gcleaner | a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72da

General

Target

a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.exe
Size

411KB
MD5

fa48c6a29d8b7e3c9bf78a4d1c9b1e00
SHA1

bcb0cef9549b254703dce860fdcfcc5e1b608426
SHA256

a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72da
SHA512

f310fc07306741c99c50432556d8bc649826e0bfaa8d66d3033ac0118c2e81ac7afa77772d102d6466a74522348228a6c209d67c7b5ef8e061817e2ab9097afe
SSDEEP

6144:bgsJ5cQj1EYGXWnmudtwohZc8Q8SAZkvoXrZKCckuesuizduJ8YYyifT1:8k5cQj1EYG9E3c8SmE2we5izd11L

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
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2732 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2732	cmd.exe

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

Processes:

a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.execmd.exetaskkill.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.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

Processes:

taskkill.exe

pid process

2548 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2548 taskkill.exe

pid	process
2548	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	2548	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.execmd.exe

description	pid	process	target process
PID 2280 wrote to memory of 2732	2280	a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.exe	cmd.exe
PID 2280 wrote to memory of 2732	2280	a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.exe	cmd.exe
PID 2280 wrote to memory of 2732	2280	a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.exe	cmd.exe
PID 2280 wrote to memory of 2732	2280	a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.exe	cmd.exe
PID 2732 wrote to memory of 2548	2732	cmd.exe	taskkill.exe
PID 2732 wrote to memory of 2548	2732	cmd.exe	taskkill.exe
PID 2732 wrote to memory of 2548	2732	cmd.exe	taskkill.exe
PID 2732 wrote to memory of 2548	2732	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.exe
"C:\Users\Admin\AppData\Local\Temp\a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.exe" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2732
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "a72788dbcd9ddd614e4987d4cb66edde23fac62abe3e16caff55740470ec72daN.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2548

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\Temporary Internet Files\Content.IE5\NQU8S4LJ\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2280-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/2280-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2280-2-0x0000000000220000-0x000000000024D000-memory.dmp

Filesize
180KB

Download
memory/2280-7-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/2280-9-0x0000000000220000-0x000000000024D000-memory.dmp

Filesize
180KB

Download
memory/2280-11-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/2280-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2280-21-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/2280-23-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/2280-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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