gcleaner | 76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4

General

Target

76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4.exe
Size

388KB
MD5

7c8a91f6fdcc13734b0b6e2291ff4d98
SHA1

e900c9645c8a0883820306f37fd56ae983625ac1
SHA256

76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4
SHA512

85a341a5f9be6bbbce9a07b10ae9181c94129948e8238afbd2110a5e6527531320d9dc07cee36aed67010e618ecb500ab178190c99909791ed7bbe2c76bc0bef
SSDEEP

6144:p9I32m12dx4lkg6gUSbyBms4KuELE4OHja1jjY/f:pamm2d0rUoims4Jz4OE

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
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
4560	72	WerFault.exe	79
2336	72	WerFault.exe	79
3436	72	WerFault.exe	79
4964	72	WerFault.exe	79
3664	72	WerFault.exe	79
4552	72	WerFault.exe	79
2340	72	WerFault.exe	79
1992	72	WerFault.exe	79

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	76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4.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
236	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	236	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 72 wrote to memory of 4332	72	76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4.exe	96
PID 72 wrote to memory of 4332	72	76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4.exe	96
PID 72 wrote to memory of 4332	72	76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4.exe	96
PID 4332 wrote to memory of 236	4332	cmd.exe	100
PID 4332 wrote to memory of 236	4332	cmd.exe	100
PID 4332 wrote to memory of 236	4332	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4.exe
"C:\Users\Admin\AppData\Local\Temp\76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:72
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 72 -s 772
  2⤵
  - Program crash
  PID:4560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 72 -s 792
  2⤵
  - Program crash
  PID:2336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 72 -s 772
  2⤵
  - Program crash
  PID:3436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 72 -s 844
  2⤵
  - Program crash
  PID:4964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 72 -s 980
  2⤵
  - Program crash
  PID:3664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 72 -s 984
  2⤵
  - Program crash
  PID:4552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 72 -s 1572
  2⤵
  - Program crash
  PID:2340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4332
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "76c6729c20c95f1102082bb7af14713e8797f750db7f5bcde4ab507011ef05f4.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 72 -s 1640
  2⤵
  - Program crash
  PID:1992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 72 -ip 72
1⤵
PID:3556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 72 -ip 72
1⤵
PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 72 -ip 72
1⤵
PID:4932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 72 -ip 72
1⤵
PID:3928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 72 -ip 72
1⤵
PID:3596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 72 -ip 72
1⤵
PID:1404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 72 -ip 72
1⤵
PID:2524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 72 -ip 72
1⤵
PID:2856

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

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\FYUCG7L6\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/72-1-0x0000000002640000-0x0000000002740000-memory.dmp

Filesize
1024KB

Download
memory/72-2-0x0000000004180000-0x00000000041AD000-memory.dmp

Filesize
180KB

Download
memory/72-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/72-7-0x0000000002640000-0x0000000002740000-memory.dmp

Filesize
1024KB

Download
memory/72-9-0x0000000004180000-0x00000000041AD000-memory.dmp

Filesize
180KB

Download
memory/72-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/72-11-0x0000000000400000-0x000000000247A000-memory.dmp

Filesize
32.5MB

Download
memory/72-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/72-21-0x0000000000400000-0x000000000247A000-memory.dmp

Filesize
32.5MB

Download

Analysis

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