gcleaner | aecd06acb8047ffeb825b9692de59d22c5ff33feedc637565c937a20165233cd

General

Target

f49af8056a5af3e2f7ac84b62de3ac70N.exe
Size

404KB
MD5

f49af8056a5af3e2f7ac84b62de3ac70
SHA1

ab7450a4076c3af3c51b0ea7ae231fcf2f573c29
SHA256

aecd06acb8047ffeb825b9692de59d22c5ff33feedc637565c937a20165233cd
SHA512

0cd8a1b0aaf9b8fdfdbd1f269fa9feb9c322cb883b120460e81960b984f780da1d77096a6f63a92abd140cfe81b5f3ac7fad0430cb72ae3e2cd75645be46a9fc
SSDEEP

6144:XsyT6I4FQhpxTUvLTfSwYTeh1yYKdvXdU3Dd:XFTdppmvLTfpYTevKrad

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	f49af8056a5af3e2f7ac84b62de3ac70N.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

pid	pid_target	Process	procid_target
4068	4404	WerFault.exe	82
4492	4404	WerFault.exe	82
4216	4404	WerFault.exe	82
1212	4404	WerFault.exe	82
3568	4404	WerFault.exe	82
1220	4404	WerFault.exe	82
2136	4404	WerFault.exe	82
3592	4404	WerFault.exe	82
5080	4404	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f49af8056a5af3e2f7ac84b62de3ac70N.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4976	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4976	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4404 wrote to memory of 624	4404	f49af8056a5af3e2f7ac84b62de3ac70N.exe	112
PID 4404 wrote to memory of 624	4404	f49af8056a5af3e2f7ac84b62de3ac70N.exe	112
PID 4404 wrote to memory of 624	4404	f49af8056a5af3e2f7ac84b62de3ac70N.exe	112
PID 624 wrote to memory of 4976	624	cmd.exe	116
PID 624 wrote to memory of 4976	624	cmd.exe	116
PID 624 wrote to memory of 4976	624	cmd.exe	116

C:\Users\Admin\AppData\Local\Temp\f49af8056a5af3e2f7ac84b62de3ac70N.exe
"C:\Users\Admin\AppData\Local\Temp\f49af8056a5af3e2f7ac84b62de3ac70N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 748
  2⤵
  - Program crash
  PID:4068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 756
  2⤵
  - Program crash
  PID:4492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 776
  2⤵
  - Program crash
  PID:4216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 812
  2⤵
  - Program crash
  PID:1212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 904
  2⤵
  - Program crash
  PID:3568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 908
  2⤵
  - Program crash
  PID:1220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 1020
  2⤵
  - Program crash
  PID:2136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 1444
  2⤵
  - Program crash
  PID:3592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "f49af8056a5af3e2f7ac84b62de3ac70N.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f49af8056a5af3e2f7ac84b62de3ac70N.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:624
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "f49af8056a5af3e2f7ac84b62de3ac70N.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 1580
  2⤵
  - Program crash
  PID:5080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4404 -ip 4404
1⤵
PID:2556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4404 -ip 4404
1⤵
PID:4304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4404 -ip 4404
1⤵
PID:3528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4404 -ip 4404
1⤵
PID:2972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4404 -ip 4404
1⤵
PID:2988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4404 -ip 4404
1⤵
PID:4952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4404 -ip 4404
1⤵
PID:3248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4404 -ip 4404
1⤵
PID:3980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4404 -ip 4404
1⤵
PID:744

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/4404-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/4404-2-0x0000000000600000-0x000000000062D000-memory.dmp

Filesize
180KB

Download
memory/4404-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4404-8-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/4404-10-0x0000000000600000-0x000000000062D000-memory.dmp

Filesize
180KB

Download
memory/4404-9-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/4404-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4404-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4404-21-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download

Analysis

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