gcleaner | b553548c5a80984ea755872ee75d300517091a5cf7c5c88f922d2880a8edc7fe

General

Target

621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe
Size

292KB
MD5

2ecec283adcd319326f271ed5a79638a
SHA1

e66e5423dd5855fcb95c6f813cc05e23004b5e1f
SHA256

621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779
SHA512

ff820293d62f6633e2bbaf53c757ec1d6bf5907057db86ce31c1c6f11b2e55af507aa1464dae05c4abc43fb0f655d1a175465251e104c39c0b0b7928c9452fe2
SSDEEP

6144:r1o2tWGS1EyPyJdk/ZQORtHV7qJnj8Zw8QN:raAWgyPGd+iJ4K8Q

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

C2

45.12.253.56

45.12.253.72

45.12.253.98

45.12.253.75

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

Processes:

621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
4384	4608	WerFault.exe	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe
3380	4608	WerFault.exe	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe
4604	4608	WerFault.exe	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe
4408	4608	WerFault.exe	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe
4732	4608	WerFault.exe	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe
4920	4608	WerFault.exe	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe
3460	4608	WerFault.exe	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe
4048	4608	WerFault.exe	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe
2848	4608	WerFault.exe	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3592 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 3592 taskkill.exe

pid	process
3592	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	3592	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.execmd.exe

description	pid	process	target process
PID 4608 wrote to memory of 2860	4608	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe	cmd.exe
PID 4608 wrote to memory of 2860	4608	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe	cmd.exe
PID 4608 wrote to memory of 2860	4608	621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe	cmd.exe
PID 2860 wrote to memory of 3592	2860	cmd.exe	taskkill.exe
PID 2860 wrote to memory of 3592	2860	cmd.exe	taskkill.exe
PID 2860 wrote to memory of 3592	2860	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe
"C:\Users\Admin\AppData\Local\Temp\621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 456
  2⤵
  - Program crash
  PID:4384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 760
  2⤵
  - Program crash
  PID:3380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 776
  2⤵
  - Program crash
  PID:4604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 776
  2⤵
  - Program crash
  PID:4408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 840
  2⤵
  - Program crash
  PID:4732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 928
  2⤵
  - Program crash
  PID:4920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 936
  2⤵
  - Program crash
  PID:3460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 1360
  2⤵
  - Program crash
  PID:4048
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2860
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "621f05c3a5bc27def35adf4d0503b2f5019db2f2b72a0452c9a14850c4495779.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 512
  2⤵
  - Program crash
  PID:2848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4608 -ip 4608
1⤵
PID:1660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4608 -ip 4608
1⤵
PID:1452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4608 -ip 4608
1⤵
PID:896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 400 -p 4608 -ip 4608
1⤵
PID:3408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4608 -ip 4608
1⤵
PID:4740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4608 -ip 4608
1⤵
PID:2332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4608 -ip 4608
1⤵
PID:3124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4608 -ip 4608
1⤵
PID:4132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4608 -ip 4608
1⤵
PID:1488

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4608-134-0x0000000000700000-0x0000000000740000-memory.dmp

Filesize
256KB

Download
memory/4608-135-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4608-139-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads