purecrypter | 047528fe2e0b207d93b51f21109eea05ece9bec290c8ddf22a09301bf262735a

General

Target

deflated-rufus_Installer.exe
Size

2.6MB
MD5

9814a046255e18128a7605b718efca93
SHA1

5d83e5f3931720fce6ccb43186391f3114124679
SHA256

047528fe2e0b207d93b51f21109eea05ece9bec290c8ddf22a09301bf262735a
SHA512

bf2f9346bc2296542ae6818df770ad922034e40eb35928c513189edb81df52a7f6b8f53b0b645785902c8ed30f2f578a5361d8bb6ebb8883d5d5f794d3bb20f0
SSDEEP

49152:3mJQWFAlO5SRY8mYzbNKrFtbrR4S2EypQ2QbQQ69cE:2HAOTYvYbDypQ2QbOF

Score

10^/10

purecrypter redline new discovery downloader infostealer loader spyware stealer

Malware Config

Extracted

Family

redline

Botnet

new

C2

194.87.71.146:49144

Attributes

auth_value
4c1607b6fe3d7ff96ea7cf54c0ad912c

Signatures

Detect PureCrypter injector 1 IoCs

loader

resource	yara_rule
behavioral1/memory/2036-56-0x0000000004D10000-0x0000000004F8A000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline
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

description	pid	Process	procid_target
PID 2036 set thread context of 1332	2036	deflated-rufus_Installer.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
2016	powershell.exe
1332	deflated-rufus_Installer.exe
1332	deflated-rufus_Installer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2036	deflated-rufus_Installer.exe
Token: SeDebugPrivilege	2016	powershell.exe
Token: SeDebugPrivilege	1332	deflated-rufus_Installer.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 2016	2036	deflated-rufus_Installer.exe	27
PID 2036 wrote to memory of 2016	2036	deflated-rufus_Installer.exe	27
PID 2036 wrote to memory of 2016	2036	deflated-rufus_Installer.exe	27
PID 2036 wrote to memory of 2016	2036	deflated-rufus_Installer.exe	27
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29
PID 2036 wrote to memory of 1332	2036	deflated-rufus_Installer.exe	29

C:\Users\Admin\AppData\Local\Temp\deflated-rufus_Installer.exe
"C:\Users\Admin\AppData\Local\Temp\deflated-rufus_Installer.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036
- 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:2016
- C:\Users\Admin\AppData\Local\Temp\deflated-rufus_Installer.exe
  C:\Users\Admin\AppData\Local\Temp\deflated-rufus_Installer.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1332

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1332-69-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1332-66-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1332-74-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1332-72-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1332-68-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1332-63-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1332-64-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2016-61-0x000000006F700000-0x000000006FCAB000-memory.dmp

Filesize
5.7MB

Download
memory/2016-60-0x000000006F700000-0x000000006FCAB000-memory.dmp

Filesize
5.7MB

Download
memory/2016-59-0x000000006F700000-0x000000006FCAB000-memory.dmp

Filesize
5.7MB

Download
memory/2036-55-0x00000000762D1000-0x00000000762D3000-memory.dmp

Filesize
8KB

Download
memory/2036-62-0x0000000005170000-0x00000000051BC000-memory.dmp

Filesize
304KB

Download
memory/2036-54-0x0000000000EA0000-0x0000000001138000-memory.dmp

Filesize
2.6MB

Download
memory/2036-56-0x0000000004D10000-0x0000000004F8A000-memory.dmp

Filesize
2.5MB

Download

Analysis

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