gcleaner | 2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b

General

Target

2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe
Size

1.8MB
MD5

7dabe678ef36a7aab5f3e16c809fe764
SHA1

3f4b34332b1ac54c6c489d6ed7d1db7e20eb2643
SHA256

2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b
SHA512

fddfeee5c028579c075d74859261ca499d63d3fe451b0070616592d3dfc66ab9dbafc6a6dbd16657a4db54d015ee93719e71485d15fed3c961ca3fb0c961b1d9
SSDEEP

24576:is1LmI+Z5dLGDnFJZmY1OR3FS9a1bxrjt2Rlw5/s4o6CFVi5Dq/V2wlrh1FyZ8Mb:Z1LmIy5dLGDnfZpOJF3nFnmz9VA9+R

Score

10^/10

gcleaner discovery evasion loader

Malware Config

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Gcleaner family
gcleaner

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__	2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe

Downloads MZ/PE file

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	2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3800	2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1900	3800	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3800	2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe
3800	2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe

C:\Users\Admin\AppData\Local\Temp\2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe
"C:\Users\Admin\AppData\Local\Temp\2cf6e29d67e88cddf4c22bb93e9c7d3a0ed6c50a2e1999755a3ff111c48f118b.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:3800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3800 -s 636
  2⤵
  - Program crash
  PID:1900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3800 -ip 3800
1⤵
PID:4364

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\PGH3GSHW\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3800-4-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-6-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-17-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/3800-0-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-18-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-7-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3800-20-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-3-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/3800-15-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-1-0x0000000076FE4000-0x0000000076FE6000-memory.dmp

Filesize
8KB

Download
memory/3800-22-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-27-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-33-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-39-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3800-40-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads