gcleaner | 52bbd535778eb202e1f29642cea31586e90063e2c3f9480ee0eece6c3021867d

General

Target

a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe
Size

371KB
MD5

8a531ac1850e79081759de09b70251db
SHA1

1cc10eb949d449c7152ca0e3409d94b8d61db5d4
SHA256

a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267
SHA512

ecbc061a19c0c839f49ae790de0b38b34b582b34ce16095bf2ee3287745edc5823dbfc29fb84229bdc81c7b5c157c7f2eb80b01a236b8ac3e38d8e8493995efc
SSDEEP

6144:qFbhWI22curenuAAH84PPt2cW5Gz4KvNGbtqSvTH:q/2orjbPPtr/YHH

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

C2

185.172.128.90

5.42.64.56

185.172.128.69

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

2948 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe

pid process

2104 a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

2964 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2964 taskkill.exe

pid	process
2948	cmd.exe

pid	process
2104	a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe

pid	process
2964	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	2964	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.execmd.exe

description	pid	process	target process
PID 2104 wrote to memory of 2948	2104	a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe	cmd.exe
PID 2104 wrote to memory of 2948	2104	a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe	cmd.exe
PID 2104 wrote to memory of 2948	2104	a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe	cmd.exe
PID 2104 wrote to memory of 2948	2104	a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe	cmd.exe
PID 2948 wrote to memory of 2964	2948	cmd.exe	taskkill.exe
PID 2948 wrote to memory of 2964	2948	cmd.exe	taskkill.exe
PID 2948 wrote to memory of 2964	2948	cmd.exe	taskkill.exe
PID 2948 wrote to memory of 2964	2948	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe
"C:\Users\Admin\AppData\Local\Temp\a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2948
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "a0527f548f6ed392f4d578d32ce5d75677492875b13a60a068e55f8ad6105267.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2964

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\OORQXHVT\advdlc[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
\Users\Admin\AppData\Local\Temp\iPon3B5HadyNYLk5fvx\Y-Cleaner.exe

Filesize
1.2MB

MD5
0151e006443174af2f2ea167eb3317fe

SHA1
4867584b2bb6a5d5b9082a5a1b5d2d571eed7ce2

SHA256
af722c86835a47bbb5913361b0cedd00288aa23edd04709460902e4cc04be497

SHA512
f8ab571eece442e2c50574420165cb5beeeced3d8561b645c7f771fd28d499fb77bede7c49be1777ee6edf57f86efb6f43614415aa69837cfc1620cca9211d7b

Download Submit
memory/2104-4-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2104-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/2104-9-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2104-2-0x0000000000230000-0x000000000026C000-memory.dmp

Filesize
240KB

Download
memory/2104-17-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2104-21-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/2104-25-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2104-3-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2104-35-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2104-36-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2104-37-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download

Analysis

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