gcleaner | f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71

General

Target

f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.exe
Size

269KB
MD5

42a532c766be7b83f152ab9b8293d6f7
SHA1

4681e65e2fad14302545f5263e320812e77eb79e
SHA256

f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71
SHA512

2ee17d26c558196db029d0b6c1d2604f27e6869c2e719b05409c3f215f4c75d96d5341c10ccf1f1ba730ce9a45fe857bd158fec496f1f8fd47570aea6de659b6
SSDEEP

3072:GSJ+1mhZM3xrI5ON7hZda4L/jgFQmKoei3TZ1g95OqJzxB9HPuGPLU9MCGbXal/T:v+1msI5cTfgC0eM9DqpxB9vuGPI+n

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.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
216	3764	WerFault.exe	83
3516	3764	WerFault.exe	83
1684	3764	WerFault.exe	83
3504	3764	WerFault.exe	83
1528	3764	WerFault.exe	83
2840	3764	WerFault.exe	83
3032	3764	WerFault.exe	83
4956	3764	WerFault.exe	83
4320	3764	WerFault.exe	83

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	f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2996	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2996	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3764 wrote to memory of 1756	3764	f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.exe	111
PID 3764 wrote to memory of 1756	3764	f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.exe	111
PID 3764 wrote to memory of 1756	3764	f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.exe	111
PID 1756 wrote to memory of 2996	1756	cmd.exe	115
PID 1756 wrote to memory of 2996	1756	cmd.exe	115
PID 1756 wrote to memory of 2996	1756	cmd.exe	115

C:\Users\Admin\AppData\Local\Temp\f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.exe
"C:\Users\Admin\AppData\Local\Temp\f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 740
  2⤵
  - Program crash
  PID:216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 748
  2⤵
  - Program crash
  PID:3516
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 792
  2⤵
  - Program crash
  PID:1684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 832
  2⤵
  - Program crash
  PID:3504
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 796
  2⤵
  - Program crash
  PID:1528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 828
  2⤵
  - Program crash
  PID:2840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 1076
  2⤵
  - Program crash
  PID:3032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 1332
  2⤵
  - Program crash
  PID:4956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1756
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "f08fd79935ca480735a8d1663a46823680a3478bad7ff6ae6aeb579362218c71.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 1456
  2⤵
  - Program crash
  PID:4320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3764 -ip 3764
1⤵
PID:2584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3764 -ip 3764
1⤵
PID:2124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3764 -ip 3764
1⤵
PID:4656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3764 -ip 3764
1⤵
PID:4852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3764 -ip 3764
1⤵
PID:3796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3764 -ip 3764
1⤵
PID:4008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3764 -ip 3764
1⤵
PID:804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3764 -ip 3764
1⤵
PID:4364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3764 -ip 3764
1⤵
PID:4988

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\HA5FC889\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3764-1-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/3764-2-0x0000000002CE0000-0x0000000002D0D000-memory.dmp

Filesize
180KB

Download
memory/3764-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3764-8-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/3764-11-0x0000000002CE0000-0x0000000002D0D000-memory.dmp

Filesize
180KB

Download
memory/3764-10-0x0000000000400000-0x0000000002B49000-memory.dmp

Filesize
39.3MB

Download
memory/3764-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3764-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3764-21-0x0000000000400000-0x0000000002B49000-memory.dmp

Filesize
39.3MB

Download

Analysis

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