purecrypter | 3cc08755e17790f6152c50cf98ae474e49011e2407fd3f327ac3919d1b503f14

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2023 00:20

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General

Target

setupov16.exe
Size

271.7MB
MD5

afc107122f9018050f0a1201e6d096a2
SHA1

97a56e7492d86791e8d880fb3c530f0812c04244
SHA256

3cc08755e17790f6152c50cf98ae474e49011e2407fd3f327ac3919d1b503f14
SHA512

417cc8614bd4f4d9d450d6a497b0e69cb98b21c3b4a95bb46b8fa08983be6842c9ac1c7af48b23734d42fc5cdaa21c4e0fe335dcb5918b7905ebe51eae8f6f4f
SSDEEP

96:LmJQaxddLegL2RZBz+4O0OFKqWZkr8lGDwaYz2N924vBM4zNt:LmJJdLD2TNp3q1YQDDYzi9faa

Score

10^/10

purecrypter discovery downloader loader persistence spyware stealer

Malware Config

Extracted

Family

purecrypter

http://comicmaster.org.uk/img/css/design/fabric/bo/Kvxut.dat

Signatures

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	setupov16.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	setupov16.exe

Executes dropped EXE 2 IoCs

pid	Process
424	w3o94SnB.exe
4744	ntlhost.exe

Loads dropped DLL 3 IoCs

pid	Process
4948	setupov16.exe
4948	setupov16.exe
4948	setupov16.exe

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

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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NTSystem = "C:\\Users\\Admin\\AppData\\Roaming\\NTSystem\\ntlhost.exe"	w3o94SnB.exe

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 3708 set thread context of 4948	3708	setupov16.exe	90

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

GoLang User-Agent 1 IoCs

Uses default user-agent string defined by GoLang HTTP packages.

description	flow	ioc
HTTP User-Agent header	67	Go-http-client/1.1

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4084	powershell.exe
4084	powershell.exe
2696	powershell.exe
2696	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3708	setupov16.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	2696	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3708 wrote to memory of 4084	3708	setupov16.exe	79
PID 3708 wrote to memory of 4084	3708	setupov16.exe	79
PID 3708 wrote to memory of 4084	3708	setupov16.exe	79
PID 3708 wrote to memory of 3684	3708	setupov16.exe	88
PID 3708 wrote to memory of 3684	3708	setupov16.exe	88
PID 3708 wrote to memory of 3684	3708	setupov16.exe	88
PID 3708 wrote to memory of 4948	3708	setupov16.exe	90
PID 3708 wrote to memory of 4948	3708	setupov16.exe	90
PID 3708 wrote to memory of 4948	3708	setupov16.exe	90
PID 3708 wrote to memory of 4948	3708	setupov16.exe	90
PID 3708 wrote to memory of 4948	3708	setupov16.exe	90
PID 3708 wrote to memory of 4948	3708	setupov16.exe	90
PID 3708 wrote to memory of 4948	3708	setupov16.exe	90
PID 3708 wrote to memory of 4948	3708	setupov16.exe	90
PID 3684 wrote to memory of 2696	3684	cmd.exe	91
PID 3684 wrote to memory of 2696	3684	cmd.exe	91
PID 3684 wrote to memory of 2696	3684	cmd.exe	91
PID 4948 wrote to memory of 424	4948	setupov16.exe	92
PID 4948 wrote to memory of 424	4948	setupov16.exe	92
PID 424 wrote to memory of 4744	424	w3o94SnB.exe	93
PID 424 wrote to memory of 4744	424	w3o94SnB.exe	93

C:\Users\Admin\AppData\Local\Temp\setupov16.exe
"C:\Users\Admin\AppData\Local\Temp\setupov16.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3708
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwA1AA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3684
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2696
- C:\Users\Admin\AppData\Local\Temp\setupov16.exe
  C:\Users\Admin\AppData\Local\Temp\setupov16.exe
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:4948
- - C:\Users\Admin\AppData\Local\Temp\w3o94SnB.exe
    "C:\Users\Admin\AppData\Local\Temp\w3o94SnB.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of WriteProcessMemory
    PID:424
  - - C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
      C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
      4⤵
      Executes dropped EXE
      PID:4744

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\mozglue.dll

Filesize
612KB

MD5
f07d9977430e762b563eaadc2b94bbfa

SHA1
da0a05b2b8d269fb73558dfcf0ed5c167f6d3877

SHA256
4191faf7e5eb105a0f4c5c6ed3e9e9c71014e8aa39bbee313bc92d1411e9e862

SHA512
6afd512e4099643bba3fc7700dd72744156b78b7bda10263ba1f8571d1e282133a433215a9222a7799f9824f244a2bc80c2816a62de1497017a4b26d562b7eaf

Download Submit
C:\Users\Admin\AppData\LocalLow\nss3.dll

Filesize
1.9MB

MD5
f67d08e8c02574cbc2f1122c53bfb976

SHA1
6522992957e7e4d074947cad63189f308a80fcf2

SHA256
c65b7afb05ee2b2687e6280594019068c3d3829182dfe8604ce4adf2116cc46e

SHA512
2e9d0a211d2b085514f181852fae6e7ca6aed4d29f396348bedb59c556e39621810a9a74671566a49e126ec73a60d0f781fa9085eb407df1eefd942c18853be5

Download Submit
C:\Users\Admin\AppData\LocalLow\sqlite3.dll

Filesize
1.0MB

MD5
dbf4f8dcefb8056dc6bae4b67ff810ce

SHA1
bbac1dd8a07c6069415c04b62747d794736d0689

SHA256
47b64311719000fa8c432165a0fdcdfed735d5b54977b052de915b1cbbbf9d68

SHA512
b572ca2f2e4a5cc93e4fcc7a18c0ae6df888aa4c55bc7da591e316927a4b5cfcbdda6e60018950be891ff3b26f470cc5cce34d217c2d35074322ab84c32a25d1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
1KB

MD5
4280e36a29fa31c01e4d8b2ba726a0d8

SHA1
c485c2c9ce0a99747b18d899b71dfa9a64dabe32

SHA256
e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359

SHA512
494fe5f0ade03669e5830bed93c964d69b86629440148d7b0881cf53203fd89443ebff9b4d1ee9d96244f62af6edede622d9eacba37f80f389a0d522e4ad4ea4

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache

Filesize
53KB

MD5
06ad34f9739c5159b4d92d702545bd49

SHA1
9152a0d4f153f3f40f7e606be75f81b582ee0c17

SHA256
474813b625f00710f29fa3b488235a6a22201851efb336bddf60d7d24a66bfba

SHA512
c272cd28ae164d465b779163ba9eca6a28261376414c6bbdfbd9f2128adb7f7ff1420e536b4d6000d0301ded2ec9036bc5c657588458bff41f176bdce8d74f92

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
16KB

MD5
5b5af2cf2b52c41a6db5bb2ae4e22a09

SHA1
fdc219b9f65dc07e3c47165393e92d1a73ba25dc

SHA256
75484d9d496159efc5a11b30f1e6b6839ff1166e82677a333c72380190f07553

SHA512
42791967d9ee85939bda3ed7024c862ab74d1a9a48781363d6796b8807a08d738911880d5519e477f1401ebdd467ce916d883f008c1ce1983976243834ddc101

Download Submit
C:\Users\Admin\AppData\Local\Temp\w3o94SnB.exe

Filesize
4.0MB

MD5
feccda803ece2e7a3b7e9798714ad47e

SHA1
e97182adccf8a7692e6ad2614b0fb7fd3898a1a2

SHA256
14529dca41abfea65abb51c84ec34ba0a951581586f98cef60213ae949a78320

SHA512
dec5fd4d184772ca590333b2382706c6e5a7b5050f9ae98af813192e06500424870e8332a1406c763e5cc6d266ddd7e09280b6bf118392fa6edea6fab5843287

Download Submit
C:\Users\Admin\AppData\Local\Temp\w3o94SnB.exe

Filesize
4.0MB

MD5
feccda803ece2e7a3b7e9798714ad47e

SHA1
e97182adccf8a7692e6ad2614b0fb7fd3898a1a2

SHA256
14529dca41abfea65abb51c84ec34ba0a951581586f98cef60213ae949a78320

SHA512
dec5fd4d184772ca590333b2382706c6e5a7b5050f9ae98af813192e06500424870e8332a1406c763e5cc6d266ddd7e09280b6bf118392fa6edea6fab5843287

Download Submit
C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe

Filesize
717.0MB

MD5
11989b731bb7c3012f3034a82ff805a0

SHA1
e5655529477c11a7568396ee1cc353e7fb056db4

SHA256
4273a83f6abe728f884eac25a51d2e9aeb4291ad7e54486153c0c58442607ed3

SHA512
7d1bfe8dbb74d59fd6727e5e18200525ca1666428019d8b4f5ff7aaf50a35c8ba7da5f083faa1e913f39b4027a90a980aa84970f5413804d56d6df0793c85d07

Download Submit
C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe

Filesize
717.0MB

MD5
11989b731bb7c3012f3034a82ff805a0

SHA1
e5655529477c11a7568396ee1cc353e7fb056db4

SHA256
4273a83f6abe728f884eac25a51d2e9aeb4291ad7e54486153c0c58442607ed3

SHA512
7d1bfe8dbb74d59fd6727e5e18200525ca1666428019d8b4f5ff7aaf50a35c8ba7da5f083faa1e913f39b4027a90a980aa84970f5413804d56d6df0793c85d07

Download Submit
memory/2696-160-0x00000000063B0000-0x00000000063BE000-memory.dmp

Filesize
56KB

Download
memory/2696-156-0x0000000007B20000-0x0000000007BB6000-memory.dmp

Filesize
600KB

Download
memory/2696-162-0x0000000007A60000-0x0000000007A68000-memory.dmp

Filesize
32KB

Download
memory/2696-161-0x0000000007A80000-0x0000000007A9A000-memory.dmp

Filesize
104KB

Download
memory/2696-152-0x00000000076F0000-0x0000000007722000-memory.dmp

Filesize
200KB

Download
memory/2696-153-0x0000000070140000-0x000000007018C000-memory.dmp

Filesize
304KB

Download
memory/2696-154-0x00000000076B0000-0x00000000076CE000-memory.dmp

Filesize
120KB

Download
memory/2696-155-0x00000000078D0000-0x00000000078DA000-memory.dmp

Filesize
40KB

Download
memory/3708-133-0x00000000064E0000-0x0000000006502000-memory.dmp

Filesize
136KB

Download
memory/3708-132-0x00000000007A0000-0x00000000007A8000-memory.dmp

Filesize
32KB

Download
memory/4084-140-0x0000000007A40000-0x00000000080BA000-memory.dmp

Filesize
6.5MB

Download
memory/4084-136-0x0000000005400000-0x0000000005A28000-memory.dmp

Filesize
6.2MB

Download
memory/4084-139-0x00000000061E0000-0x00000000061FE000-memory.dmp

Filesize
120KB

Download
memory/4084-138-0x0000000005B50000-0x0000000005BB6000-memory.dmp

Filesize
408KB

Download
memory/4084-141-0x00000000066D0000-0x00000000066EA000-memory.dmp

Filesize
104KB

Download
memory/4084-135-0x0000000002BF0000-0x0000000002C26000-memory.dmp

Filesize
216KB

Download
memory/4084-137-0x0000000005A30000-0x0000000005A96000-memory.dmp

Filesize
408KB

Download
memory/4948-150-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/4948-163-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/4948-144-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/4948-147-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download