gcleaner | 9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a

General

Target

9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a.exe
Size

422KB
MD5

e50b99292f0017111fe1fe7e128fb254
SHA1

6f420c3f5e5818d013d69a1f7427cad302deb70d
SHA256

9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a
SHA512

878e7d9a8f4cdac6bf0e3b1a87979935b113d633aeffbbaa6a54c9b41a60d312624294c171c6ac4fce3bfe19e6ef98ce5553b45defbe3143e2d0ecb05d17c961
SSDEEP

6144:1k3gyX30PRFDxCvduYO4z5UPYDPkbcGxCRJjs5ruHP6B:cgZRiv24zWPQkbPxCiuHi

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

45.91.200.135

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 11 IoCs

pid	pid_target	Process	procid_target
4944	4928	WerFault.exe	79
2568	4928	WerFault.exe	79
2412	4928	WerFault.exe	79
1716	4928	WerFault.exe	79
5084	4928	WerFault.exe	79
3968	4928	WerFault.exe	79
2852	4928	WerFault.exe	79
4076	4928	WerFault.exe	79
1232	4928	WerFault.exe	79
3392	4928	WerFault.exe	79
1700	4928	WerFault.exe	79

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	9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a.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
3432	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3432	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 5808	4928	9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a.exe	103
PID 4928 wrote to memory of 5808	4928	9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a.exe	103
PID 4928 wrote to memory of 5808	4928	9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a.exe	103
PID 5808 wrote to memory of 3432	5808	cmd.exe	106
PID 5808 wrote to memory of 3432	5808	cmd.exe	106
PID 5808 wrote to memory of 3432	5808	cmd.exe	106

C:\Users\Admin\AppData\Local\Temp\9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a.exe
"C:\Users\Admin\AppData\Local\Temp\9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 468
  2⤵
  - Program crash
  PID:4944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 520
  2⤵
  - Program crash
  PID:2568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 780
  2⤵
  - Program crash
  PID:2412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 780
  2⤵
  - Program crash
  PID:1716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 812
  2⤵
  - Program crash
  PID:5084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 852
  2⤵
  - Program crash
  PID:3968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 960
  2⤵
  - Program crash
  PID:2852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 964
  2⤵
  - Program crash
  PID:4076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 1104
  2⤵
  - Program crash
  PID:1232
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 1632
  2⤵
  - Program crash
  PID:3392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5808
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "9ef60c7ca941abd85ad43062db61b5f67ce8aa070bcd23d37f063764e35e383a.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 1708
  2⤵
  - Program crash
  PID:1700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4928 -ip 4928
1⤵
PID:3164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4928 -ip 4928
1⤵
PID:5592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4928 -ip 4928
1⤵
PID:4836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4928 -ip 4928
1⤵
PID:3128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4928 -ip 4928
1⤵
PID:4440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4928 -ip 4928
1⤵
PID:5776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4928 -ip 4928
1⤵
PID:3156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 4928 -ip 4928
1⤵
PID:2924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4928 -ip 4928
1⤵
PID:2972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 4928 -ip 4928
1⤵
PID:5980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 4928 -ip 4928
1⤵
PID:1360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\OZ1VS64O\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4928-2-0x0000000004320000-0x000000000435B000-memory.dmp

Filesize
236KB

Download
memory/4928-1-0x0000000002700000-0x0000000002800000-memory.dmp

Filesize
1024KB

Download
memory/4928-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4928-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4928-13-0x0000000002700000-0x0000000002800000-memory.dmp

Filesize
1024KB

Download
memory/4928-14-0x0000000004320000-0x000000000435B000-memory.dmp

Filesize
236KB

Download
memory/4928-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4928-16-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/4928-30-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/4928-38-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4928-37-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download

Analysis

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