gcleaner | 8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea

General

Target

8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe
Size

292KB
MD5

f8ea94e5b721fe597d6efd5b301e2491
SHA1

a19bbd544f15d4113d8068ec258ce087391b7d4e
SHA256

8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea
SHA512

96f0dd2f73239d51297908e2f0bb8cd6605edfebaad56180ef8cdf7b6d734ed3ba1a60d64656e40207eb45f2d709d4335651121db2dbfda5936af074d3348ee9
SSDEEP

6144:KC5grVywxDnO/nU+qKOXSyZPsl7MhZlDMW:KC5gxxi/nU+qbZycZV

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
Downloads MZ/PE file

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1616 set thread context of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82

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 4 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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1452	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1452	taskkill.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1616 wrote to memory of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82
PID 1616 wrote to memory of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82
PID 1616 wrote to memory of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82
PID 1616 wrote to memory of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82
PID 1616 wrote to memory of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82
PID 1616 wrote to memory of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82
PID 1616 wrote to memory of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82
PID 1616 wrote to memory of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82
PID 1616 wrote to memory of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82
PID 1616 wrote to memory of 1900	1616	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	82
PID 1900 wrote to memory of 3588	1900	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	92
PID 1900 wrote to memory of 3588	1900	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	92
PID 1900 wrote to memory of 3588	1900	8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe	92
PID 3588 wrote to memory of 1452	3588	cmd.exe	94
PID 3588 wrote to memory of 1452	3588	cmd.exe	94
PID 3588 wrote to memory of 1452	3588	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe
"C:\Users\Admin\AppData\Local\Temp\8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1616
- C:\Users\Admin\AppData\Local\Temp\8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe
  "C:\Users\Admin\AppData\Local\Temp\8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1900
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im "8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3588
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im "8210a56df3dde9d1eaf5669eca7d25dd436b741e3a1fb63f1e6e2c6bd3181bea.exe" /f
      4⤵
      System Location Discovery: System Language Discovery
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1452

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\XKWRT8IT\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1616-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/1616-2-0x00000000022D0000-0x000000000230C000-memory.dmp

Filesize
240KB

Download
memory/1900-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1900-4-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1900-5-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1900-7-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1900-11-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1900-13-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1900-29-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1900-32-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1900-42-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

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