gcleaner | 3a2e31f2844df5cb91eedbf24c0b93de4b0aa08525f733132c2bce0d7ab81acc

Resubmissions

10-11-2024 21:28

241110-1bhk6avgrr 10

Analysis

max time kernel
149s
max time network
181s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
submitted
10-11-2024 21:28

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General

Target

054c0c0eb0f5db96a0f5c39dfc6c822377462a12aff74bc86150d450aa880e5c.exe

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

45.139.105.171

85.31.46.167

107.182.129.235

171.22.30.106

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
3056	is-C0O38.tmp
1932	etsearcher58.exe

Loads dropped DLL 1 IoCs

pid	Process
3056	is-C0O38.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\etSearcher\unins000.dat	is-C0O38.tmp
File created	C:\Program Files (x86)\etSearcher\is-255TS.tmp	is-C0O38.tmp
File created	C:\Program Files (x86)\etSearcher\is-EVO0K.tmp	is-C0O38.tmp
File created	C:\Program Files (x86)\etSearcher\is-77P5S.tmp	is-C0O38.tmp
File created	C:\Program Files (x86)\etSearcher\is-GJAF8.tmp	is-C0O38.tmp
File opened for modification	C:\Program Files (x86)\etSearcher\unins000.dat	is-C0O38.tmp
File opened for modification	C:\Program Files (x86)\etSearcher\etsearcher58.exe	is-C0O38.tmp
File created	C:\Program Files (x86)\etSearcher\is-O8K09.tmp	is-C0O38.tmp
File created	C:\Program Files (x86)\etSearcher\is-VD87J.tmp	is-C0O38.tmp
File created	C:\Program Files (x86)\etSearcher\is-0VE4K.tmp	is-C0O38.tmp
File created	C:\Program Files (x86)\etSearcher\is-95RP0.tmp	is-C0O38.tmp
File created	C:\Program Files (x86)\etSearcher\is-RAOF5.tmp	is-C0O38.tmp

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 3 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	is-C0O38.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	etsearcher58.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	054c0c0eb0f5db96a0f5c39dfc6c822377462a12aff74bc86150d450aa880e5c.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1932	etsearcher58.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4908 wrote to memory of 3056	4908	054c0c0eb0f5db96a0f5c39dfc6c822377462a12aff74bc86150d450aa880e5c.exe	88
PID 4908 wrote to memory of 3056	4908	054c0c0eb0f5db96a0f5c39dfc6c822377462a12aff74bc86150d450aa880e5c.exe	88
PID 4908 wrote to memory of 3056	4908	054c0c0eb0f5db96a0f5c39dfc6c822377462a12aff74bc86150d450aa880e5c.exe	88
PID 3056 wrote to memory of 1932	3056	is-C0O38.tmp	89
PID 3056 wrote to memory of 1932	3056	is-C0O38.tmp	89
PID 3056 wrote to memory of 1932	3056	is-C0O38.tmp	89

C:\Users\Admin\AppData\Local\Temp\054c0c0eb0f5db96a0f5c39dfc6c822377462a12aff74bc86150d450aa880e5c.exe
"C:\Users\Admin\AppData\Local\Temp\054c0c0eb0f5db96a0f5c39dfc6c822377462a12aff74bc86150d450aa880e5c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Users\Admin\AppData\Local\Temp\is-KKI8Q.tmp\is-C0O38.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-KKI8Q.tmp\is-C0O38.tmp" /SL4 $D0060 "C:\Users\Admin\AppData\Local\Temp\054c0c0eb0f5db96a0f5c39dfc6c822377462a12aff74bc86150d450aa880e5c.exe" 2312968 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3056
- - C:\Program Files (x86)\etSearcher\etsearcher58.exe
    "C:\Program Files (x86)\etSearcher\etsearcher58.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    PID:1932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\etSearcher\etsearcher58.exe

Filesize
3.9MB

MD5
b45a2950b30961a893b8475ee844cda0

SHA1
7cea093252ac72f13f574298d53642f711790daf

SHA256
3876ddc1426e78163fd3b4ce9fb1d6d4220bb8fd0f5b41b67da8cc44473ea504

SHA512
478827986abb9882e94f0fc2d56dad00beebff642f126a13a90b2bb224be6aad2cbc7555d7cd89bf3039afa626f69b7bad90675e9c23eaa77687cfd19c4734e3

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-KKI8Q.tmp\is-C0O38.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-VNURK.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/1932-41-0x0000000000400000-0x00000000015F3000-memory.dmp

Filesize
17.9MB

Download
memory/1932-40-0x0000000000400000-0x00000000015F3000-memory.dmp

Filesize
17.9MB

Download
memory/1932-42-0x0000000000400000-0x00000000015F3000-memory.dmp

Filesize
17.9MB

Download
memory/1932-44-0x0000000000400000-0x00000000015F3000-memory.dmp

Filesize
17.9MB

Download
memory/3056-16-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/3056-43-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4908-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4908-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4908-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download