gcleaner | afa4645481c603615685ab6f7298168464a4d6cf738c34568d98ba7963a0106a

Analysis

max time kernel
48s
max time network
49s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
13-01-2023 21:18

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General

Target

file.exe
Size

1.3MB
MD5

ebb43d8787a9811e685897018eb2cbba
SHA1

c9432f2963c605e7f3bcf138e2447d5d049d0ec3
SHA256

afa4645481c603615685ab6f7298168464a4d6cf738c34568d98ba7963a0106a
SHA512

131de3257696e91549d33ee7b702f5bf17939935a7099a90755f77e8be2d7d327dccc6bde7aee10d024d872eadd13921b6db3614dd2cbf0535a088b747070b67
SSDEEP

24576:g20hhVOt0IzQyuDO5aJPd2bgjkZXtQpQObaOPjo1zfFTYf+kATuCqtn/:g2QVezMysPdp+S1jO/kATuCE/

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
1408	file.tmp
1492	NitFiles451.exe
1728	OKi8im8PxMgc.exe

Loads dropped DLL 6 IoCs

pid	Process
1320	file.exe
1408	file.tmp
1408	file.tmp
1408	file.tmp
1408	file.tmp
1492	NitFiles451.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)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-ENQ41.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-ERC0A.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-4G43Q.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-2MSOV.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-H0TUS.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-3762S.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-8GJAB.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-SJ8V9.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\NitFiles451.exe	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-MRNHB.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-VC7QC.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-A999S.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-UMUH5.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-SIC9H.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-8V96E.tmp	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
840	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1492	NitFiles451.exe
1492	NitFiles451.exe
1492	NitFiles451.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	840	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 1408	1320	file.exe	28
PID 1320 wrote to memory of 1408	1320	file.exe	28
PID 1320 wrote to memory of 1408	1320	file.exe	28
PID 1320 wrote to memory of 1408	1320	file.exe	28
PID 1320 wrote to memory of 1408	1320	file.exe	28
PID 1320 wrote to memory of 1408	1320	file.exe	28
PID 1320 wrote to memory of 1408	1320	file.exe	28
PID 1408 wrote to memory of 1492	1408	file.tmp	29
PID 1408 wrote to memory of 1492	1408	file.tmp	29
PID 1408 wrote to memory of 1492	1408	file.tmp	29
PID 1408 wrote to memory of 1492	1408	file.tmp	29
PID 1492 wrote to memory of 1728	1492	NitFiles451.exe	30
PID 1492 wrote to memory of 1728	1492	NitFiles451.exe	30
PID 1492 wrote to memory of 1728	1492	NitFiles451.exe	30
PID 1492 wrote to memory of 1728	1492	NitFiles451.exe	30
PID 1492 wrote to memory of 1512	1492	NitFiles451.exe	33
PID 1492 wrote to memory of 1512	1492	NitFiles451.exe	33
PID 1492 wrote to memory of 1512	1492	NitFiles451.exe	33
PID 1492 wrote to memory of 1512	1492	NitFiles451.exe	33
PID 1512 wrote to memory of 840	1512	cmd.exe	35
PID 1512 wrote to memory of 840	1512	cmd.exe	35
PID 1512 wrote to memory of 840	1512	cmd.exe	35
PID 1512 wrote to memory of 840	1512	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:1320
- C:\Users\Admin\AppData\Local\Temp\is-D1RU8.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-D1RU8.tmp\file.tmp" /SL5="$80122,1099422,233984,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:1408
- - C:\Program Files (x86)\Nit Files\NitFiles451.exe
    "C:\Program Files (x86)\Nit Files\NitFiles451.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1492
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\OKi8im8PxMgc.exe
      4⤵
      Executes dropped EXE
      PID:1728
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "NitFiles451.exe" /f & erase "C:\Program Files (x86)\Nit Files\NitFiles451.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1512
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "NitFiles451.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:840

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)\Nit Files\NitFiles451.exe

Filesize
1.9MB

MD5
3cfda2bd9f62e5a698aeba0089e53214

SHA1
4e9f838f943cd12381897c2884e3c782b96eb239

SHA256
14a339aba505e6bcc8f1c5f768c29d6febd594e2d990b8679b0a897ea2e7aa80

SHA512
f6d4b3caa15a86a6bc43e9296329870d71d7cb9316543503a15eccfa1e6ed273027beac4dea710b5360cd90429f22d0c2445bf9bf66fc10017f20fcd173bf32b

Download Submit
C:\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
1.9MB

MD5
3cfda2bd9f62e5a698aeba0089e53214

SHA1
4e9f838f943cd12381897c2884e3c782b96eb239

SHA256
14a339aba505e6bcc8f1c5f768c29d6febd594e2d990b8679b0a897ea2e7aa80

SHA512
f6d4b3caa15a86a6bc43e9296329870d71d7cb9316543503a15eccfa1e6ed273027beac4dea710b5360cd90429f22d0c2445bf9bf66fc10017f20fcd173bf32b

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-D1RU8.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-D1RU8.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\OKi8im8PxMgc.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
1.9MB

MD5
3cfda2bd9f62e5a698aeba0089e53214

SHA1
4e9f838f943cd12381897c2884e3c782b96eb239

SHA256
14a339aba505e6bcc8f1c5f768c29d6febd594e2d990b8679b0a897ea2e7aa80

SHA512
f6d4b3caa15a86a6bc43e9296329870d71d7cb9316543503a15eccfa1e6ed273027beac4dea710b5360cd90429f22d0c2445bf9bf66fc10017f20fcd173bf32b

Download Submit
\Users\Admin\AppData\Local\Temp\is-D1RU8.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
\Users\Admin\AppData\Local\Temp\is-TA62C.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-TA62C.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-TA62C.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}\OKi8im8PxMgc.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1320-86-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1320-55-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1320-69-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1320-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/1408-81-0x0000000003610000-0x00000000045F9000-memory.dmp

Filesize
15.9MB

Download
memory/1408-70-0x0000000003610000-0x00000000045F9000-memory.dmp

Filesize
15.9MB

Download
memory/1492-73-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1492-72-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1492-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1492-71-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1492-82-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1492-85-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download