gcleaner | 828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778

General

Target

828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe
Size

270KB
MD5

68e6e04eb152d2e673b25d3adacbbc2a
SHA1

5c1672bea07f217f6893c785f64dcf5f0c241cc8
SHA256

828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778
SHA512

e1e4c7ee113c4846c51dfcca64b2ea4f9a3a5fc4ae3bc06c5ad73ea5f15c7a4d9ee1353bc40bdd34510c1c7ccd6a7c784cf69bc314eefcb6293d64636feace66
SSDEEP

6144:doDlF9iyfOR2fLE3g/wG1pmBbZO5/MQaG0Vdh1JQ:dglFgYORkLEezMBbZOL+Vdz

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

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe

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
2168	4032	WerFault.exe	84
3420	4032	WerFault.exe	84
2120	4032	WerFault.exe	84
2612	4032	WerFault.exe	84
4412	4032	WerFault.exe	84
1468	4032	WerFault.exe	84
3636	4032	WerFault.exe	84
3428	4032	WerFault.exe	84

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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2140	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2140	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4032 wrote to memory of 2816	4032	828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe	111
PID 4032 wrote to memory of 2816	4032	828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe	111
PID 4032 wrote to memory of 2816	4032	828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe	111
PID 2816 wrote to memory of 2140	2816	cmd.exe	115
PID 2816 wrote to memory of 2140	2816	cmd.exe	115
PID 2816 wrote to memory of 2140	2816	cmd.exe	115

C:\Users\Admin\AppData\Local\Temp\828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe
"C:\Users\Admin\AppData\Local\Temp\828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 748
  2⤵
  - Program crash
  PID:2168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 740
  2⤵
  - Program crash
  PID:3420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 740
  2⤵
  - Program crash
  PID:2120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 832
  2⤵
  - Program crash
  PID:2612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 904
  2⤵
  - Program crash
  PID:4412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 980
  2⤵
  - Program crash
  PID:1468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 1328
  2⤵
  - Program crash
  PID:3636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2816
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "828d1f0d5f63122595ba14579e1cd28e23bfaa5d03ecbcdcd0168e46fc2a9778.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 1284
  2⤵
  - Program crash
  PID:3428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4032 -ip 4032
1⤵
PID:3204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4032 -ip 4032
1⤵
PID:3916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4032 -ip 4032
1⤵
PID:4240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4032 -ip 4032
1⤵
PID:2328

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 4032 -ip 4032
1⤵
PID:720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4032 -ip 4032
1⤵
PID:4592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 596 -p 4032 -ip 4032
1⤵
PID:2912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 4032 -ip 4032
1⤵
PID:2232

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\3HDB1LPD\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4032-1-0x00000000004A0000-0x00000000005A0000-memory.dmp

Filesize
1024KB

Download
memory/4032-2-0x0000000002040000-0x000000000206D000-memory.dmp

Filesize
180KB

Download
memory/4032-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4032-7-0x00000000004A0000-0x00000000005A0000-memory.dmp

Filesize
1024KB

Download
memory/4032-9-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/4032-10-0x0000000002040000-0x000000000206D000-memory.dmp

Filesize
180KB

Download
memory/4032-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4032-21-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/4032-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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