gcleaner | 6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98

General

Target

6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe
Size

402KB
MD5

e34d3e95a52de40e5a38ed111876cddf
SHA1

91beb0a96cd84bdf1deb0c14e39521a54f0c0110
SHA256

6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98
SHA512

358f409cd3b36ccce2e8600c400b8cbefa7ad5961e1b77913ac78440880a73b76fe0282752bf5831ee3de61f9d0993db430faff26b22c129fd7d54b82956b808
SSDEEP

6144:tdyq4ShFUO3qBgAA/LWeqpna/nfLqncpD4Pfb8NbvL:tkq9hFUO3qOAaEpOnfLqnc+PfgNbT

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

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe

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
2052	4736	WerFault.exe	83
3864	4736	WerFault.exe	83
4972	4736	WerFault.exe	83
3968	4736	WerFault.exe	83
2968	4736	WerFault.exe	83
4820	4736	WerFault.exe	83
3812	4736	WerFault.exe	83
1072	4736	WerFault.exe	83
3556	4736	WerFault.exe	83
4728	4736	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	6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.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
1852	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1852	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 2280	4736	6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe	119
PID 4736 wrote to memory of 2280	4736	6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe	119
PID 4736 wrote to memory of 2280	4736	6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe	119
PID 2280 wrote to memory of 1852	2280	cmd.exe	123
PID 2280 wrote to memory of 1852	2280	cmd.exe	123
PID 2280 wrote to memory of 1852	2280	cmd.exe	123

C:\Users\Admin\AppData\Local\Temp\6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe
"C:\Users\Admin\AppData\Local\Temp\6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 460
  2⤵
  - Program crash
  PID:2052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 772
  2⤵
  - Program crash
  PID:3864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 780
  2⤵
  - Program crash
  PID:4972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 780
  2⤵
  - Program crash
  PID:3968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 804
  2⤵
  - Program crash
  PID:2968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 928
  2⤵
  - Program crash
  PID:4820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 1004
  2⤵
  - Program crash
  PID:3812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 1084
  2⤵
  - Program crash
  PID:1072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 1560
  2⤵
  - Program crash
  PID:3556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2280
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 1508
  2⤵
  - Program crash
  PID:4728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4736 -ip 4736
1⤵
PID:3056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4736 -ip 4736
1⤵
PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4736 -ip 4736
1⤵
PID:2280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4736 -ip 4736
1⤵
PID:4012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4736 -ip 4736
1⤵
PID:856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4736 -ip 4736
1⤵
PID:3540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4736 -ip 4736
1⤵
PID:4612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4736 -ip 4736
1⤵
PID:4560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4736 -ip 4736
1⤵
PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4736 -ip 4736
1⤵
PID:1572

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\H9MX5QVK\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4736-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

Filesize
1024KB

Download
memory/4736-2-0x0000000000760000-0x000000000079C000-memory.dmp

Filesize
240KB

Download
memory/4736-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4736-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4736-13-0x00000000007A0000-0x00000000008A0000-memory.dmp

Filesize
1024KB

Download
memory/4736-16-0x0000000000760000-0x000000000079C000-memory.dmp

Filesize
240KB

Download
memory/4736-15-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/4736-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4736-27-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/4736-35-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/4736-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

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