purecrypter | 464bf35525b6f482b91e5a1ba287c58304e7c41558c8070e42bdaa19769b5b05

General

Target

SMGS.exe
Size

4.8MB
MD5

973d6bb15efd90c87c861bb50682b4e0
SHA1

6be806023c19d7b332118bdc60ec2cabf4afd7a7
SHA256

464bf35525b6f482b91e5a1ba287c58304e7c41558c8070e42bdaa19769b5b05
SHA512

02355d9053c02c7470cdf6bde0a7d30ddf8a15a98c70dedf67a44639db3f92f1f961cb887e262b91eaeaeeef406e83c1294c690165afe2d7b50bae2e13896237
SSDEEP

24576:VBgHFLM9d5M7WbzMdMp+5R6hIONsEQ/xWxPNnb1T/d+BIPFsKmQhhEG6veOSV1jF:

Score

10^/10

purecrypter downloader loader persistence

Malware Config

Signatures

Detect PureCrypter injector 1 IoCs

loader

Processes:

resource	yara_rule
behavioral1/memory/1952-55-0x0000000006180000-0x00000000063E6000-memory.dmp	family_purecrypter

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

SMGS.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Zzycvoloo = "\"C:\\Users\\Admin\\AppData\\Roaming\\Nqtsofal\\Zzycvoloo.exe\""	SMGS.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

Processes:

powershell.exeSMGS.exe

pid process

828 powershell.exe
1952 SMGS.exe
1952 SMGS.exe
1952 SMGS.exe
1952 SMGS.exe
1952 SMGS.exe
1952 SMGS.exe
1952 SMGS.exe
1952 SMGS.exe
1952 SMGS.exe
1952 SMGS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

SMGS.exepowershell.exe

description pid process

Token: SeDebugPrivilege 1952 SMGS.exe
Token: SeDebugPrivilege 828 powershell.exe

pid	process
828	powershell.exe
1952	SMGS.exe
1952	SMGS.exe
1952	SMGS.exe
1952	SMGS.exe
1952	SMGS.exe
1952	SMGS.exe
1952	SMGS.exe
1952	SMGS.exe
1952	SMGS.exe
1952	SMGS.exe

description	pid	process
Token: SeDebugPrivilege	1952	SMGS.exe
Token: SeDebugPrivilege	828	powershell.exe

Suspicious use of WriteProcessMemory 44 IoCs

Processes:

SMGS.exe

description	pid	process	target process
PID 1952 wrote to memory of 828	1952	SMGS.exe	powershell.exe
PID 1952 wrote to memory of 828	1952	SMGS.exe	powershell.exe
PID 1952 wrote to memory of 828	1952	SMGS.exe	powershell.exe
PID 1952 wrote to memory of 828	1952	SMGS.exe	powershell.exe
PID 1952 wrote to memory of 1700	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1700	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1700	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1700	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1176	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1176	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1176	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1176	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1144	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1144	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1144	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1144	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 564	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 564	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 564	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 564	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 888	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 888	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 888	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 888	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1084	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1084	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1084	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1084	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1436	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1436	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1436	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 1436	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 908	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 908	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 908	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 908	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 892	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 892	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 892	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 892	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 336	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 336	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 336	1952	SMGS.exe	SMGS.exe
PID 1952 wrote to memory of 336	1952	SMGS.exe	SMGS.exe

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
"C:\Users\Admin\AppData\Local\Temp\SMGS.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1952

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:828

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
C:\Users\Admin\AppData\Local\Temp\SMGS.exe
2⤵
PID:1700

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
C:\Users\Admin\AppData\Local\Temp\SMGS.exe
2⤵
PID:1176

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
C:\Users\Admin\AppData\Local\Temp\SMGS.exe
2⤵
PID:1144

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
C:\Users\Admin\AppData\Local\Temp\SMGS.exe
2⤵
PID:564

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
C:\Users\Admin\AppData\Local\Temp\SMGS.exe
2⤵
PID:888

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
C:\Users\Admin\AppData\Local\Temp\SMGS.exe
2⤵
PID:1084

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
C:\Users\Admin\AppData\Local\Temp\SMGS.exe
2⤵
PID:1436

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
C:\Users\Admin\AppData\Local\Temp\SMGS.exe
2⤵
PID:908

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
C:\Users\Admin\AppData\Local\Temp\SMGS.exe
2⤵
PID:892

C:\Users\Admin\AppData\Local\Temp\SMGS.exe
C:\Users\Admin\AppData\Local\Temp\SMGS.exe
2⤵
PID:336

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/828-56-0x0000000000000000-mapping.dmp

Download
memory/828-57-0x0000000075E31000-0x0000000075E33000-memory.dmp

Filesize
8KB

Download
memory/828-58-0x000000006FCC0000-0x000000007026B000-memory.dmp

Filesize
5.7MB

Download
memory/828-59-0x000000006FCC0000-0x000000007026B000-memory.dmp

Filesize
5.7MB

Download
memory/828-60-0x000000006FCC0000-0x000000007026B000-memory.dmp

Filesize
5.7MB

Download
memory/1952-54-0x00000000000B0000-0x0000000000578000-memory.dmp

Filesize
4.8MB

Download
memory/1952-55-0x0000000006180000-0x00000000063E6000-memory.dmp

Filesize
2.4MB

Download
memory/1952-61-0x0000000004F40000-0x0000000004F8A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads