gcleaner | 4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c

General

Target

4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.exe
Size

293KB
MD5

3f10e2c68ddee76344904cbd92c3c150
SHA1

d79657b5b4a6353268d5f7334382f142ddff3b47
SHA256

4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c
SHA512

1dc26d1ea36767036ddc834ff3e7ba395d262e03d6d7710f74e96f2b3054d90d7d343b2fcdb1b8275dbd0b0bff7e171c3bf294143a770a7f24dd9c69ead8434d
SSDEEP

3072:T1wEmtR0+RcRyF46KDet3gXC0K2q5sMNf+BAJ5WQ+CoNhkW6FBxqXYvGrG:T1wE80+Rckm6Bt3gPKVNWE+FTIqI

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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.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
3448	872	WerFault.exe	84
592	872	WerFault.exe	84
4084	872	WerFault.exe	84
4052	872	WerFault.exe	84
4556	872	WerFault.exe	84
4700	872	WerFault.exe	84
1124	872	WerFault.exe	84
3632	872	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	4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.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
2596	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2596	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 872 wrote to memory of 1044	872	4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.exe	116
PID 872 wrote to memory of 1044	872	4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.exe	116
PID 872 wrote to memory of 1044	872	4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.exe	116
PID 1044 wrote to memory of 2596	1044	cmd.exe	119
PID 1044 wrote to memory of 2596	1044	cmd.exe	119
PID 1044 wrote to memory of 2596	1044	cmd.exe	119

C:\Users\Admin\AppData\Local\Temp\4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.exe
"C:\Users\Admin\AppData\Local\Temp\4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 748
  2⤵
  - Program crash
  PID:3448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 768
  2⤵
  - Program crash
  PID:592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 784
  2⤵
  - Program crash
  PID:4084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 812
  2⤵
  - Program crash
  PID:4052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 904
  2⤵
  - Program crash
  PID:4556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 908
  2⤵
  - Program crash
  PID:4700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 1340
  2⤵
  - Program crash
  PID:1124
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1044
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "4400905576a5c650006c34a7657e827658238602d95a8102c68c20dcfb43fe3c.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 1360
  2⤵
  - Program crash
  PID:3632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 872 -ip 872
1⤵
PID:1964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 872 -ip 872
1⤵
PID:1208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 872 -ip 872
1⤵
PID:4088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 872 -ip 872
1⤵
PID:4696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 872 -ip 872
1⤵
PID:2124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 872 -ip 872
1⤵
PID:1956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 872 -ip 872
1⤵
PID:2052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 872 -ip 872
1⤵
PID:5020

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\3DWZNJ32\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/872-1-0x0000000002DC0000-0x0000000002EC0000-memory.dmp

Filesize
1024KB

Download
memory/872-2-0x0000000002CA0000-0x0000000002CCD000-memory.dmp

Filesize
180KB

Download
memory/872-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/872-8-0x0000000002DC0000-0x0000000002EC0000-memory.dmp

Filesize
1024KB

Download
memory/872-11-0x0000000002CA0000-0x0000000002CCD000-memory.dmp

Filesize
180KB

Download
memory/872-10-0x0000000000400000-0x0000000002B4C000-memory.dmp

Filesize
39.3MB

Download
memory/872-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/872-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/872-21-0x0000000000400000-0x0000000002B4C000-memory.dmp

Filesize
39.3MB

Download

Analysis

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