gcleaner | 5e6a2bde98e5e1e99b8d7bd5383b057068b3ac075d5c3521a91b24919f9eea3d

Analysis

max time kernel
54s
max time network
57s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
14/01/2023, 13:17

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General

Target

file.exe
Size

1.5MB
MD5

cfe7497890c5d69a0999b91d613b85fd
SHA1

7e4bba924f92a3d060850211cfb8c8f3c1742b8a
SHA256

5e6a2bde98e5e1e99b8d7bd5383b057068b3ac075d5c3521a91b24919f9eea3d
SHA512

b0c30f5fb7eb47778de6c4c711af700024a20d55cdcdf8d79fac70d2319d5e0405ce1487a19bef4e47acd1e851bc2f158f85b4f03e07c486cdda2b85e8f8c393
SSDEEP

24576:r20h50Ftb9eyobU3e1yEj5K5mK0RNyQPSjKtoj63QSiwrlhwCbr:r2w2tb9j0U3SyY5KkqQKGtoO3QSiwrlh

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

45.139.105.171

85.31.46.167

107.182.129.235

171.22.30.106

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
1888	file.tmp
700	OitFiles450.exe
524	kG1koMBvlnzB.exe

Loads dropped DLL 6 IoCs

pid	Process
976	file.exe
1888	file.tmp
1888	file.tmp
1888	file.tmp
1888	file.tmp
700	OitFiles450.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Oit Files\is-Q2CO7.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\language\is-7RN8P.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Oit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Oit Files\language\is-O1L2S.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\is-04BNN.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\language\is-6MDOK.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\language\is-BNCVA.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\language\is-L66QJ.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\is-1HJO4.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\is-3LFAQ.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\language\is-3CI7H.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\language\is-HG031.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\language\is-1IBLV.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\language\is-7O4LH.tmp	file.tmp
File created	C:\Program Files (x86)\Oit Files\is-NG713.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Oit Files\OitFiles450.exe	file.tmp
File created	C:\Program Files (x86)\Oit Files\unins000.dat	file.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1756	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
700	OitFiles450.exe
700	OitFiles450.exe
700	OitFiles450.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1756	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 976 wrote to memory of 1888	976	file.exe	28
PID 976 wrote to memory of 1888	976	file.exe	28
PID 976 wrote to memory of 1888	976	file.exe	28
PID 976 wrote to memory of 1888	976	file.exe	28
PID 976 wrote to memory of 1888	976	file.exe	28
PID 976 wrote to memory of 1888	976	file.exe	28
PID 976 wrote to memory of 1888	976	file.exe	28
PID 1888 wrote to memory of 700	1888	file.tmp	29
PID 1888 wrote to memory of 700	1888	file.tmp	29
PID 1888 wrote to memory of 700	1888	file.tmp	29
PID 1888 wrote to memory of 700	1888	file.tmp	29
PID 700 wrote to memory of 524	700	OitFiles450.exe	30
PID 700 wrote to memory of 524	700	OitFiles450.exe	30
PID 700 wrote to memory of 524	700	OitFiles450.exe	30
PID 700 wrote to memory of 524	700	OitFiles450.exe	30
PID 700 wrote to memory of 2020	700	OitFiles450.exe	33
PID 700 wrote to memory of 2020	700	OitFiles450.exe	33
PID 700 wrote to memory of 2020	700	OitFiles450.exe	33
PID 700 wrote to memory of 2020	700	OitFiles450.exe	33
PID 2020 wrote to memory of 1756	2020	cmd.exe	35
PID 2020 wrote to memory of 1756	2020	cmd.exe	35
PID 2020 wrote to memory of 1756	2020	cmd.exe	35
PID 2020 wrote to memory of 1756	2020	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:976
- C:\Users\Admin\AppData\Local\Temp\is-H2GI6.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-H2GI6.tmp\file.tmp" /SL5="$80022,1275541,229888,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1888
- - C:\Program Files (x86)\Oit Files\OitFiles450.exe
    "C:\Program Files (x86)\Oit Files\OitFiles450.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:700
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\kG1koMBvlnzB.exe
      4⤵
      Executes dropped EXE
      PID:524
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "OitFiles450.exe" /f & erase "C:\Program Files (x86)\Oit Files\OitFiles450.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2020
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "OitFiles450.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Oit Files\OitFiles450.exe

Filesize
2.1MB

MD5
8b0338e54e54280edab63b6f5e2ed32d

SHA1
66ed8d65745426457a98f1ca0abd477d4aab4399

SHA256
1ca30bf4e8d1b306bc166f8039c6be69bf86bf89cd2f6875845e772a2681bf47

SHA512
c8afbddc0fa093c27bb882ee042329af09cf33a8b54591484ea696f35c06340a12693892964d728087002691e461ce2a0e2fb266f60705e0f136b7582238e597

Download Submit
C:\Program Files (x86)\Oit Files\OitFiles450.exe

Filesize
2.1MB

MD5
8b0338e54e54280edab63b6f5e2ed32d

SHA1
66ed8d65745426457a98f1ca0abd477d4aab4399

SHA256
1ca30bf4e8d1b306bc166f8039c6be69bf86bf89cd2f6875845e772a2681bf47

SHA512
c8afbddc0fa093c27bb882ee042329af09cf33a8b54591484ea696f35c06340a12693892964d728087002691e461ce2a0e2fb266f60705e0f136b7582238e597

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-H2GI6.tmp\file.tmp

Filesize
779KB

MD5
70f2afb7b9313b21cd852a33bebe23d8

SHA1
6d17a890977a7434fed0ab6f75f125335af36687

SHA256
3f7c916efbd1fae45d696f00791a93d9ad2adf18b2ee66daddb30a9d431dfe18

SHA512
dd00d319a17ee6eed692aa80426ce5004be98e550fe567c3b5d725d931e258107eb7fe2a2a181ba97b90093674bb50880b78de10ec4e64b75ecde3b303cdc447

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-H2GI6.tmp\file.tmp

Filesize
779KB

MD5
70f2afb7b9313b21cd852a33bebe23d8

SHA1
6d17a890977a7434fed0ab6f75f125335af36687

SHA256
3f7c916efbd1fae45d696f00791a93d9ad2adf18b2ee66daddb30a9d431dfe18

SHA512
dd00d319a17ee6eed692aa80426ce5004be98e550fe567c3b5d725d931e258107eb7fe2a2a181ba97b90093674bb50880b78de10ec4e64b75ecde3b303cdc447

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\kG1koMBvlnzB.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Oit Files\OitFiles450.exe

Filesize
2.1MB

MD5
8b0338e54e54280edab63b6f5e2ed32d

SHA1
66ed8d65745426457a98f1ca0abd477d4aab4399

SHA256
1ca30bf4e8d1b306bc166f8039c6be69bf86bf89cd2f6875845e772a2681bf47

SHA512
c8afbddc0fa093c27bb882ee042329af09cf33a8b54591484ea696f35c06340a12693892964d728087002691e461ce2a0e2fb266f60705e0f136b7582238e597

Download Submit
\Users\Admin\AppData\Local\Temp\is-H2GI6.tmp\file.tmp

Filesize
779KB

MD5
70f2afb7b9313b21cd852a33bebe23d8

SHA1
6d17a890977a7434fed0ab6f75f125335af36687

SHA256
3f7c916efbd1fae45d696f00791a93d9ad2adf18b2ee66daddb30a9d431dfe18

SHA512
dd00d319a17ee6eed692aa80426ce5004be98e550fe567c3b5d725d931e258107eb7fe2a2a181ba97b90093674bb50880b78de10ec4e64b75ecde3b303cdc447

Download Submit
\Users\Admin\AppData\Local\Temp\is-KDBJ2.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-KDBJ2.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-KDBJ2.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\kG1koMBvlnzB.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/700-71-0x0000000000400000-0x000000000141A000-memory.dmp

Filesize
16.1MB

Download
memory/700-86-0x0000000000400000-0x000000000141A000-memory.dmp

Filesize
16.1MB

Download
memory/700-72-0x0000000000400000-0x000000000141A000-memory.dmp

Filesize
16.1MB

Download
memory/700-73-0x0000000000400000-0x000000000141A000-memory.dmp

Filesize
16.1MB

Download
memory/700-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/700-82-0x0000000000400000-0x000000000141A000-memory.dmp

Filesize
16.1MB

Download
memory/700-83-0x0000000000400000-0x000000000141A000-memory.dmp

Filesize
16.1MB

Download
memory/976-54-0x0000000075891000-0x0000000075893000-memory.dmp

Filesize
8KB

Download
memory/976-65-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/976-55-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/976-87-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1888-70-0x0000000003650000-0x000000000466A000-memory.dmp

Filesize
16.1MB

Download
memory/1888-81-0x0000000003650000-0x000000000466A000-memory.dmp

Filesize
16.1MB

Download