gcleaner | 408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df

General

Target

408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.exe
Size

424KB
MD5

6ad146295efd55b866c27e296621835d
SHA1

8da71a335b1b6530d179ff85660badd525f6063e
SHA256

408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df
SHA512

5fb9994157738679aa7b110f218e2e253857b53aff2dae7fc28f51bac49d0f404274260006fe15107deb602f2a1c53637b5e5ed34cbb3216e1a3ba2833c01b97
SSDEEP

6144:7sf/JHOjfbLlSozffo+ANlfjVYWUPoQ+uhxfVhdnYx3JTV1E8X2+OkXwA:7UJHOjfbLlSKAFWAQ+G5dKrCpk

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	408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.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
4132	2096	WerFault.exe	83
1652	2096	WerFault.exe	83
4184	2096	WerFault.exe	83
948	2096	WerFault.exe	83
2060	2096	WerFault.exe	83
2448	2096	WerFault.exe	83
2948	2096	WerFault.exe	83
468	2096	WerFault.exe	83
3176	2096	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	408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.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
3964	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3964	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 556	2096	408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.exe	114
PID 2096 wrote to memory of 556	2096	408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.exe	114
PID 2096 wrote to memory of 556	2096	408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.exe	114
PID 556 wrote to memory of 3964	556	cmd.exe	116
PID 556 wrote to memory of 3964	556	cmd.exe	116
PID 556 wrote to memory of 3964	556	cmd.exe	116

C:\Users\Admin\AppData\Local\Temp\408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.exe
"C:\Users\Admin\AppData\Local\Temp\408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 444
  2⤵
  - Program crash
  PID:4132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 764
  2⤵
  - Program crash
  PID:1652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 804
  2⤵
  - Program crash
  PID:4184
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 764
  2⤵
  - Program crash
  PID:948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 784
  2⤵
  - Program crash
  PID:2060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 932
  2⤵
  - Program crash
  PID:2448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 1004
  2⤵
  - Program crash
  PID:2948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 932
  2⤵
  - Program crash
  PID:468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 1576
  2⤵
  - Program crash
  PID:3176
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:556
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "408919a4170d80bc431ba9f08f1409e6f4eb15630cf6934e3924eb057f5332df.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2096 -ip 2096
1⤵
PID:540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2096 -ip 2096
1⤵
PID:3000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2096 -ip 2096
1⤵
PID:3788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2096 -ip 2096
1⤵
PID:2956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2096 -ip 2096
1⤵
PID:1976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2096 -ip 2096
1⤵
PID:3904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2096 -ip 2096
1⤵
PID:2488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2096 -ip 2096
1⤵
PID:4208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2096 -ip 2096
1⤵
PID:2352

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\5JGBC19U\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2096-1-0x00000000007F0000-0x00000000008F0000-memory.dmp

Filesize
1024KB

Download
memory/2096-2-0x0000000000790000-0x00000000007CB000-memory.dmp

Filesize
236KB

Download
memory/2096-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2096-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2096-13-0x00000000007F0000-0x00000000008F0000-memory.dmp

Filesize
1024KB

Download
memory/2096-16-0x0000000000790000-0x00000000007CB000-memory.dmp

Filesize
236KB

Download
memory/2096-15-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2096-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2096-29-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2096-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2096-35-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download

Analysis

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