gcleaner | 04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891

General

Target

04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.exe
Size

325KB
MD5

3919567bac2d001d051f2f86a6b00b1e
SHA1

cc7a1c2c0283308a6a32336d94160fa495f369b5
SHA256

04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891
SHA512

a6d0de5a7e262a6b3eea1660319893f2143fe1f2e63ff3eb9ef2867dc8ad90165f7a7bb7b8a5679dda6da9719bb1d5ee4764b8be654ffcef095cfc448df09323
SSDEEP

6144:WQDahWrg8r1VVBB76UBumqMr14PTXwylWZv/Mo0Vdh1aQ:WIagk8rHVj3tqMr14PVlG4Vdz

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.exe

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

System Information Discovery
T1082

Program crash 11 IoCs

pid	pid_target	Process	procid_target
3748	1080	WerFault.exe	82
2468	1080	WerFault.exe	82
1884	1080	WerFault.exe	82
1216	1080	WerFault.exe	82
560	1080	WerFault.exe	82
4616	1080	WerFault.exe	82
2644	1080	WerFault.exe	82
2596	1080	WerFault.exe	82
3504	1080	WerFault.exe	82
2264	1080	WerFault.exe	82
3988	1080	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	04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.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
4648	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4648	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 2420	1080	04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.exe	117
PID 1080 wrote to memory of 2420	1080	04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.exe	117
PID 1080 wrote to memory of 2420	1080	04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.exe	117
PID 2420 wrote to memory of 4648	2420	cmd.exe	121
PID 2420 wrote to memory of 4648	2420	cmd.exe	121
PID 2420 wrote to memory of 4648	2420	cmd.exe	121

C:\Users\Admin\AppData\Local\Temp\04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.exe
"C:\Users\Admin\AppData\Local\Temp\04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 452
  2⤵
  - Program crash
  PID:3748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 480
  2⤵
  - Program crash
  PID:2468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 748
  2⤵
  - Program crash
  PID:1884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 768
  2⤵
  - Program crash
  PID:1216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 804
  2⤵
  - Program crash
  PID:560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 864
  2⤵
  - Program crash
  PID:4616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 912
  2⤵
  - Program crash
  PID:2644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 988
  2⤵
  - Program crash
  PID:2596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 1124
  2⤵
  - Program crash
  PID:3504
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 1544
  2⤵
  - Program crash
  PID:2264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2420
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "04c8f44d0fcc142609321b392bb80a545cc936432765b3f2e2a3524af916c891.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 1508
  2⤵
  - Program crash
  PID:3988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1080 -ip 1080
1⤵
PID:4324

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1080 -ip 1080
1⤵
PID:4872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1080 -ip 1080
1⤵
PID:3628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1080 -ip 1080
1⤵
PID:2216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1080 -ip 1080
1⤵
PID:4592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1080 -ip 1080
1⤵
PID:1708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1080 -ip 1080
1⤵
PID:3740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1080 -ip 1080
1⤵
PID:5092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1080 -ip 1080
1⤵
PID:4528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1080 -ip 1080
1⤵
PID:2540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1080 -ip 1080
1⤵
PID:4640

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\THHXO5RX\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1080-15-0x00000000021A0000-0x00000000021DB000-memory.dmp

Filesize
236KB

Download
memory/1080-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1080-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1080-12-0x0000000000460000-0x0000000000560000-memory.dmp

Filesize
1024KB

Download
memory/1080-14-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1080-1-0x0000000000460000-0x0000000000560000-memory.dmp

Filesize
1024KB

Download
memory/1080-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1080-2-0x00000000021A0000-0x00000000021DB000-memory.dmp

Filesize
236KB

Download
memory/1080-28-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1080-31-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1080-37-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1080-38-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1080-39-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

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