gcleaner | cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae

General

Target

cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.exe
Size

277KB
MD5

8ff1a02c7c96c93cc812e7106ecf2fe6
SHA1

6dc570c9f59867bc0451d839e3b761f5b24df7a0
SHA256

cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae
SHA512

2c4392b207fdcae45e867045186a981494affe3261ae049b0dca9c4c0924aa24d1df026efbab0cea6173f762944916ea0906f757df8f4fe5ab26817450d2c907
SSDEEP

6144:pBoUgpj8IR8spQ/krnpobL4A3LWmCj0hTi4Q6IjRtIw:ToUgp8spHs4AbW4hTikI

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.exe

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

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
3952	4324	WerFault.exe	82
1808	4324	WerFault.exe	82
5092	4324	WerFault.exe	82
3460	4324	WerFault.exe	82
3640	4324	WerFault.exe	82
4644	4324	WerFault.exe	82
1020	4324	WerFault.exe	82
1116	4324	WerFault.exe	82
2132	4324	WerFault.exe	82
60	4324	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	cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.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
8	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	8	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 4128	4324	cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.exe	115
PID 4324 wrote to memory of 4128	4324	cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.exe	115
PID 4324 wrote to memory of 4128	4324	cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.exe	115
PID 4128 wrote to memory of 8	4128	cmd.exe	119
PID 4128 wrote to memory of 8	4128	cmd.exe	119
PID 4128 wrote to memory of 8	4128	cmd.exe	119

C:\Users\Admin\AppData\Local\Temp\cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.exe
"C:\Users\Admin\AppData\Local\Temp\cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4324
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 440
  2⤵
  - Program crash
  PID:3952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 496
  2⤵
  - Program crash
  PID:1808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 748
  2⤵
  - Program crash
  PID:5092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 768
  2⤵
  - Program crash
  PID:3460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 748
  2⤵
  - Program crash
  PID:3640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 788
  2⤵
  - Program crash
  PID:4644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 912
  2⤵
  - Program crash
  PID:1020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 984
  2⤵
  - Program crash
  PID:1116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1652
  2⤵
  - Program crash
  PID:2132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4128
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "cc9b97672d32e3017c5044b48312043737a301cd4d861b97f95f184bf30a97ae.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:8
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1300
  2⤵
  - Program crash
  PID:60

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4324 -ip 4324
1⤵
PID:4836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4324 -ip 4324
1⤵
PID:3168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4324 -ip 4324
1⤵
PID:3404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4324 -ip 4324
1⤵
PID:3008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4324 -ip 4324
1⤵
PID:3100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4324 -ip 4324
1⤵
PID:1988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4324 -ip 4324
1⤵
PID:2460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4324 -ip 4324
1⤵
PID:4608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4324 -ip 4324
1⤵
PID:4116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 4324 -ip 4324
1⤵
PID:1816

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\68XY2BI1\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4324-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/4324-2-0x0000000002070000-0x00000000020AB000-memory.dmp

Filesize
236KB

Download
memory/4324-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4324-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4324-13-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/4324-15-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4324-16-0x0000000002070000-0x00000000020AB000-memory.dmp

Filesize
236KB

Download
memory/4324-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4324-27-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4324-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4324-35-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download

Analysis

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