gcleaner | 5c62e8a6c5136c4a245b99a55be41debd4de7b4639a38d9b771504698a3f76f5

General

Target

c299ab6dba225dab89bb803033fe4a475a1c36a8cc0d26177342c5936dba4b1a.exe
Size

2.4MB
MD5

f04d59eaa535e1d128959c1ebcefbec5
SHA1

ac71ca1b1482764b23acd599076411decdfefac0
SHA256

c299ab6dba225dab89bb803033fe4a475a1c36a8cc0d26177342c5936dba4b1a
SHA512

289454b15098487ca0614c474244974297c2653d706b6885bae662389eaf9c83670d46be74d361589451d30e9f6a84b7e922946fa4d44656c0c1c2b1a188c2f8
SSDEEP

49152:Z2EZ/wsqGuYVr5ofuaIo9YBlS+10KiHqwOsjRz/cqxjD6TcY+vLmvMMfA5hq:M6/w5GRVra39YvDcfOqRbcqxjU3U/MoW

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

45.15.156.54

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
4156	is-G2GMU.tmp
3572	dwsearcher47.exe

Loads dropped DLL 1 IoCs

pid	Process
4156	is-G2GMU.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)\dwSearcher\is-AMGOM.tmp	is-G2GMU.tmp
File created	C:\Program Files (x86)\dwSearcher\is-OOP75.tmp	is-G2GMU.tmp
File created	C:\Program Files (x86)\dwSearcher\is-6E1OF.tmp	is-G2GMU.tmp
File opened for modification	C:\Program Files (x86)\dwSearcher\unins000.dat	is-G2GMU.tmp
File created	C:\Program Files (x86)\dwSearcher\unins000.dat	is-G2GMU.tmp
File created	C:\Program Files (x86)\dwSearcher\is-66UHI.tmp	is-G2GMU.tmp
File created	C:\Program Files (x86)\dwSearcher\is-7JP6L.tmp	is-G2GMU.tmp
File created	C:\Program Files (x86)\dwSearcher\is-JJBMO.tmp	is-G2GMU.tmp
File opened for modification	C:\Program Files (x86)\dwSearcher\dwsearcher47.exe	is-G2GMU.tmp
File created	C:\Program Files (x86)\dwSearcher\is-B2F8H.tmp	is-G2GMU.tmp
File created	C:\Program Files (x86)\dwSearcher\is-142LE.tmp	is-G2GMU.tmp
File created	C:\Program Files (x86)\dwSearcher\is-Q8L6L.tmp	is-G2GMU.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	c299ab6dba225dab89bb803033fe4a475a1c36a8cc0d26177342c5936dba4b1a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	is-G2GMU.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dwsearcher47.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3572	dwsearcher47.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 4156	1892	c299ab6dba225dab89bb803033fe4a475a1c36a8cc0d26177342c5936dba4b1a.exe	83
PID 1892 wrote to memory of 4156	1892	c299ab6dba225dab89bb803033fe4a475a1c36a8cc0d26177342c5936dba4b1a.exe	83
PID 1892 wrote to memory of 4156	1892	c299ab6dba225dab89bb803033fe4a475a1c36a8cc0d26177342c5936dba4b1a.exe	83
PID 4156 wrote to memory of 3572	4156	is-G2GMU.tmp	84
PID 4156 wrote to memory of 3572	4156	is-G2GMU.tmp	84
PID 4156 wrote to memory of 3572	4156	is-G2GMU.tmp	84

C:\Users\Admin\AppData\Local\Temp\c299ab6dba225dab89bb803033fe4a475a1c36a8cc0d26177342c5936dba4b1a.exe
"C:\Users\Admin\AppData\Local\Temp\c299ab6dba225dab89bb803033fe4a475a1c36a8cc0d26177342c5936dba4b1a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Users\Admin\AppData\Local\Temp\is-QEJ10.tmp\is-G2GMU.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-QEJ10.tmp\is-G2GMU.tmp" /SL4 $C0060 "C:\Users\Admin\AppData\Local\Temp\c299ab6dba225dab89bb803033fe4a475a1c36a8cc0d26177342c5936dba4b1a.exe" 2264869 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:4156
- - C:\Program Files (x86)\dwSearcher\dwsearcher47.exe
    "C:\Program Files (x86)\dwSearcher\dwsearcher47.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    PID:3572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\dwSearcher\dwsearcher47.exe

Filesize
4.0MB

MD5
a7f65272d96f74befe596d7eea0b6b5d

SHA1
422c05d1fe2a465fe6f47b80b2fedec20a37adf2

SHA256
2dc37c705f4bf7a0fb134a9eabea9f74f46ee2e8c459f615a210ad9f080d82b8

SHA512
93aecaf3973cdd4e7a26ef60bc9dd34a67e188934a549c3ef85fa2f0e706ef87603e3b1c7a0d1efc96097e0f3e5d90d765c62b1948bbb2a20d1d99d5f46843ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-5HVJQ.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-QEJ10.tmp\is-G2GMU.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
memory/1892-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1892-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1892-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3572-40-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/3572-41-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/3572-42-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/3572-44-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/4156-10-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4156-43-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download

Analysis

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