gcleaner | dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5

General

Target

dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe
Size

399KB
MD5

3b48a1c694ac54a13dddd809ccc0c3f5
SHA1

55d7ea8f37ac8206f70fd8e2cc47395633abe495
SHA256

dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5
SHA512

d63406e20ae77bdad9c9b06d426db00386c7bc1e1af3b28fd12066e22090cafde130dc7fc78e17ada0ec2945ca224614710ce5af64bf9429684f7cbafb5afdc9
SSDEEP

12288:r5S6HYfKTG0981SYJZ3vjWOOGBaGhFCZ:rgtfYxMtJlvjWOOeI

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe

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

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
3452	2312	WerFault.exe	82
2556	2312	WerFault.exe	82
4420	2312	WerFault.exe	82
4940	2312	WerFault.exe	82
1872	2312	WerFault.exe	82
4432	2312	WerFault.exe	82
3900	2312	WerFault.exe	82
2220	2312	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	dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.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
3064	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3064	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 4692	2312	dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe	108
PID 2312 wrote to memory of 4692	2312	dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe	108
PID 2312 wrote to memory of 4692	2312	dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe	108
PID 4692 wrote to memory of 3064	4692	cmd.exe	112
PID 4692 wrote to memory of 3064	4692	cmd.exe	112
PID 4692 wrote to memory of 3064	4692	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe
"C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 740
  2⤵
  - Program crash
  PID:3452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 780
  2⤵
  - Program crash
  PID:2556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 780
  2⤵
  - Program crash
  PID:4420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 772
  2⤵
  - Program crash
  PID:4940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 904
  2⤵
  - Program crash
  PID:1872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 980
  2⤵
  - Program crash
  PID:4432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 1392
  2⤵
  - Program crash
  PID:3900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4692
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 1256
  2⤵
  - Program crash
  PID:2220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2312 -ip 2312
1⤵
PID:2116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2312 -ip 2312
1⤵
PID:1492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2312 -ip 2312
1⤵
PID:4912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2312 -ip 2312
1⤵
PID:3368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2312 -ip 2312
1⤵
PID:4496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2312 -ip 2312
1⤵
PID:3820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2312 -ip 2312
1⤵
PID:2808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2312 -ip 2312
1⤵
PID:4680

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\3HDB1LPD\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2312-1-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/2312-2-0x00000000006C0000-0x00000000006ED000-memory.dmp

Filesize
180KB

Download
memory/2312-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2312-8-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/2312-11-0x00000000006C0000-0x00000000006ED000-memory.dmp

Filesize
180KB

Download
memory/2312-10-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2312-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2312-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2312-21-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download

Analysis

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