gcleaner | 2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697

General

Target

2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.exe
Size

282KB
MD5

1898e1e3c3624742e745268c86ac5efa
SHA1

96b827774ff1e88d7fddaabf535a3635318c156d
SHA256

2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697
SHA512

b9e2b983bd35fb931d8ab0f02a06985bdc6b53fb20c9e0727d2e743e22406c68887158faedd605826ccdff00a218f04422c1f11ec62404fc34d82aa46f803cf0
SSDEEP

6144:3QVk9GPx0Nh0K6/Qdm2Jb/pkKqProI+0:3QGsPxQhDrp7qPro

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.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
3192	5044	WerFault.exe	89
2572	5044	WerFault.exe	89
3840	5044	WerFault.exe	89
5948	5044	WerFault.exe	89
1828	5044	WerFault.exe	89
4352	5044	WerFault.exe	89
3708	5044	WerFault.exe	89
2520	5044	WerFault.exe	89
4084	5044	WerFault.exe	89

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	2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.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
3328	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3328	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5044 wrote to memory of 1236	5044	2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.exe	119
PID 5044 wrote to memory of 1236	5044	2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.exe	119
PID 5044 wrote to memory of 1236	5044	2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.exe	119
PID 1236 wrote to memory of 3328	1236	cmd.exe	123
PID 1236 wrote to memory of 3328	1236	cmd.exe	123
PID 1236 wrote to memory of 3328	1236	cmd.exe	123

C:\Users\Admin\AppData\Local\Temp\2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.exe
"C:\Users\Admin\AppData\Local\Temp\2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 732
  2⤵
  - Program crash
  PID:3192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 784
  2⤵
  - Program crash
  PID:2572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 800
  2⤵
  - Program crash
  PID:3840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 832
  2⤵
  - Program crash
  PID:5948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 904
  2⤵
  - Program crash
  PID:1828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 980
  2⤵
  - Program crash
  PID:4352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 1020
  2⤵
  - Program crash
  PID:3708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 1444
  2⤵
  - Program crash
  PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1236
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "2268bf9b36b0c2d19ca70ed7b1556cfc7b67dae39b8eb49c8e37b532d60c6697.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 1288
  2⤵
  - Program crash
  PID:4084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5044 -ip 5044
1⤵
PID:6084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 5044 -ip 5044
1⤵
PID:452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 5044 -ip 5044
1⤵
PID:856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5044 -ip 5044
1⤵
PID:5012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 5044 -ip 5044
1⤵
PID:1368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 5044 -ip 5044
1⤵
PID:2576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 5044 -ip 5044
1⤵
PID:1048

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4380,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=1288 /prefetch:8
1⤵
PID:1184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 5044 -ip 5044
1⤵
PID:5076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 5044 -ip 5044
1⤵
PID:4072

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\BKKBWXOR\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/5044-1-0x0000000002B40000-0x0000000002C40000-memory.dmp

Filesize
1024KB

Download
memory/5044-2-0x0000000002A50000-0x0000000002A7D000-memory.dmp

Filesize
180KB

Download
memory/5044-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5044-4-0x0000000002B40000-0x0000000002C40000-memory.dmp

Filesize
1024KB

Download
memory/5044-5-0x0000000002A50000-0x0000000002A7D000-memory.dmp

Filesize
180KB

Download
memory/5044-6-0x0000000000400000-0x0000000002797000-memory.dmp

Filesize
35.6MB

Download
memory/5044-9-0x0000000000400000-0x0000000002797000-memory.dmp

Filesize
35.6MB

Download
memory/5044-27-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5044-26-0x0000000000400000-0x0000000002797000-memory.dmp

Filesize
35.6MB

Download

Analysis

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