gcleaner | 5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c

General

Target

5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c.exe
Size

404KB
MD5

7e4cd5ac994792c76609720a1c3554d1
SHA1

cdcfe2977755b0e187961b8b7a0b5a7ccc8f6b37
SHA256

5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c
SHA512

176e0b9fbed1bfe31e4eec20185fbd15477b2e55a4c2c5db6984fe990a9f0141c7e6b6275793433c02d354c0f727012815436ea4e3657a2526f4b78d04229521
SSDEEP

6144:tqvDsAIl9gAFveULtnmgqyDaFvs5davjN1TJBg3qEVE3c:tqLsAQ9B3tmvyD6s58rN1F+653

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
1292	3404	WerFault.exe	80
2788	3404	WerFault.exe	80
32	3404	WerFault.exe	80
4604	3404	WerFault.exe	80
696	3404	WerFault.exe	80
2008	3404	WerFault.exe	80
5004	3404	WerFault.exe	80
2180	3404	WerFault.exe	80
1912	3404	WerFault.exe	80
4892	3404	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	5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c.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
3444	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3444	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3404 wrote to memory of 2720	3404	5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c.exe	101
PID 3404 wrote to memory of 2720	3404	5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c.exe	101
PID 3404 wrote to memory of 2720	3404	5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c.exe	101
PID 2720 wrote to memory of 3444	2720	cmd.exe	105
PID 2720 wrote to memory of 3444	2720	cmd.exe	105
PID 2720 wrote to memory of 3444	2720	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c.exe
"C:\Users\Admin\AppData\Local\Temp\5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 476
  2⤵
  - Program crash
  PID:1292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 800
  2⤵
  - Program crash
  PID:2788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 836
  2⤵
  - Program crash
  PID:32
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 856
  2⤵
  - Program crash
  PID:4604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 884
  2⤵
  - Program crash
  PID:696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 976
  2⤵
  - Program crash
  PID:2008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 980
  2⤵
  - Program crash
  PID:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 1552
  2⤵
  - Program crash
  PID:2180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 1836
  2⤵
  - Program crash
  PID:1912
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "5dc00bf5bc7d303d81f0c86ab18ee44da6d04cc92f110f612d9c70fdf9c6cf9c.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 1804
  2⤵
  - Program crash
  PID:4892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3404 -ip 3404
1⤵
PID:3176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3404 -ip 3404
1⤵
PID:2072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3404 -ip 3404
1⤵
PID:3680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3404 -ip 3404
1⤵
PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3404 -ip 3404
1⤵
PID:2444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3404 -ip 3404
1⤵
PID:4916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3404 -ip 3404
1⤵
PID:2312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3404 -ip 3404
1⤵
PID:1456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3404 -ip 3404
1⤵
PID:2624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3404 -ip 3404
1⤵
PID:876

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/3404-1-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/3404-2-0x0000000002330000-0x000000000236C000-memory.dmp

Filesize
240KB

Download
memory/3404-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3404-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3404-12-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/3404-14-0x0000000002330000-0x000000000236C000-memory.dmp

Filesize
240KB

Download
memory/3404-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3404-16-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/3404-27-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/3404-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3404-35-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download

Analysis

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