gcleaner | 5637aef3fb43a418cd5bb036103fb3f7427e5062c5d23e14ab3b65c7d87793ec

General

Target

file.exe
Size

2.1MB
MD5

214811e792b69344c84b2f31c81742cc
SHA1

61d2173bfb836ea8acb0ee9dab44e51b4b8d7158
SHA256

5637aef3fb43a418cd5bb036103fb3f7427e5062c5d23e14ab3b65c7d87793ec
SHA512

bfa2f2e168e46d9fe7ea69d19a40c4a15f249d1155c2a574e714903cf2300a9e039272a388983e4f76bf79d63a43ac219b47c8c4424ed07ea5c50d78201dbbc3
SSDEEP

49152:EGlJfsR9+UfJuK3iLMYX0yysI6rWDoV+PukCavPycEaD2LhT25dlLYp:5IEouKmMoSsI66DoPkzvo1IPYp

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

FRec324.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	FRec324.exe

Executes dropped EXE 3 IoCs

Processes:

is-E22NV.tmpFRec324.exeYJNsKgO0ay.exe

pid process

1884 is-E22NV.tmp
3348 FRec324.exe
2104 YJNsKgO0ay.exe
Loads dropped DLL 1 IoCs

Processes:

is-E22NV.tmp

pid process

1884 is-E22NV.tmp
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
1884	is-E22NV.tmp
3348	FRec324.exe
2104	YJNsKgO0ay.exe

pid	process
1884	is-E22NV.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-E22NV.tmp

description	ioc	process
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\unins000.dat	is-E22NV.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\is-OB3HC.tmp	is-E22NV.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\is-12HKJ.tmp	is-E22NV.tmp
File opened for modification	C:\Program Files (x86)\FJCsoftFR\FRec324\unins000.dat	is-E22NV.tmp
File opened for modification	C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe	is-E22NV.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\is-93PHE.tmp	is-E22NV.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\is-IIH2C.tmp	is-E22NV.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\is-SV6DH.tmp	is-E22NV.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\data\is-9UK46.tmp	is-E22NV.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

3328 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

FRec324.exe

pid process

3348 FRec324.exe
3348 FRec324.exe
3348 FRec324.exe
3348 FRec324.exe
3348 FRec324.exe
3348 FRec324.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 3328 taskkill.exe

pid	process
3328	taskkill.exe

pid	process
3348	FRec324.exe
3348	FRec324.exe
3348	FRec324.exe
3348	FRec324.exe
3348	FRec324.exe
3348	FRec324.exe

description	pid	process
Token: SeDebugPrivilege	3328	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-E22NV.tmpFRec324.execmd.exe

description	pid	process	target process
PID 1112 wrote to memory of 1884	1112	file.exe	is-E22NV.tmp
PID 1112 wrote to memory of 1884	1112	file.exe	is-E22NV.tmp
PID 1112 wrote to memory of 1884	1112	file.exe	is-E22NV.tmp
PID 1884 wrote to memory of 3348	1884	is-E22NV.tmp	FRec324.exe
PID 1884 wrote to memory of 3348	1884	is-E22NV.tmp	FRec324.exe
PID 1884 wrote to memory of 3348	1884	is-E22NV.tmp	FRec324.exe
PID 3348 wrote to memory of 2104	3348	FRec324.exe	YJNsKgO0ay.exe
PID 3348 wrote to memory of 2104	3348	FRec324.exe	YJNsKgO0ay.exe
PID 3348 wrote to memory of 2104	3348	FRec324.exe	YJNsKgO0ay.exe
PID 3348 wrote to memory of 2800	3348	FRec324.exe	cmd.exe
PID 3348 wrote to memory of 2800	3348	FRec324.exe	cmd.exe
PID 3348 wrote to memory of 2800	3348	FRec324.exe	cmd.exe
PID 2800 wrote to memory of 3328	2800	cmd.exe	taskkill.exe
PID 2800 wrote to memory of 3328	2800	cmd.exe	taskkill.exe
PID 2800 wrote to memory of 3328	2800	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1112
- C:\Users\Admin\AppData\Local\Temp\is-OF9HT.tmp\is-E22NV.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-OF9HT.tmp\is-E22NV.tmp" /SL4 $C0030 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1935889 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1884
- - C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe
    "C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3348
  - - C:\Users\Admin\AppData\Roaming\{9e74baef-b191-11ed-b7c8-806e6f6e6963}\YJNsKgO0ay.exe
      4⤵
      Executes dropped EXE
      PID:2104
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "FRec324.exe" /f & erase "C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2800
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec324.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe

Filesize
2.4MB

MD5
c7650c42e1bdd827c5fa902f32a641da

SHA1
afa4a0ad763a72428c792fe28422d8ab110e6a4c

SHA256
a9df026c19a72d64b710ffc567d7aafcc3ce9c22c65427f1c4de29e9c8155ddc

SHA512
67d50c391eda1192c7bc68286a8dee0c7d534fdd3e337cab972c9a3a1eaeea058f989fae6b8a5c1e5d4cfc16940ee93f0f9dcee6ff0914e7d39a7b20197956d7

Download Submit
C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe

Filesize
2.4MB

MD5
c7650c42e1bdd827c5fa902f32a641da

SHA1
afa4a0ad763a72428c792fe28422d8ab110e6a4c

SHA256
a9df026c19a72d64b710ffc567d7aafcc3ce9c22c65427f1c4de29e9c8155ddc

SHA512
67d50c391eda1192c7bc68286a8dee0c7d534fdd3e337cab972c9a3a1eaeea058f989fae6b8a5c1e5d4cfc16940ee93f0f9dcee6ff0914e7d39a7b20197956d7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G1ORIWBN\dll[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-G5A7T.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-OF9HT.tmp\is-E22NV.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-OF9HT.tmp\is-E22NV.tmp

Filesize
659KB

MD5
63bdf487b26c0886dbced14bab4d4257

SHA1
e3621d870aa54d552861f1c71dea1fb36d71def6

SHA256
ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a

SHA512
b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40

Download Submit
C:\Users\Admin\AppData\Roaming\{9e74baef-b191-11ed-b7c8-806e6f6e6963}\YJNsKgO0ay.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{9e74baef-b191-11ed-b7c8-806e6f6e6963}\YJNsKgO0ay.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1112-179-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1112-133-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1112-199-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1884-156-0x0000000002330000-0x0000000002331000-memory.dmp

Filesize
4KB

Download
memory/1884-180-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/1884-198-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/3348-182-0x0000000000400000-0x000000000145B000-memory.dmp

Filesize
16.4MB

Download
memory/3348-174-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3348-197-0x0000000000400000-0x000000000145B000-memory.dmp

Filesize
16.4MB

Download
memory/3348-166-0x0000000000400000-0x000000000145B000-memory.dmp

Filesize
16.4MB

Download
memory/3348-165-0x0000000000400000-0x000000000145B000-memory.dmp

Filesize
16.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads