gcleaner | cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b

General

Target

cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.exe
Size

324KB
MD5

de39d38f871167ed066a9d6d3181e2c8
SHA1

c96c26fa89852023fc2d7b39e85c48898444cb90
SHA256

cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b
SHA512

b7c6e893b2c730efd513cbf37dd2a00f87f67d8001f75ba423f992fb0c2e47f93e9ad35fc677ed1a35f60dffd54923480d9ddbe63ad19c7323bf2fe9cfdad5e1
SSDEEP

6144:rCou1DxtV+m2SpmzpOIfyUz/5KmQ4KfhrShNw0pAY/M0z0Vdh1tQ:S19tVd2SapOIfr/ol4Ahryw0pOVdz

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

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.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
1492	3500	WerFault.exe	82
1212	3500	WerFault.exe	82
3356	3500	WerFault.exe	82
440	3500	WerFault.exe	82
2068	3500	WerFault.exe	82
208	3500	WerFault.exe	82
4916	3500	WerFault.exe	82
3932	3500	WerFault.exe	82
3704	3500	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	cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.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
4332	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4332	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3500 wrote to memory of 4436	3500	cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.exe	113
PID 3500 wrote to memory of 4436	3500	cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.exe	113
PID 3500 wrote to memory of 4436	3500	cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.exe	113
PID 4436 wrote to memory of 4332	4436	cmd.exe	115
PID 4436 wrote to memory of 4332	4436	cmd.exe	115
PID 4436 wrote to memory of 4332	4436	cmd.exe	115

C:\Users\Admin\AppData\Local\Temp\cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.exe
"C:\Users\Admin\AppData\Local\Temp\cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 452
  2⤵
  - Program crash
  PID:1492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 500
  2⤵
  - Program crash
  PID:1212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 748
  2⤵
  - Program crash
  PID:3356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 792
  2⤵
  - Program crash
  PID:440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 836
  2⤵
  - Program crash
  PID:2068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 844
  2⤵
  - Program crash
  PID:208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 912
  2⤵
  - Program crash
  PID:4916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 992
  2⤵
  - Program crash
  PID:3932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 1324
  2⤵
  - Program crash
  PID:3704
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4436
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "cfe279a9e9ebf9b9a0bb68a1261aa94d8e8f80e18204d647b0ed853845e1428b.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 3500 -ip 3500
1⤵
PID:3576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3500 -ip 3500
1⤵
PID:2084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3500 -ip 3500
1⤵
PID:2012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3500 -ip 3500
1⤵
PID:1060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3500 -ip 3500
1⤵
PID:3188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3500 -ip 3500
1⤵
PID:4708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 3500 -ip 3500
1⤵
PID:2264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3500 -ip 3500
1⤵
PID:648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 3500 -ip 3500
1⤵
PID:2020

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\5JGBC19U\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3500-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/3500-2-0x00000000004D0000-0x000000000050B000-memory.dmp

Filesize
236KB

Download
memory/3500-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3500-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3500-13-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/3500-14-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/3500-16-0x00000000004D0000-0x000000000050B000-memory.dmp

Filesize
236KB

Download
memory/3500-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3500-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3500-35-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download

Analysis

Sharing