gcleaner | f008899dac52a14491523f997279392bfe562bcd17aa478313e1b627e43d682d

General

Target

file.exe
Size

303KB
MD5

8fe039aa5103fcbc29712cce73c35267
SHA1

c12df2f751445a2aa03ee15b6c0275765ce70285
SHA256

f008899dac52a14491523f997279392bfe562bcd17aa478313e1b627e43d682d
SHA512

d06728b6f4f7dfe6a9663fb3c0c6200f6699e6ed67d89d2adebe1560791fb82500cb333ffc94294dafc73d55af8bf706967870f8291edf352989277a30f22408
SSDEEP

6144:vLJkYRKuTCz7dBN2dZtaK6oxHdnUFYc5AR:vdkOd+3J27taK3x9bR

Score

10^/10

gcleaner discovery loader spyware stealer

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
Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
2716	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	LdI3keoXyU.exe

Loads dropped DLL 1 IoCs

pid	Process
1332	file.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2824 set thread context of 2912	2824	LdI3keoXyU.exe	33

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	LdI3keoXyU.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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
1900	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2912	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2912	RegAsm.exe
Token: SeBackupPrivilege	2912	RegAsm.exe
Token: SeSecurityPrivilege	2912	RegAsm.exe
Token: SeSecurityPrivilege	2912	RegAsm.exe
Token: SeSecurityPrivilege	2912	RegAsm.exe
Token: SeSecurityPrivilege	2912	RegAsm.exe
Token: SeDebugPrivilege	1900	taskkill.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1332 wrote to memory of 2824	1332	file.exe	30
PID 1332 wrote to memory of 2824	1332	file.exe	30
PID 1332 wrote to memory of 2824	1332	file.exe	30
PID 1332 wrote to memory of 2824	1332	file.exe	30
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 2824 wrote to memory of 2912	2824	LdI3keoXyU.exe	33
PID 1332 wrote to memory of 2716	1332	file.exe	35
PID 1332 wrote to memory of 2716	1332	file.exe	35
PID 1332 wrote to memory of 2716	1332	file.exe	35
PID 1332 wrote to memory of 2716	1332	file.exe	35
PID 2716 wrote to memory of 1900	2716	cmd.exe	37
PID 2716 wrote to memory of 1900	2716	cmd.exe	37
PID 2716 wrote to memory of 1900	2716	cmd.exe	37
PID 2716 wrote to memory of 1900	2716	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1332
- C:\Users\Admin\AppData\Roaming\xKKRCv5ayc\LdI3keoXyU.exe
  "C:\Users\Admin\AppData\Roaming\xKKRCv5ayc\LdI3keoXyU.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2912
- 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⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2716
- - 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:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Roaming\xKKRCv5ayc\LdI3keoXyU.exe

Filesize
548KB

MD5
e40ee86be094e6b80732386085afc264

SHA1
0902141032c7cdf206a4d5962dc395491fd6b0f0

SHA256
d06c6553e51e9e86317d20ba3a735365585093f3be5ad55ea5447c2ede093561

SHA512
fe7cf3b7394caef7e66b7fbf8c71fcfa8c6f8f6229a5a83028aa0e70b7685ed33c3e03f9ace5d4d6ed821c5e0fce2afb60874df41007d3815584cd1f6ef00028

Download Submit
memory/1332-31-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1332-2-0x0000000000250000-0x000000000027D000-memory.dmp

Filesize
180KB

Download
memory/1332-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1332-28-0x0000000000400000-0x0000000000547000-memory.dmp

Filesize
1.3MB

Download
memory/1332-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/1332-29-0x0000000000250000-0x000000000027D000-memory.dmp

Filesize
180KB

Download
memory/1332-30-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/2824-13-0x0000000000140000-0x00000000001D0000-memory.dmp

Filesize
576KB

Download
memory/2824-23-0x0000000073FD0000-0x00000000746BE000-memory.dmp

Filesize
6.9MB

Download
memory/2824-12-0x0000000073FDE000-0x0000000073FDF000-memory.dmp

Filesize
4KB

Download
memory/2824-32-0x0000000073FD0000-0x00000000746BE000-memory.dmp

Filesize
6.9MB

Download
memory/2912-18-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2912-17-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2912-16-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2912-27-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2912-25-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2912-19-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2912-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2912-22-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download

Analysis

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