gcleaner | 82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9

General

Target

82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9.exe
Size

295KB
MD5

8aa7782a85c4d712bb398c37406c7b1a
SHA1

d8ae96b16609c4292b6f86de24a67bd1fb062fa2
SHA256

82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9
SHA512

417be55b827fccfe81a4edeef6f590cf668184cd54267a0a903b9660d37343d7491b02de4fe7887c0705341209605d12c4fcb96d1ed56d9549ebfd945f6da28c
SSDEEP

6144:q/0GfXaB6Mn32ftAjf0zGt5I3HXeN0dkwpcpuQTdJlXndB1y:q5Xk6Mn3oCbrj5aqphdJlNBk

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

System Information Discovery
T1082

Program crash 7 IoCs

pid	pid_target	Process	procid_target
876	2820	WerFault.exe	79
4592	2820	WerFault.exe	79
3944	2820	WerFault.exe	79
2432	2820	WerFault.exe	79
1796	2820	WerFault.exe	79
2424	2820	WerFault.exe	79
1496	2820	WerFault.exe	79

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	82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9.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
4128	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4128	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 4420	2820	82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9.exe	97
PID 2820 wrote to memory of 4420	2820	82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9.exe	97
PID 2820 wrote to memory of 4420	2820	82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9.exe	97
PID 4420 wrote to memory of 4128	4420	cmd.exe	99
PID 4420 wrote to memory of 4128	4420	cmd.exe	99
PID 4420 wrote to memory of 4128	4420	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9.exe
"C:\Users\Admin\AppData\Local\Temp\82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 772
  2⤵
  - Program crash
  PID:876
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 812
  2⤵
  - Program crash
  PID:4592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 832
  2⤵
  - Program crash
  PID:3944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 864
  2⤵
  - Program crash
  PID:2432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 952
  2⤵
  - Program crash
  PID:1796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 1076
  2⤵
  - Program crash
  PID:2424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 1612
  2⤵
  - Program crash
  PID:1496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4420
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "82c8077fffc1dae58cc700542bd40e71a69bacff93f6d85c65eb583a6e42bda9.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2820 -ip 2820
1⤵
PID:2932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2820 -ip 2820
1⤵
PID:236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2820 -ip 2820
1⤵
PID:2260

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2820 -ip 2820
1⤵
PID:636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2820 -ip 2820
1⤵
PID:112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2820 -ip 2820
1⤵
PID:4112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2820 -ip 2820
1⤵
PID:984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\IA6V40OY\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2820-1-0x0000000002E30000-0x0000000002F30000-memory.dmp

Filesize
1024KB

Download
memory/2820-2-0x00000000049D0000-0x00000000049FD000-memory.dmp

Filesize
180KB

Download
memory/2820-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2820-6-0x0000000002E30000-0x0000000002F30000-memory.dmp

Filesize
1024KB

Download
memory/2820-9-0x00000000049D0000-0x00000000049FD000-memory.dmp

Filesize
180KB

Download
memory/2820-8-0x0000000000400000-0x0000000002B6A000-memory.dmp

Filesize
39.4MB

Download
memory/2820-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2820-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2820-23-0x0000000000400000-0x0000000002B6A000-memory.dmp

Filesize
39.4MB

Download

Analysis

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