gcleaner | efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a

General

Target

efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a.exe
Size

4KB
MD5

ddc9229a87f36e9d555ddae1c8d4ac09
SHA1

e902d5ab723fa81913dd73999da9778781647c28
SHA256

efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a
SHA512

08b5ad94168bf90bae2f2917fde1b2a36650845fdcb23881d76ddddae73359fbd774c92083ba03a84083c48d4922afb339c637d49dfa67fbf9eb95b3bf86baa6
SSDEEP

48:66sn7l2zMdoHSe0rHNMMb9Y7VxCioXsTfxZsFtow/ljhFvCFipfbNtm:PYqX9VxCJ8U/3F5zNt

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
Executes dropped EXE 1 IoCs

Processes:

tmp57A5.tmp.exe

pid process

1460 tmp57A5.tmp.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1460	tmp57A5.tmp.exe

Program crash 9 IoCs

Processes:

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

pid	pid_target	process	target process
1680	1460	WerFault.exe	tmp57A5.tmp.exe
3888	1460	WerFault.exe	tmp57A5.tmp.exe
828	1460	WerFault.exe	tmp57A5.tmp.exe
520	1460	WerFault.exe	tmp57A5.tmp.exe
4760	1460	WerFault.exe	tmp57A5.tmp.exe
4140	1460	WerFault.exe	tmp57A5.tmp.exe
3008	1460	WerFault.exe	tmp57A5.tmp.exe
5032	1460	WerFault.exe	tmp57A5.tmp.exe
3952	1460	WerFault.exe	tmp57A5.tmp.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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:

tmp57A5.tmp.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp57A5.tmp.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a.exe

description pid process

Token: SeDebugPrivilege 3152 efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmp57A5.tmp.exe

description	pid	process
Token: SeDebugPrivilege	3152	efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a.exe

description	pid	process	target process
PID 3152 wrote to memory of 1460	3152	efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a.exe	tmp57A5.tmp.exe
PID 3152 wrote to memory of 1460	3152	efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a.exe	tmp57A5.tmp.exe
PID 3152 wrote to memory of 1460	3152	efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a.exe	tmp57A5.tmp.exe

C:\Users\Admin\AppData\Local\Temp\efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a.exe
"C:\Users\Admin\AppData\Local\Temp\efec912465df5c55b4764e0277aa4c4c549e612b4f3c5abf77aaec647729f78a.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3152

C:\Users\Admin\AppData\Local\Temp\tmp57A5.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp57A5.tmp.exe"
2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 524
3⤵
- Program crash
PID:1680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 788
3⤵
- Program crash
PID:3888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 808
3⤵
- Program crash
PID:828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 872
3⤵
- Program crash
PID:520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 972
3⤵
- Program crash
PID:4760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 1016
3⤵
- Program crash
PID:4140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 1140
3⤵
- Program crash
PID:3008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 1180
3⤵
- Program crash
PID:5032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 1216
3⤵
- Program crash
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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\TBE3XFIK\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp57A5.tmp.exe

Filesize
400KB

MD5
6949e0bc31c46cabcb6b04d37a0e6663

SHA1
4f85105ca0b552d9ad2a6044c1f59ad5ff7f11d2

SHA256
655accda78f0ad95bbb0fd87ccffd7911d2f388dfdefced4c15b16d9ea893ebc

SHA512
abc6bdaca641a0d66e99c704dc84d95551b3a96d2ecc7beda6a62f1b9afcf5c6b9a81330c4734013bc7643ce1c4aaa4b317fbb64aa2109a1d8ecca2f2a0ad692

Download Submit
memory/1460-28-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1460-23-0x0000000002580000-0x0000000002680000-memory.dmp

Filesize
1024KB

Download
memory/1460-42-0x0000000000400000-0x000000000247C000-memory.dmp

Filesize
32.5MB

Download
memory/1460-11-0x0000000002580000-0x0000000002680000-memory.dmp

Filesize
1024KB

Download
memory/1460-12-0x0000000002540000-0x000000000257B000-memory.dmp

Filesize
236KB

Download
memory/1460-13-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1460-18-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1460-39-0x0000000000400000-0x000000000247C000-memory.dmp

Filesize
32.5MB

Download
memory/1460-25-0x0000000002540000-0x000000000257B000-memory.dmp

Filesize
236KB

Download
memory/1460-27-0x0000000000400000-0x000000000247C000-memory.dmp

Filesize
32.5MB

Download
memory/3152-0-0x00000000003A0000-0x00000000003A8000-memory.dmp

Filesize
32KB

Download
memory/3152-1-0x00007FFC012B3000-0x00007FFC012B4000-memory.dmp

Filesize
4KB

Download
memory/3152-2-0x00007FFC012B0000-0x00007FFC01C9C000-memory.dmp

Filesize
9.9MB

Download
memory/3152-9-0x00007FFC012B0000-0x00007FFC01C9C000-memory.dmp

Filesize
9.9MB

Download

Analysis

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