gcleaner | 416906fa249e98117d8a1ebada50a8083b7f79929ce95754a1cc1789a14605f3

Analysis

max time kernel
60s
max time network
63s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
28-03-2023 02:17

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General

Target

file.exe
Size

1.8MB
MD5

4efcce32a27e0d8451419f176cf61b03
SHA1

87f324f74d8421c409574c8f8acc328c6074bce6
SHA256

416906fa249e98117d8a1ebada50a8083b7f79929ce95754a1cc1789a14605f3
SHA512

8adc2fc015e5e228029803af3db0b2472e2d130180e3eaec97821d5d89ffe32d6486916e612b6eb5d6af570e60b417f2318801d864220dfab682f6609f54b43a
SSDEEP

49152:EGlJfsWLs9WpY4dlLrqRtt0HEmPmaz/JnjLQjuxIhlk6U5dlLYp:53LlpTzLrqRE5h/JjLsuxI/kvPYp

Score

10^/10

gcleaner discovery 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
Executes dropped EXE 3 IoCs

Processes:

is-0916V.tmpFRec327.exeB8bHDDkrn.exe

pid process

1772 is-0916V.tmp
1676 FRec327.exe
1484 B8bHDDkrn.exe
Loads dropped DLL 6 IoCs

Processes:

file.exeis-0916V.tmpFRec327.exe

pid process

1712 file.exe
1772 is-0916V.tmp
1772 is-0916V.tmp
1772 is-0916V.tmp
1772 is-0916V.tmp
1676 FRec327.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

pid	process
1772	is-0916V.tmp
1676	FRec327.exe
1484	B8bHDDkrn.exe

pid	process
1712	file.exe
1772	is-0916V.tmp
1772	is-0916V.tmp
1772	is-0916V.tmp
1772	is-0916V.tmp
1676	FRec327.exe

Drops file in Program Files directory 9 IoCs

Processes:

is-0916V.tmp

description	ioc	process
File created	C:\Program Files (x86)\FJGsoftFR\FRec327\is-MTQ0F.tmp	is-0916V.tmp
File created	C:\Program Files (x86)\FJGsoftFR\FRec327\is-0HRTB.tmp	is-0916V.tmp
File opened for modification	C:\Program Files (x86)\FJGsoftFR\FRec327\unins000.dat	is-0916V.tmp
File opened for modification	C:\Program Files (x86)\FJGsoftFR\FRec327\FRec327.exe	is-0916V.tmp
File created	C:\Program Files (x86)\FJGsoftFR\FRec327\unins000.dat	is-0916V.tmp
File created	C:\Program Files (x86)\FJGsoftFR\FRec327\is-176II.tmp	is-0916V.tmp
File created	C:\Program Files (x86)\FJGsoftFR\FRec327\data\is-95STO.tmp	is-0916V.tmp
File created	C:\Program Files (x86)\FJGsoftFR\FRec327\is-GUMS7.tmp	is-0916V.tmp
File created	C:\Program Files (x86)\FJGsoftFR\FRec327\is-E4H1S.tmp	is-0916V.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

Processes:

taskkill.exe

pid process

1436 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

FRec327.exe

pid process

1676 FRec327.exe
1676 FRec327.exe
1676 FRec327.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1436 taskkill.exe

pid	process
1436	taskkill.exe

pid	process
1676	FRec327.exe
1676	FRec327.exe
1676	FRec327.exe

description	pid	process
Token: SeDebugPrivilege	1436	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exeis-0916V.tmpFRec327.execmd.exe

description	pid	process	target process
PID 1712 wrote to memory of 1772	1712	file.exe	is-0916V.tmp
PID 1712 wrote to memory of 1772	1712	file.exe	is-0916V.tmp
PID 1712 wrote to memory of 1772	1712	file.exe	is-0916V.tmp
PID 1712 wrote to memory of 1772	1712	file.exe	is-0916V.tmp
PID 1712 wrote to memory of 1772	1712	file.exe	is-0916V.tmp
PID 1712 wrote to memory of 1772	1712	file.exe	is-0916V.tmp
PID 1712 wrote to memory of 1772	1712	file.exe	is-0916V.tmp
PID 1772 wrote to memory of 1676	1772	is-0916V.tmp	FRec327.exe
PID 1772 wrote to memory of 1676	1772	is-0916V.tmp	FRec327.exe
PID 1772 wrote to memory of 1676	1772	is-0916V.tmp	FRec327.exe
PID 1772 wrote to memory of 1676	1772	is-0916V.tmp	FRec327.exe
PID 1676 wrote to memory of 1484	1676	FRec327.exe	B8bHDDkrn.exe
PID 1676 wrote to memory of 1484	1676	FRec327.exe	B8bHDDkrn.exe
PID 1676 wrote to memory of 1484	1676	FRec327.exe	B8bHDDkrn.exe
PID 1676 wrote to memory of 1484	1676	FRec327.exe	B8bHDDkrn.exe
PID 1676 wrote to memory of 628	1676	FRec327.exe	cmd.exe
PID 1676 wrote to memory of 628	1676	FRec327.exe	cmd.exe
PID 1676 wrote to memory of 628	1676	FRec327.exe	cmd.exe
PID 1676 wrote to memory of 628	1676	FRec327.exe	cmd.exe
PID 628 wrote to memory of 1436	628	cmd.exe	taskkill.exe
PID 628 wrote to memory of 1436	628	cmd.exe	taskkill.exe
PID 628 wrote to memory of 1436	628	cmd.exe	taskkill.exe
PID 628 wrote to memory of 1436	628	cmd.exe	taskkill.exe

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:1712
- C:\Users\Admin\AppData\Local\Temp\is-TEGAD.tmp\is-0916V.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-TEGAD.tmp\is-0916V.tmp" /SL4 $70120 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1624917 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1772
- - C:\Program Files (x86)\FJGsoftFR\FRec327\FRec327.exe
    "C:\Program Files (x86)\FJGsoftFR\FRec327\FRec327.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1676
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\B8bHDDkrn.exe
      4⤵
      Executes dropped EXE
      PID:1484
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec327.exe" /f & erase "C:\Program Files (x86)\FJGsoftFR\FRec327\FRec327.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:628
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec327.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1436

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)\FJGsoftFR\FRec327\FRec327.exe

Filesize
1.6MB

MD5
0c49cd18e2766622fd1bc42a8dab4e89

SHA1
048f39391dcc5278f76020d8b900a8000df3dc34

SHA256
2c49c92fb85e7dc27e205841d59d61ec94b0312ecf167ecad79ea4c8bf96733b

SHA512
8727332373b52613575d35b29a5c7e986ccfd21792b1b76dc2026393d0f4037d959d5962ab87bd1d4713f81d14ce9a14eed08af70e97ac8ce418c5be96d010dd

Download Submit
C:\Program Files (x86)\FJGsoftFR\FRec327\FRec327.exe

Filesize
1.6MB

MD5
0c49cd18e2766622fd1bc42a8dab4e89

SHA1
048f39391dcc5278f76020d8b900a8000df3dc34

SHA256
2c49c92fb85e7dc27e205841d59d61ec94b0312ecf167ecad79ea4c8bf96733b

SHA512
8727332373b52613575d35b29a5c7e986ccfd21792b1b76dc2026393d0f4037d959d5962ab87bd1d4713f81d14ce9a14eed08af70e97ac8ce418c5be96d010dd

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\EV74ZOZO\dll[2].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-TEGAD.tmp\is-0916V.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-TEGAD.tmp\is-0916V.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\B8bHDDkrn.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\FJGsoftFR\FRec327\FRec327.exe

Filesize
1.6MB

MD5
0c49cd18e2766622fd1bc42a8dab4e89

SHA1
048f39391dcc5278f76020d8b900a8000df3dc34

SHA256
2c49c92fb85e7dc27e205841d59d61ec94b0312ecf167ecad79ea4c8bf96733b

SHA512
8727332373b52613575d35b29a5c7e986ccfd21792b1b76dc2026393d0f4037d959d5962ab87bd1d4713f81d14ce9a14eed08af70e97ac8ce418c5be96d010dd

Download Submit
\Users\Admin\AppData\Local\Temp\is-0A837.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-0A837.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-0A837.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-TEGAD.tmp\is-0916V.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\B8bHDDkrn.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1676-93-0x0000000000400000-0x000000000139A000-memory.dmp

Filesize
15.6MB

Download
memory/1676-103-0x0000000000400000-0x000000000139A000-memory.dmp

Filesize
15.6MB

Download
memory/1676-133-0x0000000000400000-0x000000000139A000-memory.dmp

Filesize
15.6MB

Download
memory/1676-96-0x0000000000400000-0x000000000139A000-memory.dmp

Filesize
15.6MB

Download
memory/1676-112-0x0000000000400000-0x000000000139A000-memory.dmp

Filesize
15.6MB

Download
memory/1676-92-0x0000000000400000-0x000000000139A000-memory.dmp

Filesize
15.6MB

Download
memory/1676-109-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1712-54-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1712-94-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1712-135-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1772-102-0x0000000003990000-0x000000000492A000-memory.dmp

Filesize
15.6MB

Download
memory/1772-91-0x0000000003990000-0x000000000492A000-memory.dmp

Filesize
15.6MB

Download
memory/1772-95-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/1772-134-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/1772-72-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download