gcleaner | e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d

General

Target

e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe
Size

299KB
MD5

1cdbb7b73ae1a55aadd194d340690d3a
SHA1

bd04d3bd46cbe6fa259b0f55a279b534a402170e
SHA256

e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d
SHA512

702950ad1471dd44d7695e2e273121e7d9043d0a45a33914af1108eb703fdb5c2d484bacb644144f5f44d9266dfe082c33e2f42dd03bfbdd2cb5538052db6318
SSDEEP

6144:sfHn+TbryG/0oVtTpU7dQ02+JC4Bzf9yXcb:4Hn+TPyG3Ki0/C4a

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2072	3892	WerFault.exe	82

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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2948	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2948	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3892 wrote to memory of 1112	3892	e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe	95
PID 3892 wrote to memory of 1112	3892	e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe	95
PID 3892 wrote to memory of 1112	3892	e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe	95
PID 1112 wrote to memory of 2948	1112	cmd.exe	99
PID 1112 wrote to memory of 2948	1112	cmd.exe	99
PID 1112 wrote to memory of 2948	1112	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe
"C:\Users\Admin\AppData\Local\Temp\e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3892
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1112
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "e8420995c724cb799a7fde56eece43118fca98fbaf816403f35ee96d471f727d.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3892 -s 1600
  2⤵
  - Program crash
  PID:2072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3892 -ip 3892
1⤵
PID:4024

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

2

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

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\BOIFDBOU\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3892-1-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/3892-2-0x00000000021B0000-0x00000000021EB000-memory.dmp

Filesize
236KB

Download
memory/3892-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3892-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3892-13-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/3892-15-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/3892-16-0x00000000021B0000-0x00000000021EB000-memory.dmp

Filesize
236KB

Download
memory/3892-18-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3892-27-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/3892-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3892-35-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

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