purecrypter | ae80e5dd014bf7859015c477e29616e6499c765552de0b95d38e8160b5515fb2

General

Target

Installer_1.0.8_win64_86-setup+manual/Setup.exe
Size

686.1MB
MD5

d8dc5a67c3749704c5b4be34b233a788
SHA1

8fe3cbba1bf42d9ae8a1e76960ca10d50ce71172
SHA256

0a6bfeeb983db4a588d699805b53af3e6a6cd67920117fc36fde1fe84a8794ed
SHA512

ae78cb2cf9af9bc7aad3b7e1d2ab4a541fc513db8d4b3a17f0ce93a910f72ba02d28db51b592da5d6ea11e3e4b777b09a26ad21f1a7720f8ce1aa3d0bb915f1d
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
behavioral3/memory/1644-56-0x00000000052B0000-0x0000000005522000-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

1620 cmd.exe
Loads dropped DLL 2 IoCs

Processes:

Setup.exe

pid process

1416 Setup.exe
1416 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 1644 set thread context of 1416 1644 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
1620	cmd.exe

pid	process
1416	Setup.exe
1416	Setup.exe

description	pid	process	target process
PID 1644 set thread context of 1416	1644	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

364 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

Setup.exe

pid process

1416 Setup.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Setup.exe

description pid process

Token: SeDebugPrivilege 1644 Setup.exe

pid	process
364	timeout.exe

pid	process
1416	Setup.exe

description	pid	process
Token: SeDebugPrivilege	1644	Setup.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Setup.exeSetup.execmd.exe

description	pid	process	target process
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1644 wrote to memory of 1416	1644	Setup.exe	Setup.exe
PID 1416 wrote to memory of 1620	1416	Setup.exe	cmd.exe
PID 1416 wrote to memory of 1620	1416	Setup.exe	cmd.exe
PID 1416 wrote to memory of 1620	1416	Setup.exe	cmd.exe
PID 1416 wrote to memory of 1620	1416	Setup.exe	cmd.exe
PID 1620 wrote to memory of 364	1620	cmd.exe	timeout.exe
PID 1620 wrote to memory of 364	1620	cmd.exe	timeout.exe
PID 1620 wrote to memory of 364	1620	cmd.exe	timeout.exe
PID 1620 wrote to memory of 364	1620	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\Installer_1.0.8_win64_86-setup+manual\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\Installer_1.0.8_win64_86-setup+manual\Setup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1644

C:\Users\Admin\AppData\Local\Temp\Installer_1.0.8_win64_86-setup+manual\Setup.exe
C:\Users\Admin\AppData\Local\Temp\Installer_1.0.8_win64_86-setup+manual\Setup.exe
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1416

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\Installer_1.0.8_win64_86-setup+manual\Setup.exe" & del "C:\ProgramData\*.dll"" & exit
3⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1620

C:\Windows\SysWOW64\timeout.exe
timeout /t 5
4⤵
- Delays execution with timeout.exe
PID:364

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

Replay Monitor

Loading Replay Monitor...

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/364-95-0x0000000000000000-mapping.dmp

Download
memory/1416-65-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/1416-68-0x000000000040CF21-mapping.dmp

Download
memory/1416-59-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/1416-61-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/1416-63-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/1416-94-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/1416-67-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/1416-58-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/1416-70-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/1416-72-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/1416-73-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/1620-93-0x0000000000000000-mapping.dmp

Download
memory/1644-57-0x00000000026C0000-0x000000000270C000-memory.dmp

Filesize
304KB

Download
memory/1644-56-0x00000000052B0000-0x0000000005522000-memory.dmp

Filesize
2.4MB

Download
memory/1644-54-0x0000000075921000-0x0000000075923000-memory.dmp

Filesize
8KB

Download
memory/1644-55-0x0000000000CC0000-0x0000000000F4A000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads