gcleaner | bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c

General

Target

bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe
Size

422KB
MD5

9de5bc01185d8d932970172bfbc23b6e
SHA1

036651752b3dbeb1464bfe2552af921b5d150a07
SHA256

bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c
SHA512

051962dece9db14b3b714904f365ff4a29f97158aebb50085d26dbd19a2c26a1745a47f11f0a22cfae8a3b667d06af2ba434bb01e26f0f980dc66da3a84a5636
SSDEEP

6144:FPY1SX+xv/QjGWmYqXiNSb5jzFUrBiJU0X4FbaqqLsEqydUXD+PSHP6B:i17/0gMNSNjzFQiC0XVxLsEqxXxHi

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

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
1676	2032	WerFault.exe	79
1664	2032	WerFault.exe	79
2884	2032	WerFault.exe	79
1992	2032	WerFault.exe	79
4040	2032	WerFault.exe	79
4136	2032	WerFault.exe	79
2120	2032	WerFault.exe	79
5116	2032	WerFault.exe	79

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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1340	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1340	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 4240	2032	bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe	97
PID 2032 wrote to memory of 4240	2032	bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe	97
PID 2032 wrote to memory of 4240	2032	bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe	97
PID 4240 wrote to memory of 1340	4240	cmd.exe	101
PID 4240 wrote to memory of 1340	4240	cmd.exe	101
PID 4240 wrote to memory of 1340	4240	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe
"C:\Users\Admin\AppData\Local\Temp\bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 772
  2⤵
  - Program crash
  PID:1676
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 792
  2⤵
  - Program crash
  PID:1664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 828
  2⤵
  - Program crash
  PID:2884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 864
  2⤵
  - Program crash
  PID:1992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 952
  2⤵
  - Program crash
  PID:4040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 1080
  2⤵
  - Program crash
  PID:4136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 1428
  2⤵
  - Program crash
  PID:2120
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4240
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1340
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 1336
  2⤵
  - Program crash
  PID:5116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2032 -ip 2032
1⤵
PID:4712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2032 -ip 2032
1⤵
PID:1296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 2032 -ip 2032
1⤵
PID:3032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2032 -ip 2032
1⤵
PID:776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2032 -ip 2032
1⤵
PID:2880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2032 -ip 2032
1⤵
PID:1544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2032 -ip 2032
1⤵
PID:4124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2032 -ip 2032
1⤵
PID:1500

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\YEP4MMSB\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2032-1-0x0000000002610000-0x0000000002710000-memory.dmp

Filesize
1024KB

Download
memory/2032-2-0x0000000004300000-0x000000000432D000-memory.dmp

Filesize
180KB

Download
memory/2032-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2032-8-0x0000000002610000-0x0000000002710000-memory.dmp

Filesize
1024KB

Download
memory/2032-10-0x0000000004300000-0x000000000432D000-memory.dmp

Filesize
180KB

Download
memory/2032-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2032-11-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/2032-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2032-21-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download

Analysis

Sharing