gcleaner | a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66

General

Target

a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe
Size

434KB
MD5

1a29a0877e8cf4f655f11082d0298dc9
SHA1

f83aa10e5dd0600228c7ecd3e787e1dc1e24a5f1
SHA256

a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66
SHA512

3033bb7391371acc0f54a7b7dc72954f1a5caea4d55ed3a5f04807c8cca2193301f9581bf39c846afa1b81106025dcdbc84df67c37f2868bd4cd2669cfa582c7
SSDEEP

12288:GeSy7hLlys4W40FVHGZyrqXNqvgWw1Y90fuzOj:GkpMs4WnFQgNwC90G6j

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

C2

gcl-gb.biz

45.9.20.13

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Gcleaner family
gcleaner
OnlyLogger
A tiny loader that uses IPLogger to get its payload.
loader onlylogger
Onlylogger family
onlylogger

OnlyLogger payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1048-2-0x0000000000220000-0x0000000000269000-memory.dmp	family_onlylogger
behavioral1/memory/1048-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral1/memory/1048-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral1/memory/1048-5-0x0000000000220000-0x0000000000269000-memory.dmp	family_onlylogger
behavioral1/memory/1048-4-0x0000000000400000-0x000000000089C000-memory.dmp	family_onlylogger

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2028 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2028	cmd.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:

cmd.exetaskkill.exea75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

2940 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2940 taskkill.exe

pid	process
2940	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	2940	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.execmd.exe

description	pid	process	target process
PID 1048 wrote to memory of 2028	1048	a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe	cmd.exe
PID 1048 wrote to memory of 2028	1048	a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe	cmd.exe
PID 1048 wrote to memory of 2028	1048	a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe	cmd.exe
PID 1048 wrote to memory of 2028	1048	a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe	cmd.exe
PID 2028 wrote to memory of 2940	2028	cmd.exe	taskkill.exe
PID 2028 wrote to memory of 2940	2028	cmd.exe	taskkill.exe
PID 2028 wrote to memory of 2940	2028	cmd.exe	taskkill.exe
PID 2028 wrote to memory of 2940	2028	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe
"C:\Users\Admin\AppData\Local\Temp\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2028
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "a75e90dafe1c1654c511fa5d01f5092a1bb3880b7b210689a910035425918f66.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2940

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

memory/1048-1-0x0000000000980000-0x0000000000A80000-memory.dmp

Filesize
1024KB

Download
memory/1048-2-0x0000000000220000-0x0000000000269000-memory.dmp

Filesize
292KB

Download
memory/1048-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1048-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1048-5-0x0000000000220000-0x0000000000269000-memory.dmp

Filesize
292KB

Download
memory/1048-4-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads