gcleaner | 134632ee7c27ac7c859127e0814a3076e5aaf33fb2d3058a14ab7a973af3a119

General

Target

2fa023187ddc468439db40086c1a7460N.exe
Size

422KB
MD5

2fa023187ddc468439db40086c1a7460
SHA1

028ca13565678497f7f1638bdcf7af81a28cac8f
SHA256

134632ee7c27ac7c859127e0814a3076e5aaf33fb2d3058a14ab7a973af3a119
SHA512

9112fde9371c82305ca1122de52cbf6d742667c96191425f8468876ee75712a48da5b74209c8aa0bfb9d8365b017f2c10db9c24d3a233d0cb25b2ee71be37257
SSDEEP

6144:vspWxDxtsNSiSRRDpOshFzcDt60aYVaVTSx1P8e/o:vuWxDxGKpMshF4M7Yqex1z

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	2fa023187ddc468439db40086c1a7460N.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
1420	3276	WerFault.exe	82
1900	3276	WerFault.exe	82
2460	3276	WerFault.exe	82
4132	3276	WerFault.exe	82
2120	3276	WerFault.exe	82
2524	3276	WerFault.exe	82
1228	3276	WerFault.exe	82
712	3276	WerFault.exe	82
4576	3276	WerFault.exe	82

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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2fa023187ddc468439db40086c1a7460N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2404	taskkill.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3276	2fa023187ddc468439db40086c1a7460N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2404	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3276 wrote to memory of 4580	3276	2fa023187ddc468439db40086c1a7460N.exe	113
PID 3276 wrote to memory of 4580	3276	2fa023187ddc468439db40086c1a7460N.exe	113
PID 3276 wrote to memory of 4580	3276	2fa023187ddc468439db40086c1a7460N.exe	113
PID 4580 wrote to memory of 2404	4580	cmd.exe	117
PID 4580 wrote to memory of 2404	4580	cmd.exe	117
PID 4580 wrote to memory of 2404	4580	cmd.exe	117

C:\Users\Admin\AppData\Local\Temp\2fa023187ddc468439db40086c1a7460N.exe
"C:\Users\Admin\AppData\Local\Temp\2fa023187ddc468439db40086c1a7460N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3276
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 452
  2⤵
  - Program crash
  PID:1420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 764
  2⤵
  - Program crash
  PID:1900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 784
  2⤵
  - Program crash
  PID:2460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 784
  2⤵
  - Program crash
  PID:4132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 856
  2⤵
  - Program crash
  PID:2120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 928
  2⤵
  - Program crash
  PID:2524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 1000
  2⤵
  - Program crash
  PID:1228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 1684
  2⤵
  - Program crash
  PID:712
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "2fa023187ddc468439db40086c1a7460N.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\2fa023187ddc468439db40086c1a7460N.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4580
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "2fa023187ddc468439db40086c1a7460N.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 1648
  2⤵
  - Program crash
  PID:4576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3276 -ip 3276
1⤵
PID:2032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3276 -ip 3276
1⤵
PID:4888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 3276 -ip 3276
1⤵
PID:428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 3276 -ip 3276
1⤵
PID:392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3276 -ip 3276
1⤵
PID:3132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3276 -ip 3276
1⤵
PID:5044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3276 -ip 3276
1⤵
PID:3500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3276 -ip 3276
1⤵
PID:4568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3276 -ip 3276
1⤵
PID:4240

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\THHXO5RX\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3276-10-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3276-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3276-7-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/3276-9-0x0000000002340000-0x000000000237C000-memory.dmp

Filesize
240KB

Download
memory/3276-8-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/3276-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/3276-12-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3276-2-0x0000000002340000-0x000000000237C000-memory.dmp

Filesize
240KB

Download
memory/3276-30-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/3276-33-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/3276-43-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3276-42-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download

Analysis

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