gcleaner | 1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486

General

Target

1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.exe
Size

321KB
MD5

85d728e853d379c0daacea6640cafba5
SHA1

2e942cab1c2ab630b3ba6657301ce29f933c6b36
SHA256

1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486
SHA512

e9adb3c4727c974f48aa096ed7917c6436940ac81811a710478635f9f1858aa8ab110de02aba3f7c9d37d5a589cec8af6ce829639bda3c22364b30f758fb75ad
SSDEEP

6144:Xfblfs3FsGvEIjzDp/c6z5ak0VERuQTdJNT8m:vbRs3Fs1IjztkygERhdJam

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

45.91.200.135

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.exe

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

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
2932	436	WerFault.exe	82
4152	436	WerFault.exe	82
2092	436	WerFault.exe	82
4580	436	WerFault.exe	82
3992	436	WerFault.exe	82
3120	436	WerFault.exe	82
1172	436	WerFault.exe	82
1440	436	WerFault.exe	82
2480	436	WerFault.exe	82
4416	436	WerFault.exe	82

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	1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.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
3632	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3632	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 436 wrote to memory of 3880	436	1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.exe	115
PID 436 wrote to memory of 3880	436	1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.exe	115
PID 436 wrote to memory of 3880	436	1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.exe	115
PID 3880 wrote to memory of 3632	3880	cmd.exe	119
PID 3880 wrote to memory of 3632	3880	cmd.exe	119
PID 3880 wrote to memory of 3632	3880	cmd.exe	119

C:\Users\Admin\AppData\Local\Temp\1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.exe
"C:\Users\Admin\AppData\Local\Temp\1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 468
  2⤵
  - Program crash
  PID:2932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 764
  2⤵
  - Program crash
  PID:4152
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 804
  2⤵
  - Program crash
  PID:2092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 820
  2⤵
  - Program crash
  PID:4580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 864
  2⤵
  - Program crash
  PID:3992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 928
  2⤵
  - Program crash
  PID:3120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 1004
  2⤵
  - Program crash
  PID:1172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 1140
  2⤵
  - Program crash
  PID:1440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 1692
  2⤵
  - Program crash
  PID:2480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3880
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "1c53f2d30886da4a76d1e08256a8e2e644d6c951b59b44fa6a11512a81fba486.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 436 -s 1368
  2⤵
  - Program crash
  PID:4416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 436 -ip 436
1⤵
PID:884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 436 -ip 436
1⤵
PID:1796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 436 -ip 436
1⤵
PID:4584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 436 -ip 436
1⤵
PID:3628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 436 -ip 436
1⤵
PID:940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 436 -ip 436
1⤵
PID:3420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 436 -ip 436
1⤵
PID:4996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 620 -p 436 -ip 436
1⤵
PID:1184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 436 -ip 436
1⤵
PID:916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 640 -p 436 -ip 436
1⤵
PID:3496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\OD2FK6XO\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/436-1-0x0000000002B80000-0x0000000002C80000-memory.dmp

Filesize
1024KB

Download
memory/436-2-0x0000000004780000-0x00000000047BB000-memory.dmp

Filesize
236KB

Download
memory/436-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/436-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/436-12-0x0000000002B80000-0x0000000002C80000-memory.dmp

Filesize
1024KB

Download
memory/436-14-0x0000000000400000-0x0000000002B70000-memory.dmp

Filesize
39.4MB

Download
memory/436-15-0x0000000004780000-0x00000000047BB000-memory.dmp

Filesize
236KB

Download
memory/436-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/436-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/436-35-0x0000000000400000-0x0000000002B70000-memory.dmp

Filesize
39.4MB

Download

Analysis

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