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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

pid	pid_target	Process	procid_target
1720	1224	WerFault.exe	82
4124	1224	WerFault.exe	82
2172	1224	WerFault.exe	82
3748	1224	WerFault.exe	82
5100	1224	WerFault.exe	82
4672	1224	WerFault.exe	82
3564	1224	WerFault.exe	82
3300	1224	WerFault.exe	82
4432	1224	WerFault.exe	82

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	bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.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
1480	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1480	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 2148	1224	bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe	111
PID 1224 wrote to memory of 2148	1224	bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe	111
PID 1224 wrote to memory of 2148	1224	bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe	111
PID 2148 wrote to memory of 1480	2148	cmd.exe	115
PID 2148 wrote to memory of 1480	2148	cmd.exe	115
PID 2148 wrote to memory of 1480	2148	cmd.exe	115

C:\Users\Admin\AppData\Local\Temp\bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe
"C:\Users\Admin\AppData\Local\Temp\bf0c7be4aadb86b7edc3bb943e3e4c266388e5cd0c25f5159035aae25512162c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 740
  2⤵
  - Program crash
  PID:1720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 748
  2⤵
  - Program crash
  PID:4124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 812
  2⤵
  - Program crash
  PID:2172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 836
  2⤵
  - Program crash
  PID:3748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 904
  2⤵
  - Program crash
  PID:5100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 908
  2⤵
  - Program crash
  PID:4672
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 1064
  2⤵
  - Program crash
  PID:3564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 1340
  2⤵
  - Program crash
  PID:3300
- 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:2148
- - 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:1480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 1372
  2⤵
  - Program crash
  PID:4432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1224 -ip 1224
1⤵
PID:3808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1224 -ip 1224
1⤵
PID:1788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1224 -ip 1224
1⤵
PID:4448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1224 -ip 1224
1⤵
PID:4240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1224 -ip 1224
1⤵
PID:3508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1224 -ip 1224
1⤵
PID:1588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1224 -ip 1224
1⤵
PID:1888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1224 -ip 1224
1⤵
PID:3068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1224 -ip 1224
1⤵
PID:4416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\3GJVVK7B\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1224-1-0x0000000002600000-0x0000000002700000-memory.dmp

Filesize
1024KB

Download
memory/1224-2-0x00000000041E0000-0x000000000420D000-memory.dmp

Filesize
180KB

Download
memory/1224-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1224-8-0x0000000002600000-0x0000000002700000-memory.dmp

Filesize
1024KB

Download
memory/1224-11-0x00000000041E0000-0x000000000420D000-memory.dmp

Filesize
180KB

Download
memory/1224-10-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/1224-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1224-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1224-21-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download

Analysis

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