gcleaner | f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe

General

Target

f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe.exe
Size

402KB
MD5

571f20ba29dd2fe34084b2b07b0c5d84
SHA1

b76dc5e630b30bd466ce6b5320ec6dcfedf317a7
SHA256

f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe
SHA512

3026dc2dbfb0b07550cc6b05bb017930ed0f9c164f33c9ef9964e7deed157e5482d34b0a0fed57ff42199454c7c7d4881c4b62ab72d8e80e442ffb69381338d6
SSDEEP

6144:UiL91yOsX7IM0A1Z0CaSgGNWwSRvUctl/SDCnom5ROqh:Ue91yOsL/0QaPGMwKf/S+noIh

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
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 10 IoCs

pid	pid_target	Process	procid_target
2296	764	WerFault.exe	80
4040	764	WerFault.exe	80
3656	764	WerFault.exe	80
3248	764	WerFault.exe	80
1904	764	WerFault.exe	80
2008	764	WerFault.exe	80
2696	764	WerFault.exe	80
4692	764	WerFault.exe	80
4072	764	WerFault.exe	80
2348	764	WerFault.exe	80

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	f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe.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
3932	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3932	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 764 wrote to memory of 2388	764	f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe.exe	102
PID 764 wrote to memory of 2388	764	f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe.exe	102
PID 764 wrote to memory of 2388	764	f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe.exe	102
PID 2388 wrote to memory of 3932	2388	cmd.exe	107
PID 2388 wrote to memory of 3932	2388	cmd.exe	107
PID 2388 wrote to memory of 3932	2388	cmd.exe	107

C:\Users\Admin\AppData\Local\Temp\f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe.exe
"C:\Users\Admin\AppData\Local\Temp\f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 476
  2⤵
  - Program crash
  PID:2296
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 796
  2⤵
  - Program crash
  PID:4040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 796
  2⤵
  - Program crash
  PID:3656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 852
  2⤵
  - Program crash
  PID:3248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 840
  2⤵
  - Program crash
  PID:1904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 976
  2⤵
  - Program crash
  PID:2008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 980
  2⤵
  - Program crash
  PID:2696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 980
  2⤵
  - Program crash
  PID:4692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 1772
  2⤵
  - Program crash
  PID:4072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "f615934fe70dc48b8ea23704a7f57454cc282cb74d4b30f8ae452412903f10fe.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 488
  2⤵
  - Program crash
  PID:2348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 764 -ip 764
1⤵
PID:4972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 764 -ip 764
1⤵
PID:5044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 764 -ip 764
1⤵
PID:424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 764 -ip 764
1⤵
PID:3868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 764 -ip 764
1⤵
PID:1244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 764 -ip 764
1⤵
PID:4104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 764 -ip 764
1⤵
PID:2700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 764 -ip 764
1⤵
PID:2868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 764 -ip 764
1⤵
PID:4544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 764 -ip 764
1⤵
PID:5064

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\ZQ9FC15F\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/764-1-0x0000000000700000-0x0000000000800000-memory.dmp

Filesize
1024KB

Download
memory/764-2-0x0000000002300000-0x000000000233C000-memory.dmp

Filesize
240KB

Download
memory/764-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/764-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/764-13-0x0000000000700000-0x0000000000800000-memory.dmp

Filesize
1024KB

Download
memory/764-15-0x0000000002300000-0x000000000233C000-memory.dmp

Filesize
240KB

Download
memory/764-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/764-16-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/764-29-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/764-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/764-35-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download

Analysis

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