gcleaner | 5637aef3fb43a418cd5bb036103fb3f7427e5062c5d23e14ab3b65c7d87793ec

Analysis

max time kernel
116s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2023, 01:14

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General

Target
file.exe
Size 2.1MB
Sample230325-blm6ysce21
SHA256 5637aef3fb43a418cd5bb036103fb3f7427e5062c5d23e14ab3b65c7d87793ec
MD5 214811e792b69344c84b2f31c81742cc
SHA1 61d2173bfb836ea8acb0ee9dab44e51b4b8d7158
SHA512 bfa2f2e168e46d9fe7ea69d19a40c4a15f249d1155c2a574e714903cf2300a9e039272a388983e4f76bf79d63a43ac219b47c8c4424ed07ea5c50d78201dbbc3
SSDEEP 49152:EGlJfsR9+UfJuK3iLMYX0yysI6rWDoV+PukCavPycEaD2LhT25dlLYp:5IEouKmMoSsI66DoPkzvo1IPYp
MD5 SHA1 SHA512 SSDEEP

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

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	FRec324.exe

Executes dropped EXE 3 IoCs

pid	Process
4192	is-M6F0S.tmp
1504	FRec324.exe
4340	AIFqhc9.exe

Loads dropped DLL 1 IoCs

pid	Process
4192	is-M6F0S.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

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\FJCsoftFR\FRec324\unins000.dat	is-M6F0S.tmp
File opened for modification	C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe	is-M6F0S.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\unins000.dat	is-M6F0S.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\is-2QOAI.tmp	is-M6F0S.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\is-BNVH7.tmp	is-M6F0S.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\data\is-L3KTG.tmp	is-M6F0S.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\is-PVFCR.tmp	is-M6F0S.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\is-JI1Q7.tmp	is-M6F0S.tmp
File created	C:\Program Files (x86)\FJCsoftFR\FRec324\is-9RLD7.tmp	is-M6F0S.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
4176	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1504	FRec324.exe
1504	FRec324.exe
1504	FRec324.exe
1504	FRec324.exe
1504	FRec324.exe
1504	FRec324.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4176	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 4192	628	file.exe	86
PID 628 wrote to memory of 4192	628	file.exe	86
PID 628 wrote to memory of 4192	628	file.exe	86
PID 4192 wrote to memory of 1504	4192	is-M6F0S.tmp	87
PID 4192 wrote to memory of 1504	4192	is-M6F0S.tmp	87
PID 4192 wrote to memory of 1504	4192	is-M6F0S.tmp	87
PID 1504 wrote to memory of 4340	1504	FRec324.exe	88
PID 1504 wrote to memory of 4340	1504	FRec324.exe	88
PID 1504 wrote to memory of 4340	1504	FRec324.exe	88
PID 1504 wrote to memory of 5096	1504	FRec324.exe	96
PID 1504 wrote to memory of 5096	1504	FRec324.exe	96
PID 1504 wrote to memory of 5096	1504	FRec324.exe	96
PID 5096 wrote to memory of 4176	5096	cmd.exe	98
PID 5096 wrote to memory of 4176	5096	cmd.exe	98
PID 5096 wrote to memory of 4176	5096	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\is-ECS5R.tmp\is-M6F0S.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-ECS5R.tmp\is-M6F0S.tmp" /SL4 $90068 "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:4192
- - 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:1504
  - - C:\Users\Admin\AppData\Roaming\{7f74da3b-b191-11ed-abe8-806e6f6e6963}\AIFqhc9.exe
      4⤵
      Executes dropped EXE
      PID:4340
  - - 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:5096
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "FRec324.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4176

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

FRec324.exe

Path C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe
Size 2.4MB
SHA256 a9df026c19a72d64b710ffc567d7aafcc3ce9c22c65427f1c4de29e9c8155ddc
MD5 c7650c42e1bdd827c5fa902f32a641da
SHA1 afa4a0ad763a72428c792fe28422d8ab110e6a4c
SHA512 67d50c391eda1192c7bc68286a8dee0c7d534fdd3e337cab972c9a3a1eaeea058f989fae6b8a5c1e5d4cfc16940ee93f0f9dcee6ff0914e7d39a7b20197956d7
SSDEEP 49152:08PjS/wxRm2gFjnffTdFkUKaqMU4JVeXwgN:08PjS/wxRm2eTdFhKX4JVeAW
MD5 SHA1 SHA512 SSDEEP

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FRec324.exe

Path C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe
Size 2.4MB
SHA256 a9df026c19a72d64b710ffc567d7aafcc3ce9c22c65427f1c4de29e9c8155ddc
MD5 c7650c42e1bdd827c5fa902f32a641da
SHA1 afa4a0ad763a72428c792fe28422d8ab110e6a4c
SHA512 67d50c391eda1192c7bc68286a8dee0c7d534fdd3e337cab972c9a3a1eaeea058f989fae6b8a5c1e5d4cfc16940ee93f0f9dcee6ff0914e7d39a7b20197956d7
SSDEEP 49152:08PjS/wxRm2gFjnffTdFkUKaqMU4JVeXwgN:08PjS/wxRm2eTdFhKX4JVeAW
MD5 SHA1 SHA512 SSDEEP

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dll[1].htm

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\4HAJQ22Y\dll[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-6753S.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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is-M6F0S.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-ECS5R.tmp\is-M6F0S.tmp
Size 659KB
SHA256 ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
MD5 63bdf487b26c0886dbced14bab4d4257
SHA1 e3621d870aa54d552861f1c71dea1fb36d71def6
SHA512 b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
SSDEEP 12288:t23Blmb8xrPg373zHIA6XRiywi68ro6kVKhN9q4QpRH/Tp1xG:wBlmb8xrPg373zHIA62KcTVbp1xG
MD5 SHA1 SHA512 SSDEEP

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is-M6F0S.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-ECS5R.tmp\is-M6F0S.tmp
Size 659KB
SHA256 ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
MD5 63bdf487b26c0886dbced14bab4d4257
SHA1 e3621d870aa54d552861f1c71dea1fb36d71def6
SHA512 b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
SSDEEP 12288:t23Blmb8xrPg373zHIA6XRiywi68ro6kVKhN9q4QpRH/Tp1xG:wBlmb8xrPg373zHIA62KcTVbp1xG
MD5 SHA1 SHA512 SSDEEP

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AIFqhc9.exe

Path C:\Users\Admin\AppData\Roaming\{7f74da3b-b191-11ed-abe8-806e6f6e6963}\AIFqhc9.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

AIFqhc9.exe

Path C:\Users\Admin\AppData\Roaming\{7f74da3b-b191-11ed-abe8-806e6f6e6963}\AIFqhc9.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/628-199-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/628-179-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/628-133-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1504-166-0x0000000000400000-0x000000000145B000-memory.dmp

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memory/1504-174-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1504-165-0x0000000000400000-0x000000000145B000-memory.dmp

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memory/1504-181-0x0000000000400000-0x000000000145B000-memory.dmp

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memory/1504-197-0x0000000000400000-0x000000000145B000-memory.dmp

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memory/4192-150-0x0000000000650000-0x0000000000651000-memory.dmp

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memory/4192-198-0x0000000000400000-0x00000000004B4000-memory.dmp

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memory/4192-180-0x0000000000400000-0x00000000004B4000-memory.dmp

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