purecrypter | 5020d7b12b16dc94b7850fd3e25189e2a5181657456c3322bc2168017f0d067d

General

Target

swift copy.exe
Size

159KB
MD5

a05dab3d9ba8ee173ad40f31f0fa340a
SHA1

4c5edd5d59c7a3b79b148e3e2b91271f7364e9ac
SHA256

5020d7b12b16dc94b7850fd3e25189e2a5181657456c3322bc2168017f0d067d
SHA512

2135a9525edb31514a624efb62d1aeb8c4c0359caabe6e6b1eee7754ed92e6491e633861308dde58ed4961e1e5e0e3fc8068d00e0062a11f853c1f2f6d396c92
SSDEEP

768:dukr+M0fV7RW1JbUGmp7NxryR27zAFEzD/xworhq:duke7RAJu7vryR2XSWwOhq

Score

10^/10

purecrypter snakekeylogger collection downloader keylogger loader stealer

Malware Config

Extracted

Family

purecrypter

C2

http://192.3.26.135/uo/Qjryxyrtsm.dat

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot5842658268:AAFa1TIZBWvKq67mLd-pTMwvO6MhstGffX8/sendMessage?chat_id=6202719269

Signatures

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 7 IoCs

resource	yara_rule
behavioral1/memory/1020-69-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1020-70-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1020-72-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1020-74-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1020-76-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1020-77-0x00000000011D0000-0x0000000001210000-memory.dmp	family_snakekeylogger
behavioral1/memory/1020-78-0x00000000011D0000-0x0000000001210000-memory.dmp	family_snakekeylogger

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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.

flow	ioc
6	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2040 set thread context of 1020	2040	swift copy.exe	30

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 3 IoCs

pid	Process
592	powershell.exe
1020	MSBuild.exe
1020	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2040	swift copy.exe
Token: SeDebugPrivilege	592	powershell.exe
Token: SeDebugPrivilege	1020	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 592	2040	swift copy.exe	28
PID 2040 wrote to memory of 592	2040	swift copy.exe	28
PID 2040 wrote to memory of 592	2040	swift copy.exe	28
PID 2040 wrote to memory of 592	2040	swift copy.exe	28
PID 2040 wrote to memory of 1020	2040	swift copy.exe	30
PID 2040 wrote to memory of 1020	2040	swift copy.exe	30
PID 2040 wrote to memory of 1020	2040	swift copy.exe	30
PID 2040 wrote to memory of 1020	2040	swift copy.exe	30
PID 2040 wrote to memory of 1020	2040	swift copy.exe	30
PID 2040 wrote to memory of 1020	2040	swift copy.exe	30
PID 2040 wrote to memory of 1020	2040	swift copy.exe	30
PID 2040 wrote to memory of 1020	2040	swift copy.exe	30
PID 2040 wrote to memory of 1020	2040	swift copy.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\swift copy.exe
"C:\Users\Admin\AppData\Local\Temp\swift copy.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2040
- 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:592
- 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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/592-61-0x00000000025D0000-0x0000000002610000-memory.dmp

Filesize
256KB

Download
memory/592-65-0x00000000025D0000-0x0000000002610000-memory.dmp

Filesize
256KB

Download
memory/592-64-0x00000000025D0000-0x0000000002610000-memory.dmp

Filesize
256KB

Download
memory/592-63-0x00000000025D0000-0x0000000002610000-memory.dmp

Filesize
256KB

Download
memory/592-60-0x00000000025D0000-0x0000000002610000-memory.dmp

Filesize
256KB

Download
memory/1020-67-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1020-71-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1020-78-0x00000000011D0000-0x0000000001210000-memory.dmp

Filesize
256KB

Download
memory/1020-77-0x00000000011D0000-0x0000000001210000-memory.dmp

Filesize
256KB

Download
memory/1020-76-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1020-74-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1020-68-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1020-69-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1020-70-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1020-72-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2040-62-0x0000000000450000-0x0000000000490000-memory.dmp

Filesize
256KB

Download
memory/2040-54-0x0000000000C20000-0x0000000000C4E000-memory.dmp

Filesize
184KB

Download
memory/2040-55-0x0000000000450000-0x0000000000490000-memory.dmp

Filesize
256KB

Download
memory/2040-56-0x00000000060B0000-0x00000000061F6000-memory.dmp

Filesize
1.3MB

Download
memory/2040-57-0x00000000058D0000-0x0000000005962000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads