purecrypter | 53ab8d99f27bef0bdbc4a0d0a02de34254fde15d202708e379bf2ff84d2ecfef

General

Target

FATURA VE BELGELER.exe
Size

6KB
MD5

8cdcf9d4502ce65a9bf4fcc5f5fa54d3
SHA1

b534efd9dd2902ab2172cc9f2f07fc8ff1acac0d
SHA256

53ab8d99f27bef0bdbc4a0d0a02de34254fde15d202708e379bf2ff84d2ecfef
SHA512

61379ff5617c577fa62c2fcbe4c2ae419f6a5f236edc7f0e1f4ceb356841fb500b0aa78291cacb0e33abf82b928058f225cfd5fb37879e71d370a6ceffd5e883
SSDEEP

96:DpMKEpKgeQV6lfxV9n5Hl9cItU2RM1FVbWm7atAkuaLzNt:DuKTqQl/95HnZtJy9bWqa/DN

Score

10^/10

purecrypter snakekeylogger collection downloader evasion keylogger loader stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot5883437677:AAHeJkSINF-WhhSkVwvmtUtf8IUR1jbdjNM/sendMessage?chat_id=5739567068

Signatures

Detect PureCrypter injector 1 IoCs

loader

Processes:

resource	yara_rule
behavioral1/memory/1884-56-0x0000000005830000-0x000000000589E000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
stealer keylogger snakekeylogger

Snake Keylogger payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1576-66-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1576-68-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1576-69-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1576-70-0x0000000000420BFE-mapping.dmp	family_snakekeylogger
behavioral1/memory/1576-72-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1576-74-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

REG.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	REG.exe

Disables Task Manager via registry modification
evasion

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

6 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

FATURA VE BELGELER.exe

description pid process target process

PID 1884 set thread context of 1576 1884 FATURA VE BELGELER.exe MSBuild.exe
Drops file in Windows directory 1 IoCs

Processes:

MSBuild.exe

description ioc process

File opened for modification C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe MSBuild.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1388 REG.exe

flow	ioc
6	checkip.dyndns.org

description	pid	process	target process
PID 1884 set thread context of 1576	1884	FATURA VE BELGELER.exe	MSBuild.exe

description	ioc	process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe	MSBuild.exe

pid	process
1388	REG.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

FATURA VE BELGELER.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	FATURA VE BELGELER.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	FATURA VE BELGELER.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exeFATURA VE BELGELER.exeMSBuild.exe

pid process

764 powershell.exe
1884 FATURA VE BELGELER.exe
1576 MSBuild.exe
1576 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

FATURA VE BELGELER.exepowershell.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1884 FATURA VE BELGELER.exe
Token: SeDebugPrivilege 764 powershell.exe
Token: SeDebugPrivilege 1576 MSBuild.exe

pid	process
764	powershell.exe
1884	FATURA VE BELGELER.exe
1576	MSBuild.exe
1576	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1884	FATURA VE BELGELER.exe
Token: SeDebugPrivilege	764	powershell.exe
Token: SeDebugPrivilege	1576	MSBuild.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

FATURA VE BELGELER.exeMSBuild.exe

description	pid	process	target process
PID 1884 wrote to memory of 764	1884	FATURA VE BELGELER.exe	powershell.exe
PID 1884 wrote to memory of 764	1884	FATURA VE BELGELER.exe	powershell.exe
PID 1884 wrote to memory of 764	1884	FATURA VE BELGELER.exe	powershell.exe
PID 1884 wrote to memory of 764	1884	FATURA VE BELGELER.exe	powershell.exe
PID 1884 wrote to memory of 928	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 928	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 928	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 928	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 1576	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 1576	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 1576	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 1576	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 1576	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 1576	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 1576	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 1576	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1884 wrote to memory of 1576	1884	FATURA VE BELGELER.exe	MSBuild.exe
PID 1576 wrote to memory of 1388	1576	MSBuild.exe	REG.exe
PID 1576 wrote to memory of 1388	1576	MSBuild.exe	REG.exe
PID 1576 wrote to memory of 1388	1576	MSBuild.exe	REG.exe
PID 1576 wrote to memory of 1388	1576	MSBuild.exe	REG.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\FATURA VE BELGELER.exe
"C:\Users\Admin\AppData\Local\Temp\FATURA VE BELGELER.exe"
1⤵
- Suspicious use of SetThreadContext
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1884

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:764

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
2⤵
PID:928

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
2⤵
- Accesses Microsoft Outlook profiles
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1576

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 1 /f
3⤵
- Disables RegEdit via registry modification
- Modifies registry key
PID:1388

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Install Root Certificate

1

T1130

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/764-60-0x000000006E380000-0x000000006E92B000-memory.dmp

Filesize
5.7MB

Download
memory/764-62-0x000000006E380000-0x000000006E92B000-memory.dmp

Filesize
5.7MB

Download
memory/764-61-0x000000006E380000-0x000000006E92B000-memory.dmp

Filesize
5.7MB

Download
memory/764-58-0x0000000000000000-mapping.dmp

Download
memory/1388-76-0x0000000000000000-mapping.dmp

Download
memory/1576-63-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1576-64-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1576-66-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1576-68-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1576-69-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1576-70-0x0000000000420BFE-mapping.dmp

Download
memory/1576-72-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1576-74-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1884-57-0x00000000060D0000-0x0000000006162000-memory.dmp

Filesize
584KB

Download
memory/1884-56-0x0000000005830000-0x000000000589E000-memory.dmp

Filesize
440KB

Download
memory/1884-54-0x00000000002C0000-0x00000000002C8000-memory.dmp

Filesize
32KB

Download
memory/1884-55-0x0000000075201000-0x0000000075203000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads