purecrypter | d060ee3029a154a6fba6ed666ee5fafb2c8ee019dcfde0819f8aa24392b6e944

General

Target

Setup.exe
Size

2.5MB
MD5

49884eec4a8dcafe6d2993865154cdf4
SHA1

8b801c2d83b7602d350734bc3de5de7b9df73436
SHA256

d060ee3029a154a6fba6ed666ee5fafb2c8ee019dcfde0819f8aa24392b6e944
SHA512

052a2b2706168351060dbd8c725be3cdd4659ee79ea78daaa61674218145ea2e016e8e0100f27aadd0b79ebb46e51d2eca4bc103ca2a4723c50ac7063c745af0
SSDEEP

49152:V2+9WCvHTdprm74MntR2XTw5lKX0Zu04iXgIHuxCt8DccbasI:V2p2Td9mVtR2XTol80Zu04iXgHI8DM

Score

10^/10

purecrypter discovery downloader loader spyware stealer

Malware Config

Signatures

Detect PureCrypter injector 1 IoCs

loader

Processes:

resource	yara_rule
behavioral1/memory/1260-56-0x0000000005160000-0x00000000053D2000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Downloads MZ/PE file
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

736 cmd.exe
Loads dropped DLL 2 IoCs

Processes:

Setup.exe

pid process

888 Setup.exe
888 Setup.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Suspicious use of SetThreadContext 1 IoCs

Processes:

Setup.exe

description pid process target process

PID 1260 set thread context of 888 1260 Setup.exe Setup.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
736	cmd.exe

pid	process
888	Setup.exe
888	Setup.exe

description	pid	process	target process
PID 1260 set thread context of 888	1260	Setup.exe	Setup.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Setup.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Setup.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Setup.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

864 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Setup.exeSetup.exe

pid process

1260 Setup.exe
888 Setup.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Setup.exe

description pid process

Token: SeDebugPrivilege 1260 Setup.exe

pid	process
864	timeout.exe

pid	process
1260	Setup.exe
888	Setup.exe

description	pid	process
Token: SeDebugPrivilege	1260	Setup.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

Setup.exeSetup.execmd.exe

description	pid	process	target process
PID 1260 wrote to memory of 1680	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 1680	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 1680	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 1680	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 1680	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 1680	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 1680	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 1260 wrote to memory of 888	1260	Setup.exe	Setup.exe
PID 888 wrote to memory of 736	888	Setup.exe	cmd.exe
PID 888 wrote to memory of 736	888	Setup.exe	cmd.exe
PID 888 wrote to memory of 736	888	Setup.exe	cmd.exe
PID 888 wrote to memory of 736	888	Setup.exe	cmd.exe
PID 736 wrote to memory of 864	736	cmd.exe	timeout.exe
PID 736 wrote to memory of 864	736	cmd.exe	timeout.exe
PID 736 wrote to memory of 864	736	cmd.exe	timeout.exe
PID 736 wrote to memory of 864	736	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\Setup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1260

C:\Users\Admin\AppData\Local\Temp\Setup.exe
C:\Users\Admin\AppData\Local\Temp\Setup.exe
2⤵
PID:1680

C:\Users\Admin\AppData\Local\Temp\Setup.exe
C:\Users\Admin\AppData\Local\Temp\Setup.exe
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:888

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\Setup.exe" & del "C:\ProgramData\*.dll"" & exit
3⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:736

C:\Windows\SysWOW64\timeout.exe
timeout /t 5
4⤵
- Delays execution with timeout.exe
PID:864

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

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Downloads

\ProgramData\mozglue.dll
Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll
Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/736-93-0x0000000000000000-mapping.dmp

Download
memory/864-95-0x0000000000000000-mapping.dmp

Download
memory/888-65-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/888-58-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/888-61-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/888-63-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/888-94-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/888-67-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/888-68-0x000000000040CF21-mapping.dmp

Download
memory/888-70-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/888-72-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/888-73-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/888-59-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/1260-57-0x00000000011F0000-0x000000000123C000-memory.dmp

Filesize
304KB

Download
memory/1260-56-0x0000000005160000-0x00000000053D2000-memory.dmp

Filesize
2.4MB

Download
memory/1260-54-0x00000000753F1000-0x00000000753F3000-memory.dmp

Filesize
8KB

Download
memory/1260-55-0x00000000013A0000-0x000000000162A000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads