gcleaner | a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae

General

Target

a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe
Size

423KB
MD5

c7a3775cbc45c5fb06468404eba0bf61
SHA1

38df1fe93c42515051b6e82c1e3c88d64015c969
SHA256

a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae
SHA512

d460e27ee6775353ee291811a8428f07b5b7e15b34033c42ae3b52797fe4d32c3a44ca1e6c368ec5748834e2be46475ef73154b87c42484bfc1b87999c8d64bd
SSDEEP

6144:EstNUDvKsWwGx8wDBl006djfP/+NqZNFQFmPEREv:EONUDvDWwG/lwjWi2mP

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
Downloads MZ/PE file
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
4588	444	WerFault.exe	80
396	444	WerFault.exe	80
2008	444	WerFault.exe	80
3272	444	WerFault.exe	80
4644	444	WerFault.exe	80
2784	444	WerFault.exe	80
1264	444	WerFault.exe	80
368	444	WerFault.exe	80
4024	444	WerFault.exe	80
1404	444	WerFault.exe	80

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	a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.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
4928	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4928	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 444 wrote to memory of 1144	444	a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe	100
PID 444 wrote to memory of 1144	444	a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe	100
PID 444 wrote to memory of 1144	444	a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe	100
PID 1144 wrote to memory of 4928	1144	cmd.exe	104
PID 1144 wrote to memory of 4928	1144	cmd.exe	104
PID 1144 wrote to memory of 4928	1144	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe
"C:\Users\Admin\AppData\Local\Temp\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 476
  2⤵
  - Program crash
  PID:4588
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 796
  2⤵
  - Program crash
  PID:396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 796
  2⤵
  - Program crash
  PID:2008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 828
  2⤵
  - Program crash
  PID:3272
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 836
  2⤵
  - Program crash
  PID:4644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 976
  2⤵
  - Program crash
  PID:2784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 984
  2⤵
  - Program crash
  PID:1264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 1256
  2⤵
  - Program crash
  PID:368
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 1720
  2⤵
  - Program crash
  PID:4024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1144
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "a3847825c493b4b76addda43b65194253f4e66a0eb3e9912514afa7b4e4aabae.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 444 -s 488
  2⤵
  - Program crash
  PID:1404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 444 -ip 444
1⤵
PID:1100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 444 -ip 444
1⤵
PID:4764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 400 -p 444 -ip 444
1⤵
PID:2312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 444 -ip 444
1⤵
PID:1476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 444 -ip 444
1⤵
PID:3492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 444 -ip 444
1⤵
PID:3640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 444 -ip 444
1⤵
PID:1944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 444 -ip 444
1⤵
PID:4076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 444 -ip 444
1⤵
PID:1256

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 444 -ip 444
1⤵
PID:3460

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\JL3S1NU9\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/444-1-0x0000000000870000-0x0000000000970000-memory.dmp

Filesize
1024KB

Download
memory/444-2-0x0000000002310000-0x000000000234C000-memory.dmp

Filesize
240KB

Download
memory/444-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/444-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/444-13-0x0000000000870000-0x0000000000970000-memory.dmp

Filesize
1024KB

Download
memory/444-15-0x0000000002310000-0x000000000234C000-memory.dmp

Filesize
240KB

Download
memory/444-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/444-16-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/444-29-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/444-35-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/444-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

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