gcleaner | c0e34561ec76a6668d534f3f9e4b5e6438674cd7f3d3bba2459b3622ed8d6c50

General

Target

9a78b64258f92758181308bf700a48e2.exe
Size

404KB
MD5

9a78b64258f92758181308bf700a48e2
SHA1

21f5459335a6920718737a8b3bb69070c1c57bf3
SHA256

c0e34561ec76a6668d534f3f9e4b5e6438674cd7f3d3bba2459b3622ed8d6c50
SHA512

a1ca8d62c7cc31f26a1b7137f3a2077c0b5508ed740cbeee7ec4e324ec06a8467c1be6e8369f32f484bbf1135febe996e52efbfcd9f7770b511bbe870b69f107
SSDEEP

6144:vzygTYcJjvqoUWd1ci8SHuImXxeCu9FhdOMtX:vmgTYcEoF+SHMXxlu9FhN5

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	9a78b64258f92758181308bf700a48e2.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
4684	2516	WerFault.exe	82
3520	2516	WerFault.exe	82
244	2516	WerFault.exe	82
2100	2516	WerFault.exe	82
2880	2516	WerFault.exe	82
512	2516	WerFault.exe	82
3036	2516	WerFault.exe	82
2196	2516	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	9a78b64258f92758181308bf700a48e2.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
760	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	760	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 3716	2516	9a78b64258f92758181308bf700a48e2.exe	108
PID 2516 wrote to memory of 3716	2516	9a78b64258f92758181308bf700a48e2.exe	108
PID 2516 wrote to memory of 3716	2516	9a78b64258f92758181308bf700a48e2.exe	108
PID 3716 wrote to memory of 760	3716	cmd.exe	112
PID 3716 wrote to memory of 760	3716	cmd.exe	112
PID 3716 wrote to memory of 760	3716	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\9a78b64258f92758181308bf700a48e2.exe
"C:\Users\Admin\AppData\Local\Temp\9a78b64258f92758181308bf700a48e2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 740
  2⤵
  - Program crash
  PID:4684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 748
  2⤵
  - Program crash
  PID:3520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 748
  2⤵
  - Program crash
  PID:244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 832
  2⤵
  - Program crash
  PID:2100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 904
  2⤵
  - Program crash
  PID:2880
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 1000
  2⤵
  - Program crash
  PID:512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 1424
  2⤵
  - Program crash
  PID:3036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "9a78b64258f92758181308bf700a48e2.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\9a78b64258f92758181308bf700a48e2.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3716
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "9a78b64258f92758181308bf700a48e2.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 1364
  2⤵
  - Program crash
  PID:2196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 2516 -ip 2516
1⤵
PID:4644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2516 -ip 2516
1⤵
PID:100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 2516 -ip 2516
1⤵
PID:4736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2516 -ip 2516
1⤵
PID:1100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2516 -ip 2516
1⤵
PID:3468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2516 -ip 2516
1⤵
PID:4504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 2516 -ip 2516
1⤵
PID:1384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 2516 -ip 2516
1⤵
PID:1572

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\N27JXEQ0\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2516-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/2516-2-0x0000000000690000-0x00000000006BD000-memory.dmp

Filesize
180KB

Download
memory/2516-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2516-8-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/2516-11-0x0000000000690000-0x00000000006BD000-memory.dmp

Filesize
180KB

Download
memory/2516-10-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/2516-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2516-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2516-21-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download

Analysis

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