gcleaner | fa577181f233ec7ea3c4e9fdca43a3091601dbd9fdb0ae5064ddb3b17bb8dda7

Analysis

max time kernel
69s
max time network
74s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
13/01/2023, 15:47

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General

Target

file.exe
Size

1.5MB
MD5

2e7871dc917bb15b6a3a45553ba567a6
SHA1

9ec13674816e352dbc8fc5295536480caa3aa6c7
SHA256

fa577181f233ec7ea3c4e9fdca43a3091601dbd9fdb0ae5064ddb3b17bb8dda7
SHA512

073dbc9ee1dcae74f726eeb56f5e1c6a87688c10e7f42493301bcc0fd9a71177f15970d7e78dbaf0d72576587f05abb1411491b433480d60fee1218fe4ddda1a
SSDEEP

24576:g20hhVaNj2Kyp3AjzZlfSuCQHNAj67POuGMvW9eex4qYf+kATuCqtn/:g2QV8j2z0fSuCQCj67PJUeex4okATuCi

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
936	file.tmp
1108	NitFiles451.exe
1052	o34YAx.exe

Loads dropped DLL 6 IoCs

pid	Process
940	file.exe
936	file.tmp
936	file.tmp
936	file.tmp
936	file.tmp
1108	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\language\is-4C0SM.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-UTTNI.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-G02RD.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-6B9II.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-4M95U.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-8J85J.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-RF4EN.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\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-DFDSC.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-EEV76.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-0B53J.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-JR07G.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-VH2OS.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-GCA8C.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-2GT7S.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
1732	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1108	NitFiles451.exe
1108	NitFiles451.exe
1108	NitFiles451.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1732	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 940 wrote to memory of 936	940	file.exe	28
PID 940 wrote to memory of 936	940	file.exe	28
PID 940 wrote to memory of 936	940	file.exe	28
PID 940 wrote to memory of 936	940	file.exe	28
PID 940 wrote to memory of 936	940	file.exe	28
PID 940 wrote to memory of 936	940	file.exe	28
PID 940 wrote to memory of 936	940	file.exe	28
PID 936 wrote to memory of 1108	936	file.tmp	29
PID 936 wrote to memory of 1108	936	file.tmp	29
PID 936 wrote to memory of 1108	936	file.tmp	29
PID 936 wrote to memory of 1108	936	file.tmp	29
PID 1108 wrote to memory of 1052	1108	NitFiles451.exe	30
PID 1108 wrote to memory of 1052	1108	NitFiles451.exe	30
PID 1108 wrote to memory of 1052	1108	NitFiles451.exe	30
PID 1108 wrote to memory of 1052	1108	NitFiles451.exe	30
PID 1108 wrote to memory of 676	1108	NitFiles451.exe	33
PID 1108 wrote to memory of 676	1108	NitFiles451.exe	33
PID 1108 wrote to memory of 676	1108	NitFiles451.exe	33
PID 1108 wrote to memory of 676	1108	NitFiles451.exe	33
PID 676 wrote to memory of 1732	676	cmd.exe	35
PID 676 wrote to memory of 1732	676	cmd.exe	35
PID 676 wrote to memory of 1732	676	cmd.exe	35
PID 676 wrote to memory of 1732	676	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:940
- C:\Users\Admin\AppData\Local\Temp\is-9BMFT.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-9BMFT.tmp\file.tmp" /SL5="$80124,1253435,233984,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:936
- - 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:1108
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\o34YAx.exe
      4⤵
      Executes dropped EXE
      PID:1052
  - - 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:676
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "NitFiles451.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1732

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
2.1MB

MD5
4b81eea340ae538c59a7f11b02510d3b

SHA1
a14f037c17b967e390e751b80e03262c4d6588d6

SHA256
a72766efbee971a5b2b29170daf476b560fd3a5ec70465c6df95e2aabcfd2e8a

SHA512
754b3322c34988e2491ed720ba3ab60b4faa38c0c267769e26fc97a495af82aafafe320dc6e51e75b02033bbd8eb64b26f4504ac1deac7d54b18396b943a1a99

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

Filesize
2.1MB

MD5
4b81eea340ae538c59a7f11b02510d3b

SHA1
a14f037c17b967e390e751b80e03262c4d6588d6

SHA256
a72766efbee971a5b2b29170daf476b560fd3a5ec70465c6df95e2aabcfd2e8a

SHA512
754b3322c34988e2491ed720ba3ab60b4faa38c0c267769e26fc97a495af82aafafe320dc6e51e75b02033bbd8eb64b26f4504ac1deac7d54b18396b943a1a99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-9BMFT.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-9BMFT.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}\o34YAx.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

Filesize
2.1MB

MD5
4b81eea340ae538c59a7f11b02510d3b

SHA1
a14f037c17b967e390e751b80e03262c4d6588d6

SHA256
a72766efbee971a5b2b29170daf476b560fd3a5ec70465c6df95e2aabcfd2e8a

SHA512
754b3322c34988e2491ed720ba3ab60b4faa38c0c267769e26fc97a495af82aafafe320dc6e51e75b02033bbd8eb64b26f4504ac1deac7d54b18396b943a1a99

Download Submit
\Users\Admin\AppData\Local\Temp\is-9BMFT.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
\Users\Admin\AppData\Local\Temp\is-FIK20.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-FIK20.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-FIK20.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}\o34YAx.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/936-82-0x0000000003680000-0x0000000004691000-memory.dmp

Filesize
16.1MB

Download
memory/936-70-0x0000000003680000-0x0000000004691000-memory.dmp

Filesize
16.1MB

Download
memory/940-60-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/940-88-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/940-54-0x00000000756B1000-0x00000000756B3000-memory.dmp

Filesize
8KB

Download
memory/940-55-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/940-77-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1108-71-0x0000000000400000-0x0000000001411000-memory.dmp

Filesize
16.1MB

Download
memory/1108-78-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1108-83-0x0000000000400000-0x0000000001411000-memory.dmp

Filesize
16.1MB

Download
memory/1108-84-0x0000000000400000-0x0000000001411000-memory.dmp

Filesize
16.1MB

Download
memory/1108-73-0x0000000000400000-0x0000000001411000-memory.dmp

Filesize
16.1MB

Download
memory/1108-87-0x0000000000400000-0x0000000001411000-memory.dmp

Filesize
16.1MB

Download
memory/1108-72-0x0000000000400000-0x0000000001411000-memory.dmp

Filesize
16.1MB

Download