gcleaner | a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529

General

Target

a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe
Size

293KB
MD5

c5a32e576a25c81e53f6b009815147e2
SHA1

04c91b37cf00bfa518823305f4fb86dd4814d91c
SHA256

a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529
SHA512

ed4d89634634a6c356739800558b3a47378fa5b5ac9169c573f9df3d94e5d606922fcdf0c6f372a7263ed6899afc99fc9deb5292359471c7c8eabdb0c309ade2
SSDEEP

3072:sxDml5hUlhgPr1R9nK6czues7jKGRsdqjIyCgzNmPAp5TQ+CoN7UH+jIFBxqXYUl:sxKlj1K6czues7REOIU6+Fac+qI

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.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
1928	4716	WerFault.exe	82
1028	4716	WerFault.exe	82
4672	4716	WerFault.exe	82
3604	4716	WerFault.exe	82
2580	4716	WerFault.exe	82
4932	4716	WerFault.exe	82
1668	4716	WerFault.exe	82
1108	4716	WerFault.exe	82
1232	4716	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	a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.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
4292	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4292	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4716 wrote to memory of 400	4716	a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe	103
PID 4716 wrote to memory of 400	4716	a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe	103
PID 4716 wrote to memory of 400	4716	a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe	103
PID 400 wrote to memory of 4292	400	cmd.exe	107
PID 400 wrote to memory of 4292	400	cmd.exe	107
PID 400 wrote to memory of 4292	400	cmd.exe	107

C:\Users\Admin\AppData\Local\Temp\a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe
"C:\Users\Admin\AppData\Local\Temp\a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 748
  2⤵
  - Program crash
  PID:1928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 748
  2⤵
  - Program crash
  PID:1028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 772
  2⤵
  - Program crash
  PID:4672
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 784
  2⤵
  - Program crash
  PID:3604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 904
  2⤵
  - Program crash
  PID:2580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 908
  2⤵
  - Program crash
  PID:4932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 1080
  2⤵
  - Program crash
  PID:1668
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 1440
  2⤵
  - Program crash
  PID:1108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:400
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 1492
  2⤵
  - Program crash
  PID:1232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4716 -ip 4716
1⤵
PID:1696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4716 -ip 4716
1⤵
PID:1888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4716 -ip 4716
1⤵
PID:1804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4716 -ip 4716
1⤵
PID:1348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4716 -ip 4716
1⤵
PID:4436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4716 -ip 4716
1⤵
PID:2692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4716 -ip 4716
1⤵
PID:2228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4716 -ip 4716
1⤵
PID:696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4716 -ip 4716
1⤵
PID:4340

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\JAZ6MGFU\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4716-1-0x00007FFFF05B0000-0x00007FFFF07A5000-memory.dmp

Filesize
2.0MB

Download
memory/4716-6-0x00007FFFF05B0000-0x00007FFFF07A5000-memory.dmp

Filesize
2.0MB

Download
memory/4716-8-0x0000000000400000-0x0000000002B4C000-memory.dmp

Filesize
39.3MB

Download
memory/4716-18-0x00007FFFF05B0000-0x00007FFFF07A5000-memory.dmp

Filesize
2.0MB

Download
memory/4716-17-0x0000000000400000-0x0000000002B4C000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing