gcleaner | ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8

General

Target

ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8.exe
Size

291KB
MD5

99d3b0638ef7537b87a91c03c8908cf3
SHA1

6bda2202947569e5c305ece4619b5df9a17aed7b
SHA256

ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8
SHA512

40fceb6c1da76bb446ad3991eb57c25c468daa817d908b53e2b3f6409dafcac8fc56683d00503cc8b58b4426bec6ac966ae6e813bfa7c53a152881d28d03557b
SSDEEP

6144:LRFdAZdPKTh1izTZh/Z2oifBAEPm77Mh0HDUDMW:LRFdAZdP8XifZhhnif7O7caDC

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
3152	3852	WerFault.exe	80
3344	3852	WerFault.exe	80
3732	3852	WerFault.exe	80
1992	3852	WerFault.exe	80
4988	3852	WerFault.exe	80
2720	3852	WerFault.exe	80
4352	3852	WerFault.exe	80
4748	3852	WerFault.exe	80
4924	3852	WerFault.exe	80
2004	3852	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	ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8.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
4216	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4216	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3852 wrote to memory of 2276	3852	ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8.exe	104
PID 3852 wrote to memory of 2276	3852	ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8.exe	104
PID 3852 wrote to memory of 2276	3852	ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8.exe	104
PID 2276 wrote to memory of 4216	2276	cmd.exe	106
PID 2276 wrote to memory of 4216	2276	cmd.exe	106
PID 2276 wrote to memory of 4216	2276	cmd.exe	106

C:\Users\Admin\AppData\Local\Temp\ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8.exe
"C:\Users\Admin\AppData\Local\Temp\ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 480
  2⤵
  - Program crash
  PID:3152
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 484
  2⤵
  - Program crash
  PID:3344
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 788
  2⤵
  - Program crash
  PID:3732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 824
  2⤵
  - Program crash
  PID:1992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 844
  2⤵
  - Program crash
  PID:4988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 816
  2⤵
  - Program crash
  PID:2720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 968
  2⤵
  - Program crash
  PID:4352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 1068
  2⤵
  - Program crash
  PID:4748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 1484
  2⤵
  - Program crash
  PID:4924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 1804
  2⤵
  - Program crash
  PID:2004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2276
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "ccabd0537a8045b84a81a75285d7d25a27503fabeed836d78bb26b3196e075a8.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3852 -ip 3852
1⤵
PID:3412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3852 -ip 3852
1⤵
PID:4580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 352 -p 3852 -ip 3852
1⤵
PID:3500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3852 -ip 3852
1⤵
PID:2568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 352 -p 3852 -ip 3852
1⤵
PID:380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3852 -ip 3852
1⤵
PID:3580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3852 -ip 3852
1⤵
PID:3540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3852 -ip 3852
1⤵
PID:3708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 3852 -ip 3852
1⤵
PID:3896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 3852 -ip 3852
1⤵
PID:1388

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\V1S8HV7P\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3852-2-0x00000000022D0000-0x000000000230C000-memory.dmp

Filesize
240KB

Download
memory/3852-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3852-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/3852-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3852-13-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/3852-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3852-16-0x00000000022D0000-0x000000000230C000-memory.dmp

Filesize
240KB

Download
memory/3852-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3852-27-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3852-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3852-35-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

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