gcleaner | d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e

General

Target

d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe
Size

304KB
MD5

aa59bc3579dd85b7abb99e48198f6f81
SHA1

e8753b8119895dfad22cf394e678c393298cc30a
SHA256

d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e
SHA512

9c13da889688a32374fa4260e5bf41c1238e3fdfefc2a2b20b1a94d133d49510f43cd96dfc1f51a0cb767e0ae303d2e914435eb84e84e886999ac87976c4f6db
SSDEEP

6144:FBgQgpT8TUd+nDTfieubh2G/ExmUe2WdtpLgq:HgQgXd+Sth7ymCW

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

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1032	2332	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	d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4676	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4676	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 1504	2332	d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe	95
PID 2332 wrote to memory of 1504	2332	d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe	95
PID 2332 wrote to memory of 1504	2332	d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe	95
PID 1504 wrote to memory of 4676	1504	cmd.exe	99
PID 1504 wrote to memory of 4676	1504	cmd.exe	99
PID 1504 wrote to memory of 4676	1504	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe
"C:\Users\Admin\AppData\Local\Temp\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1504
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "d45a5a500fe7c053a809df957fe4bfce5a54ba99693c57bb7216accc32ebce1e.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4676
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2332 -s 1620
  2⤵
  - Program crash
  PID:1032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2332 -ip 2332
1⤵
PID:5072

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\KDOTUZKP\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2332-1-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/2332-2-0x0000000002090000-0x00000000020CC000-memory.dmp

Filesize
240KB

Download
memory/2332-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2332-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2332-13-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/2332-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2332-16-0x0000000002090000-0x00000000020CC000-memory.dmp

Filesize
240KB

Download
memory/2332-18-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2332-29-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2332-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2332-35-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

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