gcleaner | 6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290

General

Target

6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe
Size

404KB
MD5

82cd197e01211f45bde6d38da11df156
SHA1

e4f96f962a5e602b1f1834f0429edbc86c4b2b77
SHA256

6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290
SHA512

f938e33b0d4ac1d23c867b7f5eef7bdd488f6398fdfd009a1f6b3802296d4dacfb04b4471c9616877bc039112129cdfef4b1b61bf27b3ffb4d689379201d642e
SSDEEP

6144:XjXxl562Hm3Gwbb/6rtg+O4jjATQwotWcWVHkzDLRc:XTxlgDGq/uNPwotWNkz5

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe

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
3404	764	WerFault.exe	83
960	764	WerFault.exe	83
4512	764	WerFault.exe	83
2972	764	WerFault.exe	83
4824	764	WerFault.exe	83
4008	764	WerFault.exe	83
716	764	WerFault.exe	83
2144	764	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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4296	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4296	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 764 wrote to memory of 692	764	6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe	112
PID 764 wrote to memory of 692	764	6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe	112
PID 764 wrote to memory of 692	764	6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe	112
PID 692 wrote to memory of 4296	692	cmd.exe	114
PID 692 wrote to memory of 4296	692	cmd.exe	114
PID 692 wrote to memory of 4296	692	cmd.exe	114

C:\Users\Admin\AppData\Local\Temp\6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe
"C:\Users\Admin\AppData\Local\Temp\6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 740
  2⤵
  - Program crash
  PID:3404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 780
  2⤵
  - Program crash
  PID:960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 780
  2⤵
  - Program crash
  PID:4512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 812
  2⤵
  - Program crash
  PID:2972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 912
  2⤵
  - Program crash
  PID:4824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 976
  2⤵
  - Program crash
  PID:4008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 1032
  2⤵
  - Program crash
  PID:716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 1440
  2⤵
  - Program crash
  PID:2144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:692
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "6663965f684a51e116a05bb63c0706851130f59631507a0f3f4959588fb54290.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 764 -ip 764
1⤵
PID:2172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 764 -ip 764
1⤵
PID:404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 764 -ip 764
1⤵
PID:2440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 764 -ip 764
1⤵
PID:3260

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 764 -ip 764
1⤵
PID:652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 764 -ip 764
1⤵
PID:1968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 764 -ip 764
1⤵
PID:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 764 -ip 764
1⤵
PID:3384

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\951G8FD5\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/764-1-0x00000000007E0000-0x00000000008E0000-memory.dmp

Filesize
1024KB

Download
memory/764-2-0x0000000002340000-0x000000000236D000-memory.dmp

Filesize
180KB

Download
memory/764-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/764-8-0x00000000007E0000-0x00000000008E0000-memory.dmp

Filesize
1024KB

Download
memory/764-11-0x0000000002340000-0x000000000236D000-memory.dmp

Filesize
180KB

Download
memory/764-10-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/764-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/764-21-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/764-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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