gcleaner | 80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052

General

Target

80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.exe
Size

379KB
MD5

74042996562dc0ae5689933fa7bcd340
SHA1

50ccc368455a1e51f7387161df71bdc3663bac9a
SHA256

80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052
SHA512

7c3785d3704199a35ea91e47e139be45f3c9f4cdeefbc125695000387a7e1552cfd79b2c673bbf124009285f4736da4b7d1d79e63053c33f0ad78be84a12d64e
SSDEEP

6144:O/uQMbZUMUy+u5ZEwa1ipqv1yCGKNSsKR9Rrj2WgepP/kjWbAcu:OWQMbmMUyr5Xq9nGNtE+pP8jW

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

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

pid	pid_target	Process	procid_target
1660	2984	WerFault.exe	83
4016	2984	WerFault.exe	83
2200	2984	WerFault.exe	83
1556	2984	WerFault.exe	83
3248	2984	WerFault.exe	83
4172	2984	WerFault.exe	83
3056	2984	WerFault.exe	83
5080	2984	WerFault.exe	83
3532	2984	WerFault.exe	83

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	80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.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
2100	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2100	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2984 wrote to memory of 2312	2984	80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.exe	106
PID 2984 wrote to memory of 2312	2984	80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.exe	106
PID 2984 wrote to memory of 2312	2984	80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.exe	106
PID 2312 wrote to memory of 2100	2312	cmd.exe	110
PID 2312 wrote to memory of 2100	2312	cmd.exe	110
PID 2312 wrote to memory of 2100	2312	cmd.exe	110

C:\Users\Admin\AppData\Local\Temp\80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.exe
"C:\Users\Admin\AppData\Local\Temp\80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 744
  2⤵
  - Program crash
  PID:1660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 784
  2⤵
  - Program crash
  PID:4016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 784
  2⤵
  - Program crash
  PID:2200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 836
  2⤵
  - Program crash
  PID:1556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 904
  2⤵
  - Program crash
  PID:3248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 1004
  2⤵
  - Program crash
  PID:4172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 1332
  2⤵
  - Program crash
  PID:3056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2312
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "80720127ec79062ef6f1921a999e537b5de8bcacbe95f441a171c10a78489052N.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 1456
  2⤵
  - Program crash
  PID:5080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 1472
  2⤵
  - Program crash
  PID:3532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2984 -ip 2984
1⤵
PID:4972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 2984 -ip 2984
1⤵
PID:1272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2984 -ip 2984
1⤵
PID:3332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2984 -ip 2984
1⤵
PID:4144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 2984 -ip 2984
1⤵
PID:920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 2984 -ip 2984
1⤵
PID:2152

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 2984 -ip 2984
1⤵
PID:2120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 2984 -ip 2984
1⤵
PID:4308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 612 -p 2984 -ip 2984
1⤵
PID:1868

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\951G8FD5\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2984-1-0x0000000000740000-0x0000000000840000-memory.dmp

Filesize
1024KB

Download
memory/2984-2-0x00000000021E0000-0x000000000220D000-memory.dmp

Filesize
180KB

Download
memory/2984-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2984-8-0x0000000000740000-0x0000000000840000-memory.dmp

Filesize
1024KB

Download
memory/2984-10-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/2984-11-0x00000000021E0000-0x000000000220D000-memory.dmp

Filesize
180KB

Download
memory/2984-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2984-21-0x0000000000400000-0x0000000000493000-memory.dmp

Filesize
588KB

Download
memory/2984-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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