gcleaner | 6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98

General

Target

6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe
Size

402KB
MD5

e34d3e95a52de40e5a38ed111876cddf
SHA1

91beb0a96cd84bdf1deb0c14e39521a54f0c0110
SHA256

6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98
SHA512

358f409cd3b36ccce2e8600c400b8cbefa7ad5961e1b77913ac78440880a73b76fe0282752bf5831ee3de61f9d0993db430faff26b22c129fd7d54b82956b808
SSDEEP

6144:tdyq4ShFUO3qBgAA/LWeqpna/nfLqncpD4Pfb8NbvL:tkq9hFUO3qOAaEpOnfLqnc+PfgNbT

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
4252	4528	WerFault.exe	80
4612	4528	WerFault.exe	80
332	4528	WerFault.exe	80
4936	4528	WerFault.exe	80
4024	4528	WerFault.exe	80
2064	4528	WerFault.exe	80
568	4528	WerFault.exe	80
2508	4528	WerFault.exe	80
536	4528	WerFault.exe	80
784	4528	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
772	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	772	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4528 wrote to memory of 5100	4528	6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe	101
PID 4528 wrote to memory of 5100	4528	6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe	101
PID 4528 wrote to memory of 5100	4528	6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe	101
PID 5100 wrote to memory of 772	5100	cmd.exe	105
PID 5100 wrote to memory of 772	5100	cmd.exe	105
PID 5100 wrote to memory of 772	5100	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe
"C:\Users\Admin\AppData\Local\Temp\6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 476
  2⤵
  - Program crash
  PID:4252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 796
  2⤵
  - Program crash
  PID:4612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 836
  2⤵
  - Program crash
  PID:332
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 876
  2⤵
  - Program crash
  PID:4936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 904
  2⤵
  - Program crash
  PID:4024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 976
  2⤵
  - Program crash
  PID:2064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 984
  2⤵
  - Program crash
  PID:568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 1496
  2⤵
  - Program crash
  PID:2508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 1744
  2⤵
  - Program crash
  PID:536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5100
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "6fc84e495a4d76e5da5da4d30a461029c0a144e4d3a47727315f94be29ef2c98.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 488
  2⤵
  - Program crash
  PID:784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4528 -ip 4528
1⤵
PID:3548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4528 -ip 4528
1⤵
PID:1448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4528 -ip 4528
1⤵
PID:8

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4528 -ip 4528
1⤵
PID:2092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4528 -ip 4528
1⤵
PID:1092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4528 -ip 4528
1⤵
PID:3476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4528 -ip 4528
1⤵
PID:4088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4528 -ip 4528
1⤵
PID:2396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4528 -ip 4528
1⤵
PID:1312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4528 -ip 4528
1⤵
PID:3340

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\XKWRT8IT\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4528-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/4528-2-0x0000000002440000-0x000000000247C000-memory.dmp

Filesize
240KB

Download
memory/4528-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4528-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4528-13-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/4528-15-0x0000000002440000-0x000000000247C000-memory.dmp

Filesize
240KB

Download
memory/4528-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4528-16-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/4528-29-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/4528-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4528-35-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download

Analysis

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