gcleaner | 894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b

General

Target

894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b.exe
Size

411KB
MD5

a1ea1ffe372eb3abb1d20740719cf37a
SHA1

32dccd07bbc77576cda357826fa36a74cd61667c
SHA256

894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b
SHA512

11bb26017fed54bf06a41f9928ad3a40000ba65d69563a669f8231169b76a17c477af9d1085f4b76e34bf182a4f8808ecef3739735feba55167f267f666c9f63
SSDEEP

6144:0HH0YZLefozbE+9IquXOlBQH4Oh+zmeZq6:0ntZLeAfB9IjeOh+z

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

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
1044	4220	WerFault.exe	80
1564	4220	WerFault.exe	80
3864	4220	WerFault.exe	80
3472	4220	WerFault.exe	80
2408	4220	WerFault.exe	80
228	4220	WerFault.exe	80
2472	4220	WerFault.exe	80
3920	4220	WerFault.exe	80
4820	4220	WerFault.exe	80
848	4220	WerFault.exe	80

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	894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b.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

pid	Process
5024	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5024	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4220 wrote to memory of 3780	4220	894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b.exe	101
PID 4220 wrote to memory of 3780	4220	894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b.exe	101
PID 4220 wrote to memory of 3780	4220	894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b.exe	101
PID 3780 wrote to memory of 5024	3780	cmd.exe	106
PID 3780 wrote to memory of 5024	3780	cmd.exe	106
PID 3780 wrote to memory of 5024	3780	cmd.exe	106

C:\Users\Admin\AppData\Local\Temp\894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b.exe
"C:\Users\Admin\AppData\Local\Temp\894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 484
  2⤵
  - Program crash
  PID:1044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 796
  2⤵
  - Program crash
  PID:1564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 836
  2⤵
  - Program crash
  PID:3864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 856
  2⤵
  - Program crash
  PID:3472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 824
  2⤵
  - Program crash
  PID:2408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 960
  2⤵
  - Program crash
  PID:228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 1084
  2⤵
  - Program crash
  PID:2472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 1240
  2⤵
  - Program crash
  PID:3920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 1764
  2⤵
  - Program crash
  PID:4820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3780
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "894ba799502ca5eac58d1e82ed1c8fac99a391f1bf676beaacff5e1bbde1417b.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 1828
  2⤵
  - Program crash
  PID:848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4220 -ip 4220
1⤵
PID:932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4220 -ip 4220
1⤵
PID:2060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4220 -ip 4220
1⤵
PID:2608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4220 -ip 4220
1⤵
PID:4104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4220 -ip 4220
1⤵
PID:240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4220 -ip 4220
1⤵
PID:3816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4220 -ip 4220
1⤵
PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4220 -ip 4220
1⤵
PID:4976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4220 -ip 4220
1⤵
PID:1708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4220 -ip 4220
1⤵
PID:3344

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\ZQ9FC15F\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4220-1-0x0000000000780000-0x0000000000880000-memory.dmp

Filesize
1024KB

Download
memory/4220-2-0x0000000002440000-0x000000000247C000-memory.dmp

Filesize
240KB

Download
memory/4220-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4220-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4220-13-0x0000000000780000-0x0000000000880000-memory.dmp

Filesize
1024KB

Download
memory/4220-15-0x0000000002440000-0x000000000247C000-memory.dmp

Filesize
240KB

Download
memory/4220-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4220-16-0x0000000000400000-0x00000000005F9000-memory.dmp

Filesize
2.0MB

Download
memory/4220-34-0x0000000000400000-0x00000000005F9000-memory.dmp

Filesize
2.0MB

Download
memory/4220-35-0x0000000000400000-0x00000000005F9000-memory.dmp

Filesize
2.0MB

Download
memory/4220-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

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