gcleaner | 84b4619b20733b381b174dcc42736d213041c1d5f9abc0eaf9e8ea46ab64281a

General

Target

e267b3d7ece1616f74c5b7cca4a80350N.exe
Size

399KB
MD5

e267b3d7ece1616f74c5b7cca4a80350
SHA1

61b81ec2e4315d3cec2f09e378ffc1babc197105
SHA256

84b4619b20733b381b174dcc42736d213041c1d5f9abc0eaf9e8ea46ab64281a
SHA512

608fca0fe5c3d187cc1aec6ed89a81303d70cf42a8f7e780c3f781bbdbd35d485ef6722dadcd908031797eca2bc7188ac4bee5bcf837c2da6add4ddb1f7df785
SSDEEP

6144:TtoOr36fKef2vsbPN3dPyGfYoUQrJdXTxA:5oOr36fKef4sx3dqGgoUQ3X

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	e267b3d7ece1616f74c5b7cca4a80350N.exe

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

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
4992	2732	WerFault.exe	81
3964	2732	WerFault.exe	81
4896	2732	WerFault.exe	81
2340	2732	WerFault.exe	81
916	2732	WerFault.exe	81
2200	2732	WerFault.exe	81
1496	2732	WerFault.exe	81
4256	2732	WerFault.exe	81

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	e267b3d7ece1616f74c5b7cca4a80350N.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
3652	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3652	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 640	2732	e267b3d7ece1616f74c5b7cca4a80350N.exe	110
PID 2732 wrote to memory of 640	2732	e267b3d7ece1616f74c5b7cca4a80350N.exe	110
PID 2732 wrote to memory of 640	2732	e267b3d7ece1616f74c5b7cca4a80350N.exe	110
PID 640 wrote to memory of 3652	640	cmd.exe	112
PID 640 wrote to memory of 3652	640	cmd.exe	112
PID 640 wrote to memory of 3652	640	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\e267b3d7ece1616f74c5b7cca4a80350N.exe
"C:\Users\Admin\AppData\Local\Temp\e267b3d7ece1616f74c5b7cca4a80350N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 740
  2⤵
  - Program crash
  PID:4992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 748
  2⤵
  - Program crash
  PID:3964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 748
  2⤵
  - Program crash
  PID:4896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 824
  2⤵
  - Program crash
  PID:2340
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 904
  2⤵
  - Program crash
  PID:916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 1000
  2⤵
  - Program crash
  PID:2200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 1020
  2⤵
  - Program crash
  PID:1496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 1452
  2⤵
  - Program crash
  PID:4256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "e267b3d7ece1616f74c5b7cca4a80350N.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\e267b3d7ece1616f74c5b7cca4a80350N.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:640
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "e267b3d7ece1616f74c5b7cca4a80350N.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2732 -ip 2732
1⤵
PID:4240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2732 -ip 2732
1⤵
PID:3100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2732 -ip 2732
1⤵
PID:4544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2732 -ip 2732
1⤵
PID:740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2732 -ip 2732
1⤵
PID:4468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2732 -ip 2732
1⤵
PID:4616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2732 -ip 2732
1⤵
PID:3440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2732 -ip 2732
1⤵
PID:3108

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\NMN7D09E\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2732-2-0x0000000002340000-0x000000000236D000-memory.dmp

Filesize
180KB

Download
memory/2732-1-0x0000000000810000-0x0000000000910000-memory.dmp

Filesize
1024KB

Download
memory/2732-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2732-7-0x0000000000810000-0x0000000000910000-memory.dmp

Filesize
1024KB

Download
memory/2732-10-0x0000000002340000-0x000000000236D000-memory.dmp

Filesize
180KB

Download
memory/2732-9-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2732-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2732-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2732-21-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download

Analysis

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