gcleaner | f7bb81d45cd78f505f825111d54a19e66c9800e0ed6c616936dff59e421439bf

Analysis

max time kernel
53s
max time network
54s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
08/05/2023, 05:49

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

Rec58.exe
Size

1.8MB
MD5

cea02e35a0a51717da4bd5838edad3f0
SHA1

4a1b2a9a2273a8de1e4cf381a89bed175cc69281
SHA256

f7bb81d45cd78f505f825111d54a19e66c9800e0ed6c616936dff59e421439bf
SHA512

d4ca7f63cb784dc5e8a36cac0c59866fa71b5ce900d16d6fd29a2f605bb99889dc03b1c25a5ea8e650c0dfd8ab0fb7dd98578608140d5788b29af452566e618a
SSDEEP

24576:LbDhhs34uU/SFFTWc3tO16VzF0MzscQsI9sA5oPFU5NR8mx2PPmrkX/4w5D:LbDhhs34uU/SFFicrFFscQsKR8Tlb5D

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

45.12.253.56

45.12.253.72

45.12.253.98

45.12.253.75

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

Deletes itself 1 IoCs

pid	Process
1712	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2020	KQOby10Tz7i9yq.exe

Loads dropped DLL 1 IoCs

pid	Process
1220	Rec58.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1688	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1220	Rec58.exe
1220	Rec58.exe
1220	Rec58.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1688	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 2020	1220	Rec58.exe	27
PID 1220 wrote to memory of 2020	1220	Rec58.exe	27
PID 1220 wrote to memory of 2020	1220	Rec58.exe	27
PID 1220 wrote to memory of 2020	1220	Rec58.exe	27
PID 1220 wrote to memory of 1712	1220	Rec58.exe	30
PID 1220 wrote to memory of 1712	1220	Rec58.exe	30
PID 1220 wrote to memory of 1712	1220	Rec58.exe	30
PID 1220 wrote to memory of 1712	1220	Rec58.exe	30
PID 1712 wrote to memory of 1688	1712	cmd.exe	32
PID 1712 wrote to memory of 1688	1712	cmd.exe	32
PID 1712 wrote to memory of 1688	1712	cmd.exe	32
PID 1712 wrote to memory of 1688	1712	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\Rec58.exe
"C:\Users\Admin\AppData\Local\Temp\Rec58.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\KQOby10Tz7i9yq.exe
  2⤵
  - Executes dropped EXE
  PID:2020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "Rec58.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\Rec58.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1712
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "Rec58.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1688

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\QHKTFKHM\dll[2].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\KQOby10Tz7i9yq.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\KQOby10Tz7i9yq.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1220-54-0x0000000000400000-0x00000000013CB000-memory.dmp

Filesize
15.8MB

Download
memory/1220-55-0x0000000000400000-0x00000000013CB000-memory.dmp

Filesize
15.8MB

Download
memory/1220-61-0x0000000000400000-0x00000000013CB000-memory.dmp

Filesize
15.8MB

Download
memory/1220-65-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1220-69-0x0000000000400000-0x00000000013CB000-memory.dmp

Filesize
15.8MB

Download
memory/1220-84-0x0000000000400000-0x00000000013CB000-memory.dmp

Filesize
15.8MB

Download