gcleaner | d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6

General

Target

d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe
Size

373KB
MD5

4474a474090ec056db5c10d7931daff8
SHA1

933851a870ea5c0186e068e0d533a42a54d82c3c
SHA256

d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6
SHA512

04b74662a7038483bb0ecaf32c3e99948e9d88fbf413667fb6e313aeb0b3c1c97703bb0595cb04e8643f386cae893abb3d8e3e2b77d46f8eff12c5bf00f93fde
SSDEEP

6144:wK82Co6YLxL8DsZbfltDdGI6WNUbhJ6L4d+BlsUz7l97op1VtgMv:wH2Co6YtL8AZx7GcUb6Li+n77/o33g

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

Signatures

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

Processes:

cmd.exe

pid process

2656 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2656	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.exed57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.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	d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

2052 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2052 taskkill.exe

pid	process
2052	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	2052	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.execmd.exe

description	pid	process	target process
PID 2316 wrote to memory of 2656	2316	d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe	cmd.exe
PID 2316 wrote to memory of 2656	2316	d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe	cmd.exe
PID 2316 wrote to memory of 2656	2316	d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe	cmd.exe
PID 2316 wrote to memory of 2656	2316	d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe	cmd.exe
PID 2656 wrote to memory of 2052	2656	cmd.exe	taskkill.exe
PID 2656 wrote to memory of 2052	2656	cmd.exe	taskkill.exe
PID 2656 wrote to memory of 2052	2656	cmd.exe	taskkill.exe
PID 2656 wrote to memory of 2052	2656	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe
"C:\Users\Admin\AppData\Local\Temp\d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2656
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "d57482f94bce24f9c5c283559762923841979719824446f366b137916cf71dc6.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2052

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\7BCOPU31\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2316-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2316-3-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2316-2-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2316-8-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2316-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2316-11-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2316-20-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2316-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2316-22-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download

Analysis

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