gcleaner | c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c

General

Target

c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
Size

282KB
MD5

30c08d35b8313b68f98506e6e050d8aa
SHA1

840d648bf39050078301374b22ccfb00881c84f4
SHA256

c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c
SHA512

786da950b8e57f769dbb1036268c0c137eaf53dab0fe20b158521f0a921c8b58f07b7aa80d05919beb9dac713c5d48a8bd3f209fcc033cf81ece84a8c70ef16d
SSDEEP

6144:MenNKz5S8ALzqLL594MMO5Uh5MufHPtBcUD9TdVVF23M:MenNKzj82rxY5MaVBcUDda3

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

C2

185.172.128.90

5.42.64.56

185.172.128.69

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 11 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
3940	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
4616	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
3544	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
2632	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
944	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
4900	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
3712	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
2348	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
2740	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
1088	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
2220	4808	WerFault.exe	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

4304 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 4304 taskkill.exe

pid	process
4304	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	4304	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.execmd.exe

description	pid	process	target process
PID 4808 wrote to memory of 904	4808	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe	cmd.exe
PID 4808 wrote to memory of 904	4808	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe	cmd.exe
PID 4808 wrote to memory of 904	4808	c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe	cmd.exe
PID 904 wrote to memory of 4304	904	cmd.exe	taskkill.exe
PID 904 wrote to memory of 4304	904	cmd.exe	taskkill.exe
PID 904 wrote to memory of 4304	904	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe
"C:\Users\Admin\AppData\Local\Temp\c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 472
2⤵
- Program crash
PID:3940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 532
2⤵
- Program crash
PID:4616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 780
2⤵
- Program crash
PID:3544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 800
2⤵
- Program crash
PID:2632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 836
2⤵
- Program crash
PID:944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 852
2⤵
- Program crash
PID:4900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 984
2⤵
- Program crash
PID:3712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 1068
2⤵
- Program crash
PID:2348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 1412
2⤵
- Program crash
PID:2740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 1700
2⤵
- Program crash
PID:1088

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:904

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "c4c8ed1f36cc7c964d45fe8581f9d44a2b71df2d3e898710191a1cdc9776d01c.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 1276
2⤵
- Program crash
PID:2220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4808 -ip 4808
1⤵
PID:1040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4808 -ip 4808
1⤵
PID:3768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4808 -ip 4808
1⤵
PID:1980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4808 -ip 4808
1⤵
PID:5092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4808 -ip 4808
1⤵
PID:1844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4808 -ip 4808
1⤵
PID:4764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 4808 -ip 4808
1⤵
PID:3948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4808 -ip 4808
1⤵
PID:4056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4808 -ip 4808
1⤵
PID:1496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4808 -ip 4808
1⤵
PID:2952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4808 -ip 4808
1⤵
PID:1272

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\ZTEP9QHJ\advdlc[1].htm
Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4808-2-0x0000000002160000-0x000000000219C000-memory.dmp

Filesize
240KB

Download
memory/4808-3-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4808-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/4808-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4808-14-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4808-22-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/4808-23-0x0000000002160000-0x000000000219C000-memory.dmp

Filesize
240KB

Download
memory/4808-25-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4808-34-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4808-35-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download

Analysis

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