purecrypter | c5f1dfbf8d4b1d8d5c43f668292056d5b670fea174e6e79d3cc2ba341d66a21f

Analysis

max time kernel
109s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
18-02-2023 03:32

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General

Target

setup.exe
Size

565.8MB
MD5

b34cf82d7d10a1c8421ef3fe65e4de46
SHA1

574c8dd9986952916786b03c0261230a933f3e9d
SHA256

7e73c496079d96e4ccec427679b791518f25aaca20585a5d54f632064ff880ae
SHA512

69fb1cb2e37c7b3321ff898aac936233521026834c07b92a7c8fa7885a363f5b2a6d6d455309435802f70827bc7ecb955ed9e4c7a8fdbcde212bc479748647ed
SSDEEP

1536:8rae78zjORCDGwfdCSog01313fs5gG8m:kahKyd2n31E5d

Score

10^/10

purecrypter redline @fjiif563 discovery downloader infostealer loader persistence spyware stealer

Malware Config

Extracted

Family

purecrypter

https://speedysecurity.com.br/images/css/waves/bo/Upjcuf.bmp

Extracted

Family

redline

Botnet

@fjiif563

45.15.157.131:36457

Attributes

auth_value
ef361597d90539bf547a8edad2ebafde

Signatures

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

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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	setup_ovl11.exe

Executes dropped EXE 2 IoCs

pid	Process
1284	setup_ovl11.exe
3448	setup_ovl11.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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce	setup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	setup.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 1284 set thread context of 3448	1284	setup_ovl11.exe	92

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 6 IoCs

pid	Process
3852	powershell.exe
3852	powershell.exe
4504	powershell.exe
4504	powershell.exe
3448	setup_ovl11.exe
3448	setup_ovl11.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1284	setup_ovl11.exe
Token: SeDebugPrivilege	3852	powershell.exe
Token: SeDebugPrivilege	4504	powershell.exe
Token: SeDebugPrivilege	3448	setup_ovl11.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 1284	2644	setup.exe	81
PID 2644 wrote to memory of 1284	2644	setup.exe	81
PID 2644 wrote to memory of 1284	2644	setup.exe	81
PID 1284 wrote to memory of 3852	1284	setup_ovl11.exe	87
PID 1284 wrote to memory of 3852	1284	setup_ovl11.exe	87
PID 1284 wrote to memory of 3852	1284	setup_ovl11.exe	87
PID 1284 wrote to memory of 2972	1284	setup_ovl11.exe	89
PID 1284 wrote to memory of 2972	1284	setup_ovl11.exe	89
PID 1284 wrote to memory of 2972	1284	setup_ovl11.exe	89
PID 2972 wrote to memory of 4504	2972	cmd.exe	91
PID 2972 wrote to memory of 4504	2972	cmd.exe	91
PID 2972 wrote to memory of 4504	2972	cmd.exe	91
PID 1284 wrote to memory of 3448	1284	setup_ovl11.exe	92
PID 1284 wrote to memory of 3448	1284	setup_ovl11.exe	92
PID 1284 wrote to memory of 3448	1284	setup_ovl11.exe	92
PID 1284 wrote to memory of 3448	1284	setup_ovl11.exe	92
PID 1284 wrote to memory of 3448	1284	setup_ovl11.exe	92
PID 1284 wrote to memory of 3448	1284	setup_ovl11.exe	92
PID 1284 wrote to memory of 3448	1284	setup_ovl11.exe	92
PID 1284 wrote to memory of 3448	1284	setup_ovl11.exe	92

C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\setup_ovl11.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\setup_ovl11.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1284
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwA1AA==
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3852
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2972
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4504
- - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\setup_ovl11.exe
    C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\setup_ovl11.exe
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3448

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\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
1KB

MD5
6195a91754effb4df74dbc72cdf4f7a6

SHA1
aba262f5726c6d77659fe0d3195e36a85046b427

SHA256
3254495a5513b37a2686a876d0040275414699e7ce760e7b5ee05e41a54b96f5

SHA512
ed723d15de267390dc93263538428e2c881be3494c996a810616b470d6df7d5acfcc8725687d5c50319ebef45caef44f769bfc32e0dc3abd249dacff4a12cc89

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\setup_ovl11.exe.log

Filesize
1KB

MD5
3a9188331a78f1dbce606db64b841fcb

SHA1
8e2c99b7c477d06591a856a4ea3e1e214719eee8

SHA256
db4137e258a0f6159fda559a5f6dd2704be0582c3f0586f65040c7ad1eb68451

SHA512
d1a994610a045d89d5d306866c24ae56bf16555414b8f63f632552568e67b5586f26d5a17a1f0a55ada376730298e6d856e9161828d4eae9decfa4e015e0e90a

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
f685e9b0f43c1189696bf0640d15b56c

SHA1
689589b14fd631686f6316ea33fac80eb59a7e45

SHA256
f39d33224a92a60962c7dfac653f2522e828eacfd77baf4d1ec4ccc895704777

SHA512
8067c05f00da665ef73b1f9e3ec2f27b628e7f7d39bf882d8295e95729e03742e880f37e78f0a105306a91f14dbe30c0977d0157b0389404d3886fea0fcdd3c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\setup_ovl11.exe

Filesize
362.4MB

MD5
86953017061f31e70b969e6c7f572c7f

SHA1
3bebe208120c374bc63b80b76d47caefabdca19a

SHA256
9412c0bf2b0d8f61bf6e8df011bd32f3a5be8a6d96bc0b0e4eee1bb3a43fe9da

SHA512
5a5afd57382e44034832f66d92b0d180d8e525ec4f22c54be4bf391604370814c622b4210e5f8f8c3c595dc63753d0dffc180ec1697a663a15598dae5491fa7c

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\setup_ovl11.exe

Filesize
362.4MB

MD5
86953017061f31e70b969e6c7f572c7f

SHA1
3bebe208120c374bc63b80b76d47caefabdca19a

SHA256
9412c0bf2b0d8f61bf6e8df011bd32f3a5be8a6d96bc0b0e4eee1bb3a43fe9da

SHA512
5a5afd57382e44034832f66d92b0d180d8e525ec4f22c54be4bf391604370814c622b4210e5f8f8c3c595dc63753d0dffc180ec1697a663a15598dae5491fa7c

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\setup_ovl11.exe

Filesize
362.4MB

MD5
86953017061f31e70b969e6c7f572c7f

SHA1
3bebe208120c374bc63b80b76d47caefabdca19a

SHA256
9412c0bf2b0d8f61bf6e8df011bd32f3a5be8a6d96bc0b0e4eee1bb3a43fe9da

SHA512
5a5afd57382e44034832f66d92b0d180d8e525ec4f22c54be4bf391604370814c622b4210e5f8f8c3c595dc63753d0dffc180ec1697a663a15598dae5491fa7c

Download Submit
memory/1284-135-0x0000000000540000-0x0000000000548000-memory.dmp

Filesize
32KB

Download
memory/1284-136-0x00000000067F0000-0x0000000006812000-memory.dmp

Filesize
136KB

Download
memory/3448-162-0x0000000005F20000-0x0000000005FB2000-memory.dmp

Filesize
584KB

Download
memory/3448-155-0x0000000005060000-0x000000000509C000-memory.dmp

Filesize
240KB

Download
memory/3448-153-0x00000000050D0000-0x00000000051DA000-memory.dmp

Filesize
1.0MB

Download
memory/3448-154-0x0000000005000000-0x0000000005012000-memory.dmp

Filesize
72KB

Download
memory/3448-164-0x0000000006570000-0x0000000006B14000-memory.dmp

Filesize
5.6MB

Download
memory/3448-149-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3448-167-0x0000000006280000-0x0000000006442000-memory.dmp

Filesize
1.8MB

Download
memory/3448-168-0x0000000007050000-0x000000000757C000-memory.dmp

Filesize
5.2MB

Download
memory/3448-152-0x0000000005550000-0x0000000005B68000-memory.dmp

Filesize
6.1MB

Download
memory/3852-141-0x0000000005780000-0x00000000057E6000-memory.dmp

Filesize
408KB

Download
memory/3852-142-0x0000000005C40000-0x0000000005C5E000-memory.dmp

Filesize
120KB

Download
memory/3852-144-0x00000000061D0000-0x00000000061EA000-memory.dmp

Filesize
104KB

Download
memory/3852-143-0x0000000007340000-0x00000000079BA000-memory.dmp

Filesize
6.5MB

Download
memory/3852-138-0x0000000002680000-0x00000000026B6000-memory.dmp

Filesize
216KB

Download
memory/3852-139-0x0000000004F70000-0x0000000005598000-memory.dmp

Filesize
6.2MB

Download
memory/3852-140-0x0000000005710000-0x0000000005776000-memory.dmp

Filesize
408KB

Download
memory/4504-158-0x000000006DAC0000-0x000000006DB0C000-memory.dmp

Filesize
304KB

Download
memory/4504-161-0x0000000007770000-0x0000000007806000-memory.dmp

Filesize
600KB

Download
memory/4504-163-0x0000000007490000-0x000000000749E000-memory.dmp

Filesize
56KB

Download
memory/4504-160-0x0000000007530000-0x000000000753A000-memory.dmp

Filesize
40KB

Download
memory/4504-165-0x00000000076D0000-0x00000000076EA000-memory.dmp

Filesize
104KB

Download
memory/4504-166-0x00000000076B0000-0x00000000076B8000-memory.dmp

Filesize
32KB

Download
memory/4504-159-0x0000000006740000-0x000000000675E000-memory.dmp

Filesize
120KB

Download
memory/4504-157-0x0000000007170000-0x00000000071A2000-memory.dmp

Filesize
200KB

Download