gcleaner | 6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98

General

Target

6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe
Size

311KB
MD5

b0d985f94baf83124702f65dd32c9a32
SHA1

a0bdf12cca957ba14a96ef7b59a033ee14f98f89
SHA256

6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98
SHA512

0ccf5d5e2070c79396e31e991097119b2ef46e2af43e41c407b87388b3e19a4dc4fdc974953c864e654fee17e68ec30e35f36a73711eb6748b611417b2866558
SSDEEP

6144:KIopxVqUt3EgyNXLhcQORKft7RnXdProV0:KICVqUegyNbCU7RnXdPro

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

45.91.200.135

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2172 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe

pid process

1876 6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2172	cmd.exe

pid	process
1876	6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe

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

Processes:

6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.execmd.exetaskkill.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1452 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1452 taskkill.exe

pid	process
1452	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1452	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.execmd.exe

description	pid	process	target process
PID 1876 wrote to memory of 2172	1876	6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe	cmd.exe
PID 1876 wrote to memory of 2172	1876	6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe	cmd.exe
PID 1876 wrote to memory of 2172	1876	6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe	cmd.exe
PID 1876 wrote to memory of 2172	1876	6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe	cmd.exe
PID 2172 wrote to memory of 1452	2172	cmd.exe	taskkill.exe
PID 2172 wrote to memory of 1452	2172	cmd.exe	taskkill.exe
PID 2172 wrote to memory of 1452	2172	cmd.exe	taskkill.exe
PID 2172 wrote to memory of 1452	2172	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe
"C:\Users\Admin\AppData\Local\Temp\6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1876

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe" & exit
2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "6c10c6befa2ed075af8e443d10715aadfb5c01e9161317584a5429a69bcd4e98.exe" /f
3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1452

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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\7CNUR30T\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
\Users\Admin\AppData\Local\Temp\YE2ULF4xCQeAatPAH2PAqPFM5yR\Y-Cleaner.exe

Filesize
1.4MB

MD5
a8cf5621811f7fac55cfe8cb3fa6b9f6

SHA1
121356839e8138a03141f5f5856936a85bd2a474

SHA256
614a0362ab87cee48d0935b5bb957d539be1d94c6fdeb3fe42fac4fbe182c10c

SHA512
4479d951435f222ca7306774002f030972c9f1715d6aaf512fca9420dd79cb6d08240f80129f213851773290254be34f0ff63c7b1f4d554a7db5f84b69e84bdd

Download Submit
memory/1876-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1876-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1876-13-0x0000000002C00000-0x0000000002D00000-memory.dmp

Filesize
1024KB

Download
memory/1876-15-0x0000000000240000-0x000000000027B000-memory.dmp

Filesize
236KB

Download
memory/1876-2-0x0000000000240000-0x000000000027B000-memory.dmp

Filesize
236KB

Download
memory/1876-18-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1876-17-0x0000000000400000-0x000000000279E000-memory.dmp

Filesize
35.6MB

Download
memory/1876-1-0x0000000002C00000-0x0000000002D00000-memory.dmp

Filesize
1024KB

Download
memory/1876-37-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1876-36-0x0000000002C00000-0x0000000002D00000-memory.dmp

Filesize
1024KB

Download
memory/1876-35-0x0000000000400000-0x000000000279E000-memory.dmp

Filesize
35.6MB

Download

Analysis

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