purecrypter | 07a72d61154c37817fbb112e37e8a108886857d588c3df46cce7d84d92ca8ec6

General

Target

872ee416b911925c61ddd11d2f3eeb7b.exe
Size

7KB
MD5

872ee416b911925c61ddd11d2f3eeb7b
SHA1

0e67384a4b89fb49f8f007af35122955cbf1d310
SHA256

07a72d61154c37817fbb112e37e8a108886857d588c3df46cce7d84d92ca8ec6
SHA512

bb61899323d423147724ab9556006791452ae0d27c73c0fd07f1b4882c06f96001d7db154bab6e479c75137bf112656b9a79de499e79ddb189b982663f8e7977
SSDEEP

96:BG+1jsTi+wX7GEmPbnfK6IoP8ZY7ZMt5vdQ6k2CttLzNt:BG+eW+wXC9bfXPgGHf3N

Score

10^/10

purecrypter snakekeylogger collection downloader keylogger loader persistence spyware stealer

Malware Config

Extracted

Family

snakekeylogger

Credentials

Protocol: smtp
Host:
abdanprestigeholdings.com
Port:
587
Username:
[email protected]
Password:
Favourunlimited123456@
Email To:
[email protected]

Signatures

Detect PureCrypter injector 1 IoCs

loader

resource	yara_rule
behavioral1/memory/2016-56-0x00000000060F0000-0x0000000006360000-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

resource	yara_rule
behavioral1/memory/1144-66-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1144-68-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1144-70-0x00000000004207BE-mapping.dmp	family_snakekeylogger
behavioral1/memory/1144-69-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1144-72-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1144-74-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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 Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	872ee416b911925c61ddd11d2f3eeb7b.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	872ee416b911925c61ddd11d2f3eeb7b.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	872ee416b911925c61ddd11d2f3eeb7b.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Jeoeiojhj = "\"C:\\Users\\Admin\\AppData\\Roaming\\Pvbtr\\Jeoeiojhj.exe\""	872ee416b911925c61ddd11d2f3eeb7b.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
5	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2016 set thread context of 1144	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	29

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
520	powershell.exe
1144	872ee416b911925c61ddd11d2f3eeb7b.exe
1144	872ee416b911925c61ddd11d2f3eeb7b.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	872ee416b911925c61ddd11d2f3eeb7b.exe
Token: SeDebugPrivilege	520	powershell.exe
Token: SeDebugPrivilege	1144	872ee416b911925c61ddd11d2f3eeb7b.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 520	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	27
PID 2016 wrote to memory of 520	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	27
PID 2016 wrote to memory of 520	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	27
PID 2016 wrote to memory of 520	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	27
PID 2016 wrote to memory of 1144	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	29
PID 2016 wrote to memory of 1144	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	29
PID 2016 wrote to memory of 1144	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	29
PID 2016 wrote to memory of 1144	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	29
PID 2016 wrote to memory of 1144	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	29
PID 2016 wrote to memory of 1144	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	29
PID 2016 wrote to memory of 1144	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	29
PID 2016 wrote to memory of 1144	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	29
PID 2016 wrote to memory of 1144	2016	872ee416b911925c61ddd11d2f3eeb7b.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	872ee416b911925c61ddd11d2f3eeb7b.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	872ee416b911925c61ddd11d2f3eeb7b.exe

C:\Users\Admin\AppData\Local\Temp\872ee416b911925c61ddd11d2f3eeb7b.exe
"C:\Users\Admin\AppData\Local\Temp\872ee416b911925c61ddd11d2f3eeb7b.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016
- 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:520
- C:\Users\Admin\AppData\Local\Temp\872ee416b911925c61ddd11d2f3eeb7b.exe
  C:\Users\Admin\AppData\Local\Temp\872ee416b911925c61ddd11d2f3eeb7b.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1144

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/520-59-0x000000006F9F0000-0x000000006FF9B000-memory.dmp

Filesize
5.7MB

Download
memory/520-61-0x000000006F9F0000-0x000000006FF9B000-memory.dmp

Filesize
5.7MB

Download
memory/520-60-0x000000006F9F0000-0x000000006FF9B000-memory.dmp

Filesize
5.7MB

Download
memory/1144-63-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1144-66-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1144-64-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1144-68-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1144-69-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1144-72-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1144-74-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2016-56-0x00000000060F0000-0x0000000006360000-memory.dmp

Filesize
2.4MB

Download
memory/2016-55-0x00000000766D1000-0x00000000766D3000-memory.dmp

Filesize
8KB

Download
memory/2016-62-0x0000000004F90000-0x0000000004FDA000-memory.dmp

Filesize
296KB

Download
memory/2016-54-0x0000000000EF0000-0x0000000000EF8000-memory.dmp

Filesize
32KB

Download

Analysis

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