gcleaner | 64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b

General

Target

64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b.exe
Size

388KB
MD5

c265328dee0adc832753ea1e33844f94
SHA1

01cfca1896f942e8429dc22edd58456660ef20c2
SHA256

64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b
SHA512

0ea8af5a65b62364468a4aeb44fa567c8951cf9468dfc67e5ea5fe6f7b0a0ecd969e28e5acc08a3b62c0d4168a7469835d9f137c51c713dd7cdaee40b9d5db70
SSDEEP

6144:aew32m12dBAzpNyFq/y/FwtHplN1njeQ9GW3/f:apmm2dBCNGNcHplPjY

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
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
1936	4688	WerFault.exe	79
1488	4688	WerFault.exe	79
420	4688	WerFault.exe	79
2232	4688	WerFault.exe	79
3868	4688	WerFault.exe	79
652	4688	WerFault.exe	79
2616	4688	WerFault.exe	79
2304	4688	WerFault.exe	79

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	64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b.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
2280	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4688 wrote to memory of 2412	4688	64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b.exe	99
PID 4688 wrote to memory of 2412	4688	64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b.exe	99
PID 4688 wrote to memory of 2412	4688	64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b.exe	99
PID 2412 wrote to memory of 2280	2412	cmd.exe	102
PID 2412 wrote to memory of 2280	2412	cmd.exe	102
PID 2412 wrote to memory of 2280	2412	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b.exe
"C:\Users\Admin\AppData\Local\Temp\64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4688 -s 480
  2⤵
  - Program crash
  PID:1936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4688 -s 804
  2⤵
  - Program crash
  PID:1488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4688 -s 824
  2⤵
  - Program crash
  PID:420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4688 -s 796
  2⤵
  - Program crash
  PID:2232
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4688 -s 868
  2⤵
  - Program crash
  PID:3868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4688 -s 976
  2⤵
  - Program crash
  PID:652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4688 -s 1084
  2⤵
  - Program crash
  PID:2616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4688 -s 1648
  2⤵
  - Program crash
  PID:2304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2412
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "64d87830c3ff551d7790daddb6a06f89cdb161aa92874349b61a6bdf7532f51b.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4688 -ip 4688
1⤵
PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4688 -ip 4688
1⤵
PID:2120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4688 -ip 4688
1⤵
PID:3088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4688 -ip 4688
1⤵
PID:1456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4688 -ip 4688
1⤵
PID:2816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4688 -ip 4688
1⤵
PID:4140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4688 -ip 4688
1⤵
PID:5020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4688 -ip 4688
1⤵
PID:484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\TK007ZTY\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4688-1-0x0000000002560000-0x0000000002660000-memory.dmp

Filesize
1024KB

Download
memory/4688-2-0x00000000042C0000-0x00000000042FB000-memory.dmp

Filesize
236KB

Download
memory/4688-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4688-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4688-13-0x0000000002560000-0x0000000002660000-memory.dmp

Filesize
1024KB

Download
memory/4688-15-0x00000000042C0000-0x00000000042FB000-memory.dmp

Filesize
236KB

Download
memory/4688-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4688-16-0x0000000000400000-0x000000000247A000-memory.dmp

Filesize
32.5MB

Download
memory/4688-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4688-34-0x0000000000400000-0x000000000247A000-memory.dmp

Filesize
32.5MB

Download
memory/4688-35-0x0000000000400000-0x000000000247A000-memory.dmp

Filesize
32.5MB

Download

Analysis

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