gcleaner | b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca

General

Target

b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.exe
Size

1.9MB
MD5

19d00d901034e6f159fd92037d4642e6
SHA1

1bd2dca7c6bcfa72933f2d156b08206eecf0e74d
SHA256

b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca
SHA512

a527fa038f981e826b1469c403c7f1dad1b4116f60e2a66174de4647d083c586530e4b989aef72d58928bc24403e0fcce2040e3b932cddf634628b3d6f0a498f
SSDEEP

49152:Tkq+xKsAz4UsIEZcMAk+Ayl/kXtGvxu6LdrXiXd9ZR6/uFVIcGx:gHKsAzWVcMT+96dGZu6J7ibfFo

Score

10^/10

gcleaner defense_evasion discovery 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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
12	3592	b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.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\VideoBiosVersion	b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.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.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Wine	b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3592	b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.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
4424	3592	WerFault.exe	82

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	b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3592	b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.exe
3592	b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.exe

C:\Users\Admin\AppData\Local\Temp\b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.exe
"C:\Users\Admin\AppData\Local\Temp\b9a0851bbb3ed476b114ea6f18fa7de092e0a4e3c8b594e07799c32e56157fca.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Downloads MZ/PE file
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:3592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3592 -s 1388
  2⤵
  - Program crash
  PID:4424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3592 -ip 3592
1⤵
PID:4620

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\8R55UT9S\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3592-4-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-18-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-3-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-0-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-6-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-7-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3592-15-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/3592-20-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-17-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/3592-1-0x00000000772B4000-0x00000000772B6000-memory.dmp

Filesize
8KB

Download
memory/3592-22-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-26-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-31-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-39-0x0000000000400000-0x0000000000C7D000-memory.dmp

Filesize
8.5MB

Download
memory/3592-40-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads