gcleaner | 157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056

General

Target

157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe
Size

1.9MB
MD5

7faf086c54af2f40486165e735ad4490
SHA1

500022daa48cf6d34ad14dc851de2bb27317d009
SHA256

157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056
SHA512

12edeadb77efcd02d54a687441e9940037cd51214d501c64938333f15bfc58834028829b1bbe421198790069e56ce89f86069534b745019853e2069ecb73c88e
SSDEEP

49152:dGwFJ+KLcqz5AQAstVprJyp+9uiYovdyVJGb4qf:4wFJpnnzkhi3Jb4qf

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

62.197.136.41

91.241.19.194

62.197.136.196

Attributes

url_path
/i.php

/get.php

/setup.php

/setup.php

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
2792	is-L9UEN.tmp
2804	thumbsrem.exe

Loads dropped DLL 5 IoCs

pid	Process
2868	157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe
2792	is-L9UEN.tmp
2792	is-L9UEN.tmp
2792	is-L9UEN.tmp
2792	is-L9UEN.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 8 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Mby Remover\is-IR8SL.tmp	is-L9UEN.tmp
File created	C:\Program Files (x86)\Mby Remover\is-953U0.tmp	is-L9UEN.tmp
File created	C:\Program Files (x86)\Mby Remover\is-NG57U.tmp	is-L9UEN.tmp
File created	C:\Program Files (x86)\Mby Remover\is-AJM9U.tmp	is-L9UEN.tmp
File opened for modification	C:\Program Files (x86)\Mby Remover\unins000.dat	is-L9UEN.tmp
File opened for modification	C:\Program Files (x86)\Mby Remover\thumbsrem.exe	is-L9UEN.tmp
File created	C:\Program Files (x86)\Mby Remover\unins000.dat	is-L9UEN.tmp
File created	C:\Program Files (x86)\Mby Remover\is-5Q81L.tmp	is-L9UEN.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	157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	is-L9UEN.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	thumbsrem.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 2792	2868	157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe	30
PID 2868 wrote to memory of 2792	2868	157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe	30
PID 2868 wrote to memory of 2792	2868	157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe	30
PID 2868 wrote to memory of 2792	2868	157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe	30
PID 2868 wrote to memory of 2792	2868	157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe	30
PID 2868 wrote to memory of 2792	2868	157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe	30
PID 2868 wrote to memory of 2792	2868	157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe	30
PID 2792 wrote to memory of 2804	2792	is-L9UEN.tmp	31
PID 2792 wrote to memory of 2804	2792	is-L9UEN.tmp	31
PID 2792 wrote to memory of 2804	2792	is-L9UEN.tmp	31
PID 2792 wrote to memory of 2804	2792	is-L9UEN.tmp	31

C:\Users\Admin\AppData\Local\Temp\157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe
"C:\Users\Admin\AppData\Local\Temp\157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Local\Temp\is-EH6HJ.tmp\is-L9UEN.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-EH6HJ.tmp\is-L9UEN.tmp" /SL4 $40108 "C:\Users\Admin\AppData\Local\Temp\157231a3aa9626e8dbf5c8a4d29d7658f213116b4e68d00d331eb7415e306056N.exe" 1595739 135680
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Program Files (x86)\Mby Remover\thumbsrem.exe
    "C:\Program Files (x86)\Mby Remover\thumbsrem.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2804

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

\Program Files (x86)\Mby Remover\thumbsrem.exe

Filesize
2.2MB

MD5
9960c5c2571c1bcc7464fd66d93dc459

SHA1
e6da5e446833e3ec9a23b79531be67b05c3be1a3

SHA256
d4f072d31af6f19a5325931b8a591504e820dd67b906b539de206aa7ea3dda9a

SHA512
024200911d409ae7035680acbcddfcf030a68e8f75f281ac161cc09bf14238196c063c4e829455afe9876c731e19579549d575ea9551dd126027adc9383982e1

Download Submit
\Users\Admin\AppData\Local\Temp\is-9QVGG.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-9QVGG.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-EH6HJ.tmp\is-L9UEN.tmp

Filesize
739KB

MD5
668f0563f57ee5bf3addf3e666f156b4

SHA1
5234ea9e02be07139cd5b2a2387d13c05ccc6142

SHA256
299aa1f585242c903086430be67c44705617882ce0968b2e8d6c82680af92e7b

SHA512
7978e2015503b2a427d6702ddd1f99c26f9a44dee1313440afa0910d052fa71c02d2f280a033b4ef47d5b2e47b2b73c02388e7be44403d3c13661e97f03b20f6

Download Submit
memory/2792-40-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/2792-51-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/2792-12-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/2792-36-0x0000000003920000-0x000000000495B000-memory.dmp

Filesize
16.2MB

Download
memory/2792-41-0x0000000003920000-0x000000000495B000-memory.dmp

Filesize
16.2MB

Download
memory/2804-37-0x0000000000400000-0x000000000143B000-memory.dmp

Filesize
16.2MB

Download
memory/2804-42-0x0000000000400000-0x000000000143B000-memory.dmp

Filesize
16.2MB

Download
memory/2804-47-0x0000000000400000-0x000000000143B000-memory.dmp

Filesize
16.2MB

Download
memory/2804-49-0x0000000000400000-0x000000000143B000-memory.dmp

Filesize
16.2MB

Download
memory/2868-38-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2868-2-0x0000000000401000-0x000000000040A000-memory.dmp

Filesize
36KB

Download
memory/2868-52-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2868-0-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download

Analysis

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