gcleaner | fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0

General

Target

fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.exe
Size

1.9MB
MD5

de697df8c4260de611b667f68688d4e8
SHA1

f2a91a330dabf11c9a86cb80727a592fc0760029
SHA256

fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0
SHA512

7cf458459189fcacebfc842b382b00bb75c21e34409c756c751ca49f83097a0e515cb3b1c7d9deede827d8f2e72c258ea5794a5c9e4a355ee6946ce3299f3ade
SSDEEP

49152:3nhsyNtbn/2bzPTxxJXnPrINPsKsqyjhstXJMCk:3nSynbn/2bzrxxx05M5

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__	fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
14	4616	fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.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	fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.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-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4616	fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.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
3024	4616	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	fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4616	fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.exe
4616	fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.exe

C:\Users\Admin\AppData\Local\Temp\fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.exe
"C:\Users\Admin\AppData\Local\Temp\fb7a83638f40932771204fbb3ef6f863f7ce6fce8979d3ebc6d5b0cb5b3c29c0.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:4616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1552
  2⤵
  - Program crash
  PID:3024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 4616 -ip 4616
1⤵
PID:1548

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\9MFSIIMR\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4616-15-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-18-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4616-4-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-6-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-7-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-3-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4616-17-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4616-0-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-20-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-21-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-1-0x0000000077754000-0x0000000077756000-memory.dmp

Filesize
8KB

Download
memory/4616-27-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-38-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4616-40-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads