gcleaner | c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771

General

Target

c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.exe
Size

282KB
MD5

9010eafd8de9808250fa411903e0f650
SHA1

413272f54a551b29fda7911695b9e0ebd68eb9db
SHA256

c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771
SHA512

e51f9064c1fc51aba4807f3576bc0547fa0a208cb716f88284db541062342e065f28ffa0f1735eb8689d3028071f3e4272ccb5009d7589a16e0e5c7a950a433f
SSDEEP

6144:ULgwg+KarBF18AJ2jwF3K655LTwVy03n:U0wg+KarH18AJb3PgVh3n

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	c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.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
3848	4476	WerFault.exe	81
3800	4476	WerFault.exe	81
5072	4476	WerFault.exe	81
4316	4476	WerFault.exe	81
2024	4476	WerFault.exe	81
3340	4476	WerFault.exe	81
2636	4476	WerFault.exe	81
1512	4476	WerFault.exe	81
2580	4476	WerFault.exe	81

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	c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.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
1172	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1172	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4476 wrote to memory of 4896	4476	c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.exe	106
PID 4476 wrote to memory of 4896	4476	c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.exe	106
PID 4476 wrote to memory of 4896	4476	c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.exe	106
PID 4896 wrote to memory of 1172	4896	cmd.exe	110
PID 4896 wrote to memory of 1172	4896	cmd.exe	110
PID 4896 wrote to memory of 1172	4896	cmd.exe	110

C:\Users\Admin\AppData\Local\Temp\c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.exe
"C:\Users\Admin\AppData\Local\Temp\c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4476
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 740
  2⤵
  - Program crash
  PID:3848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 748
  2⤵
  - Program crash
  PID:3800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 748
  2⤵
  - Program crash
  PID:5072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 772
  2⤵
  - Program crash
  PID:4316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 904
  2⤵
  - Program crash
  PID:2024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 984
  2⤵
  - Program crash
  PID:3340
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 1116
  2⤵
  - Program crash
  PID:2636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 1276
  2⤵
  - Program crash
  PID:1512
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4896
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "c3742ce15e7555c610350d84f0ec719257c8e050ff7e092215c28227df257771N.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 1440
  2⤵
  - Program crash
  PID:2580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4476 -ip 4476
1⤵
PID:5032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4476 -ip 4476
1⤵
PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4476 -ip 4476
1⤵
PID:4800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4476 -ip 4476
1⤵
PID:3124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4476 -ip 4476
1⤵
PID:1828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4476 -ip 4476
1⤵
PID:3280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4476 -ip 4476
1⤵
PID:2392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4476 -ip 4476
1⤵
PID:4480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4476 -ip 4476
1⤵
PID:4840

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/4476-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/4476-2-0x0000000002160000-0x000000000218D000-memory.dmp

Filesize
180KB

Download
memory/4476-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4476-8-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/4476-11-0x0000000002160000-0x000000000218D000-memory.dmp

Filesize
180KB

Download
memory/4476-10-0x0000000000400000-0x0000000000542000-memory.dmp

Filesize
1.3MB

Download
memory/4476-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4476-21-0x0000000000400000-0x0000000000542000-memory.dmp

Filesize
1.3MB

Download
memory/4476-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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