gcleaner | 8550b27f6e833a77ad2ab4f03ae49c675ca03f0da30317f603d9b707efbb253f

Analysis

max time kernel
58s
max time network
60s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
29-03-2023 09:32

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General

Target

file.exe
Size

1.8MB
MD5

c9b99c3dcef873c18f36959e00112959
SHA1

fc75f718dbb57fb1dcd591c7ce971325bb5fe7cf
SHA256

8550b27f6e833a77ad2ab4f03ae49c675ca03f0da30317f603d9b707efbb253f
SHA512

ae0bc8476e8fa6dd451fac05877e7a3105efc31624becc06ecc2e54a0270c982d57a26449119f0cceb60cf475f61f88f1b7db6afa7190b2eb8a866f6cd5550a3
SSDEEP

49152:EGlJfs+T4N3h1V8yLL//oYjdm+O7T3jLe5dlLYp:50FzLHoYbO7D0PYp

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-D2L31.tmpFRec329.exeo1Rl3W5wXO8cuR.exe

pid process

932 is-D2L31.tmp
1352 FRec329.exe
1700 o1Rl3W5wXO8cuR.exe
Loads dropped DLL 6 IoCs

Processes:

file.exeis-D2L31.tmpFRec329.exe

pid process

1824 file.exe
932 is-D2L31.tmp
932 is-D2L31.tmp
932 is-D2L31.tmp
932 is-D2L31.tmp
1352 FRec329.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
932	is-D2L31.tmp
1352	FRec329.exe
1700	o1Rl3W5wXO8cuR.exe

pid	process
1824	file.exe
932	is-D2L31.tmp
932	is-D2L31.tmp
932	is-D2L31.tmp
932	is-D2L31.tmp
1352	FRec329.exe

Drops file in Program Files directory 9 IoCs

Processes:

is-D2L31.tmp

description	ioc	process
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\unins000.dat	is-D2L31.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\is-RFD32.tmp	is-D2L31.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\is-ISRK2.tmp	is-D2L31.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\is-FPNKF.tmp	is-D2L31.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\is-TC3S1.tmp	is-D2L31.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\is-885VO.tmp	is-D2L31.tmp
File created	C:\Program Files (x86)\FJIsoftFR\FRec329\data\is-9O16E.tmp	is-D2L31.tmp
File opened for modification	C:\Program Files (x86)\FJIsoftFR\FRec329\unins000.dat	is-D2L31.tmp
File opened for modification	C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe	is-D2L31.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

1848 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

FRec329.exe

pid process

1352 FRec329.exe
1352 FRec329.exe
1352 FRec329.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1848 taskkill.exe

pid	process
1848	taskkill.exe

pid	process
1352	FRec329.exe
1352	FRec329.exe
1352	FRec329.exe

description	pid	process
Token: SeDebugPrivilege	1848	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exeis-D2L31.tmpFRec329.execmd.exe

description	pid	process	target process
PID 1824 wrote to memory of 932	1824	file.exe	is-D2L31.tmp
PID 1824 wrote to memory of 932	1824	file.exe	is-D2L31.tmp
PID 1824 wrote to memory of 932	1824	file.exe	is-D2L31.tmp
PID 1824 wrote to memory of 932	1824	file.exe	is-D2L31.tmp
PID 1824 wrote to memory of 932	1824	file.exe	is-D2L31.tmp
PID 1824 wrote to memory of 932	1824	file.exe	is-D2L31.tmp
PID 1824 wrote to memory of 932	1824	file.exe	is-D2L31.tmp
PID 932 wrote to memory of 1352	932	is-D2L31.tmp	FRec329.exe
PID 932 wrote to memory of 1352	932	is-D2L31.tmp	FRec329.exe
PID 932 wrote to memory of 1352	932	is-D2L31.tmp	FRec329.exe
PID 932 wrote to memory of 1352	932	is-D2L31.tmp	FRec329.exe
PID 1352 wrote to memory of 1700	1352	FRec329.exe	o1Rl3W5wXO8cuR.exe
PID 1352 wrote to memory of 1700	1352	FRec329.exe	o1Rl3W5wXO8cuR.exe
PID 1352 wrote to memory of 1700	1352	FRec329.exe	o1Rl3W5wXO8cuR.exe
PID 1352 wrote to memory of 1700	1352	FRec329.exe	o1Rl3W5wXO8cuR.exe
PID 1352 wrote to memory of 1092	1352	FRec329.exe	cmd.exe
PID 1352 wrote to memory of 1092	1352	FRec329.exe	cmd.exe
PID 1352 wrote to memory of 1092	1352	FRec329.exe	cmd.exe
PID 1352 wrote to memory of 1092	1352	FRec329.exe	cmd.exe
PID 1092 wrote to memory of 1848	1092	cmd.exe	taskkill.exe
PID 1092 wrote to memory of 1848	1092	cmd.exe	taskkill.exe
PID 1092 wrote to memory of 1848	1092	cmd.exe	taskkill.exe
PID 1092 wrote to memory of 1848	1092	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:1824
- C:\Users\Admin\AppData\Local\Temp\is-SM2R4.tmp\is-D2L31.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-SM2R4.tmp\is-D2L31.tmp" /SL4 $80124 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1607548 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:932
- - C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe
    "C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1352
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\o1Rl3W5wXO8cuR.exe
      4⤵
      Executes dropped EXE
      PID:1700
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec329.exe" /f & erase "C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1092
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec329.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1848

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)\FJIsoftFR\FRec329\FRec329.exe

Filesize
1.5MB

MD5
3d3ebbb408d34bf1f07475a2d4b99cc6

SHA1
04896306670f4b0072ebbd5ae5a296d34f8a23da

SHA256
70cbaed3e9453c6485a80f64b3a3e1ddbfd794d7b83aa0debcbca44c959a629b

SHA512
9c5cea99eee6b78c18c197ee408bd691da5a888db0be4a9ee172db3abe09cd8a5578969baf89d70b939c1fe296e8caeb0efb32ca8c3ba09b5ae1ec3ebf6b7bfd

Download Submit
C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe

Filesize
1.5MB

MD5
3d3ebbb408d34bf1f07475a2d4b99cc6

SHA1
04896306670f4b0072ebbd5ae5a296d34f8a23da

SHA256
70cbaed3e9453c6485a80f64b3a3e1ddbfd794d7b83aa0debcbca44c959a629b

SHA512
9c5cea99eee6b78c18c197ee408bd691da5a888db0be4a9ee172db3abe09cd8a5578969baf89d70b939c1fe296e8caeb0efb32ca8c3ba09b5ae1ec3ebf6b7bfd

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\VQ77JNZF\dll[2].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-SM2R4.tmp\is-D2L31.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-SM2R4.tmp\is-D2L31.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\o1Rl3W5wXO8cuR.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe

Filesize
1.5MB

MD5
3d3ebbb408d34bf1f07475a2d4b99cc6

SHA1
04896306670f4b0072ebbd5ae5a296d34f8a23da

SHA256
70cbaed3e9453c6485a80f64b3a3e1ddbfd794d7b83aa0debcbca44c959a629b

SHA512
9c5cea99eee6b78c18c197ee408bd691da5a888db0be4a9ee172db3abe09cd8a5578969baf89d70b939c1fe296e8caeb0efb32ca8c3ba09b5ae1ec3ebf6b7bfd

Download Submit
\Users\Admin\AppData\Local\Temp\is-A28EH.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-A28EH.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-A28EH.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-SM2R4.tmp\is-D2L31.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\o1Rl3W5wXO8cuR.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/932-91-0x00000000038D0000-0x0000000004850000-memory.dmp

Filesize
15.5MB

Download
memory/932-80-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/932-134-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/932-109-0x00000000038D0000-0x0000000004850000-memory.dmp

Filesize
15.5MB

Download
memory/932-100-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/1352-93-0x0000000000400000-0x0000000001380000-memory.dmp

Filesize
15.5MB

Download
memory/1352-105-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1352-101-0x0000000000400000-0x0000000001380000-memory.dmp

Filesize
15.5MB

Download
memory/1352-110-0x0000000000400000-0x0000000001380000-memory.dmp

Filesize
15.5MB

Download
memory/1352-113-0x0000000000400000-0x0000000001380000-memory.dmp

Filesize
15.5MB

Download
memory/1352-133-0x0000000000400000-0x0000000001380000-memory.dmp

Filesize
15.5MB

Download
memory/1352-92-0x0000000000400000-0x0000000001380000-memory.dmp

Filesize
15.5MB

Download
memory/1824-99-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1824-54-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1824-135-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download