purecrypter | 17d9ea316738afcac65b55560be4b85d1add5df729474aba804b39fe4123d9b5

Analysis

max time kernel
150s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
04-04-2023 09:03

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General

Target

3.exe
Size

3.1MB
MD5

a250763ca9419cce8d12b2bff06c9cec
SHA1

12337290c7b6b4537a0ffcfa24c6089fcab06e34
SHA256

17d9ea316738afcac65b55560be4b85d1add5df729474aba804b39fe4123d9b5
SHA512

c361ca24e0616cea772a4ad3669f740ed7d36d8ac6a9d7f203d236ad1031b69e5ccbad3d474770b326e97372af2a81b10da50170b3fe9244974b4acbe15c06c0
SSDEEP

49152:ddjqq/hVlVc7X5WOSxf8CHAdXA8YRFiamKcgJ0JLzxB9aWkSyI:dddvcr5WHf8yAy8AijK30dzD9aWf

Score

10^/10

purecrypter downloader loader

Malware Config

Signatures

Detect PureCrypter injector 33 IoCs

loader

resource	yara_rule
behavioral2/memory/4940-135-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-136-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-138-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-140-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-142-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-144-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-146-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-148-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-150-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-152-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-156-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-154-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-158-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-160-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-162-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-164-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-166-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-168-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-170-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-172-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-174-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-176-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-178-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-180-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-182-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-184-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-186-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-188-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-190-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-192-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-194-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-196-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter
behavioral2/memory/4940-198-0x0000000005410000-0x000000000572E000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	3.exe

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 2 IoCs

pid	Process
4456	powershell.exe
4456	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	3.exe
Token: SeDebugPrivilege	4456	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 4456	4940	3.exe	91
PID 4940 wrote to memory of 4456	4940	3.exe	91
PID 4940 wrote to memory of 4456	4940	3.exe	91

C:\Users\Admin\AppData\Local\Temp\3.exe
"C:\Users\Admin\AppData\Local\Temp\3.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4940
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4456

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yiubglus.gvu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4456-10269-0x0000000002D80000-0x0000000002DB6000-memory.dmp

Filesize
216KB

Download
memory/4456-10284-0x0000000006360000-0x000000000637E000-memory.dmp

Filesize
120KB

Download
memory/4456-10283-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

Filesize
64KB

Download
memory/4456-10282-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

Filesize
64KB

Download
memory/4456-10272-0x0000000005D10000-0x0000000005D76000-memory.dmp

Filesize
408KB

Download
memory/4456-10271-0x0000000005540000-0x00000000055A6000-memory.dmp

Filesize
408KB

Download
memory/4456-10270-0x00000000055F0000-0x0000000005C18000-memory.dmp

Filesize
6.2MB

Download
memory/4940-174-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-184-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-150-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-152-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-156-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-154-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-158-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-160-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-162-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-164-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-166-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-168-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-170-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-172-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-133-0x00000000007B0000-0x0000000000ADC000-memory.dmp

Filesize
3.2MB

Download
memory/4940-176-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-178-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-180-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-182-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-148-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-186-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-188-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-190-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-192-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-194-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-196-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-198-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-518-0x0000000005400000-0x0000000005410000-memory.dmp

Filesize
64KB

Download
memory/4940-10268-0x00000000011C0000-0x00000000011E2000-memory.dmp

Filesize
136KB

Download
memory/4940-146-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-144-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-142-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-140-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-138-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-136-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-135-0x0000000005410000-0x000000000572E000-memory.dmp

Filesize
3.1MB

Download
memory/4940-134-0x0000000005400000-0x0000000005410000-memory.dmp

Filesize
64KB

Download