDebugPrivilege	712	powershell.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1192 wrote to memory of 712	1192	bypass_ps1_extracted_pe_file.exe	27
PID 1192 wrote to memory of 712	1192	bypass_ps1_extracted_pe_file.exe	27
PID 1192 wrote to memory of 712	1192	bypass_ps1_extracted_pe_file.exe	27
PID 1192 wrote to memory of 696	1192	bypass_ps1_extracted_pe_file.exe	29
PID 1192 wrote to memory of 696	1192	bypass_ps1_extracted_pe_file.exe	29
PID 1192 wrote to memory of 696	1192	bypass_ps1_extracted_pe_file.exe	29
PID 1192 wrote to memory of 1556	1192	bypass_ps1_extracted_pe_file.exe	30
PID 1192 wrote to memory of 1556	1192	bypass_ps1_extracted_pe_file.exe	30
PID 1192 wrote to memory of 1556	1192	bypass_ps1_extracted_pe_file.exe	30
PID 1192 wrote to memory of 1704	1192	bypass_ps1_extracted_pe_file.exe	31
PID 1192 wrote to memory of 1704	1192	bypass_ps1_extracted_pe_file.exe	31
PID 1192 wrote to memory of 1704	1192	bypass_ps1_extracted_pe_file.exe	31
PID 1192 wrote to memory of 1872	1192	bypass_ps1_extracted_pe_file.exe	32
PID 1192 wrote to memory of 1872	1192	bypass_ps1_extracted_pe_file.exe	32
PID 1192 wrote to memory of 1872	1192	bypass_ps1_extracted_pe_file.exe	32
PID 1192 wrote to memory of 900	1192	bypass_ps1_extracted_pe_file.exe	33
PID 1192 wrote to memory of 900	1192	bypass_ps1_extracted_pe_file.exe	33
PID 1192 wrote to memory of 900	1192	bypass_ps1_extracted_pe_file.exe	33
PID 1192 wrote to memory of 568	1192	bypass_ps1_extracted_pe_file.exe	34
PID 1192 wrote to memory of 568	1192	bypass_ps1_extracted_pe_file.exe	34
PID 1192 wrote to memory of 568	1192	bypass_ps1_extracted_pe_file.exe	34
PID 1192 wrote to memory of 1980	1192	bypass_ps1_extracted_pe_file.exe	35
PID 1192 wrote to memory of 1980	1192	bypass_ps1_extracted_pe_file.exe	35
PID 1192 wrote to memory of 1980	1192	bypass_ps1_extracted_pe_file.exe	35
PID 1192 wrote to memory of 1540	1192	bypass_ps1_extracted_pe_file.exe	36
PID 1192 wrote to memory of 1540	1192	bypass_ps1_extracted_pe_file.exe	36
PID 1192 wrote to memory of 1540	1192	bypass_ps1_extracted_pe_file.exe	36
PID 1192 wrote to memory of 1764	1192	bypass_ps1_extracted_pe_file.exe	37
PID 1192 wrote to memory of 1764	1192	bypass_ps1_extracted_pe_file.exe	37
PID 1192 wrote to memory of 1764	1192	bypass_ps1_extracted_pe_file.exe	37
PID 1192 wrote to memory of 1984	1192	bypass_ps1_extracted_pe_file.exe	38
PID 1192 wrote to memory of 1984	1192	bypass_ps1_extracted_pe_file.exe	38
PID 1192 wrote to memory of 1984	1192	bypass_ps1_extracted_pe_file.exe	38

C:\Users\Admin\AppData\Local\Temp\bypass_ps1_extracted_pe_file.exe
"C:\Users\Admin\AppData\Local\Temp\bypass_ps1_extracted_pe_file.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:712
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  2⤵
  PID:696
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  2⤵
  PID:1556
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  2⤵
  PID:1704
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  2⤵
  PID:1872
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  2⤵
  PID:900
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  2⤵
  PID:568
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  2⤵
  PID:1980
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  2⤵
  PID:1540
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  2⤵
  PID:1764
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
  2⤵
  PID:1984

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/712-10226-0x000000001B220000-0x000000001B502000-memory.dmp

Filesize
2.9MB

Download
memory/712-10237-0x0000000002720000-0x00000000027A0000-memory.dmp

Filesize
512KB

Download
memory/712-10236-0x0000000002720000-0x00000000027A0000-memory.dmp

Filesize
512KB

Download
memory/712-10235-0x0000000002720000-0x00000000027A0000-memory.dmp

Filesize
512KB

Download
memory/712-10234-0x0000000002720000-0x00000000027A0000-memory.dmp

Filesize
512KB

Download
memory/712-10231-0x0000000002720000-0x00000000027A0000-memory.dmp

Filesize
512KB

Download
memory/712-10230-0x0000000002720000-0x00000000027A0000-memory.dmp

Filesize
512KB

Download
memory/712-10227-0x0000000001FC0000-0x0000000001FC8000-memory.dmp

Filesize
32KB

Download
memory/1192-98-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-108-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-70-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-72-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-74-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-76-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-80-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-78-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-82-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-84-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-86-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-88-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-90-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-92-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-94-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-96-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-54-0x0000000000D70000-0x0000000000D9E000-memory.dmp

Filesize
184KB

Download
memory/1192-100-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-102-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-104-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-106-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-68-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-110-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-112-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-114-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-116-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-118-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-120-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-305-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/1192-66-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-64-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-10228-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/1192-10229-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/1192-62-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-60-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-10232-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/1192-57-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-58-0x000000001C760000-0x000000001CA3C000-memory.dmp

Filesize
2.9MB

Download
memory/1192-56-0x000000001C760000-0x000000001CA42000-memory.dmp

Filesize
2.9MB

Download
memory/1192-10233-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/1192-55-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/1192-10239-0x000000001B6A0000-0x000000001B75C000-memory.dmp

Filesize
752KB

Download