gcleaner | c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92

General

Target

file.exe
Size

423KB
MD5

1e574c803a9a0fa1d042b3aeff1cb2b8
SHA1

9c0f34945f89aa5c2a8db2c9269d507e17e09ede
SHA256

c886b2aa58d852a95d3e9e1f68ba7913278ac3fa31cde2b4947e93e6f751ad92
SHA512

6d1a82469a29f3a309054ebd3d55f033cd9fbe5391b9347e7be901ef6e0672fae29c845e2e9de383e1420653ee25e77ec413810e394fb3ab040a6a417d03a5fe
SSDEEP

6144:m92HcDLKsEmssotEup5AfWJXQJSFUK07gOR:mMHcDLDnssotbqfwdFQJR

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	file.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
2312	3012	WerFault.exe	83
1676	3012	WerFault.exe	83
2004	3012	WerFault.exe	83
2096	3012	WerFault.exe	83
2116	3012	WerFault.exe	83
4508	3012	WerFault.exe	83
1060	3012	WerFault.exe	83
2016	3012	WerFault.exe	83
532	3012	WerFault.exe	83

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	file.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
3968	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3968	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 692	3012	file.exe	111
PID 3012 wrote to memory of 692	3012	file.exe	111
PID 3012 wrote to memory of 692	3012	file.exe	111
PID 692 wrote to memory of 3968	692	cmd.exe	115
PID 692 wrote to memory of 3968	692	cmd.exe	115
PID 692 wrote to memory of 3968	692	cmd.exe	115

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 740
  2⤵
  - Program crash
  PID:2312
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 776
  2⤵
  - Program crash
  PID:1676
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 776
  2⤵
  - Program crash
  PID:2004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 812
  2⤵
  - Program crash
  PID:2096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 904
  2⤵
  - Program crash
  PID:2116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 952
  2⤵
  - Program crash
  PID:4508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 1124
  2⤵
  - Program crash
  PID:1060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 1436
  2⤵
  - Program crash
  PID:2016
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:692
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 1476
  2⤵
  - Program crash
  PID:532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 3012 -ip 3012
1⤵
PID:3592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3012 -ip 3012
1⤵
PID:840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3012 -ip 3012
1⤵
PID:4980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3012 -ip 3012
1⤵
PID:872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3012 -ip 3012
1⤵
PID:2924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3012 -ip 3012
1⤵
PID:4036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3012 -ip 3012
1⤵
PID:2696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3012 -ip 3012
1⤵
PID:3904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3012 -ip 3012
1⤵
PID:1504

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\NMN7D09E\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3012-1-0x0000000000860000-0x0000000000960000-memory.dmp

Filesize
1024KB

Download
memory/3012-2-0x0000000002200000-0x000000000222D000-memory.dmp

Filesize
180KB

Download
memory/3012-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3012-8-0x0000000000860000-0x0000000000960000-memory.dmp

Filesize
1024KB

Download
memory/3012-9-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/3012-11-0x0000000002200000-0x000000000222D000-memory.dmp

Filesize
180KB

Download
memory/3012-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3012-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3012-21-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download

Analysis

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