gcleaner | 8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4

General

Target

8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4.exe
Size

350KB
MD5

35ff4cef450504255c6a13305bfe1ca9
SHA1

4a01a3b33efe3c9c7e4c2854e1e73c53aa6bec88
SHA256

8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4
SHA512

ade45656fd9af287267353b5ff048a659f023e2531c40dd96e8296dc3088b74962362ce0e90e48485fbe4d6a3b0da975fd18dc67f90ca3661e4a0d66e9e617a8
SSDEEP

6144:mVXVdzRKygXD6EdQfuK7U946gTyjKCyEHQbbEsYumh:cXVdSXD6ESU94hO+CZQb

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 10 IoCs

pid	pid_target	Process	procid_target
4120	876	WerFault.exe	79
3124	876	WerFault.exe	79
2424	876	WerFault.exe	79
3120	876	WerFault.exe	79
3236	876	WerFault.exe	79
2500	876	WerFault.exe	79
2548	876	WerFault.exe	79
1580	876	WerFault.exe	79
1296	876	WerFault.exe	79
2448	876	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
5024	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5024	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 876 wrote to memory of 436	876	8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4.exe	100
PID 876 wrote to memory of 436	876	8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4.exe	100
PID 876 wrote to memory of 436	876	8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4.exe	100
PID 436 wrote to memory of 5024	436	cmd.exe	103
PID 436 wrote to memory of 5024	436	cmd.exe	103
PID 436 wrote to memory of 5024	436	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4.exe
"C:\Users\Admin\AppData\Local\Temp\8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:876
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 472
  2⤵
  - Program crash
  PID:4120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 796
  2⤵
  - Program crash
  PID:3124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 816
  2⤵
  - Program crash
  PID:2424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 856
  2⤵
  - Program crash
  PID:3120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 892
  2⤵
  - Program crash
  PID:3236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 1000
  2⤵
  - Program crash
  PID:2500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 1088
  2⤵
  - Program crash
  PID:2548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 1256
  2⤵
  - Program crash
  PID:1580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 1712
  2⤵
  - Program crash
  PID:1296
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:436
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "8c055d9a75cbb4ad28940ed89fddee3a80c933c40cd75796f716153c772325e4.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 1664
  2⤵
  - Program crash
  PID:2448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 876 -ip 876
1⤵
PID:4692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 876 -ip 876
1⤵
PID:432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 876 -ip 876
1⤵
PID:2588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 876 -ip 876
1⤵
PID:2140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 876 -ip 876
1⤵
PID:4244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 876 -ip 876
1⤵
PID:4360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 876 -ip 876
1⤵
PID:4056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 876 -ip 876
1⤵
PID:3480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 876 -ip 876
1⤵
PID:1088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 876 -ip 876
1⤵
PID:3232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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/876-2-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/876-1-0x0000000002180000-0x0000000002280000-memory.dmp

Filesize
1024KB

Download
memory/876-3-0x0000000000400000-0x0000000001FA4000-memory.dmp

Filesize
27.6MB

Download
memory/876-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/876-15-0x0000000000400000-0x0000000001FA4000-memory.dmp

Filesize
27.6MB

Download
memory/876-19-0x0000000002180000-0x0000000002280000-memory.dmp

Filesize
1024KB

Download
memory/876-22-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/876-34-0x0000000000400000-0x0000000001FA4000-memory.dmp

Filesize
27.6MB

Download
memory/876-35-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download

Analysis

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