purecrypter | 8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d

General

Target

file.exe
Size

2.8MB
MD5

094506dab589aa3933fe28379d607e4e
SHA1

78b35e6e1c254f31079ea22a35fe5e0dde83848b
SHA256

8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d
SHA512

5464a20e13a087fc56e441543d1182e2c7c80abd0156084d162a5b35cf0a357838b607f7956e07da6436ddc75abb22d7485c724b5770a6859f34d556ae0caa0e
SSDEEP

49152:ex04mKYkbtgQ/MwW/qvf7RZoVZZOHTjqFfK5r9oQSP1vh4CTRCC2OFj2OFS3:8juTq9zzWk99o11vhbTRCH3

Score

10^/10

purecrypter vidar 886 discovery downloader loader persistence spyware stealer

Malware Config

Extracted

Family

vidar

Version

2.3

Botnet

886

C2

https://t.me/mantarlars

https://steamcommunity.com/profiles/76561199474840123

Attributes

profile_id
886

Signatures

Detect PureCrypter injector 1 IoCs

loader

Processes:

resource	yara_rule
behavioral1/memory/1996-55-0x0000000004A70000-0x0000000004CFA000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2044 cmd.exe
Loads dropped DLL 2 IoCs

Processes:

file.exe

pid process

516 file.exe
516 file.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 2FA software files, possible credential harvesting 2 TTPs
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

pid	process
2044	cmd.exe

pid	process
516	file.exe
516	file.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

file.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mkfexvjrq = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ngueozpsjs\\Mkfexvjrq.exe\""	file.exe

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:

file.exe

description pid process target process

PID 1996 set thread context of 516 1996 file.exe file.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 1996 set thread context of 516	1996	file.exe	file.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:

file.exe

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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

548 timeout.exe

pid	process
548	timeout.exe

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

file.exe

description	ioc	process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	file.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	file.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25	file.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exefile.exe

pid process

1296 powershell.exe
516 file.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

file.exepowershell.exe

description pid process

Token: SeDebugPrivilege 1996 file.exe
Token: SeDebugPrivilege 1296 powershell.exe

pid	process
1296	powershell.exe
516	file.exe

description	pid	process
Token: SeDebugPrivilege	1996	file.exe
Token: SeDebugPrivilege	1296	powershell.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

file.exefile.execmd.exe

description	pid	process	target process
PID 1996 wrote to memory of 1296	1996	file.exe	powershell.exe
PID 1996 wrote to memory of 1296	1996	file.exe	powershell.exe
PID 1996 wrote to memory of 1296	1996	file.exe	powershell.exe
PID 1996 wrote to memory of 1296	1996	file.exe	powershell.exe
PID 1996 wrote to memory of 516	1996	file.exe	file.exe
PID 1996 wrote to memory of 516	1996	file.exe	file.exe
PID 1996 wrote to memory of 516	1996	file.exe	file.exe
PID 1996 wrote to memory of 516	1996	file.exe	file.exe
PID 1996 wrote to memory of 516	1996	file.exe	file.exe
PID 1996 wrote to memory of 516	1996	file.exe	file.exe
PID 1996 wrote to memory of 516	1996	file.exe	file.exe
PID 1996 wrote to memory of 516	1996	file.exe	file.exe
PID 1996 wrote to memory of 516	1996	file.exe	file.exe
PID 1996 wrote to memory of 516	1996	file.exe	file.exe
PID 516 wrote to memory of 2044	516	file.exe	cmd.exe
PID 516 wrote to memory of 2044	516	file.exe	cmd.exe
PID 516 wrote to memory of 2044	516	file.exe	cmd.exe
PID 516 wrote to memory of 2044	516	file.exe	cmd.exe
PID 2044 wrote to memory of 548	2044	cmd.exe	timeout.exe
PID 2044 wrote to memory of 548	2044	cmd.exe	timeout.exe
PID 2044 wrote to memory of 548	2044	cmd.exe	timeout.exe
PID 2044 wrote to memory of 548	2044	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1996

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:1296

C:\Users\Admin\AppData\Local\Temp\file.exe
C:\Users\Admin\AppData\Local\Temp\file.exe
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:516

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
3⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:2044

C:\Windows\SysWOW64\timeout.exe
timeout /t 6
4⤵
- Delays execution with timeout.exe
PID:548

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Install Root Certificate

1

T1130

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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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/516-70-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/516-75-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/516-73-0x000000000043211C-mapping.dmp

Download
memory/516-100-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/516-98-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/516-78-0x0000000051490000-0x0000000051583000-memory.dmp

Filesize
972KB

Download
memory/516-63-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/516-64-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/516-72-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/516-68-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/516-77-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/516-66-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/548-101-0x0000000000000000-mapping.dmp

Download
memory/1296-59-0x000000006F1B0000-0x000000006F75B000-memory.dmp

Filesize
5.7MB

Download
memory/1296-57-0x0000000000000000-mapping.dmp

Download
memory/1296-61-0x000000006F1B0000-0x000000006F75B000-memory.dmp

Filesize
5.7MB

Download
memory/1296-60-0x000000006F1B0000-0x000000006F75B000-memory.dmp

Filesize
5.7MB

Download
memory/1996-62-0x00000000050C0000-0x000000000512E000-memory.dmp

Filesize
440KB

Download
memory/1996-56-0x0000000075D61000-0x0000000075D63000-memory.dmp

Filesize
8KB

Download
memory/1996-55-0x0000000004A70000-0x0000000004CFA000-memory.dmp

Filesize
2.5MB

Download
memory/1996-54-0x0000000001110000-0x000000000139C000-memory.dmp

Filesize
2.5MB

Download
memory/2044-99-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads