gcleaner | 6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999

General

Target

6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
Size

422KB
MD5

8d577a901d3bc4d5d84cfd938cfefe3e
SHA1

b96e97a081ef328b6b22d76569ff06ee8f2472d1
SHA256

6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999
SHA512

3c3e3ba1890561155746a8ef65bab606be14bf02b3c2b5f59ffd890f56037a356b0deafdf7c748cbe6b79370b0dbd2b9fe38515c62b6fe14aa2855bb2eb2a49e
SSDEEP

6144:mP+lSXQSvJaNuY41WxdQWvJpbp6csssruC4x6SI4U2401iHP6B:/lYJZY4QxqSf6KES9UaIHi

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 11 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
3340	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
4580	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
3108	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
1476	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
2552	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
3640	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
1944	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
2708	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
4248	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
784	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
2944	444	WerFault.exe	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe

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

Processes:

cmd.exetaskkill.exe6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

796 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 796 taskkill.exe

pid	process
796	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	796	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.execmd.exe

description	pid	process	target process
PID 444 wrote to memory of 4928	444	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe	cmd.exe
PID 444 wrote to memory of 4928	444	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe	cmd.exe
PID 444 wrote to memory of 4928	444	6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe	cmd.exe
PID 4928 wrote to memory of 796	4928	cmd.exe	taskkill.exe
PID 4928 wrote to memory of 796	4928	cmd.exe	taskkill.exe
PID 4928 wrote to memory of 796	4928	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe
"C:\Users\Admin\AppData\Local\Temp\6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 476
2⤵
- Program crash
PID:3340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 496
2⤵
- Program crash
PID:4580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 768
2⤵
- Program crash
PID:3108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 824
2⤵
- Program crash
PID:1476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 844
2⤵
- Program crash
PID:2552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 872
2⤵
- Program crash
PID:3640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 960
2⤵
- Program crash
PID:1944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 1068
2⤵
- Program crash
PID:2708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 1312
2⤵
- Program crash
PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 1632
2⤵
- Program crash
PID:784

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe" & exit
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4928

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "6a1af23d03fbc1a0fc9a1548b254ea36276e3e5ac3de2f4fdd4f3ddead421999.exe" /f
3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 1684
2⤵
- Program crash
PID:2944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 444 -ip 444
1⤵
PID:3932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 444 -ip 444
1⤵
PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 444 -ip 444
1⤵
PID:4272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 444 -ip 444
1⤵
PID:3588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 444 -ip 444
1⤵
PID:4376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 444 -ip 444
1⤵
PID:3104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 444 -ip 444
1⤵
PID:3924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 444 -ip 444
1⤵
PID:2980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 444 -ip 444
1⤵
PID:748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 444 -ip 444
1⤵
PID:2972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 444 -ip 444
1⤵
PID:3952

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\JL3S1NU9\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/444-1-0x00000000027F0000-0x00000000028F0000-memory.dmp

Filesize
1024KB

Download
memory/444-2-0x00000000042D0000-0x000000000430B000-memory.dmp

Filesize
236KB

Download
memory/444-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/444-4-0x00000000027F0000-0x00000000028F0000-memory.dmp

Filesize
1024KB

Download
memory/444-5-0x00000000042D0000-0x000000000430B000-memory.dmp

Filesize
236KB

Download
memory/444-7-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/444-6-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/444-12-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/444-19-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/444-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/444-35-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads