gcleaner | b81ac244d868d3f18564adb0f111783c8131bbcbbf7a1c31b5337dccdafba9a0

Analysis

max time kernel
56s
max time network
57s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
28-03-2023 12:20

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General

Target

file.exe
Size

1.9MB
MD5

01748cde56ca3f9ac2dd3fb9ef32453e
SHA1

1493f8b96726e4ff9c56df883587826700d2287f
SHA256

b81ac244d868d3f18564adb0f111783c8131bbcbbf7a1c31b5337dccdafba9a0
SHA512

14ac28c6f4b782797b23e5ded0f811b51484052585862091e4afdbdc1905a1d80ceb7453ae61ac43e8ecbb55e312e1788e3a0966b03c4e07cdd3f911587fa399
SSDEEP

49152:EGlJfsD3flWD81npGwr+/Vi2EWckDUzvlCFCRi5dlLYp:5s3dJr+Q4U0kQPYp

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-MJKN7.tmpFRec328.exemBH91el54.exe

pid process

1356 is-MJKN7.tmp
1492 FRec328.exe
1736 mBH91el54.exe
Loads dropped DLL 6 IoCs

Processes:

file.exeis-MJKN7.tmpFRec328.exe

pid process

1212 file.exe
1356 is-MJKN7.tmp
1356 is-MJKN7.tmp
1356 is-MJKN7.tmp
1356 is-MJKN7.tmp
1492 FRec328.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
1356	is-MJKN7.tmp
1492	FRec328.exe
1736	mBH91el54.exe

pid	process
1212	file.exe
1356	is-MJKN7.tmp
1356	is-MJKN7.tmp
1356	is-MJKN7.tmp
1356	is-MJKN7.tmp
1492	FRec328.exe

Drops file in Program Files directory 9 IoCs

Processes:

is-MJKN7.tmp

description	ioc	process
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\data\is-R61DH.tmp	is-MJKN7.tmp
File opened for modification	C:\Program Files (x86)\FJHsoftFR\FRec328\unins000.dat	is-MJKN7.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\unins000.dat	is-MJKN7.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-447G5.tmp	is-MJKN7.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-LN02H.tmp	is-MJKN7.tmp
File opened for modification	C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe	is-MJKN7.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-J2CIK.tmp	is-MJKN7.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-GFCN4.tmp	is-MJKN7.tmp
File created	C:\Program Files (x86)\FJHsoftFR\FRec328\is-GO8TO.tmp	is-MJKN7.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

1724 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

FRec328.exe

pid process

1492 FRec328.exe
1492 FRec328.exe
1492 FRec328.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1724 taskkill.exe

pid	process
1724	taskkill.exe

pid	process
1492	FRec328.exe
1492	FRec328.exe
1492	FRec328.exe

description	pid	process
Token: SeDebugPrivilege	1724	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exeis-MJKN7.tmpFRec328.execmd.exe

description	pid	process	target process
PID 1212 wrote to memory of 1356	1212	file.exe	is-MJKN7.tmp
PID 1212 wrote to memory of 1356	1212	file.exe	is-MJKN7.tmp
PID 1212 wrote to memory of 1356	1212	file.exe	is-MJKN7.tmp
PID 1212 wrote to memory of 1356	1212	file.exe	is-MJKN7.tmp
PID 1212 wrote to memory of 1356	1212	file.exe	is-MJKN7.tmp
PID 1212 wrote to memory of 1356	1212	file.exe	is-MJKN7.tmp
PID 1212 wrote to memory of 1356	1212	file.exe	is-MJKN7.tmp
PID 1356 wrote to memory of 1492	1356	is-MJKN7.tmp	FRec328.exe
PID 1356 wrote to memory of 1492	1356	is-MJKN7.tmp	FRec328.exe
PID 1356 wrote to memory of 1492	1356	is-MJKN7.tmp	FRec328.exe
PID 1356 wrote to memory of 1492	1356	is-MJKN7.tmp	FRec328.exe
PID 1492 wrote to memory of 1736	1492	FRec328.exe	mBH91el54.exe
PID 1492 wrote to memory of 1736	1492	FRec328.exe	mBH91el54.exe
PID 1492 wrote to memory of 1736	1492	FRec328.exe	mBH91el54.exe
PID 1492 wrote to memory of 1736	1492	FRec328.exe	mBH91el54.exe
PID 1492 wrote to memory of 1808	1492	FRec328.exe	cmd.exe
PID 1492 wrote to memory of 1808	1492	FRec328.exe	cmd.exe
PID 1492 wrote to memory of 1808	1492	FRec328.exe	cmd.exe
PID 1492 wrote to memory of 1808	1492	FRec328.exe	cmd.exe
PID 1808 wrote to memory of 1724	1808	cmd.exe	taskkill.exe
PID 1808 wrote to memory of 1724	1808	cmd.exe	taskkill.exe
PID 1808 wrote to memory of 1724	1808	cmd.exe	taskkill.exe
PID 1808 wrote to memory of 1724	1808	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:1212
- C:\Users\Admin\AppData\Local\Temp\is-2P9VD.tmp\is-MJKN7.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-2P9VD.tmp\is-MJKN7.tmp" /SL4 $7012A "C:\Users\Admin\AppData\Local\Temp\file.exe" 1768522 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1356
- - C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe
    "C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.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}\mBH91el54.exe
      4⤵
      Executes dropped EXE
      PID:1736
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec328.exe" /f & erase "C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1808
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec328.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1724

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)\FJHsoftFR\FRec328\FRec328.exe

Filesize
1.7MB

MD5
8103f91fefd65d5984cff9c9cd400ef6

SHA1
cfa7a809758921654dcb614b70583513d1519eba

SHA256
9e7ecf9d0d983461cfcb466bd61c81ecdf50b15e43bd60dea3a027639374e001

SHA512
d47cca89495313ef5b9c5238f766f4dd164ec92b9047a2ca66d5cec2cdc4ee15ebd5164142243d47b2aa08e9e34df40cdf9b66d5604dc7a4449b69dcd989ec24

Download Submit
C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe

Filesize
1.7MB

MD5
8103f91fefd65d5984cff9c9cd400ef6

SHA1
cfa7a809758921654dcb614b70583513d1519eba

SHA256
9e7ecf9d0d983461cfcb466bd61c81ecdf50b15e43bd60dea3a027639374e001

SHA512
d47cca89495313ef5b9c5238f766f4dd164ec92b9047a2ca66d5cec2cdc4ee15ebd5164142243d47b2aa08e9e34df40cdf9b66d5604dc7a4449b69dcd989ec24

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

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2P9VD.tmp\is-MJKN7.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2P9VD.tmp\is-MJKN7.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\mBH91el54.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe

Filesize
1.7MB

MD5
8103f91fefd65d5984cff9c9cd400ef6

SHA1
cfa7a809758921654dcb614b70583513d1519eba

SHA256
9e7ecf9d0d983461cfcb466bd61c81ecdf50b15e43bd60dea3a027639374e001

SHA512
d47cca89495313ef5b9c5238f766f4dd164ec92b9047a2ca66d5cec2cdc4ee15ebd5164142243d47b2aa08e9e34df40cdf9b66d5604dc7a4449b69dcd989ec24

Download Submit
\Users\Admin\AppData\Local\Temp\is-2P9VD.tmp\is-MJKN7.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-EDNIC.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}\mBH91el54.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1212-99-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1212-54-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1212-135-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1356-91-0x0000000003A70000-0x0000000004A1E000-memory.dmp

Filesize
15.7MB

Download
memory/1356-84-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1356-100-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/1356-134-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/1356-110-0x0000000003A70000-0x0000000004A1E000-memory.dmp

Filesize
15.7MB

Download
memory/1492-93-0x0000000000400000-0x00000000013AE000-memory.dmp

Filesize
15.7MB

Download
memory/1492-111-0x0000000000400000-0x00000000013AE000-memory.dmp

Filesize
15.7MB

Download
memory/1492-133-0x0000000000400000-0x00000000013AE000-memory.dmp

Filesize
15.7MB

Download
memory/1492-105-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1492-101-0x0000000000400000-0x00000000013AE000-memory.dmp

Filesize
15.7MB

Download
memory/1492-92-0x0000000000400000-0x00000000013AE000-memory.dmp

Filesize
15.7MB

Download