gcleaner | 5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35

General

Target

5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.exe
Size

431KB
MD5

4e2ec0d83765c97981b5bc455cf3a846
SHA1

2df312fae2e5283e4ff921ade27c635b1ec02be5
SHA256

5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35
SHA512

4d15d34798a905e9a870e502c1a78fef00a2606042a8e3100b81345be6d9b95bec61db9a39ba56df6977a14749769938b6ae94f12bc2a801747a215dc57a8fec
SSDEEP

6144:wVe6a7Y5I8+Y+uPVE7JrMX3YurjXMIa/Q4bzM46lAqLT/mO+pUo4YDeOK+l8O:x6CYAYNPVBY88IJ4brJWT/y+o4Y/b

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.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
1604	4700	WerFault.exe	82
3464	4700	WerFault.exe	82
2816	4700	WerFault.exe	82
5084	4700	WerFault.exe	82
1136	4700	WerFault.exe	82
4604	4700	WerFault.exe	82
384	4700	WerFault.exe	82
68	4700	WerFault.exe	82
5004	4700	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	5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.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
936	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	936	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4700 wrote to memory of 2224	4700	5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.exe	111
PID 4700 wrote to memory of 2224	4700	5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.exe	111
PID 4700 wrote to memory of 2224	4700	5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.exe	111
PID 2224 wrote to memory of 936	2224	cmd.exe	115
PID 2224 wrote to memory of 936	2224	cmd.exe	115
PID 2224 wrote to memory of 936	2224	cmd.exe	115

C:\Users\Admin\AppData\Local\Temp\5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.exe
"C:\Users\Admin\AppData\Local\Temp\5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 740
  2⤵
  - Program crash
  PID:1604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 784
  2⤵
  - Program crash
  PID:3464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 784
  2⤵
  - Program crash
  PID:2816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 812
  2⤵
  - Program crash
  PID:5084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 904
  2⤵
  - Program crash
  PID:1136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 908
  2⤵
  - Program crash
  PID:4604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 1152
  2⤵
  - Program crash
  PID:384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 1416
  2⤵
  - Program crash
  PID:68
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2224
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "5882a88112a9dcef9b82dfc320172e4e269d22cd63f50470bbf7759ec9dadc35.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 1380
  2⤵
  - Program crash
  PID:5004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4700 -ip 4700
1⤵
PID:4476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4700 -ip 4700
1⤵
PID:2520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4700 -ip 4700
1⤵
PID:3368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4700 -ip 4700
1⤵
PID:1504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4700 -ip 4700
1⤵
PID:2996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4700 -ip 4700
1⤵
PID:2976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4700 -ip 4700
1⤵
PID:1688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4700 -ip 4700
1⤵
PID:2888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4700 -ip 4700
1⤵
PID:3196

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\B9AWTLKS\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4700-1-0x0000000002790000-0x0000000002890000-memory.dmp

Filesize
1024KB

Download
memory/4700-2-0x0000000002730000-0x000000000275D000-memory.dmp

Filesize
180KB

Download
memory/4700-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4700-8-0x0000000002790000-0x0000000002890000-memory.dmp

Filesize
1024KB

Download
memory/4700-11-0x0000000002730000-0x000000000275D000-memory.dmp

Filesize
180KB

Download
memory/4700-10-0x0000000000400000-0x0000000002485000-memory.dmp

Filesize
32.5MB

Download
memory/4700-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4700-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4700-21-0x0000000000400000-0x0000000002485000-memory.dmp

Filesize
32.5MB

Download

Analysis

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