purecrypter | 1db6a3913e7a0d08dde8cad8c1af9db94334b96020fc0ec035d9c77fa61e875e

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
08-01-2025 16:55

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General

Target

BOUNTY_FREE.exe
Size

4.3MB
MD5

8ac2d675aca9c0d6837fdaf06da9d441
SHA1

2843ab6f217fdd652ea3ca5869df94cc17a8bfd0
SHA256

1db6a3913e7a0d08dde8cad8c1af9db94334b96020fc0ec035d9c77fa61e875e
SHA512

7b2247aa0dee3c51f165f5bffd11c00551921323c6ff09bc46b54ff3e7957c2c54c6517c914bdde4e3b8a7dbeb68d05abbd4a8400955fc0af0cdae53c9b69562
SSDEEP

98304:aqBdvTCa5zayzLu36rQAHGtx+zmBM1vXqtViWaz2eXjb/z2:tTJDaqrQAmtx+mu1vXqtViWDWa

Score

10^/10

purecrypter downloader evasion loader persistence themida trojan

Malware Config

Extracted

Family

purecrypter

https://cdn.discordapp.com/attachments/1014517792986378343/1022788605682397214/moddedvgc_Dxtgnmlu.bmp

Signatures

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

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	BOUNTY_FREE.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\frAQBc8Wsa1xVPfv\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\frAQBc8Wsa1xVPfv"	BOUNTY_FREE.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	BOUNTY_FREE.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	BOUNTY_FREE.exe

Executes dropped EXE 1 IoCs

pid	Process
3068	vanguardemulate.exe

Loads dropped DLL 1 IoCs

pid	Process
2840	cmd.exe

Themida packer 11 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2932-0-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida
behavioral1/memory/2932-4-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida
behavioral1/memory/2932-7-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida
behavioral1/memory/2932-8-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida
behavioral1/memory/2932-6-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida
behavioral1/memory/2932-5-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida
behavioral1/memory/2932-3-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida
behavioral1/memory/2932-2-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida
behavioral1/memory/2932-19-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida
behavioral1/memory/2932-20-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida
behavioral1/memory/2932-33-0x000000013F9E0000-0x0000000140556000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	BOUNTY_FREE.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2932	BOUNTY_FREE.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\Custom\vanguardemulate.exe	BOUNTY_FREE.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe
2932	BOUNTY_FREE.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2932	BOUNTY_FREE.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeLoadDriverPrivilege	2932	BOUNTY_FREE.exe
Token: SeDebugPrivilege	3068	vanguardemulate.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 2844	2932	BOUNTY_FREE.exe	31
PID 2932 wrote to memory of 2844	2932	BOUNTY_FREE.exe	31
PID 2932 wrote to memory of 2844	2932	BOUNTY_FREE.exe	31
PID 2932 wrote to memory of 2888	2932	BOUNTY_FREE.exe	32
PID 2932 wrote to memory of 2888	2932	BOUNTY_FREE.exe	32
PID 2932 wrote to memory of 2888	2932	BOUNTY_FREE.exe	32
PID 2932 wrote to memory of 2840	2932	BOUNTY_FREE.exe	33
PID 2932 wrote to memory of 2840	2932	BOUNTY_FREE.exe	33
PID 2932 wrote to memory of 2840	2932	BOUNTY_FREE.exe	33
PID 2840 wrote to memory of 3068	2840	cmd.exe	34
PID 2840 wrote to memory of 3068	2840	cmd.exe	34
PID 2840 wrote to memory of 3068	2840	cmd.exe	34
PID 2932 wrote to memory of 2268	2932	BOUNTY_FREE.exe	35
PID 2932 wrote to memory of 2268	2932	BOUNTY_FREE.exe	35
PID 2932 wrote to memory of 2268	2932	BOUNTY_FREE.exe	35
PID 2932 wrote to memory of 2860	2932	BOUNTY_FREE.exe	36
PID 2932 wrote to memory of 2860	2932	BOUNTY_FREE.exe	36
PID 2932 wrote to memory of 2860	2932	BOUNTY_FREE.exe	36
PID 2932 wrote to memory of 2900	2932	BOUNTY_FREE.exe	37
PID 2932 wrote to memory of 2900	2932	BOUNTY_FREE.exe	37
PID 2932 wrote to memory of 2900	2932	BOUNTY_FREE.exe	37

C:\Users\Admin\AppData\Local\Temp\BOUNTY_FREE.exe
"C:\Users\Admin\AppData\Local\Temp\BOUNTY_FREE.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Sets service image path in registry
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c color c
  2⤵
  PID:2844
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:2888
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c start C:\Windows\apppatch\Custom\vanguardemulate.exe
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2840
- - C:\Windows\apppatch\Custom\vanguardemulate.exe
    C:\Windows\apppatch\Custom\vanguardemulate.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3068
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:2268
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:2860
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:2900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\AppPatch\Custom\vanguardemulate.exe

Filesize
131KB

MD5
050a7af7e10f1be4ea4a9368593b88b5

SHA1
0774104a103df350bfd22ec5beac033fa4d00f50

SHA256
ed44b6f905f3764e43881c26610396ee029e3129ca9f8ee882937ba4286a7851

SHA512
5153543a0ecb1f18e6959a76c5dc22c4f85249c4142488a206f4f56afd6b4848588a79aee2b85a7911768bd1b322de7996e1f93283eacfe8ae4e493ae25881a0

Download Submit
memory/2932-2-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/2932-7-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/2932-1-0x0000000077710000-0x0000000077712000-memory.dmp

Filesize
8KB

Download
memory/2932-10-0x00000000024D0000-0x0000000002AB8000-memory.dmp

Filesize
5.9MB

Download
memory/2932-6-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/2932-5-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/2932-3-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/2932-0-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/2932-33-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/2932-4-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/2932-8-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/2932-20-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/2932-19-0x000000013F9E0000-0x0000000140556000-memory.dmp

Filesize
11.5MB

Download
memory/3068-18-0x00000000776C0000-0x0000000077869000-memory.dmp

Filesize
1.7MB

Download
memory/3068-17-0x000000013FB80000-0x000000013FB8C000-memory.dmp

Filesize
48KB

Download
memory/3068-21-0x00000000776C0000-0x0000000077869000-memory.dmp

Filesize
1.7MB

Download
memory/3068-22-0x00000000776C0000-0x0000000077869000-memory.dmp

Filesize
1.7MB

Download
memory/3068-16-0x00000000776C0000-0x0000000077869000-memory.dmp

Filesize
1.7MB

Download