gcleaner | 7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f

General

Target

7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.exe
Size

1.9MB
MD5

2725f2b0ffa89f08642d36caf06c3ce4
SHA1

bf882f33c5df5c498252e4cb149ffa11bda9b623
SHA256

7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f
SHA512

4bf1c33808847d251b811262ff5ac3e30958794ff6a7916e96f1af884a605c078ef62001181bfacdfc80907575bd73d42ee9be4e78c01d2e3fa9f9b8bee2942f
SSDEEP

49152:KM0P7ca9GJZWlS/mS3J1NFOtMcGduNc0dwknye5GxFi30:VLMIT/FrjFsTHP5Gbi3

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__	7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.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\VideoBiosVersion	7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.exe

Loads dropped DLL 1 IoCs

pid	Process
2592	7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2592	7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.exe

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

System Information Discovery
T1082

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	7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2592	7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.exe

C:\Users\Admin\AppData\Local\Temp\7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.exe
"C:\Users\Admin\AppData\Local\Temp\7be3016ad7251eda873c02c362243710b73620c595a9ca34bd0a7c0f2055b11f_Sigmanly.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2592

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\Temporary Internet Files\Content.IE5\DUME8XYE\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
\Users\Admin\AppData\Local\Temp\Z6effw3wwA4JfvD5134uE5DeG\Y-Cleaner.exe

Filesize
1.4MB

MD5
a8cf5621811f7fac55cfe8cb3fa6b9f6

SHA1
121356839e8138a03141f5f5856936a85bd2a474

SHA256
614a0362ab87cee48d0935b5bb957d539be1d94c6fdeb3fe42fac4fbe182c10c

SHA512
4479d951435f222ca7306774002f030972c9f1715d6aaf512fca9420dd79cb6d08240f80129f213851773290254be34f0ff63c7b1f4d554a7db5f84b69e84bdd

Download Submit
memory/2592-17-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-19-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-4-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-6-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-7-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2592-15-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-18-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/2592-0-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-3-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/2592-22-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-23-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-25-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-27-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-33-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/2592-1-0x00000000774E0000-0x00000000774E2000-memory.dmp

Filesize
8KB

Download
memory/2592-43-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads