gcleaner | a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529

General

Target

a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe
Size

293KB
MD5

c5a32e576a25c81e53f6b009815147e2
SHA1

04c91b37cf00bfa518823305f4fb86dd4814d91c
SHA256

a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529
SHA512

ed4d89634634a6c356739800558b3a47378fa5b5ac9169c573f9df3d94e5d606922fcdf0c6f372a7263ed6899afc99fc9deb5292359471c7c8eabdb0c309ade2
SSDEEP

3072:sxDml5hUlhgPr1R9nK6czues7jKGRsdqjIyCgzNmPAp5TQ+CoN7UH+jIFBxqXYUl:sxKlj1K6czues7REOIU6+Fac+qI

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

3064 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3064	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:

taskkill.exea4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

2768 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2768 taskkill.exe

pid	process
2768	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	2768	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.execmd.exe

description	pid	process	target process
PID 272 wrote to memory of 3064	272	a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe	cmd.exe
PID 272 wrote to memory of 3064	272	a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe	cmd.exe
PID 272 wrote to memory of 3064	272	a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe	cmd.exe
PID 272 wrote to memory of 3064	272	a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe	cmd.exe
PID 3064 wrote to memory of 2768	3064	cmd.exe	taskkill.exe
PID 3064 wrote to memory of 2768	3064	cmd.exe	taskkill.exe
PID 3064 wrote to memory of 2768	3064	cmd.exe	taskkill.exe
PID 3064 wrote to memory of 2768	3064	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe
"C:\Users\Admin\AppData\Local\Temp\a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:272
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3064
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "a4ee512267097a65c493167cb3ae60aa5d4999df926ff2df4bce5f6220867529.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2768

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\VUUZQMCA\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/272-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/272-2-0x00000000001B0000-0x00000000001DD000-memory.dmp

Filesize
180KB

Download
memory/272-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/272-7-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/272-10-0x00000000001B0000-0x00000000001DD000-memory.dmp

Filesize
180KB

Download
memory/272-9-0x0000000000400000-0x0000000002B4C000-memory.dmp

Filesize
39.3MB

Download
memory/272-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/272-23-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/272-22-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/272-21-0x0000000000400000-0x0000000002B4C000-memory.dmp

Filesize
39.3MB

Download

Analysis

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