gcleaner | e356cf8119ebd0d55db3c840eb42abd744b828a3e1367b2ee732e43624b616c3

Analysis

max time kernel
57s
max time network
59s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
31/01/2023, 00:31

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General

Target

file.exe
Size

2.1MB
MD5

905eb0187344f068860f1c15b8ad6cdc
SHA1

fa458f1fa92ae18b31949145f7144cfc3a8a7a3d
SHA256

e356cf8119ebd0d55db3c840eb42abd744b828a3e1367b2ee732e43624b616c3
SHA512

16adf1fe6746e1841a971410fe19935e117f8a016cb70c90bff598b85360980824ded3195bdc8090ec2cae73675754bf4070ec2dd3ff9c670c9ac6b3591ee3be
SSDEEP

49152:2cgQaPUI8xdXm5/wJG5IqLDTI++1xeKCX9dnseLCgv2MR:DgfPXsxm5/wkLI++1xetvv2MR

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

pid	Process
1140	file.tmp
1520	finalrecovery.exe
1444	viryPRg.exe

Loads dropped DLL 7 IoCs

pid	Process
1632	file.exe
1140	file.tmp
1140	file.tmp
1140	file.tmp
1140	file.tmp
1140	file.tmp
1520	finalrecovery.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 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\FhesoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FhesoftFR\FinalRecovery\is-E6SEL.tmp	file.tmp
File created	C:\Program Files (x86)\FhesoftFR\FinalRecovery\is-MVB45.tmp	file.tmp
File created	C:\Program Files (x86)\FhesoftFR\FinalRecovery\data\is-HJBO1.tmp	file.tmp
File created	C:\Program Files (x86)\FhesoftFR\FinalRecovery\is-R847R.tmp	file.tmp
File created	C:\Program Files (x86)\FhesoftFR\FinalRecovery\is-INC7E.tmp	file.tmp
File created	C:\Program Files (x86)\FhesoftFR\FinalRecovery\is-RLV11.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FhesoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FhesoftFR\FinalRecovery\finalrecovery.exe	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
824	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1520	finalrecovery.exe
1520	finalrecovery.exe
1520	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	824	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 1140	1632	file.exe	27
PID 1632 wrote to memory of 1140	1632	file.exe	27
PID 1632 wrote to memory of 1140	1632	file.exe	27
PID 1632 wrote to memory of 1140	1632	file.exe	27
PID 1632 wrote to memory of 1140	1632	file.exe	27
PID 1632 wrote to memory of 1140	1632	file.exe	27
PID 1632 wrote to memory of 1140	1632	file.exe	27
PID 1140 wrote to memory of 1520	1140	file.tmp	28
PID 1140 wrote to memory of 1520	1140	file.tmp	28
PID 1140 wrote to memory of 1520	1140	file.tmp	28
PID 1140 wrote to memory of 1520	1140	file.tmp	28
PID 1520 wrote to memory of 1444	1520	finalrecovery.exe	29
PID 1520 wrote to memory of 1444	1520	finalrecovery.exe	29
PID 1520 wrote to memory of 1444	1520	finalrecovery.exe	29
PID 1520 wrote to memory of 1444	1520	finalrecovery.exe	29
PID 1520 wrote to memory of 1536	1520	finalrecovery.exe	32
PID 1520 wrote to memory of 1536	1520	finalrecovery.exe	32
PID 1520 wrote to memory of 1536	1520	finalrecovery.exe	32
PID 1520 wrote to memory of 1536	1520	finalrecovery.exe	32
PID 1536 wrote to memory of 824	1536	cmd.exe	34
PID 1536 wrote to memory of 824	1536	cmd.exe	34
PID 1536 wrote to memory of 824	1536	cmd.exe	34
PID 1536 wrote to memory of 824	1536	cmd.exe	34

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:1632
- C:\Users\Admin\AppData\Local\Temp\is-M6BA0.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-M6BA0.tmp\file.tmp" /SL5="$70126,1907331,68096,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:1140
- - C:\Program Files (x86)\FhesoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FhesoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1520
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\viryPRg.exe
      4⤵
      Executes dropped EXE
      PID:1444
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FhesoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1536
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:824

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)\FhesoftFR\FinalRecovery\finalrecovery.exe

Filesize
1.5MB

MD5
488d455a1dde7f6d4287b8e53e03d9b7

SHA1
6e8320278b362866b8056c679bcca7a2f77a7a4d

SHA256
093396e60c57b92e920ee32fc7e773480ff3b4dfb6cc2bebfac74f4b1e470c60

SHA512
dc831d4c080c2e75c53e83a2bd4af59a2934af0d375b2654db67b297524b2351f6d10256750f0ca0d191acad0a469e2fd6263028f83445de0144eb80cd2a270c

Download Submit
C:\Program Files (x86)\FhesoftFR\FinalRecovery\finalrecovery.exe

Filesize
1.5MB

MD5
488d455a1dde7f6d4287b8e53e03d9b7

SHA1
6e8320278b362866b8056c679bcca7a2f77a7a4d

SHA256
093396e60c57b92e920ee32fc7e773480ff3b4dfb6cc2bebfac74f4b1e470c60

SHA512
dc831d4c080c2e75c53e83a2bd4af59a2934af0d375b2654db67b297524b2351f6d10256750f0ca0d191acad0a469e2fd6263028f83445de0144eb80cd2a270c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-M6BA0.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-M6BA0.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

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

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\FhesoftFR\FinalRecovery\finalrecovery.exe

Filesize
1.5MB

MD5
488d455a1dde7f6d4287b8e53e03d9b7

SHA1
6e8320278b362866b8056c679bcca7a2f77a7a4d

SHA256
093396e60c57b92e920ee32fc7e773480ff3b4dfb6cc2bebfac74f4b1e470c60

SHA512
dc831d4c080c2e75c53e83a2bd4af59a2934af0d375b2654db67b297524b2351f6d10256750f0ca0d191acad0a469e2fd6263028f83445de0144eb80cd2a270c

Download Submit
\Users\Admin\AppData\Local\Temp\is-7EPMC.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-7EPMC.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

Download Submit
\Users\Admin\AppData\Local\Temp\is-7EPMC.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-7EPMC.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-M6BA0.tmp\file.tmp

Filesize
696KB

MD5
d76329b30db65f61d55b20f36b56da26

SHA1
5e4c77b723ae8f05b3ae6afeee735a4355f00663

SHA256
229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d

SHA512
a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d

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

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1140-71-0x0000000002DB0000-0x0000000003D37000-memory.dmp

Filesize
15.5MB

Download
memory/1140-78-0x0000000002DB0000-0x0000000003D37000-memory.dmp

Filesize
15.5MB

Download
memory/1520-79-0x0000000000400000-0x0000000001387000-memory.dmp

Filesize
15.5MB

Download
memory/1520-74-0x0000000000400000-0x0000000001387000-memory.dmp

Filesize
15.5MB

Download
memory/1520-73-0x0000000000400000-0x0000000001387000-memory.dmp

Filesize
15.5MB

Download
memory/1520-80-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1520-83-0x0000000000400000-0x0000000001387000-memory.dmp

Filesize
15.5MB

Download
memory/1520-72-0x0000000000400000-0x0000000001387000-memory.dmp

Filesize
15.5MB

Download
memory/1520-86-0x0000000000400000-0x0000000001387000-memory.dmp

Filesize
15.5MB

Download
memory/1632-70-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1632-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/1632-87-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1632-55-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download