gcleaner | 6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985

General

Target

6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985.exe
Size

296KB
MD5

d175ca1ff19e5499a3fe37ed837a7edf
SHA1

306fb745f2600f4bf27de8cddb0984f72bc0ec68
SHA256

6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985
SHA512

9bfe0beaca927468a4a96fe915536e605c52777790f1ed69295ecaa5474f4fe7622c430824fc6c5f7473389d5ee02355ad56494952ca92907df366dd9fb61dc6
SSDEEP

6144:ohDh1RiGbSdRR0m1jzcRTS73AxOwnRW6Z/Mv50Vdh1+Q:oNh1k4SdRR0m1jzcV+qA6JVdz

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 8 IoCs

pid	pid_target	Process	procid_target
3428	4864	WerFault.exe	73
488	4864	WerFault.exe	73
1972	4864	WerFault.exe	73
2084	4864	WerFault.exe	73
492	4864	WerFault.exe	73
4928	4864	WerFault.exe	73
4404	4864	WerFault.exe	73
2600	4864	WerFault.exe	73

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	6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985.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
4888	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4888	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4864 wrote to memory of 1532	4864	6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985.exe	83
PID 4864 wrote to memory of 1532	4864	6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985.exe	83
PID 4864 wrote to memory of 1532	4864	6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985.exe	83
PID 1532 wrote to memory of 4888	1532	cmd.exe	85
PID 1532 wrote to memory of 4888	1532	cmd.exe	85
PID 1532 wrote to memory of 4888	1532	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985.exe
"C:\Users\Admin\AppData\Local\Temp\6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 764
  2⤵
  - Program crash
  PID:3428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 748
  2⤵
  - Program crash
  PID:488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 844
  2⤵
  - Program crash
  PID:1972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 948
  2⤵
  - Program crash
  PID:2084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 916
  2⤵
  - Program crash
  PID:492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 1096
  2⤵
  - Program crash
  PID:4928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 1128
  2⤵
  - Program crash
  PID:4404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 1268
  2⤵
  - Program crash
  PID:2600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1532
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "6fdfd01c94e18b21a5be17437c1ecc885398e9e7e03c33feee1a7ab0bd589985.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4888

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\E49JWOHD\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4864-2-0x0000000002060000-0x000000000208D000-memory.dmp

Filesize
180KB

Download
memory/4864-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/4864-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4864-8-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/4864-10-0x0000000002060000-0x000000000208D000-memory.dmp

Filesize
180KB

Download
memory/4864-12-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4864-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4864-21-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4864-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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