gcleaner | d08fcaececffc074f1b6f0de3ede44f5ae24353598184ebf81a0db0617df5135

Analysis

max time kernel
71s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2023, 16:31

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General

Target
file.exe
Size 2.9MB
Sample230428-t1c9eahb4z
SHA256 d08fcaececffc074f1b6f0de3ede44f5ae24353598184ebf81a0db0617df5135
MD5 1d69b33e96a72c4516b25383496ca1d5
SHA1 333e23f766f27f9ea28766bd86fcc86ccb994914
SHA512 f25a4a8338aad85edafd6319cd3179c05c2e3af068615b5b4c8a5b12a6a653241aaaf9050929bf321fb60c62b0cc520580097346d9c9664094ea95f21269a846
SSDEEP 49152:EGlJfsGQ43eg0Ex3hM1U8PtokI3psJmG7Mb6HsF+tBNn4dKyacEeYgadEKBWHygU:5d3e1ihM1/arKqbnYmcebadE2WSt
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-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation	Rec428.exe

Executes dropped EXE 3 IoCs

pid	Process
1556	is-LPCB5.tmp
992	Rec428.exe
1348	zJ7D8JFZa.exe

Loads dropped DLL 3 IoCs

pid	Process
1556	is-LPCB5.tmp
1556	is-LPCB5.tmp
1556	is-LPCB5.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 created	C:\Program Files (x86)\FKMsoftFR\Rec428\is-AS2TL.tmp	is-LPCB5.tmp
File created	C:\Program Files (x86)\FKMsoftFR\Rec428\is-758HN.tmp	is-LPCB5.tmp
File created	C:\Program Files (x86)\FKMsoftFR\Rec428\is-COCO1.tmp	is-LPCB5.tmp
File opened for modification	C:\Program Files (x86)\FKMsoftFR\Rec428\unins000.dat	is-LPCB5.tmp
File opened for modification	C:\Program Files (x86)\FKMsoftFR\Rec428\Rec428.exe	is-LPCB5.tmp
File created	C:\Program Files (x86)\FKMsoftFR\Rec428\is-P8UO9.tmp	is-LPCB5.tmp
File created	C:\Program Files (x86)\FKMsoftFR\Rec428\is-840K7.tmp	is-LPCB5.tmp
File created	C:\Program Files (x86)\FKMsoftFR\Rec428\data\is-22JVD.tmp	is-LPCB5.tmp
File created	C:\Program Files (x86)\FKMsoftFR\Rec428\unins000.dat	is-LPCB5.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
2960	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
992	Rec428.exe
992	Rec428.exe
992	Rec428.exe
992	Rec428.exe
992	Rec428.exe
992	Rec428.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2960	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 1556	1716	file.exe	83
PID 1716 wrote to memory of 1556	1716	file.exe	83
PID 1716 wrote to memory of 1556	1716	file.exe	83
PID 1556 wrote to memory of 992	1556	is-LPCB5.tmp	84
PID 1556 wrote to memory of 992	1556	is-LPCB5.tmp	84
PID 1556 wrote to memory of 992	1556	is-LPCB5.tmp	84
PID 992 wrote to memory of 1348	992	Rec428.exe	86
PID 992 wrote to memory of 1348	992	Rec428.exe	86
PID 992 wrote to memory of 1348	992	Rec428.exe	86
PID 992 wrote to memory of 4304	992	Rec428.exe	95
PID 992 wrote to memory of 4304	992	Rec428.exe	95
PID 992 wrote to memory of 4304	992	Rec428.exe	95
PID 4304 wrote to memory of 2960	4304	cmd.exe	97
PID 4304 wrote to memory of 2960	4304	cmd.exe	97
PID 4304 wrote to memory of 2960	4304	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Users\Admin\AppData\Local\Temp\is-TU978.tmp\is-LPCB5.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-TU978.tmp\is-LPCB5.tmp" /SL4 $C006E "C:\Users\Admin\AppData\Local\Temp\file.exe" 2812377 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1556
- - C:\Program Files (x86)\FKMsoftFR\Rec428\Rec428.exe
    "C:\Program Files (x86)\FKMsoftFR\Rec428\Rec428.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:992
  - - C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\zJ7D8JFZa.exe
      4⤵
      Executes dropped EXE
      PID:1348
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "Rec428.exe" /f & erase "C:\Program Files (x86)\FKMsoftFR\Rec428\Rec428.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4304
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "Rec428.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2960

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

Rec428.exe

Path C:\Program Files (x86)\FKMsoftFR\Rec428\Rec428.exe
Size 3.6MB
SHA256 e944fda6b49421ffa36a68938a1b58518b3d56a09b80f2ec5df420633f157ebb
MD5 10fafdae6745b3d35bf3700ca8136d72
SHA1 e7d5a71e5fc4f088fa1e37bb60ccb6455e35c96e
SHA512 b0e450df98e5c73bacc7bdbf56f493765e71fcbb535168df265a17fc1b8f3c09f78ca59a3a00304d6baf641e0800dd261ef2d3488c879f327dc5b268329e2bb5
SSDEEP 24576:b6atGJLbsYtXuNVHE+SdQcuuJcjJ4GVWasHhSaVqBjkgkDw8UHyiSuQmjwccc:btiny1E+jfj5UasHBVjgkM8USaF
MD5 SHA1 SHA512 SSDEEP

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Rec428.exe

Path C:\Program Files (x86)\FKMsoftFR\Rec428\Rec428.exe
Size 3.6MB
SHA256 e944fda6b49421ffa36a68938a1b58518b3d56a09b80f2ec5df420633f157ebb
MD5 10fafdae6745b3d35bf3700ca8136d72
SHA1 e7d5a71e5fc4f088fa1e37bb60ccb6455e35c96e
SHA512 b0e450df98e5c73bacc7bdbf56f493765e71fcbb535168df265a17fc1b8f3c09f78ca59a3a00304d6baf641e0800dd261ef2d3488c879f327dc5b268329e2bb5
SSDEEP 24576:b6atGJLbsYtXuNVHE+SdQcuuJcjJ4GVWasHhSaVqBjkgkDw8UHyiSuQmjwccc:btiny1E+jfj5UasHBVjgkM8USaF
MD5 SHA1 SHA512 SSDEEP

Submit Download

dll[1].htm

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\TUIJN6ZA\dll[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-42U8S.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

_isdecmp.dll

Path C:\Users\Admin\AppData\Local\Temp\is-42U8S.tmp\_isetup\_isdecmp.dll
Size 13KB
SHA256 e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
MD5 a813d18268affd4763dde940246dc7e5
SHA1 c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA512 b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
SSDEEP 384:BXvhMwoSitz/bjx7yxnbdn+EHvbsHoOODCg:BZ7FEAbd+EDsIO
MD5 SHA1 SHA512 SSDEEP

Submit Download

_isdecmp.dll

Path C:\Users\Admin\AppData\Local\Temp\is-42U8S.tmp\_isetup\_isdecmp.dll
Size 13KB
SHA256 e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
MD5 a813d18268affd4763dde940246dc7e5
SHA1 c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA512 b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
SSDEEP 384:BXvhMwoSitz/bjx7yxnbdn+EHvbsHoOODCg:BZ7FEAbd+EDsIO
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-LPCB5.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-TU978.tmp\is-LPCB5.tmp
Size 659KB
SHA256 5b433440454647dc2775cacf3258f2272cb2fc0ec870b862744aad4ee7bc7ec9
MD5 57d101722b08967ce53be6109b7f6ccf
SHA1 f62e5f39efbfb03d0ddd822963122eb1945d9f18
SHA512 57158b946d08d669967f8b09dde8a44a1e2c94ac0a313aa6f3eb52c651c73e7546b085a201847757ac15911d797a8fb2032a13e845b790af5279abd344793f4b
SSDEEP 12288:t23Blmb8xrPg373zHIA6XRiywi68ro6kVKhN9U4QpRH/jpPxG:wBlmb8xrPg373zHIA62KcTVxpPxG
MD5 SHA1 SHA512 SSDEEP

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is-LPCB5.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-TU978.tmp\is-LPCB5.tmp
Size 659KB
SHA256 5b433440454647dc2775cacf3258f2272cb2fc0ec870b862744aad4ee7bc7ec9
MD5 57d101722b08967ce53be6109b7f6ccf
SHA1 f62e5f39efbfb03d0ddd822963122eb1945d9f18
SHA512 57158b946d08d669967f8b09dde8a44a1e2c94ac0a313aa6f3eb52c651c73e7546b085a201847757ac15911d797a8fb2032a13e845b790af5279abd344793f4b
SSDEEP 12288:t23Blmb8xrPg373zHIA6XRiywi68ro6kVKhN9U4QpRH/jpPxG:wBlmb8xrPg373zHIA62KcTVxpPxG
MD5 SHA1 SHA512 SSDEEP

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zJ7D8JFZa.exe

Path C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\zJ7D8JFZa.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

zJ7D8JFZa.exe

Path C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\zJ7D8JFZa.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/992-172-0x0000000000400000-0x0000000001598000-memory.dmp

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memory/992-180-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/992-187-0x0000000000400000-0x0000000001598000-memory.dmp

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memory/992-171-0x0000000000400000-0x0000000001598000-memory.dmp

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memory/992-203-0x0000000000400000-0x0000000001598000-memory.dmp

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memory/1556-186-0x0000000000400000-0x00000000004B4000-memory.dmp

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memory/1556-204-0x0000000000400000-0x00000000004B4000-memory.dmp

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memory/1556-154-0x0000000002230000-0x0000000002231000-memory.dmp

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memory/1716-133-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1716-184-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1716-205-0x0000000000400000-0x0000000000413000-memory.dmp

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